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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) 2010 by Nicholas Bishop
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s):
*
* ***** END GPL LICENSE BLOCK *****
*
* Implements the PBVH node hiding operator
*
*/
/** \file blender/editors/sculpt_paint/paint_hide.c
* \ingroup edsculpt
*/
#include "MEM_guardedalloc.h"
#include "BLI_bitmap.h"
#include "BLI_math_vector.h"
#include "BLI_utildefines.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "BKE_pbvh.h"
#include "BKE_ccg.h"
#include "BKE_context.h"
#include "BKE_DerivedMesh.h"
#include "BKE_mesh.h"
#include "BKE_multires.h"
#include "BKE_paint.h"
#include "BKE_subsurf.h"
#include "BIF_glutil.h"
#include "WM_api.h"
#include "WM_types.h"
#include "ED_screen.h"
#include "ED_view3d.h"
#include "RNA_access.h"
#include "RNA_define.h"
#include "bmesh.h"
#include "paint_intern.h"
#include "sculpt_intern.h" /* for undo push */
#include <assert.h>
/* return true if the element should be hidden/shown */
static bool is_effected(PartialVisArea area,
float planes[4][4],
const float co[3],
const float mask)
{
if (area == PARTIALVIS_ALL)
return 1;
else if (area == PARTIALVIS_MASKED) {
return mask > 0.5f;
}
else {
bool inside = isect_point_planes_v3(planes, 4, co);
return ((inside && area == PARTIALVIS_INSIDE) ||
(!inside && area == PARTIALVIS_OUTSIDE));
}
}
static void partialvis_update_mesh(Object *ob,
PBVH *pbvh,
PBVHNode *node,
PartialVisAction action,
PartialVisArea area,
float planes[4][4])
{
Mesh *me = ob->data;
MVert *mvert;
const float *paint_mask;
int *vert_indices;
int totvert, i;
bool any_changed = false, any_visible = false;
BKE_pbvh_node_num_verts(pbvh, node, NULL, &totvert);
BKE_pbvh_node_get_verts(pbvh, node, &vert_indices, &mvert);
paint_mask = CustomData_get_layer(&me->vdata, CD_PAINT_MASK);
sculpt_undo_push_node(ob, node, SCULPT_UNDO_HIDDEN);
for (i = 0; i < totvert; i++) {
MVert *v = &mvert[vert_indices[i]];
float vmask = paint_mask ? paint_mask[vert_indices[i]] : 0;
/* hide vertex if in the hide volume */
if (is_effected(area, planes, v->co, vmask)) {
if (action == PARTIALVIS_HIDE)
v->flag |= ME_HIDE;
else
v->flag &= ~ME_HIDE;
any_changed = true;
}
if (!(v->flag & ME_HIDE))
any_visible = true;
}
if (any_changed) {
BKE_pbvh_node_mark_rebuild_draw(node);
BKE_pbvh_node_fully_hidden_set(node, !any_visible);
}
}
/* Hide or show elements in multires grids with a special GridFlags
* customdata layer. */
static void partialvis_update_grids(Object *ob,
PBVH *pbvh,
PBVHNode *node,
PartialVisAction action,
PartialVisArea area,
float planes[4][4])
{
CCGElem **grids;
CCGKey key;
BLI_bitmap **grid_hidden;
int *grid_indices, totgrid, i;
bool any_changed = false, any_visible = false;
/* get PBVH data */
BKE_pbvh_node_get_grids(pbvh, node,
&grid_indices, &totgrid, NULL, NULL,
&grids, NULL);
grid_hidden = BKE_pbvh_grid_hidden(pbvh);
BKE_pbvh_get_grid_key(pbvh, &key);
sculpt_undo_push_node(ob, node, SCULPT_UNDO_HIDDEN);
for (i = 0; i < totgrid; i++) {
int any_hidden = 0;
int g = grid_indices[i], x, y;
BLI_bitmap *gh = grid_hidden[g];
if (!gh) {
switch (action) {
case PARTIALVIS_HIDE:
/* create grid flags data */
gh = grid_hidden[g] = BLI_BITMAP_NEW(key.grid_area,
"partialvis_update_grids");
break;
case PARTIALVIS_SHOW:
/* entire grid is visible, nothing to show */
continue;
}
}
else if (action == PARTIALVIS_SHOW && area == PARTIALVIS_ALL) {
/* special case if we're showing all, just free the
* grid */
MEM_freeN(gh);
grid_hidden[g] = NULL;
any_changed = true;
any_visible = true;
continue;
}
for (y = 0; y < key.grid_size; y++) {
for (x = 0; x < key.grid_size; x++) {
CCGElem *elem = CCG_grid_elem(&key, grids[g], x, y);
const float *co = CCG_elem_co(&key, elem);
float mask = key.has_mask ? *CCG_elem_mask(&key, elem) : 0.0f;
/* skip grid element if not in the effected area */
if (is_effected(area, planes, co, mask)) {
/* set or clear the hide flag */
BLI_BITMAP_MODIFY(gh, y * key.grid_size + x,
action == PARTIALVIS_HIDE);
any_changed = true;
}
/* keep track of whether any elements are still hidden */
if (BLI_BITMAP_GET(gh, y * key.grid_size + x))
any_hidden = true;
else
any_visible = true;
}
}
/* if everything in the grid is now visible, free the grid
* flags */
if (!any_hidden) {
MEM_freeN(gh);
grid_hidden[g] = NULL;
}
}
/* mark updates if anything was hidden/shown */
if (any_changed) {
BKE_pbvh_node_mark_rebuild_draw(node);
BKE_pbvh_node_fully_hidden_set(node, !any_visible);
multires_mark_as_modified(ob, MULTIRES_HIDDEN_MODIFIED);
}
}
static void partialvis_update_bmesh_verts(BMesh *bm,
GSet *verts,
PartialVisAction action,
PartialVisArea area,
float planes[4][4],
bool *any_changed,
bool *any_visible)
{
GSetIterator gs_iter;
GSET_ITER (gs_iter, verts) {
BMVert *v = BLI_gsetIterator_getKey(&gs_iter);
float *vmask = CustomData_bmesh_get(&bm->vdata,
v->head.data,
CD_PAINT_MASK);
/* hide vertex if in the hide volume */
if (is_effected(area, planes, v->co, *vmask)) {
if (action == PARTIALVIS_HIDE)
BM_elem_flag_enable(v, BM_ELEM_HIDDEN);
else
BM_elem_flag_disable(v, BM_ELEM_HIDDEN);
(*any_changed) = true;
}
if (!BM_elem_flag_test(v, BM_ELEM_HIDDEN))
(*any_visible) = true;
}
}
static void partialvis_update_bmesh_faces(GSet *faces, PartialVisAction action)
{
GSetIterator gs_iter;
GSET_ITER (gs_iter, faces) {
BMFace *f = BLI_gsetIterator_getKey(&gs_iter);
if ((action == PARTIALVIS_HIDE) && paint_is_bmesh_face_hidden(f))
BM_elem_flag_enable(f, BM_ELEM_HIDDEN);
else
BM_elem_flag_disable(f, BM_ELEM_HIDDEN);
}
}
static void partialvis_update_bmesh(Object *ob,
PBVH *pbvh,
PBVHNode *node,
PartialVisAction action,
PartialVisArea area,
float planes[4][4])
{
BMesh *bm;
GSet *unique, *other, *faces;
bool any_changed = false, any_visible = false;
bm = BKE_pbvh_get_bmesh(pbvh);
unique = BKE_pbvh_bmesh_node_unique_verts(node);
other = BKE_pbvh_bmesh_node_other_verts(node);
faces = BKE_pbvh_bmesh_node_faces(node);
sculpt_undo_push_node(ob, node, SCULPT_UNDO_HIDDEN);
partialvis_update_bmesh_verts(bm,
unique,
action,
area,
planes,
&any_changed,
&any_visible);
partialvis_update_bmesh_verts(bm,
other,
action,
area,
planes,
&any_changed,
&any_visible);
/* finally loop over node faces and tag the ones that are fully hidden */
partialvis_update_bmesh_faces(faces, action);
if (any_changed) {
BKE_pbvh_node_mark_rebuild_draw(node);
BKE_pbvh_node_fully_hidden_set(node, !any_visible);
}
}
static void rect_from_props(rcti *rect, PointerRNA *ptr)
{
rect->xmin = RNA_int_get(ptr, "xmin");
rect->ymin = RNA_int_get(ptr, "ymin");
rect->xmax = RNA_int_get(ptr, "xmax");
rect->ymax = RNA_int_get(ptr, "ymax");
}
static void clip_planes_from_rect(bContext *C,
float clip_planes[4][4],
const rcti *rect)
{
ViewContext vc;
BoundBox bb;
bglMats mats = {{0}};
view3d_operator_needs_opengl(C);
view3d_set_viewcontext(C, &vc);
view3d_get_transformation(vc.ar, vc.rv3d, vc.obact, &mats);
ED_view3d_clipping_calc(&bb, clip_planes, &mats, rect);
negate_m4(clip_planes);
}
/* If mode is inside, get all PBVH nodes that lie at least partially
* inside the clip_planes volume. If mode is outside, get all nodes
* that lie at least partially outside the volume. If showing all, get
* all nodes. */
static void get_pbvh_nodes(PBVH *pbvh,
PBVHNode ***nodes,
int *totnode,
float clip_planes[4][4],
PartialVisArea mode)
{
BKE_pbvh_SearchCallback cb = NULL;
/* select search callback */
switch (mode) {
case PARTIALVIS_INSIDE:
cb = BKE_pbvh_node_planes_contain_AABB;
break;
case PARTIALVIS_OUTSIDE:
cb = BKE_pbvh_node_planes_exclude_AABB;
break;
case PARTIALVIS_ALL:
case PARTIALVIS_MASKED:
break;
}
BKE_pbvh_search_gather(pbvh, cb, clip_planes, nodes, totnode);
}
static int hide_show_exec(bContext *C, wmOperator *op)
{
ARegion *ar = CTX_wm_region(C);
Object *ob = CTX_data_active_object(C);
Mesh *me = ob->data;
PartialVisAction action;
PartialVisArea area;
PBVH *pbvh;
PBVHNode **nodes;
DerivedMesh *dm;
PBVHType pbvh_type;
float clip_planes[4][4];
rcti rect;
int totnode, i;
/* read operator properties */
action = RNA_enum_get(op->ptr, "action");
area = RNA_enum_get(op->ptr, "area");
rect_from_props(&rect, op->ptr);
clip_planes_from_rect(C, clip_planes, &rect);
dm = mesh_get_derived_final(CTX_data_scene(C), ob, CD_MASK_BAREMESH);
pbvh = dm->getPBVH(ob, dm);
ob->sculpt->pbvh = pbvh;
get_pbvh_nodes(pbvh, &nodes, &totnode, clip_planes, area);
pbvh_type = BKE_pbvh_type(pbvh);
/* start undo */
switch (action) {
case PARTIALVIS_HIDE:
sculpt_undo_push_begin("Hide area");
break;
case PARTIALVIS_SHOW:
sculpt_undo_push_begin("Show area");
break;
}
for (i = 0; i < totnode; i++) {
switch (pbvh_type) {
case PBVH_FACES:
partialvis_update_mesh(ob, pbvh, nodes[i], action, area, clip_planes);
break;
case PBVH_GRIDS:
partialvis_update_grids(ob, pbvh, nodes[i], action, area, clip_planes);
break;
case PBVH_BMESH:
partialvis_update_bmesh(ob, pbvh, nodes[i], action, area, clip_planes);
break;
}
}
if (nodes)
MEM_freeN(nodes);
/* end undo */
sculpt_undo_push_end();
/* ensure that edges and faces get hidden as well (not used by
* sculpt but it looks wrong when entering editmode otherwise) */
if (pbvh_type == PBVH_FACES) {
BKE_mesh_flush_hidden_from_verts(me);
}
ED_region_tag_redraw(ar);
return OPERATOR_FINISHED;
}
static int hide_show_invoke(bContext *C, wmOperator *op, const wmEvent *event)
{
PartialVisArea area = RNA_enum_get(op->ptr, "area");
if (!ELEM(area, PARTIALVIS_ALL, PARTIALVIS_MASKED))
return WM_border_select_invoke(C, op, event);
else
return op->type->exec(C, op);
}
void PAINT_OT_hide_show(struct wmOperatorType *ot)
{
static EnumPropertyItem action_items[] = {
{PARTIALVIS_HIDE, "HIDE", 0, "Hide", "Hide vertices"},
{PARTIALVIS_SHOW, "SHOW", 0, "Show", "Show vertices"},
{0, NULL, 0, NULL, NULL}
};
static EnumPropertyItem area_items[] = {
{PARTIALVIS_OUTSIDE, "OUTSIDE", 0, "Outside", "Hide or show vertices outside the selection"},
{PARTIALVIS_INSIDE, "INSIDE", 0, "Inside", "Hide or show vertices inside the selection"},
{PARTIALVIS_ALL, "ALL", 0, "All", "Hide or show all vertices"},
{PARTIALVIS_MASKED, "MASKED", 0, "Masked", "Hide or show vertices that are masked (minimum mask value of 0.5)"},
{0, NULL, 0, NULL, NULL}
};
/* identifiers */
ot->name = "Hide/Show";
ot->idname = "PAINT_OT_hide_show";
ot->description = "Hide/show some vertices";
/* api callbacks */
ot->invoke = hide_show_invoke;
ot->modal = WM_border_select_modal;
ot->exec = hide_show_exec;
/* sculpt-only for now */
ot->poll = sculpt_mode_poll_view3d;
ot->flag = OPTYPE_REGISTER;
/* rna */
RNA_def_enum(ot->srna, "action", action_items, PARTIALVIS_HIDE,
"Action", "Whether to hide or show vertices");
RNA_def_enum(ot->srna, "area", area_items, PARTIALVIS_INSIDE,
"Area", "Which vertices to hide or show");
WM_operator_properties_border(ot);
}
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