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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) 2007 Blender Foundation.
* All rights reserved.
*
*
* Contributor(s): Campbell Barton
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/editors/mesh/editmesh_knife_project.c
* \ingroup edmesh
*/
#include "DNA_curve_types.h"
#include "DNA_scene_types.h"
#include "DNA_object_types.h"
#include "DNA_screen_types.h"
#include "DNA_windowmanager_types.h"
#include "BLI_utildefines.h"
#include "BLI_math.h"
#include "BLI_linklist.h"
#include "BLI_listbase.h"
#include "BKE_library.h"
#include "BKE_mesh.h"
#include "BKE_context.h"
#include "BKE_curve.h"
#include "BKE_cdderivedmesh.h"
#include "BKE_tessmesh.h"
#include "BKE_report.h"
#include "MEM_guardedalloc.h"
#include "WM_types.h"
#include "ED_mesh.h"
#include "ED_screen.h"
#include "ED_view3d.h"
#include "mesh_intern.h"
static LinkNode *knifeproject_poly_from_object(ARegion *ar, Scene *scene, Object *ob, LinkNode *polys)
{
DerivedMesh *dm;
bool dm_needsFree;
if (ob->type == OB_MESH || ob->derivedFinal) {
dm = ob->derivedFinal ? ob->derivedFinal : mesh_get_derived_final(scene, ob, CD_MASK_BAREMESH);
dm_needsFree = false;
}
else if (ELEM3(ob->type, OB_FONT, OB_CURVE, OB_SURF)) {
dm = CDDM_from_curve(ob);
dm_needsFree = true;
}
else {
dm = NULL;
}
if (dm) {
ListBase nurbslist = {NULL, NULL};
float projmat[4][4];
BKE_mesh_to_curve_nurblist(dm, &nurbslist, 0); /* wire */
BKE_mesh_to_curve_nurblist(dm, &nurbslist, 1); /* boundary */
ED_view3d_ob_project_mat_get(ar->regiondata, ob, projmat);
if (nurbslist.first) {
Nurb *nu;
for (nu = nurbslist.first; nu; nu = nu->next) {
if (nu->bp) {
int a;
BPoint *bp;
bool is_cyclic = (nu->flagu & CU_NURB_CYCLIC) != 0;
float (*mval)[2] = MEM_mallocN(sizeof(*mval) * (nu->pntsu + is_cyclic), __func__);
for (bp = nu->bp, a = 0; a < nu->pntsu; a++, bp++) {
ED_view3d_project_float_v3_m4(ar, bp->vec, mval[a], projmat);
}
if (is_cyclic) {
copy_v2_v2(mval[a], mval[0]);
}
BLI_linklist_prepend(&polys, mval);
}
}
}
BKE_nurbList_free(&nurbslist);
if (dm_needsFree) {
dm->release(dm);
}
}
return polys;
}
static int knifeproject_exec(bContext *C, wmOperator *op)
{
ARegion *ar = CTX_wm_region(C);
Scene *scene = CTX_data_scene(C);
Object *obedit = CTX_data_edit_object(C);
BMEditMesh *em = BMEdit_FromObject(obedit);
LinkNode *polys = NULL;
CTX_DATA_BEGIN (C, Object *, ob, selected_objects)
{
if (ob != obedit) {
polys = knifeproject_poly_from_object(ar, scene, ob, polys);
}
}
CTX_DATA_END;
if (polys) {
EDBM_mesh_knife(C, polys, true);
/* select only tagged faces */
BM_mesh_elem_hflag_disable_all(em->bm, BM_VERT | BM_EDGE | BM_FACE, BM_ELEM_SELECT, false);
/* note essential, but switch out of vertex mode since the
* selected regions wont be nicely isolated after flushing.
* note: call after de-select to avoid selection flushing */
EDBM_selectmode_disable(scene, em, SCE_SELECT_VERTEX, SCE_SELECT_EDGE);
BM_mesh_elem_hflag_enable_test(em->bm, BM_FACE, BM_ELEM_SELECT, true, BM_ELEM_TAG);
BM_mesh_select_mode_flush(em->bm);
BLI_linklist_freeN(polys);
return OPERATOR_FINISHED;
}
else {
BKE_report(op->reports, RPT_ERROR, "No other selected objects found to use for projection");
return OPERATOR_CANCELLED;
}
}
void MESH_OT_knife_project(wmOperatorType *ot)
{
/* description */
ot->name = "Knife Project";
ot->idname = "MESH_OT_knife_project";
ot->description = "Use other objects outlines & boundaries to project knife cuts";
/* callbacks */
ot->exec = knifeproject_exec;
ot->poll = ED_operator_editmesh_view3d;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO | OPTYPE_BLOCKING;
}
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