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|
/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/editors/sculpt_paint/paint_vertex.c
* \ingroup edsculpt
*/
#include "MEM_guardedalloc.h"
#include "BLI_blenlib.h"
#include "BLI_math.h"
#include "IMB_imbuf.h"
#include "IMB_imbuf_types.h"
#include "DNA_armature_types.h"
#include "DNA_mesh_types.h"
#include "DNA_particle_types.h"
#include "DNA_scene_types.h"
#include "DNA_brush_types.h"
#include "DNA_object_types.h"
#include "RNA_access.h"
#include "RNA_define.h"
#include "RNA_enum_types.h"
#include "BKE_DerivedMesh.h"
#include "BKE_action.h"
#include "BKE_brush.h"
#include "BKE_context.h"
#include "BKE_depsgraph.h"
#include "BKE_deform.h"
#include "BKE_mesh.h"
#include "BKE_mesh_mapping.h"
#include "BKE_modifier.h"
#include "BKE_object_deform.h"
#include "BKE_paint.h"
#include "BKE_report.h"
#include "BKE_colortools.h"
#include "WM_api.h"
#include "WM_types.h"
#include "GPU_buffers.h"
#include "ED_armature.h"
#include "ED_object.h"
#include "ED_mesh.h"
#include "ED_screen.h"
#include "ED_view3d.h"
#include "paint_intern.h" /* own include */
/* check if we can do partial updates and have them draw realtime
* (without rebuilding the 'derivedFinal') */
static bool vertex_paint_use_fast_update_check(Object *ob)
{
DerivedMesh *dm = ob->derivedFinal;
if (dm) {
Mesh *me = BKE_mesh_from_object(ob);
if (me && me->mcol) {
return (me->mcol == CustomData_get_layer(&dm->faceData, CD_MCOL));
}
}
return false;
}
/* if the polygons from the mesh and the 'derivedFinal' match
* we can assume that no modifiers are applied and that its worth adding tessellated faces
* so 'vertex_paint_use_fast_update_check()' returns true */
static bool vertex_paint_use_tessface_check(Object *ob, Mesh *me)
{
DerivedMesh *dm = ob->derivedFinal;
if (me && dm) {
return (me->mpoly == CustomData_get_layer(&dm->polyData, CD_MPOLY));
}
return false;
}
static void update_tessface_data(Object *ob, Mesh *me)
{
if (vertex_paint_use_tessface_check(ob, me)) {
/* assume if these exist, that they are up to date & valid */
if (!me->mcol || !me->mface) {
/* should always be true */
/* XXX Why this clearing? tessface_calc will reset it anyway! */
#if 0
if (me->mcol) {
memset(me->mcol, 255, 4 * sizeof(MCol) * me->totface);
}
#endif
/* create tessfaces because they will be used for drawing & fast updates */
BKE_mesh_tessface_calc(me); /* does own call to update pointers */
}
}
else {
if (me->totface) {
/* this wont be used, theres no need to keep it */
BKE_mesh_tessface_clear(me);
}
}
}
/* polling - retrieve whether cursor should be set or operator should be done */
/* Returns true if vertex paint mode is active */
int vertex_paint_mode_poll(bContext *C)
{
Object *ob = CTX_data_active_object(C);
return ob && ob->mode == OB_MODE_VERTEX_PAINT && ((Mesh *)ob->data)->totpoly;
}
int vertex_paint_poll(bContext *C)
{
if (vertex_paint_mode_poll(C) &&
BKE_paint_brush(&CTX_data_tool_settings(C)->vpaint->paint))
{
ScrArea *sa = CTX_wm_area(C);
if (sa && sa->spacetype == SPACE_VIEW3D) {
ARegion *ar = CTX_wm_region(C);
if (ar->regiontype == RGN_TYPE_WINDOW)
return 1;
}
}
return 0;
}
int weight_paint_mode_poll(bContext *C)
{
Object *ob = CTX_data_active_object(C);
return ob && ob->mode == OB_MODE_WEIGHT_PAINT && ((Mesh *)ob->data)->totpoly;
}
int weight_paint_poll(bContext *C)
{
Object *ob = CTX_data_active_object(C);
ScrArea *sa;
if ((ob != NULL) &&
(ob->mode & OB_MODE_WEIGHT_PAINT) &&
(BKE_paint_brush(&CTX_data_tool_settings(C)->wpaint->paint) != NULL) &&
(sa = CTX_wm_area(C)) &&
(sa->spacetype == SPACE_VIEW3D))
{
ARegion *ar = CTX_wm_region(C);
if (ar->regiontype == RGN_TYPE_WINDOW) {
return 1;
}
}
return 0;
}
static VPaint *new_vpaint(int wpaint)
{
VPaint *vp = MEM_callocN(sizeof(VPaint), "VPaint");
vp->flag = (wpaint) ? 0 : VP_SPRAY;
vp->paint.flags |= PAINT_SHOW_BRUSH;
return vp;
}
static int *get_indexarray(Mesh *me)
{
return MEM_mallocN(sizeof(int) * (me->totpoly + 1), "vertexpaint");
}
unsigned int vpaint_get_current_col(Scene *scene, VPaint *vp)
{
Brush *brush = BKE_paint_brush(&vp->paint);
unsigned char col[4];
rgb_float_to_uchar(col, BKE_brush_color_get(scene, brush));
col[3] = 255; /* alpha isn't used, could even be removed to speedup paint a little */
return *(unsigned int *)col;
}
static void do_shared_vertex_tesscol(Mesh *me, bool *mfacetag)
{
/* if no mcol: do not do */
/* if tface: only the involved faces, otherwise all */
const int use_face_sel = (me->editflag & ME_EDIT_PAINT_FACE_SEL);
MFace *mface;
int a;
short *scolmain, *scol;
char *mcol;
const bool *mftag;
if (me->mcol == NULL || me->totvert == 0 || me->totface == 0) return;
scolmain = MEM_callocN(4 * sizeof(short) * me->totvert, "colmain");
mface = me->mface;
mcol = (char *)me->mcol;
for (a = me->totface; a > 0; a--, mface++, mcol += 16) {
if ((use_face_sel == false) || (mface->flag & ME_FACE_SEL)) {
scol = scolmain + 4 * mface->v1;
scol[0]++; scol[1] += mcol[1]; scol[2] += mcol[2]; scol[3] += mcol[3];
scol = scolmain + 4 * mface->v2;
scol[0]++; scol[1] += mcol[5]; scol[2] += mcol[6]; scol[3] += mcol[7];
scol = scolmain + 4 * mface->v3;
scol[0]++; scol[1] += mcol[9]; scol[2] += mcol[10]; scol[3] += mcol[11];
if (mface->v4) {
scol = scolmain + 4 * mface->v4;
scol[0]++; scol[1] += mcol[13]; scol[2] += mcol[14]; scol[3] += mcol[15];
}
}
}
a = me->totvert;
scol = scolmain;
while (a--) {
if (scol[0] > 1) {
scol[1] = divide_round_i(scol[1], scol[0]);
scol[2] = divide_round_i(scol[2], scol[0]);
scol[3] = divide_round_i(scol[3], scol[0]);
}
scol += 4;
}
mface = me->mface;
mcol = (char *)me->mcol;
mftag = mfacetag;
for (a = me->totface; a > 0; a--, mface++, mcol += 16, mftag += 4) {
if ((use_face_sel == false) || (mface->flag & ME_FACE_SEL)) {
if (mftag[0]) {
scol = scolmain + 4 * mface->v1;
mcol[1] = scol[1]; mcol[2] = scol[2]; mcol[3] = scol[3];
}
if (mftag[1]) {
scol = scolmain + 4 * mface->v2;
mcol[5] = scol[1]; mcol[6] = scol[2]; mcol[7] = scol[3];
}
if (mftag[2]) {
scol = scolmain + 4 * mface->v3;
mcol[9] = scol[1]; mcol[10] = scol[2]; mcol[11] = scol[3];
}
if (mface->v4 && mftag[3]) {
scol = scolmain + 4 * mface->v4;
mcol[13] = scol[1]; mcol[14] = scol[2]; mcol[15] = scol[3];
}
}
}
MEM_freeN(scolmain);
}
static void do_shared_vertexcol(Mesh *me, bool *mlooptag, bool *mfacetag, const bool do_tessface)
{
const int use_face_sel = (me->editflag & ME_EDIT_PAINT_FACE_SEL);
MPoly *mp;
int (*scol)[4];
int i, j;
bool has_shared = false;
/* if no mloopcol: do not do */
/* if mtexpoly: only the involved faces, otherwise all */
if (me->mloopcol == NULL || me->totvert == 0 || me->totpoly == 0) return;
scol = MEM_callocN(sizeof(int) * me->totvert * 5, "scol");
for (i = 0, mp = me->mpoly; i < me->totpoly; i++, mp++) {
if ((use_face_sel == false) || (mp->flag & ME_FACE_SEL)) {
MLoop *ml = me->mloop + mp->loopstart;
MLoopCol *lcol = me->mloopcol + mp->loopstart;
for (j = 0; j < mp->totloop; j++, ml++, lcol++) {
scol[ml->v][0] += lcol->r;
scol[ml->v][1] += lcol->g;
scol[ml->v][2] += lcol->b;
scol[ml->v][3] += 1;
has_shared = 1;
}
}
}
if (has_shared) {
for (i = 0; i < me->totvert; i++) {
if (scol[i][3] != 0) {
scol[i][0] = divide_round_i(scol[i][0], scol[i][3]);
scol[i][1] = divide_round_i(scol[i][1], scol[i][3]);
scol[i][2] = divide_round_i(scol[i][2], scol[i][3]);
}
}
for (i = 0, mp = me->mpoly; i < me->totpoly; i++, mp++) {
if ((use_face_sel == false) || (mp->flag & ME_FACE_SEL)) {
MLoop *ml = me->mloop + mp->loopstart;
MLoopCol *lcol = me->mloopcol + mp->loopstart;
for (j = 0; j < mp->totloop; j++, ml++, lcol++) {
if (mlooptag[mp->loopstart + j]) {
lcol->r = scol[ml->v][0];
lcol->g = scol[ml->v][1];
lcol->b = scol[ml->v][2];
}
}
}
}
}
MEM_freeN(scol);
if (has_shared && do_tessface) {
do_shared_vertex_tesscol(me, mfacetag);
}
}
static bool make_vertexcol(Object *ob) /* single ob */
{
Mesh *me;
if ((ob->id.lib) ||
((me = BKE_mesh_from_object(ob)) == NULL) ||
(me->totpoly == 0) ||
(me->edit_btmesh))
{
return false;
}
/* copies from shadedisplist to mcol */
if (!me->mloopcol && me->totloop) {
if (!me->mcol) {
CustomData_add_layer(&me->fdata, CD_MCOL, CD_DEFAULT, NULL, me->totface);
}
if (!me->mloopcol) {
CustomData_add_layer(&me->ldata, CD_MLOOPCOL, CD_DEFAULT, NULL, me->totloop);
}
BKE_mesh_update_customdata_pointers(me, true);
}
update_tessface_data(ob, me);
DAG_id_tag_update(&me->id, 0);
return (me->mloopcol != NULL);
}
/* mirror_vgroup is set to -1 when invalid */
static int wpaint_mirror_vgroup_ensure(Object *ob, const int vgroup_active)
{
bDeformGroup *defgroup = BLI_findlink(&ob->defbase, vgroup_active);
if (defgroup) {
int mirrdef;
char name_flip[MAXBONENAME];
BKE_deform_flip_side_name(name_flip, defgroup->name, false);
mirrdef = defgroup_name_index(ob, name_flip);
if (mirrdef == -1) {
if (BKE_defgroup_new(ob, name_flip)) {
mirrdef = BLI_countlist(&ob->defbase) - 1;
}
}
/* curdef should never be NULL unless this is
* a lamp and ED_vgroup_add_name fails */
return mirrdef;
}
return -1;
}
static void free_vpaint_prev(VPaint *vp)
{
if (vp->vpaint_prev) {
MEM_freeN(vp->vpaint_prev);
vp->vpaint_prev = NULL;
vp->tot = 0;
}
}
static void free_wpaint_prev(VPaint *vp)
{
if (vp->wpaint_prev) {
BKE_defvert_array_free(vp->wpaint_prev, vp->tot);
vp->wpaint_prev = NULL;
vp->tot = 0;
}
}
static void copy_vpaint_prev(VPaint *vp, unsigned int *lcol, int tot)
{
free_vpaint_prev(vp);
vp->tot = tot;
if (lcol == NULL || tot == 0) return;
vp->vpaint_prev = MEM_mallocN(sizeof(int) * tot, "vpaint_prev");
memcpy(vp->vpaint_prev, lcol, sizeof(int) * tot);
}
static void copy_wpaint_prev(VPaint *wp, MDeformVert *dverts, int dcount)
{
free_wpaint_prev(wp);
if (dverts && dcount) {
wp->wpaint_prev = MEM_mallocN(sizeof(MDeformVert) * dcount, "wpaint prev");
wp->tot = dcount;
BKE_defvert_array_copy(wp->wpaint_prev, dverts, dcount);
}
}
bool ED_vpaint_fill(Object *ob, unsigned int paintcol)
{
Mesh *me;
MPoly *mp;
int i, j;
bool selected;
if (((me = BKE_mesh_from_object(ob)) == NULL) ||
(me->mloopcol == NULL && (make_vertexcol(ob) == false)))
{
return false;
}
selected = (me->editflag & ME_EDIT_PAINT_FACE_SEL) != 0;
mp = me->mpoly;
for (i = 0; i < me->totpoly; i++, mp++) {
MLoopCol *lcol = me->mloopcol + mp->loopstart;
if (selected && !(mp->flag & ME_FACE_SEL))
continue;
for (j = 0; j < mp->totloop; j++, lcol++) {
*(int *)lcol = paintcol;
}
}
/* remove stale me->mcol, will be added later */
BKE_mesh_tessface_clear(me);
DAG_id_tag_update(&me->id, 0);
return true;
}
/* fills in the selected faces with the current weight and vertex group */
bool ED_wpaint_fill(VPaint *wp, Object *ob, float paintweight)
{
Mesh *me = ob->data;
MPoly *mp;
MDeformWeight *dw, *dw_prev;
int vgroup_active, vgroup_mirror = -1;
unsigned int index;
const bool topology = (me->editflag & ME_EDIT_MIRROR_TOPO) != 0;
/* mutually exclusive, could be made into a */
const short paint_selmode = ME_EDIT_PAINT_SEL_MODE(me);
if (me->totpoly == 0 || me->dvert == NULL || !me->mpoly) {
return false;
}
vgroup_active = ob->actdef - 1;
/* if mirror painting, find the other group */
if (me->editflag & ME_EDIT_MIRROR_X) {
vgroup_mirror = wpaint_mirror_vgroup_ensure(ob, vgroup_active);
}
copy_wpaint_prev(wp, me->dvert, me->totvert);
for (index = 0, mp = me->mpoly; index < me->totpoly; index++, mp++) {
unsigned int fidx = mp->totloop - 1;
if ((paint_selmode == SCE_SELECT_FACE) && !(mp->flag & ME_FACE_SEL)) {
continue;
}
do {
unsigned int vidx = me->mloop[mp->loopstart + fidx].v;
if (!me->dvert[vidx].flag) {
if ((paint_selmode == SCE_SELECT_VERTEX) && !(me->mvert[vidx].flag & SELECT)) {
continue;
}
dw = defvert_verify_index(&me->dvert[vidx], vgroup_active);
if (dw) {
dw_prev = defvert_verify_index(wp->wpaint_prev + vidx, vgroup_active);
dw_prev->weight = dw->weight; /* set the undo weight */
dw->weight = paintweight;
if (me->editflag & ME_EDIT_MIRROR_X) { /* x mirror painting */
int j = mesh_get_x_mirror_vert(ob, vidx, topology);
if (j >= 0) {
/* copy, not paint again */
if (vgroup_mirror != -1) {
dw = defvert_verify_index(me->dvert + j, vgroup_mirror);
dw_prev = defvert_verify_index(wp->wpaint_prev + j, vgroup_mirror);
}
else {
dw = defvert_verify_index(me->dvert + j, vgroup_active);
dw_prev = defvert_verify_index(wp->wpaint_prev + j, vgroup_active);
}
dw_prev->weight = dw->weight; /* set the undo weight */
dw->weight = paintweight;
}
}
}
me->dvert[vidx].flag = 1;
}
} while (fidx--);
}
{
MDeformVert *dv = me->dvert;
for (index = me->totvert; index != 0; index--, dv++) {
dv->flag = 0;
}
}
copy_wpaint_prev(wp, NULL, 0);
DAG_id_tag_update(&me->id, 0);
return true;
}
bool ED_vpaint_smooth(Object *ob)
{
Mesh *me;
MPoly *mp;
int i, j;
bool *mlooptag;
bool selected;
if (((me = BKE_mesh_from_object(ob)) == NULL) ||
(me->mloopcol == NULL && (make_vertexcol(ob) == false)))
{
return false;
}
selected = (me->editflag & ME_EDIT_PAINT_FACE_SEL) != 0;
mlooptag = MEM_callocN(sizeof(bool) * me->totloop, "VPaintData mlooptag");
/* simply tag loops of selected faces */
mp = me->mpoly;
for (i = 0; i < me->totpoly; i++, mp++) {
MLoop *ml = me->mloop + mp->loopstart;
int ml_index = mp->loopstart;
if (selected && !(mp->flag & ME_FACE_SEL))
continue;
for (j = 0; j < mp->totloop; j++, ml_index++, ml++) {
mlooptag[ml_index] = true;
}
}
/* remove stale me->mcol, will be added later */
BKE_mesh_tessface_clear(me);
do_shared_vertexcol(me, mlooptag, NULL, false);
MEM_freeN(mlooptag);
DAG_id_tag_update(&me->id, 0);
return true;
}
/* XXX: should be re-implemented as a vertex/weight paint 'color correct' operator */
#if 0
void vpaint_dogamma(Scene *scene)
{
VPaint *vp = scene->toolsettings->vpaint;
Mesh *me;
Object *ob;
float igam, fac;
int a, temp;
unsigned char *cp, gamtab[256];
ob = OBACT;
me = BKE_mesh_from_object(ob);
if (!(ob->mode & OB_MODE_VERTEX_PAINT)) return;
if (me == 0 || me->mcol == 0 || me->totface == 0) return;
igam = 1.0 / vp->gamma;
for (a = 0; a < 256; a++) {
fac = ((float)a) / 255.0;
fac = vp->mul * pow(fac, igam);
temp = 255.9 * fac;
if (temp <= 0) gamtab[a] = 0;
else if (temp >= 255) gamtab[a] = 255;
else gamtab[a] = temp;
}
a = 4 * me->totface;
cp = (unsigned char *)me->mcol;
while (a--) {
cp[1] = gamtab[cp[1]];
cp[2] = gamtab[cp[2]];
cp[3] = gamtab[cp[3]];
cp += 4;
}
}
#endif
BLI_INLINE unsigned int mcol_blend(unsigned int col1, unsigned int col2, int fac)
{
unsigned char *cp1, *cp2, *cp;
int mfac;
unsigned int col = 0;
if (fac == 0) {
return col1;
}
if (fac >= 255) {
return col2;
}
mfac = 255 - fac;
cp1 = (unsigned char *)&col1;
cp2 = (unsigned char *)&col2;
cp = (unsigned char *)&col;
cp[0] = divide_round_i((mfac * cp1[0] + fac * cp2[0]), 255);
cp[1] = divide_round_i((mfac * cp1[1] + fac * cp2[1]), 255);
cp[2] = divide_round_i((mfac * cp1[2] + fac * cp2[2]), 255);
cp[3] = 255;
return col;
}
BLI_INLINE unsigned int mcol_add(unsigned int col1, unsigned int col2, int fac)
{
unsigned char *cp1, *cp2, *cp;
int temp;
unsigned int col = 0;
if (fac == 0) {
return col1;
}
cp1 = (unsigned char *)&col1;
cp2 = (unsigned char *)&col2;
cp = (unsigned char *)&col;
temp = cp1[0] + divide_round_i((fac * cp2[0]), 255);
cp[0] = (temp > 254) ? 255 : temp;
temp = cp1[1] + divide_round_i((fac * cp2[1]), 255);
cp[1] = (temp > 254) ? 255 : temp;
temp = cp1[2] + divide_round_i((fac * cp2[2]), 255);
cp[2] = (temp > 254) ? 255 : temp;
cp[3] = 255;
return col;
}
BLI_INLINE unsigned int mcol_sub(unsigned int col1, unsigned int col2, int fac)
{
unsigned char *cp1, *cp2, *cp;
int temp;
unsigned int col = 0;
if (fac == 0) {
return col1;
}
cp1 = (unsigned char *)&col1;
cp2 = (unsigned char *)&col2;
cp = (unsigned char *)&col;
temp = cp1[0] - divide_round_i((fac * cp2[0]), 255);
cp[0] = (temp < 0) ? 0 : temp;
temp = cp1[1] - divide_round_i((fac * cp2[1]), 255);
cp[1] = (temp < 0) ? 0 : temp;
temp = cp1[2] - divide_round_i((fac * cp2[2]), 255);
cp[2] = (temp < 0) ? 0 : temp;
cp[3] = 255;
return col;
}
BLI_INLINE unsigned int mcol_mul(unsigned int col1, unsigned int col2, int fac)
{
unsigned char *cp1, *cp2, *cp;
int mfac;
unsigned int col = 0;
if (fac == 0) {
return col1;
}
mfac = 255 - fac;
cp1 = (unsigned char *)&col1;
cp2 = (unsigned char *)&col2;
cp = (unsigned char *)&col;
/* first mul, then blend the fac */
cp[0] = divide_round_i(mfac * cp1[0] * 255 + fac * cp2[0] * cp1[0], 255 * 255);
cp[1] = divide_round_i(mfac * cp1[1] * 255 + fac * cp2[1] * cp1[1], 255 * 255);
cp[2] = divide_round_i(mfac * cp1[2] * 255 + fac * cp2[2] * cp1[2], 255 * 255);
cp[3] = 255;
return col;
}
BLI_INLINE unsigned int mcol_lighten(unsigned int col1, unsigned int col2, int fac)
{
unsigned char *cp1, *cp2, *cp;
int mfac;
unsigned int col = 0;
if (fac == 0) {
return col1;
}
else if (fac >= 255) {
return col2;
}
mfac = 255 - fac;
cp1 = (unsigned char *)&col1;
cp2 = (unsigned char *)&col2;
cp = (unsigned char *)&col;
/* See if are lighter, if so mix, else don't do anything.
* if the paint col is darker then the original, then ignore */
if (rgb_to_grayscale_byte(cp1) > rgb_to_grayscale_byte(cp2)) {
return col1;
}
cp[0] = divide_round_i(mfac * cp1[0] + fac * cp2[0], 255);
cp[1] = divide_round_i(mfac * cp1[1] + fac * cp2[1], 255);
cp[2] = divide_round_i(mfac * cp1[2] + fac * cp2[2], 255);
cp[3] = 255;
return col;
}
BLI_INLINE unsigned int mcol_darken(unsigned int col1, unsigned int col2, int fac)
{
unsigned char *cp1, *cp2, *cp;
int mfac;
unsigned int col = 0;
if (fac == 0) {
return col1;
}
else if (fac >= 255) {
return col2;
}
mfac = 255 - fac;
cp1 = (unsigned char *)&col1;
cp2 = (unsigned char *)&col2;
cp = (unsigned char *)&col;
/* See if were darker, if so mix, else don't do anything.
* if the paint col is brighter then the original, then ignore */
if (rgb_to_grayscale_byte(cp1) < rgb_to_grayscale_byte(cp2)) {
return col1;
}
cp[0] = divide_round_i((mfac * cp1[0] + fac * cp2[0]), 255);
cp[1] = divide_round_i((mfac * cp1[1] + fac * cp2[1]), 255);
cp[2] = divide_round_i((mfac * cp1[2] + fac * cp2[2]), 255);
cp[3] = 255;
return col;
}
/* wpaint has 'wpaint_blend_tool' */
static unsigned int vpaint_blend_tool(const int tool, const unsigned int col,
const unsigned int paintcol, const int alpha_i)
{
switch (tool) {
case PAINT_BLEND_MIX:
case PAINT_BLEND_BLUR: return mcol_blend(col, paintcol, alpha_i);
case PAINT_BLEND_ADD: return mcol_add(col, paintcol, alpha_i);
case PAINT_BLEND_SUB: return mcol_sub(col, paintcol, alpha_i);
case PAINT_BLEND_MUL: return mcol_mul(col, paintcol, alpha_i);
case PAINT_BLEND_LIGHTEN: return mcol_lighten(col, paintcol, alpha_i);
case PAINT_BLEND_DARKEN: return mcol_darken(col, paintcol, alpha_i);
default:
BLI_assert(0);
return 0;
}
}
/* wpaint has 'wpaint_blend' */
static unsigned int vpaint_blend(VPaint *vp, unsigned int col, unsigned int colorig, const
unsigned int paintcol, const int alpha_i,
/* pre scaled from [0-1] --> [0-255] */
const int brush_alpha_value_i)
{
Brush *brush = BKE_paint_brush(&vp->paint);
const int tool = brush->vertexpaint_tool;
col = vpaint_blend_tool(tool, col, paintcol, alpha_i);
/* if no spray, clip color adding with colorig & orig alpha */
if ((vp->flag & VP_SPRAY) == 0) {
unsigned int testcol, a;
char *cp, *ct, *co;
testcol = vpaint_blend_tool(tool, colorig, paintcol, brush_alpha_value_i);
cp = (char *)&col;
ct = (char *)&testcol;
co = (char *)&colorig;
for (a = 0; a < 4; a++) {
if (ct[a] < co[a]) {
if (cp[a] < ct[a]) cp[a] = ct[a];
else if (cp[a] > co[a]) cp[a] = co[a];
}
else {
if (cp[a] < co[a]) cp[a] = co[a];
else if (cp[a] > ct[a]) cp[a] = ct[a];
}
}
}
return col;
}
static int sample_backbuf_area(ViewContext *vc, int *indexar, int totface, int x, int y, float size)
{
struct ImBuf *ibuf;
int a, tot = 0, index;
/* brecht: disabled this because it obviously fails for
* brushes with size > 64, why is this here? */
/*if (size > 64.0) size = 64.0;*/
ibuf = view3d_read_backbuf(vc, x - size, y - size, x + size, y + size);
if (ibuf) {
unsigned int *rt = ibuf->rect;
memset(indexar, 0, sizeof(int) * (totface + 1));
size = ibuf->x * ibuf->y;
while (size--) {
if (*rt) {
index = WM_framebuffer_to_index(*rt);
if (index > 0 && index <= totface)
indexar[index] = 1;
}
rt++;
}
for (a = 1; a <= totface; a++) {
if (indexar[a]) indexar[tot++] = a;
}
IMB_freeImBuf(ibuf);
}
return tot;
}
/* whats _dl mean? */
static float calc_vp_strength_col_dl(VPaint *vp, ViewContext *vc, const float co[3],
const float mval[2], const float brush_size_pressure, float rgba[4])
{
float co_ss[2]; /* screenspace */
if (ED_view3d_project_float_object(vc->ar,
co, co_ss,
V3D_PROJ_TEST_CLIP_BB | V3D_PROJ_TEST_CLIP_NEAR) == V3D_PROJ_RET_OK)
{
const float dist_sq = len_squared_v2v2(mval, co_ss);
if (dist_sq <= brush_size_pressure * brush_size_pressure) {
Brush *brush = BKE_paint_brush(&vp->paint);
const float dist = sqrtf(dist_sq);
float factor;
if (brush->mtex.tex && rgba) {
if (brush->mtex.brush_map_mode == MTEX_MAP_MODE_3D) {
BKE_brush_sample_tex_3D(vc->scene, brush, co, rgba, 0, NULL);
}
else {
const float co_ss_3d[3] = {co_ss[0], co_ss[1], 0.0f}; /* we need a 3rd empty value */
BKE_brush_sample_tex_3D(vc->scene, brush, co_ss_3d, rgba, 0, NULL);
}
factor = rgba[3];
}
else {
factor = 1.0f;
}
return factor * BKE_brush_curve_strength_clamp(brush, dist, brush_size_pressure);
}
}
if (rgba)
zero_v4(rgba);
return 0.0f;
}
static float calc_vp_alpha_col_dl(VPaint *vp, ViewContext *vc,
float vpimat[3][3], const DMCoNo *v_co_no,
const float mval[2],
const float brush_size_pressure, const float brush_alpha_pressure, float rgba[4])
{
float strength = calc_vp_strength_col_dl(vp, vc, v_co_no->co, mval, brush_size_pressure, rgba);
if (strength > 0.0f) {
float alpha = brush_alpha_pressure * strength;
if (vp->flag & VP_NORMALS) {
float dvec[3];
/* transpose ! */
dvec[2] = dot_v3v3(vpimat[2], v_co_no->no);
if (dvec[2] > 0.0f) {
dvec[0] = dot_v3v3(vpimat[0], v_co_no->no);
dvec[1] = dot_v3v3(vpimat[1], v_co_no->no);
alpha *= dvec[2] / len_v3(dvec);
}
else {
return 0.0f;
}
}
return alpha;
}
return 0.0f;
}
BLI_INLINE float wval_blend(const float weight, const float paintval, const float alpha)
{
const float talpha = min_ff(alpha, 1.0f); /* blending with values over 1 doesn't make sense */
return (paintval * talpha) + (weight * (1.0f - talpha));
}
BLI_INLINE float wval_add(const float weight, const float paintval, const float alpha)
{
return weight + (paintval * alpha);
}
BLI_INLINE float wval_sub(const float weight, const float paintval, const float alpha)
{
return weight - (paintval * alpha);
}
BLI_INLINE float wval_mul(const float weight, const float paintval, const float alpha)
{ /* first mul, then blend the fac */
return ((1.0f - alpha) + (alpha * paintval)) * weight;
}
BLI_INLINE float wval_lighten(const float weight, const float paintval, const float alpha)
{
return (weight < paintval) ? wval_blend(weight, paintval, alpha) : weight;
}
BLI_INLINE float wval_darken(const float weight, const float paintval, const float alpha)
{
return (weight > paintval) ? wval_blend(weight, paintval, alpha) : weight;
}
/* vpaint has 'vpaint_blend_tool' */
/* result is not clamped from [0-1] */
static float wpaint_blend_tool(const int tool,
/* dw->weight */
const float weight,
const float paintval, const float alpha)
{
switch (tool) {
case PAINT_BLEND_MIX:
case PAINT_BLEND_BLUR: return wval_blend(weight, paintval, alpha);
case PAINT_BLEND_ADD: return wval_add(weight, paintval, alpha);
case PAINT_BLEND_SUB: return wval_sub(weight, paintval, alpha);
case PAINT_BLEND_MUL: return wval_mul(weight, paintval, alpha);
case PAINT_BLEND_LIGHTEN: return wval_lighten(weight, paintval, alpha);
case PAINT_BLEND_DARKEN: return wval_darken(weight, paintval, alpha);
default:
BLI_assert(0);
return 0.0f;
}
}
/* vpaint has 'vpaint_blend' */
static float wpaint_blend(VPaint *wp, float weight, float weight_prev,
const float alpha, float paintval,
const float brush_alpha_value,
const short do_flip, const short do_multipaint_totsel)
{
Brush *brush = BKE_paint_brush(&wp->paint);
int tool = brush->vertexpaint_tool;
if (do_flip) {
switch (tool) {
case PAINT_BLEND_MIX:
paintval = 1.f - paintval; break;
case PAINT_BLEND_ADD:
tool = PAINT_BLEND_SUB; break;
case PAINT_BLEND_SUB:
tool = PAINT_BLEND_ADD; break;
case PAINT_BLEND_LIGHTEN:
tool = PAINT_BLEND_DARKEN; break;
case PAINT_BLEND_DARKEN:
tool = PAINT_BLEND_LIGHTEN; break;
}
}
weight = wpaint_blend_tool(tool, weight, paintval, alpha);
/* delay clamping until the end so multi-paint can function when the active group is at the limits */
if (do_multipaint_totsel == false) {
CLAMP(weight, 0.0f, 1.0f);
}
/* if no spray, clip result with orig weight & orig alpha */
if ((wp->flag & VP_SPRAY) == 0) {
if (do_multipaint_totsel == false) {
float testw = wpaint_blend_tool(tool, weight_prev, paintval, brush_alpha_value);
CLAMP(testw, 0.0f, 1.0f);
if (testw < weight_prev) {
if (weight < testw) weight = testw;
else if (weight > weight_prev) weight = weight_prev;
}
else {
if (weight > testw) weight = testw;
else if (weight < weight_prev) weight = weight_prev;
}
}
}
return weight;
}
/* ----------------------------------------------------- */
/* sets wp->weight to the closest weight value to vertex */
/* note: we cant sample frontbuf, weight colors are interpolated too unpredictable */
static int weight_sample_invoke(bContext *C, wmOperator *op, const wmEvent *event)
{
ViewContext vc;
Mesh *me;
bool changed = false;
view3d_set_viewcontext(C, &vc);
me = BKE_mesh_from_object(vc.obact);
if (me && me->dvert && vc.v3d && vc.rv3d) {
const int use_vert_sel = (me->editflag & ME_EDIT_PAINT_VERT_SEL) != 0;
int v_idx_best = -1;
unsigned int index;
view3d_operator_needs_opengl(C);
ED_view3d_init_mats_rv3d(vc.obact, vc.rv3d);
if (use_vert_sel) {
if (ED_mesh_pick_vert(C, vc.obact, event->mval, &index, ED_MESH_PICK_DEFAULT_VERT_SIZE, true)) {
v_idx_best = index;
}
}
else {
if (ED_mesh_pick_face_vert(C, vc.obact, event->mval, &index, ED_MESH_PICK_DEFAULT_FACE_SIZE)) {
v_idx_best = index;
}
else if (ED_mesh_pick_face(C, vc.obact, event->mval, &index, ED_MESH_PICK_DEFAULT_FACE_SIZE)) {
/* this relies on knowning the internal worksings of ED_mesh_pick_face_vert() */
BKE_report(op->reports, RPT_WARNING, "The modifier used does not support deformed locations");
}
}
if (v_idx_best != -1) { /* should always be valid */
ToolSettings *ts = vc.scene->toolsettings;
Brush *brush = BKE_paint_brush(&ts->wpaint->paint);
const int vgroup_active = vc.obact->actdef - 1;
float vgroup_weight = defvert_find_weight(&me->dvert[v_idx_best], vgroup_active);
BKE_brush_weight_set(vc.scene, brush, vgroup_weight);
changed = true;
}
}
if (changed) {
/* not really correct since the brush didnt change, but redraws the toolbar */
WM_main_add_notifier(NC_BRUSH | NA_EDITED, NULL); /* ts->wpaint->paint.brush */
return OPERATOR_FINISHED;
}
else {
return OPERATOR_CANCELLED;
}
}
void PAINT_OT_weight_sample(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Weight Paint Sample Weight";
ot->idname = "PAINT_OT_weight_sample";
ot->description = "Use the mouse to sample a weight in the 3D view";
/* api callbacks */
ot->invoke = weight_sample_invoke;
ot->poll = weight_paint_mode_poll;
/* flags */
ot->flag = OPTYPE_UNDO;
}
/* samples cursor location, and gives menu with vertex groups to activate */
static bool weight_paint_sample_enum_itemf__helper(const MDeformVert *dvert, const int defbase_tot, int *groups)
{
/* this func fills in used vgroup's */
bool found = false;
int i = dvert->totweight;
MDeformWeight *dw;
for (dw = dvert->dw; i > 0; dw++, i--) {
if (dw->def_nr < defbase_tot) {
groups[dw->def_nr] = true;
found = true;
}
}
return found;
}
static EnumPropertyItem *weight_paint_sample_enum_itemf(bContext *C, PointerRNA *UNUSED(ptr), PropertyRNA *UNUSED(prop), bool *r_free)
{
if (C) {
wmWindow *win = CTX_wm_window(C);
if (win && win->eventstate) {
ViewContext vc;
Mesh *me;
view3d_set_viewcontext(C, &vc);
me = BKE_mesh_from_object(vc.obact);
if (me && me->dvert && vc.v3d && vc.rv3d && vc.obact->defbase.first) {
const int defbase_tot = BLI_countlist(&vc.obact->defbase);
const int use_vert_sel = (me->editflag & ME_EDIT_PAINT_VERT_SEL) != 0;
int *groups = MEM_callocN(defbase_tot * sizeof(int), "groups");
bool found = false;
unsigned int index;
const int mval[2] = {
win->eventstate->x - vc.ar->winrct.xmin,
win->eventstate->y - vc.ar->winrct.ymin,
};
view3d_operator_needs_opengl(C);
ED_view3d_init_mats_rv3d(vc.obact, vc.rv3d);
if (use_vert_sel) {
if (ED_mesh_pick_vert(C, vc.obact, mval, &index, ED_MESH_PICK_DEFAULT_VERT_SIZE, true)) {
MDeformVert *dvert = &me->dvert[index];
found |= weight_paint_sample_enum_itemf__helper(dvert, defbase_tot, groups);
}
}
else {
if (ED_mesh_pick_face(C, vc.obact, mval, &index, ED_MESH_PICK_DEFAULT_FACE_SIZE)) {
MPoly *mp = &me->mpoly[index];
unsigned int fidx = mp->totloop - 1;
do {
MDeformVert *dvert = &me->dvert[me->mloop[mp->loopstart + fidx].v];
found |= weight_paint_sample_enum_itemf__helper(dvert, defbase_tot, groups);
} while (fidx--);
}
}
if (found == false) {
MEM_freeN(groups);
}
else {
EnumPropertyItem *item = NULL, item_tmp = {0};
int totitem = 0;
int i = 0;
bDeformGroup *dg;
for (dg = vc.obact->defbase.first; dg && i < defbase_tot; i++, dg = dg->next) {
if (groups[i]) {
item_tmp.identifier = item_tmp.name = dg->name;
item_tmp.value = i;
RNA_enum_item_add(&item, &totitem, &item_tmp);
}
}
RNA_enum_item_end(&item, &totitem);
*r_free = true;
MEM_freeN(groups);
return item;
}
}
}
}
return DummyRNA_NULL_items;
}
static int weight_sample_group_exec(bContext *C, wmOperator *op)
{
int type = RNA_enum_get(op->ptr, "group");
ViewContext vc;
view3d_set_viewcontext(C, &vc);
BLI_assert(type + 1 >= 0);
vc.obact->actdef = type + 1;
DAG_id_tag_update(&vc.obact->id, OB_RECALC_DATA);
WM_event_add_notifier(C, NC_OBJECT | ND_DRAW, vc.obact);
return OPERATOR_FINISHED;
}
/* TODO, we could make this a menu into OBJECT_OT_vertex_group_set_active rather than its own operator */
void PAINT_OT_weight_sample_group(wmOperatorType *ot)
{
PropertyRNA *prop = NULL;
/* identifiers */
ot->name = "Weight Paint Sample Group";
ot->idname = "PAINT_OT_weight_sample_group";
ot->description = "Select one of the vertex groups available under current mouse position";
/* api callbacks */
ot->exec = weight_sample_group_exec;
ot->invoke = WM_menu_invoke;
ot->poll = weight_paint_mode_poll;
/* flags */
ot->flag = OPTYPE_UNDO;
/* keyingset to use (dynamic enum) */
prop = RNA_def_enum(ot->srna, "group", DummyRNA_DEFAULT_items, 0, "Keying Set", "The Keying Set to use");
RNA_def_enum_funcs(prop, weight_paint_sample_enum_itemf);
RNA_def_property_flag(prop, PROP_ENUM_NO_TRANSLATE);
ot->prop = prop;
}
static void do_weight_paint_normalize_all(MDeformVert *dvert, const int defbase_tot, const bool *vgroup_validmap)
{
float sum = 0.0f, fac;
unsigned int i, tot = 0;
MDeformWeight *dw;
for (i = dvert->totweight, dw = dvert->dw; i != 0; i--, dw++) {
if (dw->def_nr < defbase_tot && vgroup_validmap[dw->def_nr]) {
tot++;
sum += dw->weight;
}
}
if ((tot == 0) || (sum == 1.0f)) {
return;
}
if (sum != 0.0f) {
fac = 1.0f / sum;
for (i = dvert->totweight, dw = dvert->dw; i != 0; i--, dw++) {
if (dw->def_nr < defbase_tot && vgroup_validmap[dw->def_nr]) {
dw->weight *= fac;
}
}
}
else {
/* hrmf, not a factor in this case */
fac = 1.0f / tot;
for (i = dvert->totweight, dw = dvert->dw; i != 0; i--, dw++) {
if (dw->def_nr < defbase_tot && vgroup_validmap[dw->def_nr]) {
dw->weight = fac;
}
}
}
}
/* same as function above except it normalizes against the active vgroup which remains unchanged
*
* note that the active is just the group which is unchanged, it can be any,
* can also be -1 to normalize all but in that case call 'do_weight_paint_normalize_all' */
static void do_weight_paint_normalize_all_active(MDeformVert *dvert, const int defbase_tot, const bool *vgroup_validmap,
const int vgroup_active)
{
float sum = 0.0f, fac;
unsigned int i, tot = 0;
MDeformWeight *dw;
float act_weight = 0.0f;
for (i = dvert->totweight, dw = dvert->dw; i != 0; i--, dw++) {
if (dw->def_nr < defbase_tot && vgroup_validmap[dw->def_nr]) {
if (dw->def_nr != vgroup_active) {
sum += dw->weight;
tot++;
}
else {
act_weight = dw->weight;
}
}
}
if ((tot == 0) || (sum + act_weight == 1.0f)) {
return;
}
if (sum != 0.0f) {
fac = (1.0f / sum) * (1.0f - act_weight);
for (i = dvert->totweight, dw = dvert->dw; i != 0; i--, dw++) {
if (dw->def_nr < defbase_tot && vgroup_validmap[dw->def_nr]) {
if (dw->def_nr != vgroup_active) {
dw->weight *= fac;
/* paranoid but possibly with float error */
CLAMP(dw->weight, 0.0f, 1.0f);
}
}
}
}
else {
/* corner case where we need to scale all weights evenly because they're all zero */
/* hrmf, not a factor in this case */
fac = (1.0f - act_weight) / tot;
/* paranoid but possibly with float error */
CLAMP(fac, 0.0f, 1.0f);
for (i = dvert->totweight, dw = dvert->dw; i != 0; i--, dw++) {
if (dw->def_nr < defbase_tot && vgroup_validmap[dw->def_nr]) {
if (dw->def_nr != vgroup_active) {
dw->weight = fac;
}
}
}
}
}
/*
* See if the current deform vertex has a locked group
*/
static bool has_locked_group(MDeformVert *dvert, const int defbase_tot,
const bool *bone_groups, const bool *lock_flags)
{
int i;
MDeformWeight *dw;
for (i = dvert->totweight, dw = dvert->dw; i != 0; i--, dw++) {
if (dw->def_nr < defbase_tot) {
if (bone_groups[dw->def_nr] && lock_flags[dw->def_nr] && dw->weight > 0.0f) {
return true;
}
}
}
return false;
}
static bool has_locked_group_selected(int defbase_tot, const bool *defbase_sel, const bool *lock_flags)
{
int i;
for (i = 0; i < defbase_tot; i++) {
if (defbase_sel[i] && lock_flags[i]) {
return true;
}
}
return false;
}
#if 0 /* UNUSED */
static bool has_unselected_unlocked_bone_group(int defbase_tot, bool *defbase_sel, int selected,
const bool *lock_flags, const bool *vgroup_validmap)
{
int i;
if (defbase_tot == selected) {
return false;
}
for (i = 0; i < defbase_tot; i++) {
if (vgroup_validmap[i] && !defbase_sel[i] && !lock_flags[i]) {
return true;
}
}
return false;
}
#endif
static void multipaint_selection(MDeformVert *dvert, const int defbase_tot, float change, const bool *defbase_sel)
{
int i;
MDeformWeight *dw;
float val;
/* make sure they are all at most 1 after the change */
for (i = 0; i < defbase_tot; i++) {
if (defbase_sel[i]) {
dw = defvert_find_index(dvert, i);
if (dw && dw->weight) {
val = dw->weight * change;
if (val > 1) {
/* TODO: when the change is reduced, you need to recheck
* the earlier values to make sure they are not 0
* (precision error) */
change = 1.0f / dw->weight;
}
/* the value should never reach zero while multi-painting if it
* was nonzero beforehand */
if (val <= 0) {
return;
}
}
}
}
/* apply the valid change */
for (i = 0; i < defbase_tot; i++) {
if (defbase_sel[i]) {
dw = defvert_find_index(dvert, i);
if (dw && dw->weight) {
dw->weight = dw->weight * change;
}
}
}
}
/* move all change onto valid, unchanged groups. If there is change left over,
* then return it.
* assumes there are valid groups to shift weight onto */
static float redistribute_change(MDeformVert *ndv, const int defbase_tot,
char *change_status, const char change_me, int changeto,
float totchange, float total_valid,
bool do_auto_normalize)
{
bool changed;
float change;
float oldval;
MDeformWeight *ndw;
int i;
do {
/* assume there is no change until you see one */
changed = false;
/* change each group by the same amount each time */
change = totchange / total_valid;
for (i = 0; i < ndv->totweight && total_valid && totchange; i++) {
ndw = (ndv->dw + i);
/* ignore anything outside the value range */
if (ndw->def_nr < defbase_tot) {
/* change only the groups with a valid status */
if (change_status[ndw->def_nr] == change_me) {
oldval = ndw->weight;
/* if auto normalize is active, don't worry about upper bounds */
if (do_auto_normalize == false && ndw->weight + change > 1) {
totchange -= 1.0f - ndw->weight;
ndw->weight = 1.0f;
/* stop the changes to this group */
change_status[ndw->def_nr] = changeto;
total_valid--;
}
else if (ndw->weight + change < 0) { /* check the lower bound */
totchange -= ndw->weight;
ndw->weight = 0;
change_status[ndw->def_nr] = changeto;
total_valid--;
}
else { /* a perfectly valid change occurred to ndw->weight */
totchange -= change;
ndw->weight += change;
}
/* see if there was a change */
if (oldval != ndw->weight) {
changed = true;
}
}
}
}
/* don't go again if there was no change, if there is no valid group,
* or there is no change left */
} while (changed && total_valid && totchange);
/* left overs */
return totchange;
}
static float get_mp_change(MDeformVert *odv, const int defbase_tot, const bool *defbase_sel, float brush_change);
/* observe the changes made to the weights of groups.
* make sure all locked groups on the vertex have the same deformation
* by moving the changes made to groups onto other unlocked groups */
static void enforce_locks(MDeformVert *odv, MDeformVert *ndv,
const int defbase_tot, const bool *defbase_sel,
const bool *lock_flags, const bool *vgroup_validmap,
bool do_auto_normalize, bool do_multipaint)
{
float totchange = 0.0f;
float totchange_allowed = 0.0f;
float left_over;
int total_valid = 0;
int total_changed = 0;
unsigned int i;
MDeformWeight *ndw;
MDeformWeight *odw;
// float changed_sum = 0.0f; // UNUSED
char *change_status;
if (!lock_flags || !has_locked_group(ndv, defbase_tot, vgroup_validmap, lock_flags)) {
return;
}
/* record if a group was changed, unlocked and not changed, or locked */
change_status = MEM_callocN(sizeof(char) * defbase_tot, "unlocked_unchanged");
for (i = 0; i < defbase_tot; i++) {
ndw = defvert_find_index(ndv, i);
odw = defvert_find_index(odv, i);
/* the weights are zero, so we can assume a lot */
if (!ndw || !odw) {
if (!lock_flags[i] && vgroup_validmap[i]) {
defvert_verify_index(odv, i);
defvert_verify_index(ndv, i);
total_valid++;
change_status[i] = 1; /* can be altered while redistributing */
}
continue;
}
/* locked groups should not be changed */
if (lock_flags[i]) {
ndw->weight = odw->weight;
}
else if (ndw->weight != odw->weight) { /* changed groups are handled here */
totchange += ndw->weight - odw->weight;
// changed_sum += ndw->weight; // UNUSED
change_status[i] = 2; /* was altered already */
total_changed++;
} /* unchanged, unlocked bone groups are handled here */
else if (vgroup_validmap[i]) {
totchange_allowed += ndw->weight;
total_valid++;
change_status[i] = 1; /* can be altered while redistributing */
}
}
/* if there was any change, redistribute it */
if (total_changed) {
/* auto normalize will allow weights to temporarily go above 1 in redistribution */
if (vgroup_validmap && total_changed < 0 && total_valid) {
totchange_allowed = total_valid;
}
/* the way you modify the unlocked + unchanged groups is different depending
* on whether or not you are painting the weight(s) up or down */
if (totchange < 0) {
totchange_allowed = total_valid - totchange_allowed;
}
else {
totchange_allowed *= -1;
}
/* there needs to be change allowed, or you should not bother */
if (totchange_allowed) {
left_over = 0;
if (fabsf(totchange_allowed) < fabsf(totchange)) {
/* this amount goes back onto the changed, unlocked weights */
left_over = fabsf(fabsf(totchange) - fabsf(totchange_allowed));
if (totchange > 0) {
left_over *= -1;
}
}
else {
/* all of the change will be permitted */
totchange_allowed = -totchange;
}
/* move the weight evenly between the allowed groups, move excess back onto the used groups based on the change */
totchange_allowed = redistribute_change(ndv, defbase_tot, change_status, 1, -1, totchange_allowed, total_valid, do_auto_normalize);
left_over += totchange_allowed;
if (left_over) {
/* more than one nonzero weights were changed with the same ratio with multipaint, so keep them changed that way! */
if (total_changed > 1 && do_multipaint) {
float undo_change = get_mp_change(ndv, defbase_tot, defbase_sel, left_over);
multipaint_selection(ndv, defbase_tot, undo_change, defbase_sel);
}
/* or designatedw is still -1 put weight back as evenly as possible */
else {
redistribute_change(ndv, defbase_tot, change_status, 2, -2, left_over, total_changed, do_auto_normalize);
}
}
}
else {
/* reset the weights */
MDeformWeight *dw_old = odv->dw;
MDeformWeight *dw_new = ndv->dw;
for (i = odv->totweight; i != 0; i--, dw_old++, dw_new++) {
dw_new->weight = dw_old->weight;
}
}
}
MEM_freeN(change_status);
}
/* multi-paint's initial, potential change is computed here based on the user's stroke */
static float get_mp_change(MDeformVert *odv, const int defbase_tot, const bool *defbase_sel, float brush_change)
{
float selwsum = 0.0f;
unsigned int i;
MDeformWeight *dw = odv->dw;
for (i = odv->totweight; i != 0; i--, dw++) {
if (dw->def_nr < defbase_tot) {
if (defbase_sel[dw->def_nr]) {
selwsum += dw->weight;
}
}
}
if (selwsum && selwsum + brush_change > 0) {
return (selwsum + brush_change) / selwsum;
}
return 0.0f;
}
/* change the weights back to the wv's weights
* it assumes you already have the correct pointer index */
static void defvert_reset_to_prev(MDeformVert *dv_prev, MDeformVert *dv)
{
MDeformWeight *dw = dv->dw;
MDeformWeight *dw_prev;
unsigned int i;
for (i = dv->totweight; i != 0; i--, dw++) {
dw_prev = defvert_find_index(dv_prev, dw->def_nr);
/* if there was no w when there is a d, then the old weight was 0 */
dw->weight = dw_prev ? dw_prev->weight : 0.0f;
}
}
static void clamp_weights(MDeformVert *dvert)
{
MDeformWeight *dw = dvert->dw;
unsigned int i;
for (i = dvert->totweight; i != 0; i--, dw++) {
CLAMP(dw->weight, 0.0f, 1.0f);
}
}
/* struct to avoid passing many args each call to do_weight_paint_vertex()
* this _could_ be made a part of the operators 'WPaintData' struct, or at
* least a member, but for now keep its own struct, initialized on every
* paint stroke update - campbell */
typedef struct WeightPaintInfo {
int defbase_tot;
/* both must add up to 'defbase_tot' */
int defbase_tot_sel;
int defbase_tot_unsel;
int vgroup_active; /* (ob->actdef - 1) */
int vgroup_mirror; /* mirror group or -1 */
const bool *lock_flags; /* boolean array for locked bones,
* length of defbase_tot */
const bool *defbase_sel; /* boolean array for selected bones,
* length of defbase_tot, cant be const because of how its passed */
const bool *vgroup_validmap; /* same as WeightPaintData.vgroup_validmap,
* only added here for convenience */
bool do_flip;
bool do_multipaint;
bool do_auto_normalize;
float brush_alpha_value; /* result of BKE_brush_alpha_get() */
} WeightPaintInfo;
/* fresh start to make multi-paint and locking modular */
/* returns true if it thinks you need to reset the weights due to
* normalizing while multi-painting
*
* note: this assumes dw->def_nr range has been checked by the caller
*/
static int apply_mp_locks_normalize(Mesh *me, const WeightPaintInfo *wpi,
const unsigned int index,
MDeformWeight *dw, MDeformWeight *tdw,
float change, float oldChange,
float oldw, float neww)
{
MDeformVert *dv = &me->dvert[index];
MDeformVert dv_test = {NULL};
dv_test.dw = MEM_dupallocN(dv->dw);
dv_test.flag = dv->flag;
dv_test.totweight = dv->totweight;
/* do not multi-paint if a locked group is selected or the active group is locked
* !lock_flags[dw->def_nr] helps if nothing is selected, but active group is locked */
if ((wpi->lock_flags == NULL) ||
((wpi->lock_flags[dw->def_nr] == false) && /* def_nr range has to be checked for by caller */
has_locked_group_selected(wpi->defbase_tot, wpi->defbase_sel, wpi->lock_flags) == false))
{
if (wpi->do_multipaint && wpi->defbase_tot_sel > 1) {
if (change && change != 1) {
multipaint_selection(dv, wpi->defbase_tot, change, wpi->defbase_sel);
}
}
else { /* this lets users paint normally, but don't let them paint locked groups */
dw->weight = neww;
}
}
clamp_weights(dv);
enforce_locks(&dv_test, dv, wpi->defbase_tot, wpi->defbase_sel, wpi->lock_flags, wpi->vgroup_validmap, wpi->do_auto_normalize, wpi->do_multipaint);
if (wpi->do_auto_normalize) {
/* XXX - should we pass the active group? - currently '-1' */
do_weight_paint_normalize_all(dv, wpi->defbase_tot, wpi->vgroup_validmap);
}
if (oldChange && wpi->do_multipaint && wpi->defbase_tot_sel > 1) {
if (tdw->weight != oldw) {
if (neww > oldw) {
if (tdw->weight <= oldw) {
MEM_freeN(dv_test.dw);
return true;
}
}
else {
if (tdw->weight >= oldw) {
MEM_freeN(dv_test.dw);
return true;
}
}
}
}
MEM_freeN(dv_test.dw);
return false;
}
/* within the current dvert index, get the dw that is selected and has a weight
* above 0, this helps multi-paint */
static int get_first_selected_nonzero_weight(MDeformVert *dvert, const int defbase_tot, const bool *defbase_sel)
{
int i;
MDeformWeight *dw = dvert->dw;
for (i = 0; i < dvert->totweight; i++, dw++) {
if (dw->def_nr < defbase_tot) {
if (defbase_sel[dw->def_nr] && dw->weight > 0.0f) {
return i;
}
}
}
return -1;
}
static void do_weight_paint_vertex(
/* vars which remain the same for every vert */
VPaint *wp, Object *ob, const WeightPaintInfo *wpi,
/* vars which change on each stroke */
const unsigned int index, float alpha, float paintweight
)
{
Mesh *me = ob->data;
MDeformVert *dv = &me->dvert[index];
bool topology = (me->editflag & ME_EDIT_MIRROR_TOPO) != 0;
MDeformWeight *dw, *dw_prev;
/* mirror vars */
int index_mirr;
int vgroup_mirr;
MDeformVert *dv_mirr;
MDeformWeight *dw_mirr;
const short do_multipaint_totsel = (wpi->do_multipaint && wpi->defbase_tot_sel > 1);
if (wp->flag & VP_ONLYVGROUP) {
dw = defvert_find_index(dv, wpi->vgroup_active);
dw_prev = defvert_find_index(wp->wpaint_prev + index, wpi->vgroup_active);
}
else {
dw = defvert_verify_index(dv, wpi->vgroup_active);
dw_prev = defvert_verify_index(wp->wpaint_prev + index, wpi->vgroup_active);
}
if (dw == NULL || dw_prev == NULL) {
return;
}
/* from now on we can check if mirrors enabled if this var is -1 and not bother with the flag */
if (me->editflag & ME_EDIT_MIRROR_X) {
index_mirr = mesh_get_x_mirror_vert(ob, index, topology);
vgroup_mirr = (wpi->vgroup_mirror != -1) ? wpi->vgroup_mirror : wpi->vgroup_active;
/* another possible error - mirror group _and_ active group are the same (which is fine),
* but we also are painting onto a center vertex - this would paint the same weight twice */
if (index_mirr == index && vgroup_mirr == wpi->vgroup_active) {
index_mirr = vgroup_mirr = -1;
}
}
else {
index_mirr = vgroup_mirr = -1;
}
/* get the mirror def vars */
if (index_mirr != -1) {
dv_mirr = &me->dvert[index_mirr];
if (wp->flag & VP_ONLYVGROUP) {
dw_mirr = defvert_find_index(dv_mirr, vgroup_mirr);
if (dw_mirr == NULL) {
index_mirr = vgroup_mirr = -1;
dv_mirr = NULL;
}
}
else {
if (index != index_mirr) {
dw_mirr = defvert_verify_index(dv_mirr, vgroup_mirr);
}
else {
/* dv and dv_mirr are the same */
int totweight_prev = dv_mirr->totweight;
int dw_offset = (int)(dw - dv_mirr->dw);
dw_mirr = defvert_verify_index(dv_mirr, vgroup_mirr);
/* if we added another, get our old one back */
if (totweight_prev != dv_mirr->totweight) {
dw = &dv_mirr->dw[dw_offset];
}
}
}
}
else {
dv_mirr = NULL;
dw_mirr = NULL;
}
/* TODO: De-duplicate the simple weight paint - jason */
/* ... or not, since its <10 SLOC - campbell */
/* If there are no locks or multipaint,
* then there is no need to run the more complicated checks */
if ((do_multipaint_totsel == false) &&
(wpi->lock_flags == NULL || has_locked_group(dv, wpi->defbase_tot, wpi->vgroup_validmap, wpi->lock_flags) == false))
{
dw->weight = wpaint_blend(wp, dw->weight, dw_prev->weight, alpha, paintweight,
wpi->brush_alpha_value, wpi->do_flip, false);
/* WATCH IT: take care of the ordering of applying mirror -> normalize,
* can give wrong results [#26193], least confusing if normalize is done last */
/* apply mirror */
if (index_mirr != -1) {
/* copy, not paint again */
dw_mirr->weight = dw->weight;
}
/* apply normalize */
if (wpi->do_auto_normalize) {
/* note on normalize - this used to be applied after painting and normalize all weights,
* in some ways this is good because there is feedback where the more weights involved would
* 'resist' so you couldn't instantly zero out other weights by painting 1.0 on the active.
*
* However this gave a problem since applying mirror, then normalize both verts
* the resulting weight wont match on both sides.
*
* If this 'resisting', slower normalize is nicer, we could call
* do_weight_paint_normalize_all() and only use...
* do_weight_paint_normalize_all_active() when normalizing the mirror vertex.
* - campbell
*/
do_weight_paint_normalize_all_active(dv, wpi->defbase_tot, wpi->vgroup_validmap, wpi->vgroup_active);
if (index_mirr != -1) {
/* only normalize if this is not a center vertex, else we get a conflict, normalizing twice */
if (index != index_mirr) {
do_weight_paint_normalize_all_active(dv_mirr, wpi->defbase_tot, wpi->vgroup_validmap, vgroup_mirr);
}
else {
/* this case accounts for...
* - painting onto a center vertex of a mesh
* - x mirror is enabled
* - auto normalize is enabled
* - the group you are painting onto has a L / R version
*
* We want L/R vgroups to have the same weight but this cant be if both are over 0.5,
* We _could_ have special check for that, but this would need its own normalize function which
* holds 2 groups from changing at once.
*
* So! just balance out the 2 weights, it keeps them equal and everything normalized.
*
* While it wont hit the desired weight immediately as the user waggles their mouse,
* constant painting and re-normalizing will get there. this is also just simpler logic.
* - campbell */
dw_mirr->weight = dw->weight = (dw_mirr->weight + dw->weight) * 0.5f;
}
}
}
}
else {
/* use locks and/or multipaint */
float oldw;
float neww;
/* float testw = 0; */ /* UNUSED */
float observedChange = 0;
float change = 0;
float oldChange = 0;
int i;
MDeformWeight *tdw = NULL, *tdw_prev;
MDeformVert dv_copy = {NULL};
oldw = dw->weight;
neww = wpaint_blend(wp, dw->weight, dw_prev->weight, alpha, paintweight,
wpi->brush_alpha_value, wpi->do_flip, do_multipaint_totsel);
/* setup multi-paint */
observedChange = neww - oldw;
if (do_multipaint_totsel && observedChange) {
dv_copy.dw = MEM_dupallocN(dv->dw);
dv_copy.flag = dv->flag;
dv_copy.totweight = dv->totweight;
tdw = dw;
tdw_prev = dw_prev;
change = get_mp_change(&wp->wpaint_prev[index], wpi->defbase_tot, wpi->defbase_sel, observedChange);
if (change) {
if (!tdw->weight) {
i = get_first_selected_nonzero_weight(dv, wpi->defbase_tot, wpi->defbase_sel);
if (i >= 0) {
tdw = &(dv->dw[i]);
tdw_prev = defvert_verify_index(&wp->wpaint_prev[index], tdw->def_nr);
}
else {
change = 0;
}
}
if (change && tdw_prev->weight && tdw_prev->weight * change) {
if (tdw->weight != tdw_prev->weight) {
oldChange = tdw->weight / tdw_prev->weight;
/* testw = tdw_prev->weight * change; */ /* UNUSED */
if (observedChange > 0) {
if (change > oldChange) {
/* reset the weights and use the new change */
defvert_reset_to_prev(wp->wpaint_prev + index, dv);
}
else {
/* the old change was more significant, so set
* the change to 0 so that it will not do another multi-paint */
change = 0;
}
}
else {
if (change < oldChange) {
defvert_reset_to_prev(wp->wpaint_prev + index, dv);
}
else {
change = 0;
}
}
}
}
else {
change = 0;
}
}
}
if (apply_mp_locks_normalize(me, wpi, index, dw, tdw, change, oldChange, oldw, neww)) {
defvert_reset_to_prev(&dv_copy, dv);
change = 0;
oldChange = 0;
}
if (dv_copy.dw) {
MEM_freeN(dv_copy.dw);
}
#if 0
/* dv may have been altered greatly */
dw = defvert_find_index(dv, vgroup);
#else
dw = NULL; /* UNUSED after assignment, set to NULL to ensure we don't
* use again, we thats needed un-ifdef the line above */
(void)dw; /* quiet warnigns */
#endif
/* x mirror painting */
if (index_mirr != -1) {
/* copy, not paint again */
/* dw_mirr->weight = dw->weight; */ /* TODO, explain the logic in not assigning weight! - campbell */
apply_mp_locks_normalize(me, wpi, index_mirr, dw_mirr, tdw, change, oldChange, oldw, neww);
}
}
}
/* *************** set wpaint operator ****************** */
/**
* \note Keep in sync with #vpaint_mode_toggle_exec
*/
static int wpaint_mode_toggle_exec(bContext *C, wmOperator *op)
{
Object *ob = CTX_data_active_object(C);
const int mode_flag = OB_MODE_WEIGHT_PAINT;
const bool is_mode_set = (ob->mode & mode_flag) != 0;
Scene *scene = CTX_data_scene(C);
VPaint *wp = scene->toolsettings->wpaint;
Mesh *me;
if (!is_mode_set) {
if (!ED_object_mode_compat_set(C, ob, mode_flag, op->reports)) {
return OPERATOR_CANCELLED;
}
}
me = BKE_mesh_from_object(ob);
if (ob->mode & mode_flag) {
ob->mode &= ~mode_flag;
if (me->editflag & ME_EDIT_PAINT_VERT_SEL) {
BKE_mesh_flush_select_from_verts(me);
}
else if (me->editflag & ME_EDIT_PAINT_FACE_SEL) {
BKE_mesh_flush_select_from_polys(me);
}
/* weight paint specific */
ED_mesh_mirror_spatial_table(NULL, NULL, NULL, 'e');
ED_mesh_mirror_topo_table(NULL, 'e');
paint_cursor_delete_textures();
}
else {
ob->mode |= mode_flag;
if (wp == NULL)
wp = scene->toolsettings->wpaint = new_vpaint(1);
paint_cursor_start(C, weight_paint_poll);
BKE_paint_init(&wp->paint, PAINT_CURSOR_WEIGHT_PAINT);
/* weight paint specific */
ED_mesh_mirror_spatial_table(ob, NULL, NULL, 's');
ED_vgroup_sync_from_pose(ob);
}
/* Weightpaint works by overriding colors in mesh,
* so need to make sure we recalc on enter and
* exit (exit needs doing regardless because we
* should redeform).
*/
DAG_id_tag_update(&me->id, 0);
WM_event_add_notifier(C, NC_SCENE | ND_MODE, scene);
return OPERATOR_FINISHED;
}
/* for switching to/from mode */
static int paint_poll_test(bContext *C)
{
Object *ob = CTX_data_active_object(C);
if (ob == NULL || ob->type != OB_MESH)
return 0;
if (!ob->data || ((ID *)ob->data)->lib)
return 0;
if (CTX_data_edit_object(C))
return 0;
return 1;
}
void PAINT_OT_weight_paint_toggle(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Weight Paint Mode";
ot->idname = "PAINT_OT_weight_paint_toggle";
ot->description = "Toggle weight paint mode in 3D view";
/* api callbacks */
ot->exec = wpaint_mode_toggle_exec;
ot->poll = paint_poll_test;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
/* ************ weight paint operator ********** */
struct WPaintData {
ViewContext vc;
int *indexar;
int vgroup_active;
int vgroup_mirror;
void *vp_handle;
DMCoNo *vertexcosnos;
float wpimat[3][3];
/* variables for auto normalize */
const bool *vgroup_validmap; /* stores if vgroups tie to deforming bones or not */
const bool *lock_flags;
int defbase_tot;
};
/* ensure we have data on wpaint start, add if needed */
static bool wpaint_ensure_data(bContext *C, wmOperator *op)
{
Scene *scene = CTX_data_scene(C);
Object *ob = CTX_data_active_object(C);
Mesh *me = BKE_mesh_from_object(ob);
if (scene->obedit) {
return false;
}
if (me == NULL || me->totpoly == 0) {
return false;
}
/* if nothing was added yet, we make dverts and a vertex deform group */
if (!me->dvert) {
ED_vgroup_data_create(&me->id);
WM_event_add_notifier(C, NC_GEOM | ND_DATA, me);
}
/* this happens on a Bone select, when no vgroup existed yet */
if (ob->actdef <= 0) {
Object *modob;
if ((modob = modifiers_isDeformedByArmature(ob))) {
Bone *actbone = ((bArmature *)modob->data)->act_bone;
if (actbone) {
bPoseChannel *pchan = BKE_pose_channel_find_name(modob->pose, actbone->name);
if (pchan) {
bDeformGroup *dg = defgroup_find_name(ob, pchan->name);
if (dg == NULL) {
dg = ED_vgroup_add_name(ob, pchan->name); /* sets actdef */
}
else {
int actdef = 1 + BLI_findindex(&ob->defbase, dg);
BLI_assert(actdef >= 0);
ob->actdef = actdef;
}
}
}
}
}
if (BLI_listbase_is_empty(&ob->defbase)) {
ED_vgroup_add(ob);
}
/* ensure we don't try paint onto an invalid group */
if (ob->actdef <= 0) {
BKE_report(op->reports, RPT_WARNING, "No active vertex group for painting, aborting");
return false;
}
return true;
}
static bool wpaint_stroke_test_start(bContext *C, wmOperator *op, const float UNUSED(mouse[2]))
{
Scene *scene = CTX_data_scene(C);
struct PaintStroke *stroke = op->customdata;
ToolSettings *ts = scene->toolsettings;
VPaint *wp = ts->wpaint;
Object *ob = CTX_data_active_object(C);
Mesh *me = BKE_mesh_from_object(ob);
struct WPaintData *wpd;
float mat[4][4], imat[4][4];
if (wpaint_ensure_data(C, op) == false) {
return false;
}
{
/* check if we are attempting to paint onto a locked vertex group,
* and other options disallow it from doing anything useful */
bDeformGroup *dg = BLI_findlink(&ob->defbase, (ob->actdef - 1));
if (dg->flag & DG_LOCK_WEIGHT) {
BKE_report(op->reports, RPT_WARNING, "Active group is locked, aborting");
return false;
}
}
/* ALLOCATIONS! no return after this line */
/* make mode data storage */
wpd = MEM_callocN(sizeof(struct WPaintData), "WPaintData");
paint_stroke_set_mode_data(stroke, wpd);
view3d_set_viewcontext(C, &wpd->vc);
wpd->vgroup_active = ob->actdef - 1;
wpd->vgroup_mirror = -1;
/* set up auto-normalize, and generate map for detecting which
* vgroups affect deform bones */
wpd->defbase_tot = BLI_countlist(&ob->defbase);
wpd->lock_flags = BKE_objdef_lock_flags_get(ob, wpd->defbase_tot);
if (ts->auto_normalize || ts->multipaint || wpd->lock_flags) {
wpd->vgroup_validmap = BKE_objdef_validmap_get(ob, wpd->defbase_tot);
}
/* painting on subsurfs should give correct points too, this returns me->totvert amount */
wpd->vp_handle = ED_vpaint_proj_handle_create(scene, ob, &wpd->vertexcosnos);
wpd->indexar = get_indexarray(me);
copy_wpaint_prev(wp, me->dvert, me->totvert);
/* imat for normals */
mul_m4_m4m4(mat, wpd->vc.rv3d->viewmat, ob->obmat);
invert_m4_m4(imat, mat);
copy_m3_m4(wpd->wpimat, imat);
/* if mirror painting, find the other group */
if (me->editflag & ME_EDIT_MIRROR_X) {
wpd->vgroup_mirror = wpaint_mirror_vgroup_ensure(ob, wpd->vgroup_active);
}
return true;
}
static void wpaint_stroke_update_step(bContext *C, struct PaintStroke *stroke, PointerRNA *itemptr)
{
Scene *scene = CTX_data_scene(C);
ToolSettings *ts = CTX_data_tool_settings(C);
VPaint *wp = ts->wpaint;
Brush *brush = BKE_paint_brush(&wp->paint);
struct WPaintData *wpd = paint_stroke_mode_data(stroke);
ViewContext *vc;
Object *ob;
Mesh *me;
float mat[4][4];
float paintweight;
int *indexar;
float totw;
unsigned int index, totindex;
float alpha;
float mval[2];
bool use_vert_sel;
bool use_face_sel;
bool use_depth;
MDeformWeight *(*dw_func)(MDeformVert *, const int) =
(brush->vertexpaint_tool == PAINT_BLEND_BLUR) ?
((wp->flag & VP_ONLYVGROUP) ?
(MDeformWeight *(*)(MDeformVert *, const int))defvert_find_index :
defvert_verify_index) : NULL;
const float pressure = RNA_float_get(itemptr, "pressure");
const float brush_size_pressure = BKE_brush_size_get(scene, brush) * (BKE_brush_use_size_pressure(scene, brush) ? pressure : 1.0f);
const float brush_alpha_value = BKE_brush_alpha_get(scene, brush);
const float brush_alpha_pressure = brush_alpha_value * (BKE_brush_use_alpha_pressure(scene, brush) ? pressure : 1.0f);
/* intentionally don't initialize as NULL, make sure we initialize all members below */
WeightPaintInfo wpi;
/* cannot paint if there is no stroke data */
if (wpd == NULL) {
/* XXX: force a redraw here, since even though we can't paint,
* at least view won't freeze until stroke ends */
ED_region_tag_redraw(CTX_wm_region(C));
return;
}
vc = &wpd->vc;
ob = vc->obact;
me = ob->data;
indexar = wpd->indexar;
view3d_operator_needs_opengl(C);
ED_view3d_init_mats_rv3d(ob, vc->rv3d);
/* load projection matrix */
mul_m4_m4m4(mat, vc->rv3d->persmat, ob->obmat);
RNA_float_get_array(itemptr, "mouse", mval);
/* *** setup WeightPaintInfo - pass onto do_weight_paint_vertex *** */
wpi.defbase_tot = wpd->defbase_tot;
wpi.defbase_sel = BKE_objdef_selected_get(ob, wpi.defbase_tot, &wpi.defbase_tot_sel);
if (wpi.defbase_tot_sel == 0 && ob->actdef > 0) {
wpi.defbase_tot_sel = 1;
}
wpi.defbase_tot_unsel = wpi.defbase_tot - wpi.defbase_tot_sel;
wpi.vgroup_active = wpd->vgroup_active;
wpi.vgroup_mirror = wpd->vgroup_mirror;
wpi.lock_flags = wpd->lock_flags;
wpi.vgroup_validmap = wpd->vgroup_validmap;
wpi.do_flip = RNA_boolean_get(itemptr, "pen_flip");
wpi.do_multipaint = (ts->multipaint != 0);
wpi.do_auto_normalize = ((ts->auto_normalize != 0) && (wpi.vgroup_validmap != NULL));
wpi.brush_alpha_value = brush_alpha_value;
/* *** done setting up WeightPaintInfo *** */
swap_m4m4(wpd->vc.rv3d->persmat, mat);
use_vert_sel = (me->editflag & ME_EDIT_PAINT_VERT_SEL) != 0;
use_face_sel = (me->editflag & ME_EDIT_PAINT_FACE_SEL) != 0;
use_depth = (vc->v3d->flag & V3D_ZBUF_SELECT) != 0;
/* which faces are involved */
if (use_depth) {
char editflag_prev = me->editflag;
/* Ugly hack, to avoid drawing vertex index when getting the face index buffer - campbell */
me->editflag &= ~ME_EDIT_PAINT_VERT_SEL;
if (use_vert_sel) {
/* Ugly x2, we need this so hidden faces don't draw */
me->editflag |= ME_EDIT_PAINT_FACE_SEL;
}
totindex = sample_backbuf_area(vc, indexar, me->totpoly, mval[0], mval[1], brush_size_pressure);
me->editflag = editflag_prev;
if (use_face_sel && me->totpoly) {
MPoly *mpoly = me->mpoly;
for (index = 0; index < totindex; index++) {
if (indexar[index] && indexar[index] <= me->totpoly) {
MPoly *mp = &mpoly[indexar[index] - 1];
if ((mp->flag & ME_FACE_SEL) == 0) {
indexar[index] = 0;
}
}
}
}
}
else {
indexar = NULL;
}
/* incase we have modifiers */
ED_vpaint_proj_handle_update(wpd->vp_handle, vc->ar, mval);
/* make sure each vertex gets treated only once */
/* and calculate filter weight */
totw = 0.0f;
if (brush->vertexpaint_tool == PAINT_BLEND_BLUR)
paintweight = 0.0f;
else
paintweight = BKE_brush_weight_get(scene, brush);
#define WP_BLUR_ACCUM(v_idx_var) \
{ \
const unsigned int vidx = v_idx_var; \
const float fac = calc_vp_strength_col_dl(wp, vc, wpd->vertexcosnos[vidx].co, mval, brush_size_pressure, NULL); \
if (fac > 0.0f) { \
MDeformWeight *dw = dw_func(&me->dvert[vidx], wpi.vgroup_active); \
paintweight += dw ? (dw->weight * fac) : 0.0f; \
totw += fac; \
} \
} (void)0
if (use_depth) {
for (index = 0; index < totindex; index++) {
if (indexar[index] && indexar[index] <= me->totpoly) {
MPoly *mpoly = me->mpoly + (indexar[index] - 1);
MLoop *ml = me->mloop + mpoly->loopstart;
int i;
if (use_vert_sel) {
for (i = 0; i < mpoly->totloop; i++, ml++) {
me->dvert[ml->v].flag = (me->mvert[ml->v].flag & SELECT);
}
}
else {
for (i = 0; i < mpoly->totloop; i++, ml++) {
me->dvert[ml->v].flag = 1;
}
}
if (brush->vertexpaint_tool == PAINT_BLEND_BLUR) {
ml = me->mloop + mpoly->loopstart;
for (i = 0; i < mpoly->totloop; i++, ml++) {
WP_BLUR_ACCUM(ml->v);
}
}
}
}
}
else {
const unsigned int totvert = me->totvert;
unsigned int i;
/* in the case of face selection we need to flush */
if (use_vert_sel || use_face_sel) {
for (i = 0; i < totvert; i++) {
me->dvert[i].flag = me->mvert[i].flag & SELECT;
}
}
else {
for (i = 0; i < totvert; i++) {
me->dvert[i].flag = SELECT;
}
}
if (brush->vertexpaint_tool == PAINT_BLEND_BLUR) {
for (i = 0; i < totvert; i++) {
WP_BLUR_ACCUM(i);
}
}
}
#undef WP_BLUR_ACCUM
if (brush->vertexpaint_tool == PAINT_BLEND_BLUR) {
paintweight /= totw;
}
#define WP_PAINT(v_idx_var) \
{ \
unsigned int vidx = v_idx_var; \
if (me->dvert[vidx].flag) { \
alpha = calc_vp_alpha_col_dl(wp, vc, wpd->wpimat, &wpd->vertexcosnos[vidx], \
mval, brush_size_pressure, brush_alpha_pressure, NULL); \
if (alpha) { \
do_weight_paint_vertex(wp, ob, &wpi, vidx, alpha, paintweight); \
} \
me->dvert[vidx].flag = 0; \
} \
} (void)0
if (use_depth) {
for (index = 0; index < totindex; index++) {
if (indexar[index] && indexar[index] <= me->totpoly) {
MPoly *mpoly = me->mpoly + (indexar[index] - 1);
MLoop *ml = me->mloop + mpoly->loopstart;
int i;
for (i = 0; i < mpoly->totloop; i++, ml++) {
WP_PAINT(ml->v);
}
}
}
}
else {
const unsigned int totvert = me->totvert;
unsigned int i;
for (i = 0; i < totvert; i++) {
WP_PAINT(i);
}
}
#undef WP_PAINT
/* *** free wpi members */
MEM_freeN((void *)wpi.defbase_sel);
/* *** done freeing wpi members */
swap_m4m4(vc->rv3d->persmat, mat);
DAG_id_tag_update(ob->data, 0);
ED_region_tag_redraw(vc->ar);
}
static void wpaint_stroke_done(const bContext *C, struct PaintStroke *stroke)
{
ToolSettings *ts = CTX_data_tool_settings(C);
Object *ob = CTX_data_active_object(C);
struct WPaintData *wpd = paint_stroke_mode_data(stroke);
if (wpd) {
ED_vpaint_proj_handle_free(wpd->vp_handle);
MEM_freeN(wpd->indexar);
if (wpd->vgroup_validmap)
MEM_freeN((void *)wpd->vgroup_validmap);
if (wpd->lock_flags)
MEM_freeN((void *)wpd->lock_flags);
MEM_freeN(wpd);
}
/* frees prev buffer */
copy_wpaint_prev(ts->wpaint, NULL, 0);
/* and particles too */
if (ob->particlesystem.first) {
ParticleSystem *psys;
int i;
for (psys = ob->particlesystem.first; psys; psys = psys->next) {
for (i = 0; i < PSYS_TOT_VG; i++) {
if (psys->vgroup[i] == ob->actdef) {
psys->recalc |= PSYS_RECALC_RESET;
break;
}
}
}
}
DAG_id_tag_update(ob->data, 0);
WM_event_add_notifier(C, NC_OBJECT | ND_DRAW, ob);
}
static int wpaint_invoke(bContext *C, wmOperator *op, const wmEvent *event)
{
int retval;
op->customdata = paint_stroke_new(C, op, NULL, wpaint_stroke_test_start,
wpaint_stroke_update_step, NULL,
wpaint_stroke_done, event->type);
if ((retval = op->type->modal(C, op, event)) == OPERATOR_FINISHED) {
paint_stroke_data_free(op);
return OPERATOR_FINISHED;
}
/* add modal handler */
WM_event_add_modal_handler(C, op);
OPERATOR_RETVAL_CHECK(retval);
BLI_assert(retval == OPERATOR_RUNNING_MODAL);
return OPERATOR_RUNNING_MODAL;
}
static int wpaint_exec(bContext *C, wmOperator *op)
{
op->customdata = paint_stroke_new(C, op, NULL, wpaint_stroke_test_start,
wpaint_stroke_update_step, NULL,
wpaint_stroke_done, 0);
/* frees op->customdata */
paint_stroke_exec(C, op);
return OPERATOR_FINISHED;
}
static void wpaint_cancel(bContext *C, wmOperator *op)
{
paint_stroke_cancel(C, op);
}
void PAINT_OT_weight_paint(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Weight Paint";
ot->idname = "PAINT_OT_weight_paint";
ot->description = "Paint a stroke in the current vertex group's weights";
/* api callbacks */
ot->invoke = wpaint_invoke;
ot->modal = paint_stroke_modal;
ot->exec = wpaint_exec;
ot->poll = weight_paint_poll;
ot->cancel = wpaint_cancel;
/* flags */
ot->flag = OPTYPE_UNDO | OPTYPE_BLOCKING;
RNA_def_collection_runtime(ot->srna, "stroke", &RNA_OperatorStrokeElement, "Stroke", "");
}
static int weight_paint_set_exec(bContext *C, wmOperator *op)
{
struct Scene *scene = CTX_data_scene(C);
Object *obact = CTX_data_active_object(C);
ToolSettings *ts = CTX_data_tool_settings(C);
Brush *brush = BKE_paint_brush(&ts->wpaint->paint);
float vgroup_weight = BKE_brush_weight_get(scene, brush);
if (wpaint_ensure_data(C, op) == false) {
return OPERATOR_CANCELLED;
}
if (ED_wpaint_fill(scene->toolsettings->wpaint, obact, vgroup_weight)) {
ED_region_tag_redraw(CTX_wm_region(C)); /* XXX - should redraw all 3D views */
return OPERATOR_FINISHED;
}
else {
return OPERATOR_CANCELLED;
}
}
void PAINT_OT_weight_set(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Set Weight";
ot->idname = "PAINT_OT_weight_set";
ot->description = "Fill the active vertex group with the current paint weight";
/* api callbacks */
ot->exec = weight_paint_set_exec;
ot->poll = mask_paint_poll;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
/* ************ set / clear vertex paint mode ********** */
/**
* \note Keep in sync with #wpaint_mode_toggle_exec
*/
static int vpaint_mode_toggle_exec(bContext *C, wmOperator *op)
{
Object *ob = CTX_data_active_object(C);
const int mode_flag = OB_MODE_VERTEX_PAINT;
const bool is_mode_set = (ob->mode & mode_flag) != 0;
Scene *scene = CTX_data_scene(C);
VPaint *vp = scene->toolsettings->vpaint;
Mesh *me;
if (!is_mode_set) {
if (!ED_object_mode_compat_set(C, ob, mode_flag, op->reports)) {
return OPERATOR_CANCELLED;
}
}
me = BKE_mesh_from_object(ob);
/* toggle: end vpaint */
if (is_mode_set) {
ob->mode &= ~mode_flag;
if (me->editflag & ME_EDIT_PAINT_FACE_SEL) {
BKE_mesh_flush_select_from_polys(me);
}
paint_cursor_delete_textures();
}
else {
ob->mode |= mode_flag;
if (me->mloopcol == NULL) {
make_vertexcol(ob);
}
if (vp == NULL)
vp = scene->toolsettings->vpaint = new_vpaint(0);
paint_cursor_start(C, vertex_paint_poll);
BKE_paint_init(&vp->paint, PAINT_CURSOR_VERTEX_PAINT);
}
/* update modifier stack for mapping requirements */
DAG_id_tag_update(&me->id, 0);
WM_event_add_notifier(C, NC_SCENE | ND_MODE, scene);
return OPERATOR_FINISHED;
}
void PAINT_OT_vertex_paint_toggle(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Vertex Paint Mode";
ot->idname = "PAINT_OT_vertex_paint_toggle";
ot->description = "Toggle the vertex paint mode in 3D view";
/* api callbacks */
ot->exec = vpaint_mode_toggle_exec;
ot->poll = paint_poll_test;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
/* ********************** vertex paint operator ******************* */
/* Implementation notes:
*
* Operator->invoke()
* - validate context (add mcol)
* - create customdata storage
* - call paint once (mouse click)
* - add modal handler
*
* Operator->modal()
* - for every mousemove, apply vertex paint
* - exit on mouse release, free customdata
* (return OPERATOR_FINISHED also removes handler and operator)
*
* For future:
* - implement a stroke event (or mousemove with past positons)
* - revise whether op->customdata should be added in object, in set_vpaint
*/
typedef struct PolyFaceMap {
struct PolyFaceMap *next, *prev;
int facenr;
} PolyFaceMap;
typedef struct VPaintData {
ViewContext vc;
unsigned int paintcol;
int *indexar;
struct VertProjHandle *vp_handle;
DMCoNo *vertexcosnos;
float vpimat[3][3];
/* modify 'me->mcol' directly, since the derived mesh is drawing from this
* array, otherwise we need to refresh the modifier stack */
bool use_fast_update;
/* mpoly -> mface mapping */
MeshElemMap *polyfacemap;
void *polyfacemap_mem;
/* loops tagged as having been painted, to apply shared vertex color
* blending only to modified loops */
bool *mlooptag;
bool *mfacetag;
bool is_texbrush;
} VPaintData;
static void vpaint_build_poly_facemap(struct VPaintData *vd, Mesh *me)
{
const int *tessface_origindex;
vd->polyfacemap = NULL;
vd->polyfacemap_mem = NULL;
tessface_origindex = CustomData_get_layer(&me->fdata, CD_ORIGINDEX);
if (!tessface_origindex)
return;
BKE_mesh_origindex_map_create(&vd->polyfacemap, (int **)&vd->polyfacemap_mem,
me->totpoly,
tessface_origindex, me->totface);
}
static bool vpaint_stroke_test_start(bContext *C, struct wmOperator *op, const float UNUSED(mouse[2]))
{
Scene *scene = CTX_data_scene(C);
ToolSettings *ts = scene->toolsettings;
struct PaintStroke *stroke = op->customdata;
VPaint *vp = ts->vpaint;
Brush *brush = BKE_paint_brush(&vp->paint);
struct VPaintData *vpd;
Object *ob = CTX_data_active_object(C);
Mesh *me;
float mat[4][4], imat[4][4];
/* context checks could be a poll() */
me = BKE_mesh_from_object(ob);
if (me == NULL || me->totpoly == 0)
return false;
if (me->mloopcol == NULL)
make_vertexcol(ob);
if (me->mloopcol == NULL)
return false;
/* Update tessface data if needed
* Added here too because e.g. switching to/from edit mode would remove tessface data,
* yet "fast_update" could still be used! */
update_tessface_data(ob, me);
/* make mode data storage */
vpd = MEM_callocN(sizeof(struct VPaintData), "VPaintData");
paint_stroke_set_mode_data(stroke, vpd);
view3d_set_viewcontext(C, &vpd->vc);
vpd->vp_handle = ED_vpaint_proj_handle_create(vpd->vc.scene, ob, &vpd->vertexcosnos);
vpd->indexar = get_indexarray(me);
vpd->paintcol = vpaint_get_current_col(scene, vp);
vpd->is_texbrush = !(brush->vertexpaint_tool == PAINT_BLEND_BLUR) &&
brush->mtex.tex;
/* are we painting onto a modified mesh?,
* if not we can skip face map trickyness */
if (vertex_paint_use_fast_update_check(ob)) {
vpaint_build_poly_facemap(vpd, me);
vpd->use_fast_update = true;
/* printf("Fast update!\n");*/
}
else {
vpd->use_fast_update = false;
/* printf("No fast update!\n");*/
}
/* to keep tracked of modified loops for shared vertex color blending */
if (brush->vertexpaint_tool == PAINT_BLEND_BLUR) {
vpd->mlooptag = MEM_mallocN(sizeof(bool) * me->totloop, "VPaintData mlooptag");
if (vpd->use_fast_update)
vpd->mfacetag = MEM_mallocN(sizeof(bool) * me->totface * 4, "VPaintData mfacetag");
}
/* for filtering */
copy_vpaint_prev(vp, (unsigned int *)me->mloopcol, me->totloop);
/* some old cruft to sort out later */
mul_m4_m4m4(mat, vpd->vc.rv3d->viewmat, ob->obmat);
invert_m4_m4(imat, mat);
copy_m3_m4(vpd->vpimat, imat);
return 1;
}
static void vpaint_paint_poly(VPaint *vp, VPaintData *vpd, Mesh *me,
const unsigned int index, const float mval[2],
const float brush_size_pressure, const float brush_alpha_pressure)
{
ViewContext *vc = &vpd->vc;
Brush *brush = BKE_paint_brush(&vp->paint);
MPoly *mpoly = &me->mpoly[index];
MFace *mf;
MCol *mc;
MLoop *ml;
MLoopCol *mlc;
unsigned int *lcol = ((unsigned int *)me->mloopcol) + mpoly->loopstart;
unsigned int *lcolorig = ((unsigned int *)vp->vpaint_prev) + mpoly->loopstart;
bool *mlooptag = (vpd->mlooptag) ? vpd->mlooptag + mpoly->loopstart : NULL;
bool *mftag;
float alpha;
int i, j;
int totloop = mpoly->totloop;
int brush_alpha_pressure_i = (int)(brush_alpha_pressure * 255.0f);
if (brush->vertexpaint_tool == PAINT_BLEND_BLUR) {
unsigned int blend[4] = {0};
unsigned int tcol;
char *col;
for (j = 0; j < totloop; j++) {
col = (char *)(lcol + j);
blend[0] += col[0];
blend[1] += col[1];
blend[2] += col[2];
blend[3] += col[3];
}
blend[0] = divide_round_i(blend[0], totloop);
blend[1] = divide_round_i(blend[1], totloop);
blend[2] = divide_round_i(blend[2], totloop);
blend[3] = divide_round_i(blend[3], totloop);
col = (char *)&tcol;
col[0] = blend[0];
col[1] = blend[1];
col[2] = blend[2];
col[3] = blend[3];
vpd->paintcol = *((unsigned int *)col);
}
ml = me->mloop + mpoly->loopstart;
for (i = 0; i < totloop; i++, ml++) {
float rgba[4];
unsigned int paintcol;
alpha = calc_vp_alpha_col_dl(vp, vc, vpd->vpimat,
&vpd->vertexcosnos[ml->v], mval,
brush_size_pressure, brush_alpha_pressure, rgba);
if (vpd->is_texbrush) {
float rgba_br[3];
rgb_uchar_to_float(rgba_br, (const unsigned char *)&vpd->paintcol);
mul_v3_v3(rgba_br, rgba);
rgb_float_to_uchar((unsigned char *)&paintcol, rgba_br);
}
else
paintcol = vpd->paintcol;
if (alpha > 0.0f) {
const int alpha_i = (int)(alpha * 255.0f);
lcol[i] = vpaint_blend(vp, lcol[i], lcolorig[i], paintcol, alpha_i, brush_alpha_pressure_i);
if (mlooptag) mlooptag[i] = 1;
}
}
if (vpd->use_fast_update) {
const MeshElemMap *map = &vpd->polyfacemap[index];
/* update vertex colors for tessellations incrementally,
* rather then regenerating the tessellation altogether */
for (i = 0; i < map->count; i++) {
const int index_tessface = map->indices[i];
mf = &me->mface[index_tessface];
mc = &me->mcol[index_tessface * 4];
mftag = &vpd->mfacetag[index_tessface * 4];
ml = me->mloop + mpoly->loopstart;
mlc = me->mloopcol + mpoly->loopstart;
for (j = 0; j < totloop; j++, ml++, mlc++) {
/* search for the loop vertex within the tessface */
const int fidx = BKE_MESH_TESSFACE_VINDEX_ORDER(mf, ml->v);
if (fidx != -1) {
MESH_MLOOPCOL_TO_MCOL(mlc, mc + fidx);
if (mlooptag) {
mftag[fidx] = mlooptag[j];
}
}
}
}
}
}
static void vpaint_stroke_update_step(bContext *C, struct PaintStroke *stroke, PointerRNA *itemptr)
{
Scene *scene = CTX_data_scene(C);
ToolSettings *ts = CTX_data_tool_settings(C);
struct VPaintData *vpd = paint_stroke_mode_data(stroke);
VPaint *vp = ts->vpaint;
Brush *brush = BKE_paint_brush(&vp->paint);
ViewContext *vc = &vpd->vc;
Object *ob = vc->obact;
Mesh *me = ob->data;
float mat[4][4];
int *indexar = vpd->indexar;
int totindex, index;
float mval[2];
const float pressure = RNA_float_get(itemptr, "pressure");
const float brush_size_pressure = BKE_brush_size_get(scene, brush) * (BKE_brush_use_size_pressure(scene, brush) ? pressure : 1.0f);
const float brush_alpha_pressure = BKE_brush_alpha_get(scene, brush) * (BKE_brush_use_alpha_pressure(scene, brush) ? pressure : 1.0f);
RNA_float_get_array(itemptr, "mouse", mval);
view3d_operator_needs_opengl(C);
ED_view3d_init_mats_rv3d(ob, vc->rv3d);
/* load projection matrix */
mul_m4_m4m4(mat, vc->rv3d->persmat, ob->obmat);
/* which faces are involved */
totindex = sample_backbuf_area(vc, indexar, me->totpoly, mval[0], mval[1], brush_size_pressure);
if ((me->editflag & ME_EDIT_PAINT_FACE_SEL) && me->mpoly) {
for (index = 0; index < totindex; index++) {
if (indexar[index] && indexar[index] <= me->totpoly) {
MPoly *mpoly = ((MPoly *)me->mpoly) + (indexar[index] - 1);
if ((mpoly->flag & ME_FACE_SEL) == 0)
indexar[index] = 0;
}
}
}
swap_m4m4(vc->rv3d->persmat, mat);
/* incase we have modifiers */
ED_vpaint_proj_handle_update(vpd->vp_handle, vc->ar, mval);
/* clear modified tag for blur tool */
if (vpd->mlooptag)
memset(vpd->mlooptag, 0, sizeof(bool) * me->totloop);
if (vpd->mfacetag)
memset(vpd->mfacetag, 0, sizeof(bool) * me->totface * 4);
for (index = 0; index < totindex; index++) {
if (indexar[index] && indexar[index] <= me->totpoly) {
vpaint_paint_poly(vp, vpd, me, indexar[index] - 1, mval, brush_size_pressure, brush_alpha_pressure);
}
}
swap_m4m4(vc->rv3d->persmat, mat);
/* was disabled because it is slow, but necessary for blur */
if (brush->vertexpaint_tool == PAINT_BLEND_BLUR) {
int do_tessface = vpd->use_fast_update;
do_shared_vertexcol(me, vpd->mlooptag, vpd->mfacetag, do_tessface);
}
ED_region_tag_redraw(vc->ar);
if (vpd->use_fast_update == false) {
/* recalculate modifier stack to get new colors, slow,
* avoid this if we can! */
DAG_id_tag_update(ob->data, 0);
}
else if (!GPU_buffer_legacy(ob->derivedFinal)) {
/* If using new VBO drawing, mark mcol as dirty to force colors gpu buffer refresh! */
ob->derivedFinal->dirty |= DM_DIRTY_MCOL_UPDATE_DRAW;
}
}
static void vpaint_stroke_done(const bContext *C, struct PaintStroke *stroke)
{
ToolSettings *ts = CTX_data_tool_settings(C);
struct VPaintData *vpd = paint_stroke_mode_data(stroke);
ViewContext *vc = &vpd->vc;
Object *ob = vc->obact;
ED_vpaint_proj_handle_free(vpd->vp_handle);
MEM_freeN(vpd->indexar);
/* frees prev buffer */
copy_vpaint_prev(ts->vpaint, NULL, 0);
if (vpd->polyfacemap) {
MEM_freeN(vpd->polyfacemap);
}
if (vpd->polyfacemap_mem) {
MEM_freeN(vpd->polyfacemap_mem);
}
if (vpd->mlooptag)
MEM_freeN(vpd->mlooptag);
if (vpd->mfacetag)
MEM_freeN(vpd->mfacetag);
WM_event_add_notifier(C, NC_OBJECT | ND_DRAW, ob);
MEM_freeN(vpd);
}
static int vpaint_invoke(bContext *C, wmOperator *op, const wmEvent *event)
{
int retval;
op->customdata = paint_stroke_new(C, op, NULL, vpaint_stroke_test_start,
vpaint_stroke_update_step, NULL,
vpaint_stroke_done, event->type);
if ((retval = op->type->modal(C, op, event)) == OPERATOR_FINISHED) {
paint_stroke_data_free(op);
return OPERATOR_FINISHED;
}
/* add modal handler */
WM_event_add_modal_handler(C, op);
OPERATOR_RETVAL_CHECK(retval);
BLI_assert(retval == OPERATOR_RUNNING_MODAL);
return OPERATOR_RUNNING_MODAL;
}
static int vpaint_exec(bContext *C, wmOperator *op)
{
op->customdata = paint_stroke_new(C, op, NULL, vpaint_stroke_test_start,
vpaint_stroke_update_step, NULL,
vpaint_stroke_done, 0);
/* frees op->customdata */
paint_stroke_exec(C, op);
return OPERATOR_FINISHED;
}
static void vpaint_cancel(bContext *C, wmOperator *op)
{
paint_stroke_cancel(C, op);
}
void PAINT_OT_vertex_paint(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Vertex Paint";
ot->idname = "PAINT_OT_vertex_paint";
ot->description = "Paint a stroke in the active vertex color layer";
/* api callbacks */
ot->invoke = vpaint_invoke;
ot->modal = paint_stroke_modal;
ot->exec = vpaint_exec;
ot->poll = vertex_paint_poll;
ot->cancel = vpaint_cancel;
/* flags */
ot->flag = OPTYPE_UNDO | OPTYPE_BLOCKING;
RNA_def_collection_runtime(ot->srna, "stroke", &RNA_OperatorStrokeElement, "Stroke", "");
}
/* ********************** weight from bones operator ******************* */
static int weight_from_bones_poll(bContext *C)
{
Object *ob = CTX_data_active_object(C);
return (ob && (ob->mode & OB_MODE_WEIGHT_PAINT) && modifiers_isDeformedByArmature(ob));
}
static int weight_from_bones_exec(bContext *C, wmOperator *op)
{
Scene *scene = CTX_data_scene(C);
Object *ob = CTX_data_active_object(C);
Object *armob = modifiers_isDeformedByArmature(ob);
Mesh *me = ob->data;
int type = RNA_enum_get(op->ptr, "type");
create_vgroups_from_armature(op->reports, scene, ob, armob, type, (me->editflag & ME_EDIT_MIRROR_X));
DAG_id_tag_update(&me->id, 0);
WM_event_add_notifier(C, NC_GEOM | ND_DATA, me);
return OPERATOR_FINISHED;
}
void PAINT_OT_weight_from_bones(wmOperatorType *ot)
{
static EnumPropertyItem type_items[] = {
{ARM_GROUPS_AUTO, "AUTOMATIC", 0, "Automatic", "Automatic weights from bones"},
{ARM_GROUPS_ENVELOPE, "ENVELOPES", 0, "From Envelopes", "Weights from envelopes with user defined radius"},
{0, NULL, 0, NULL, NULL}};
/* identifiers */
ot->name = "Weight from Bones";
ot->idname = "PAINT_OT_weight_from_bones";
ot->description = "Set the weights of the groups matching the attached armature's selected bones, "
"using the distance between the vertices and the bones";
/* api callbacks */
ot->exec = weight_from_bones_exec;
ot->invoke = WM_menu_invoke;
ot->poll = weight_from_bones_poll;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
/* properties */
ot->prop = RNA_def_enum(ot->srna, "type", type_items, 0, "Type", "Method to use for assigning weights");
}
/* *** VGroups Gradient *** */
typedef struct DMGradient_vertStore {
float sco[2];
float weight_orig;
enum {
VGRAD_STORE_NOP = 0,
VGRAD_STORE_DW_EXIST = (1 << 0)
} flag;
} DMGradient_vertStore;
typedef struct DMGradient_userData {
struct ARegion *ar;
Scene *scene;
Mesh *me;
Brush *brush;
const float *sco_start; /* [2] */
const float *sco_end; /* [2] */
float sco_line_div; /* store (1.0f / len_v2v2(sco_start, sco_end)) */
int def_nr;
short is_init;
DMGradient_vertStore *vert_cache;
/* options */
short use_select;
short type;
float weightpaint;
} DMGradient_userData;
static void gradientVert__mapFunc(void *userData, int index, const float co[3],
const float UNUSED(no_f[3]), const short UNUSED(no_s[3]))
{
DMGradient_userData *grad_data = userData;
Mesh *me = grad_data->me;
if (grad_data->use_select == false || (me->mvert[index].flag & SELECT)) {
DMGradient_vertStore *vs = &grad_data->vert_cache[index];
/* run first pass only, could be split into its own mapFunc
* the screen coords of the verts need to be cached because
* updating the mesh may move them about (entering feedback loop) */
if (grad_data->is_init) {
if (ED_view3d_project_float_object(grad_data->ar,
co, vs->sco,
V3D_PROJ_TEST_CLIP_BB | V3D_PROJ_TEST_CLIP_NEAR) == V3D_PROJ_RET_OK)
{
/* ok */
MDeformVert *dv = &me->dvert[index];
MDeformWeight *dw;
dw = defvert_find_index(dv, grad_data->def_nr);
if (dw) {
vs->weight_orig = dw->weight;
vs->flag = VGRAD_STORE_DW_EXIST;
}
else {
vs->weight_orig = 0.0f;
vs->flag = VGRAD_STORE_NOP;
}
}
else {
/* no go */
copy_v2_fl(vs->sco, FLT_MAX);
}
}
/* end init */
if (vs->sco[0] != FLT_MAX) {
float alpha;
if (grad_data->type == WPAINT_GRADIENT_TYPE_LINEAR) {
alpha = line_point_factor_v2(vs->sco, grad_data->sco_start, grad_data->sco_end);
}
else {
BLI_assert(grad_data->type == WPAINT_GRADIENT_TYPE_RADIAL);
alpha = len_v2v2(grad_data->sco_start, vs->sco) * grad_data->sco_line_div;
}
/* no need to clamp 'alpha' yet */
/* adjust weight */
alpha = BKE_brush_curve_strength_clamp(grad_data->brush, alpha, 1.0f);
if (alpha != 0.0f) {
MDeformVert *dv = &me->dvert[index];
MDeformWeight *dw = defvert_verify_index(dv, grad_data->def_nr);
// dw->weight = alpha; // testing
int tool = grad_data->brush->vertexpaint_tool;
float testw;
/* init if we just added */
testw = wpaint_blend_tool(tool, vs->weight_orig, grad_data->weightpaint, alpha * grad_data->brush->alpha);
CLAMP(testw, 0.0f, 1.0f);
dw->weight = testw;
}
else {
MDeformVert *dv = &me->dvert[index];
if (vs->flag & VGRAD_STORE_DW_EXIST) {
/* normally we NULL check, but in this case we know it exists */
MDeformWeight *dw = defvert_find_index(dv, grad_data->def_nr);
dw->weight = vs->weight_orig;
}
else {
/* wasn't originally existing, remove */
MDeformWeight *dw = defvert_find_index(dv, grad_data->def_nr);
if (dw) {
defvert_remove_group(dv, dw);
}
}
}
}
}
}
static int paint_weight_gradient_modal(bContext *C, wmOperator *op, const wmEvent *event)
{
int ret = WM_gesture_straightline_modal(C, op, event);
if (ret & OPERATOR_RUNNING_MODAL) {
if (event->type == LEFTMOUSE && event->val == KM_RELEASE) { /* XXX, hardcoded */
/* generally crap! redo! */
WM_gesture_straightline_cancel(C, op);
ret &= ~OPERATOR_RUNNING_MODAL;
ret |= OPERATOR_FINISHED;
}
}
if (ret & OPERATOR_CANCELLED) {
ToolSettings *ts = CTX_data_tool_settings(C);
VPaint *wp = ts->wpaint;
Object *ob = CTX_data_active_object(C);
Mesh *me = ob->data;
if (wp->wpaint_prev) {
BKE_defvert_array_free_elems(me->dvert, me->totvert);
BKE_defvert_array_copy(me->dvert, wp->wpaint_prev, me->totvert);
free_wpaint_prev(wp);
}
DAG_id_tag_update(&ob->id, OB_RECALC_DATA);
WM_event_add_notifier(C, NC_OBJECT | ND_DRAW, ob);
}
else if (ret & OPERATOR_FINISHED) {
ToolSettings *ts = CTX_data_tool_settings(C);
VPaint *wp = ts->wpaint;
free_wpaint_prev(wp);
}
return ret;
}
static int paint_weight_gradient_exec(bContext *C, wmOperator *op)
{
wmGesture *gesture = op->customdata;
DMGradient_vertStore *vert_cache;
struct ARegion *ar = CTX_wm_region(C);
Scene *scene = CTX_data_scene(C);
Object *ob = CTX_data_active_object(C);
Mesh *me = ob->data;
int x_start = RNA_int_get(op->ptr, "xstart");
int y_start = RNA_int_get(op->ptr, "ystart");
int x_end = RNA_int_get(op->ptr, "xend");
int y_end = RNA_int_get(op->ptr, "yend");
float sco_start[2] = {x_start, y_start};
float sco_end[2] = {x_end, y_end};
const bool is_interactive = (gesture != NULL);
DerivedMesh *dm = mesh_get_derived_final(scene, ob, scene->customdata_mask);
DMGradient_userData data = {NULL};
if (is_interactive) {
if (gesture->userdata == NULL) {
VPaint *wp = scene->toolsettings->wpaint;
gesture->userdata = MEM_mallocN(sizeof(DMGradient_vertStore) * me->totvert, __func__);
data.is_init = true;
copy_wpaint_prev(wp, me->dvert, me->totvert);
/* on init only, convert face -> vert sel */
if (me->editflag & ME_EDIT_PAINT_FACE_SEL) {
BKE_mesh_flush_select_from_polys(me);
}
}
vert_cache = gesture->userdata;
}
else {
if (wpaint_ensure_data(C, op) == false) {
return OPERATOR_CANCELLED;
}
data.is_init = true;
vert_cache = MEM_mallocN(sizeof(DMGradient_vertStore) * me->totvert, __func__);
}
data.ar = ar;
data.scene = scene;
data.me = ob->data;
data.sco_start = sco_start;
data.sco_end = sco_end;
data.sco_line_div = 1.0f / len_v2v2(sco_start, sco_end);
data.def_nr = ob->actdef - 1;
data.use_select = (me->editflag & (ME_EDIT_PAINT_FACE_SEL | ME_EDIT_PAINT_VERT_SEL));
data.vert_cache = vert_cache;
data.type = RNA_enum_get(op->ptr, "type");
{
ToolSettings *ts = CTX_data_tool_settings(C);
VPaint *wp = ts->wpaint;
struct Brush *brush = BKE_paint_brush(&wp->paint);
curvemapping_initialize(brush->curve);
data.brush = brush;
data.weightpaint = BKE_brush_weight_get(scene, brush);
}
ED_view3d_init_mats_rv3d(ob, ar->regiondata);
dm->foreachMappedVert(dm, gradientVert__mapFunc, &data, DM_FOREACH_NOP);
DAG_id_tag_update(&ob->id, OB_RECALC_DATA);
WM_event_add_notifier(C, NC_OBJECT | ND_DRAW, ob);
if (is_interactive == false) {
MEM_freeN(vert_cache);
}
return OPERATOR_FINISHED;
}
static int paint_weight_gradient_invoke(bContext *C, wmOperator *op, const wmEvent *event)
{
int ret;
if (wpaint_ensure_data(C, op) == false) {
return OPERATOR_CANCELLED;
}
ret = WM_gesture_straightline_invoke(C, op, event);
if (ret & OPERATOR_RUNNING_MODAL) {
struct ARegion *ar = CTX_wm_region(C);
if (ar->regiontype == RGN_TYPE_WINDOW) {
if (event->type == LEFTMOUSE && event->val == KM_PRESS) { /* TODO, hardcoded, extend WM_gesture_straightline_ */
wmGesture *gesture = op->customdata;
gesture->mode = 1;
}
}
}
return ret;
}
void PAINT_OT_weight_gradient(wmOperatorType *ot)
{
/* defined in DNA_space_types.h */
static EnumPropertyItem gradient_types[] = {
{WPAINT_GRADIENT_TYPE_LINEAR, "LINEAR", 0, "Linear", ""},
{WPAINT_GRADIENT_TYPE_RADIAL, "RADIAL", 0, "Radial", ""},
{0, NULL, 0, NULL, NULL}
};
PropertyRNA *prop;
/* identifiers */
ot->name = "Weight Gradient";
ot->idname = "PAINT_OT_weight_gradient";
ot->description = "Draw a line to apply a weight gradient to selected vertices";
/* api callbacks */
ot->invoke = paint_weight_gradient_invoke;
ot->modal = paint_weight_gradient_modal;
ot->exec = paint_weight_gradient_exec;
ot->poll = weight_paint_poll;
ot->cancel = WM_gesture_straightline_cancel;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
prop = RNA_def_enum(ot->srna, "type", gradient_types, 0, "Type", "");
RNA_def_property_flag(prop, PROP_SKIP_SAVE);
WM_operator_properties_gesture_straightline(ot, CURSOR_EDIT);
}
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