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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2013 Blender Foundation. All rights reserved. */
/** \file
* \ingroup edmesh
*/
#include "DNA_curve_types.h"
#include "DNA_object_types.h"
#include "BLI_linklist.h"
#include "BLI_listbase.h"
#include "BLI_math.h"
#include "BKE_context.h"
#include "BKE_curve.h"
#include "BKE_customdata.h"
#include "BKE_editmesh.h"
#include "BKE_layer.h"
#include "BKE_lib_id.h"
#include "BKE_mesh.h"
#include "BKE_mesh_runtime.h"
#include "BKE_object.h"
#include "BKE_report.h"
#include "DEG_depsgraph.h"
#include "DEG_depsgraph_query.h"
#include "RNA_access.h"
#include "RNA_define.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" /* own include */
static LinkNode *knifeproject_poly_from_object(const bContext *C,
Scene *scene,
Object *ob,
LinkNode *polys)
{
Depsgraph *depsgraph = CTX_data_ensure_evaluated_depsgraph(C);
ARegion *region = CTX_wm_region(C);
const struct Mesh *me_eval;
bool me_eval_needs_free;
if (ob->type == OB_MESH || ob->runtime.data_eval) {
Object *ob_eval = DEG_get_evaluated_object(depsgraph, ob);
me_eval = BKE_object_get_evaluated_mesh(ob_eval);
if (me_eval == NULL) {
Scene *scene_eval = (Scene *)DEG_get_evaluated_id(depsgraph, &scene->id);
me_eval = mesh_get_eval_final(depsgraph, scene_eval, ob_eval, &CD_MASK_BAREMESH);
}
me_eval_needs_free = false;
}
else if (ELEM(ob->type, OB_FONT, OB_CURVES_LEGACY, OB_SURF)) {
Object *ob_eval = DEG_get_evaluated_object(depsgraph, ob);
me_eval = BKE_mesh_new_nomain_from_curve(ob_eval);
me_eval_needs_free = true;
}
else {
me_eval = NULL;
}
if (me_eval) {
ListBase nurbslist = {NULL, NULL};
float projmat[4][4];
BKE_mesh_to_curve_nurblist(me_eval, &nurbslist, 0); /* wire */
BKE_mesh_to_curve_nurblist(me_eval, &nurbslist, 1); /* boundary */
ED_view3d_ob_project_mat_get(region->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_v2_m4(region, 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 (me_eval_needs_free) {
BKE_id_free(NULL, (ID *)me_eval);
}
}
return polys;
}
static int knifeproject_exec(bContext *C, wmOperator *op)
{
Scene *scene = CTX_data_scene(C);
const bool cut_through = RNA_boolean_get(op->ptr, "cut_through");
LinkNode *polys = NULL;
CTX_DATA_BEGIN (C, Object *, ob, selected_objects) {
if (BKE_object_is_in_editmode(ob)) {
continue;
}
polys = knifeproject_poly_from_object(C, scene, ob, polys);
}
CTX_DATA_END;
if (polys == NULL) {
BKE_report(op->reports,
RPT_ERROR,
"No other selected objects have wire or boundary edges to use for projection");
return OPERATOR_CANCELLED;
}
ViewContext vc;
em_setup_viewcontext(C, &vc);
uint objects_len;
Object **objects = BKE_view_layer_array_from_objects_in_edit_mode_unique_data(
vc.scene, vc.view_layer, vc.v3d, &objects_len);
EDBM_mesh_knife(&vc, objects, objects_len, polys, true, cut_through);
for (uint ob_index = 0; ob_index < objects_len; ob_index++) {
Object *obedit = objects[ob_index];
ED_view3d_viewcontext_init_object(&vc, obedit);
BMEditMesh *em = BKE_editmesh_from_object(obedit);
/* select only tagged faces */
BM_mesh_elem_hflag_disable_all(em->bm, BM_VERT | BM_EDGE | BM_FACE, BM_ELEM_SELECT, false);
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, false, BM_ELEM_TAG);
BM_mesh_select_mode_flush(em->bm);
}
MEM_freeN(objects);
BLI_linklist_freeN(polys);
return OPERATOR_FINISHED;
}
void MESH_OT_knife_project(wmOperatorType *ot)
{
/* description */
ot->name = "Knife Project";
ot->idname = "MESH_OT_knife_project";
ot->description = "Use other objects outlines and boundaries to project knife cuts";
/* callbacks */
ot->exec = knifeproject_exec;
ot->poll = ED_operator_editmesh_region_view3d;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO | OPTYPE_BLOCKING;
/* parameters */
RNA_def_boolean(ot->srna,
"cut_through",
false,
"Cut Through",
"Cut through all faces, not just visible ones");
}
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