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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.
*
* Contributor(s): Joseph Eagar, Howard Trickey, Campbell Barton
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/editors/mesh/editmesh_bevel.c
* \ingroup edmesh
*/
#include "MEM_guardedalloc.h"
#include "DNA_object_types.h"
#include "BLI_string.h"
#include "BLI_math.h"
#include "BLF_translation.h"
#include "BKE_context.h"
#include "BKE_global.h"
#include "BKE_editmesh.h"
#include "BKE_unit.h"
#include "RNA_define.h"
#include "RNA_access.h"
#include "WM_api.h"
#include "WM_types.h"
#include "ED_mesh.h"
#include "ED_numinput.h"
#include "ED_screen.h"
#include "ED_space_api.h"
#include "ED_transform.h"
#include "ED_view3d.h"
#include "mesh_intern.h" /* own include */
#define MVAL_PIXEL_MARGIN 5.0f
typedef struct {
BMEditMesh *em;
float initial_length;
float pixel_size; /* use when mouse input is interpreted as spatial distance */
bool is_modal;
NumInput num_input;
float shift_factor; /* The current factor when shift is pressed. Negative when shift not active. */
/* modal only */
float mcenter[2];
BMBackup mesh_backup;
void *draw_handle_pixel;
short twtype;
} BevelData;
#define HEADER_LENGTH 180
static void edbm_bevel_update_header(wmOperator *op, bContext *C)
{
const char *str = IFACE_("Confirm: (Enter/LMB), Cancel: (Esc/RMB), Offset: %s, Segments: %d");
char msg[HEADER_LENGTH];
ScrArea *sa = CTX_wm_area(C);
if (sa) {
BevelData *opdata = op->customdata;
char offset_str[NUM_STR_REP_LEN];
if (hasNumInput(&opdata->num_input)) {
outputNumInput(&opdata->num_input, offset_str);
}
else {
BLI_snprintf(offset_str, NUM_STR_REP_LEN, "%f", RNA_float_get(op->ptr, "offset"));
}
BLI_snprintf(msg, HEADER_LENGTH, str, offset_str, RNA_int_get(op->ptr, "segments"));
ED_area_headerprint(sa, msg);
}
}
static bool edbm_bevel_init(bContext *C, wmOperator *op, const bool is_modal)
{
Object *obedit = CTX_data_edit_object(C);
Scene *scene = CTX_data_scene(C);
BMEditMesh *em = BKE_editmesh_from_object(obedit);
BevelData *opdata;
if (em->bm->totvertsel == 0) {
return false;
}
op->customdata = opdata = MEM_mallocN(sizeof(BevelData), "beveldata_mesh_operator");
opdata->em = em;
opdata->is_modal = is_modal;
opdata->shift_factor = -1.0f;
initNumInput(&opdata->num_input);
opdata->num_input.idx_max = 0;
opdata->num_input.val_flag[0] |= NUM_NO_NEGATIVE;
opdata->num_input.unit_sys = scene->unit.system;
opdata->num_input.unit_type[0] = B_UNIT_NONE; /* Not sure this is a factor or a unit? */
/* avoid the cost of allocating a bm copy */
if (is_modal) {
View3D *v3d = CTX_wm_view3d(C);
ARegion *ar = CTX_wm_region(C);
opdata->mesh_backup = EDBM_redo_state_store(em);
opdata->draw_handle_pixel = ED_region_draw_cb_activate(ar->type, ED_region_draw_mouse_line_cb, opdata->mcenter, REGION_DRAW_POST_PIXEL);
G.moving = G_TRANSFORM_EDIT;
opdata->twtype = v3d->twtype;
v3d->twtype = 0;
}
return true;
}
static bool edbm_bevel_calc(wmOperator *op)
{
BevelData *opdata = op->customdata;
BMEditMesh *em = opdata->em;
BMOperator bmop;
const float offset = RNA_float_get(op->ptr, "offset");
const int offset_type = RNA_enum_get(op->ptr, "offset_type");
const int segments = RNA_int_get(op->ptr, "segments");
const float profile = RNA_float_get(op->ptr, "profile");
const bool vertex_only = RNA_boolean_get(op->ptr, "vertex_only");
/* revert to original mesh */
if (opdata->is_modal) {
EDBM_redo_state_restore(opdata->mesh_backup, em, false);
}
EDBM_op_init(em, &bmop, op,
"bevel geom=%hev offset=%f segments=%i vertex_only=%b offset_type=%i profile=%f",
BM_ELEM_SELECT, offset, segments, vertex_only, offset_type, profile);
BMO_op_exec(em->bm, &bmop);
if (offset != 0.0f) {
/* not essential, but we may have some loose geometry that
* won't get bevel'd and better not leave it selected */
EDBM_flag_disable_all(em, BM_ELEM_SELECT);
BMO_slot_buffer_hflag_enable(em->bm, bmop.slots_out, "faces.out", BM_FACE, BM_ELEM_SELECT, true);
}
/* no need to de-select existing geometry */
if (!EDBM_op_finish(em, &bmop, op, true))
return false;
EDBM_mesh_normals_update(opdata->em);
EDBM_update_generic(opdata->em, true, true);
return true;
}
static void edbm_bevel_exit(bContext *C, wmOperator *op)
{
BevelData *opdata = op->customdata;
ScrArea *sa = CTX_wm_area(C);
if (sa) {
ED_area_headerprint(sa, NULL);
}
if (opdata->is_modal) {
View3D *v3d = CTX_wm_view3d(C);
ARegion *ar = CTX_wm_region(C);
EDBM_redo_state_free(&opdata->mesh_backup, NULL, false);
ED_region_draw_cb_exit(ar->type, opdata->draw_handle_pixel);
v3d->twtype = opdata->twtype;
G.moving = 0;
}
MEM_freeN(opdata);
op->customdata = NULL;
}
static void edbm_bevel_cancel(bContext *C, wmOperator *op)
{
BevelData *opdata = op->customdata;
if (opdata->is_modal) {
EDBM_redo_state_free(&opdata->mesh_backup, opdata->em, true);
EDBM_update_generic(opdata->em, false, true);
}
edbm_bevel_exit(C, op);
/* need to force redisplay or we may still view the modified result */
ED_region_tag_redraw(CTX_wm_region(C));
}
/* bevel! yay!!*/
static int edbm_bevel_exec(bContext *C, wmOperator *op)
{
if (!edbm_bevel_init(C, op, false)) {
return OPERATOR_CANCELLED;
}
if (!edbm_bevel_calc(op)) {
edbm_bevel_cancel(C, op);
return OPERATOR_CANCELLED;
}
edbm_bevel_exit(C, op);
return OPERATOR_FINISHED;
}
static int edbm_bevel_invoke(bContext *C, wmOperator *op, const wmEvent *event)
{
/* TODO make modal keymap (see fly mode) */
RegionView3D *rv3d = CTX_wm_region_view3d(C);
BevelData *opdata;
float mlen[2];
float center_3d[3];
if (!edbm_bevel_init(C, op, true)) {
return OPERATOR_CANCELLED;
}
opdata = op->customdata;
/* initialize mouse values */
if (!calculateTransformCenter(C, V3D_CENTROID, center_3d, opdata->mcenter)) {
/* in this case the tool will likely do nothing,
* ideally this will never happen and should be checked for above */
opdata->mcenter[0] = opdata->mcenter[1] = 0;
}
mlen[0] = opdata->mcenter[0] - event->mval[0];
mlen[1] = opdata->mcenter[1] - event->mval[1];
opdata->initial_length = len_v2(mlen);
opdata->pixel_size = rv3d ? ED_view3d_pixel_size(rv3d, center_3d) : 1.0f;
edbm_bevel_update_header(op, C);
if (!edbm_bevel_calc(op)) {
edbm_bevel_cancel(C, op);
return OPERATOR_CANCELLED;
}
WM_event_add_modal_handler(C, op);
return OPERATOR_RUNNING_MODAL;
}
static float edbm_bevel_mval_factor(wmOperator *op, const wmEvent *event)
{
BevelData *opdata = op->customdata;
bool use_dist = true;
bool is_percent = false;
float mdiff[2];
float factor;
mdiff[0] = opdata->mcenter[0] - event->mval[0];
mdiff[1] = opdata->mcenter[1] - event->mval[1];
is_percent = (RNA_enum_get(op->ptr, "offset_type") == BEVEL_AMT_PERCENT);
if (use_dist) {
factor = ((len_v2(mdiff) - MVAL_PIXEL_MARGIN) - opdata->initial_length) * opdata->pixel_size;
}
else {
factor = (len_v2(mdiff) - MVAL_PIXEL_MARGIN) / opdata->initial_length;
factor = factor - 1.0f; /* a different kind of buffer where nothing happens */
}
/* Fake shift-transform... */
if (event->shift) {
if (opdata->shift_factor < 0.0f) {
opdata->shift_factor = RNA_float_get(op->ptr, "offset");
}
factor = (factor - opdata->shift_factor) * 0.1f + opdata->shift_factor;
}
else if (opdata->shift_factor >= 0.0f)
opdata->shift_factor = -1.0f;
/* clamp differently based on distance/factor */
if (use_dist) {
if (factor < 0.0f) factor = 0.0f;
}
else {
if (is_percent) {
factor *= 100.0f;
CLAMP(factor, 0.0f, 100.0f);
}
else {
CLAMP(factor, 0.0f, 1.0f);
}
}
return factor;
}
static int edbm_bevel_modal(bContext *C, wmOperator *op, const wmEvent *event)
{
BevelData *opdata = op->customdata;
int segments = RNA_int_get(op->ptr, "segments");
if (event->val == KM_PRESS && hasNumInput(&opdata->num_input)) {
/* Modal numinput active, try to handle numeric inputs first... */
if (handleNumInput(C, &opdata->num_input, event)) {
float value = RNA_float_get(op->ptr, "offset");
applyNumInput(&opdata->num_input, &value);
RNA_float_set(op->ptr, "offset", value);
edbm_bevel_calc(op);
edbm_bevel_update_header(op, C);
return OPERATOR_RUNNING_MODAL;
}
}
else {
bool handled = false;
switch (event->type) {
case ESCKEY:
case RIGHTMOUSE:
edbm_bevel_cancel(C, op);
return OPERATOR_CANCELLED;
case MOUSEMOVE:
if (!hasNumInput(&opdata->num_input)) {
const float factor = edbm_bevel_mval_factor(op, event);
RNA_float_set(op->ptr, "offset", factor);
edbm_bevel_calc(op);
edbm_bevel_update_header(op, C);
handled = true;
}
break;
case LEFTMOUSE:
case PADENTER:
case RETKEY:
edbm_bevel_calc(op);
edbm_bevel_exit(C, op);
return OPERATOR_FINISHED;
/* Note this will prevent padplus and padminus to ever activate modal numinput.
* This is not really an issue though, as we only expect positive values here...
* Else we could force them to only modify segments number when shift is pressed, or so.
*/
case WHEELUPMOUSE: /* change number of segments */
case PADPLUSKEY:
if (event->val == KM_RELEASE)
break;
segments++;
RNA_int_set(op->ptr, "segments", segments);
edbm_bevel_calc(op);
edbm_bevel_update_header(op, C);
handled = true;
break;
case WHEELDOWNMOUSE: /* change number of segments */
case PADMINUS:
if (event->val == KM_RELEASE)
break;
segments = max_ii(segments - 1, 1);
RNA_int_set(op->ptr, "segments", segments);
edbm_bevel_calc(op);
edbm_bevel_update_header(op, C);
handled = true;
break;
}
if (!handled && event->val == KM_PRESS) {
/* Modal numinput inactive, try to handle numeric inputs last... */
if (handleNumInput(C, &opdata->num_input, event)) {
float value = RNA_float_get(op->ptr, "offset");
applyNumInput(&opdata->num_input, &value);
RNA_float_set(op->ptr, "offset", value);
edbm_bevel_calc(op);
edbm_bevel_update_header(op, C);
return OPERATOR_RUNNING_MODAL;
}
}
}
return OPERATOR_RUNNING_MODAL;
}
static void mesh_ot_bevel_offset_range_func(PointerRNA *ptr, PropertyRNA *UNUSED(prop),
float *min, float *max, float *softmin, float *softmax)
{
const int offset_type = RNA_enum_get(ptr, "offset_type");
*min = -FLT_MAX;
*max = FLT_MAX;
*softmin = 0.0f;
*softmax = (offset_type == BEVEL_AMT_PERCENT) ? 100.0f : 1.0f;
}
void MESH_OT_bevel(wmOperatorType *ot)
{
PropertyRNA *prop;
static EnumPropertyItem offset_type_items[] = {
{BEVEL_AMT_OFFSET, "OFFSET", 0, "Offset", "Amount is offset of new edges from original"},
{BEVEL_AMT_WIDTH, "WIDTH", 0, "Width", "Amount is width of new face"},
{BEVEL_AMT_DEPTH, "DEPTH", 0, "Depth", "Amount is perpendicular distance from original edge to bevel face"},
{BEVEL_AMT_PERCENT, "PERCENT", 0, "Percent", "Amount is percent of adjacent edge length"},
{0, NULL, 0, NULL, NULL},
};
/* identifiers */
ot->name = "Bevel";
ot->description = "Edge Bevel";
ot->idname = "MESH_OT_bevel";
/* api callbacks */
ot->exec = edbm_bevel_exec;
ot->invoke = edbm_bevel_invoke;
ot->modal = edbm_bevel_modal;
ot->cancel = edbm_bevel_cancel;
ot->poll = ED_operator_editmesh;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO | OPTYPE_GRAB_POINTER | OPTYPE_BLOCKING;
RNA_def_enum(ot->srna, "offset_type", offset_type_items, 0, "Amount Type", "What distance Amount measures");
prop = RNA_def_float(ot->srna, "offset", 0.0f, -FLT_MAX, FLT_MAX, "Amount", "", 0.0f, 1.0f);
RNA_def_property_float_array_funcs_runtime(prop, NULL, NULL, mesh_ot_bevel_offset_range_func);
RNA_def_int(ot->srna, "segments", 1, 1, 50, "Segments", "Segments for curved edge", 1, 8);
RNA_def_float(ot->srna, "profile", 0.5f, 0.15f, 1.0f, "Profile", "Controls profile shape (0.5 = round)", 0.15f, 1.0f);
RNA_def_boolean(ot->srna, "vertex_only", false, "Vertex only", "Bevel only vertices");
}
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