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/* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup modifiers
*/
#include <string.h>
#include "MEM_guardedalloc.h"
#include "BLI_utildefines.h"
#include "BLT_translation.h"
#include "DNA_defaults.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_object_types.h"
#include "DNA_screen_types.h"
#include "BKE_context.h"
#include "BKE_mesh.h"
#include "BKE_modifier.h"
#include "BKE_screen.h"
#include "UI_interface.h"
#include "UI_resources.h"
#include "RNA_access.h"
#include "RNA_prototypes.h"
#include "bmesh.h"
#include "bmesh_tools.h"
#include "MOD_modifiertypes.h"
#include "MOD_ui_common.h"
static Mesh *triangulate_mesh(Mesh *mesh,
const int quad_method,
const int ngon_method,
const int min_vertices,
const int flag)
{
Mesh *result;
BMesh *bm;
int edges_num, i;
MEdge *me;
CustomData_MeshMasks cd_mask_extra = {
.vmask = CD_MASK_ORIGINDEX, .emask = CD_MASK_ORIGINDEX, .pmask = CD_MASK_ORIGINDEX};
bool keep_clnors = (flag & MOD_TRIANGULATE_KEEP_CUSTOMLOOP_NORMALS) != 0;
if (keep_clnors) {
BKE_mesh_calc_normals_split(mesh);
/* We need that one to 'survive' to/from BMesh conversions. */
CustomData_clear_layer_flag(&mesh->ldata, CD_NORMAL, CD_FLAG_TEMPORARY);
cd_mask_extra.lmask |= CD_MASK_NORMAL;
}
bm = BKE_mesh_to_bmesh_ex(mesh,
&((struct BMeshCreateParams){0}),
&((struct BMeshFromMeshParams){
.calc_face_normal = true,
.calc_vert_normal = false,
.cd_mask_extra = cd_mask_extra,
}));
BM_mesh_triangulate(bm, quad_method, ngon_method, min_vertices, false, NULL, NULL, NULL);
result = BKE_mesh_from_bmesh_for_eval_nomain(bm, &cd_mask_extra, mesh);
BM_mesh_free(bm);
if (keep_clnors) {
float(*lnors)[3] = CustomData_get_layer(&result->ldata, CD_NORMAL);
BLI_assert(lnors != NULL);
BKE_mesh_set_custom_normals(result, lnors);
/* Do some cleanup, we do not want those temp data to stay around. */
CustomData_set_layer_flag(&mesh->ldata, CD_NORMAL, CD_FLAG_TEMPORARY);
CustomData_set_layer_flag(&result->ldata, CD_NORMAL, CD_FLAG_TEMPORARY);
}
edges_num = result->totedge;
me = BKE_mesh_edges_for_write(result);
/* force drawing of all edges (seems to be omitted in CDDM_from_bmesh) */
for (i = 0; i < edges_num; i++, me++) {
me->flag |= ME_EDGEDRAW | ME_EDGERENDER;
}
return result;
}
static void initData(ModifierData *md)
{
TriangulateModifierData *tmd = (TriangulateModifierData *)md;
BLI_assert(MEMCMP_STRUCT_AFTER_IS_ZERO(tmd, modifier));
MEMCPY_STRUCT_AFTER(tmd, DNA_struct_default_get(TriangulateModifierData), modifier);
/* Enable in editmode by default */
md->mode |= eModifierMode_Editmode;
}
static Mesh *modifyMesh(ModifierData *md, const ModifierEvalContext *UNUSED(ctx), Mesh *mesh)
{
TriangulateModifierData *tmd = (TriangulateModifierData *)md;
Mesh *result;
if (!(result = triangulate_mesh(
mesh, tmd->quad_method, tmd->ngon_method, tmd->min_vertices, tmd->flag))) {
return mesh;
}
return result;
}
static void panel_draw(const bContext *UNUSED(C), Panel *panel)
{
uiLayout *layout = panel->layout;
PointerRNA ob_ptr;
PointerRNA *ptr = modifier_panel_get_property_pointers(panel, &ob_ptr);
uiLayoutSetPropSep(layout, true);
uiItemR(layout, ptr, "quad_method", 0, NULL, ICON_NONE);
uiItemR(layout, ptr, "ngon_method", 0, NULL, ICON_NONE);
uiItemR(layout, ptr, "min_vertices", 0, NULL, ICON_NONE);
uiItemR(layout, ptr, "keep_custom_normals", 0, NULL, ICON_NONE);
modifier_panel_end(layout, ptr);
}
static void panelRegister(ARegionType *region_type)
{
modifier_panel_register(region_type, eModifierType_Triangulate, panel_draw);
}
ModifierTypeInfo modifierType_Triangulate = {
/* name */ N_("Triangulate"),
/* structName */ "TriangulateModifierData",
/* structSize */ sizeof(TriangulateModifierData),
/* srna */ &RNA_TriangulateModifier,
/* type */ eModifierTypeType_Constructive,
/* flags */ eModifierTypeFlag_AcceptsMesh | eModifierTypeFlag_SupportsEditmode |
eModifierTypeFlag_SupportsMapping | eModifierTypeFlag_EnableInEditmode |
eModifierTypeFlag_AcceptsCVs,
/* icon */ ICON_MOD_TRIANGULATE,
/* copyData */ BKE_modifier_copydata_generic,
/* deformVerts */ NULL,
/* deformMatrices */ NULL,
/* deformVertsEM */ NULL,
/* deformMatricesEM */ NULL,
/* modifyMesh */ modifyMesh,
/* modifyGeometrySet */ NULL,
/* initData */ initData,
/* requiredDataMask */ NULL, // requiredDataMask,
/* freeData */ NULL,
/* isDisabled */ NULL,
/* updateDepsgraph */ NULL,
/* dependsOnTime */ NULL,
/* dependsOnNormals */ NULL,
/* foreachIDLink */ NULL,
/* foreachTexLink */ NULL,
/* freeRuntimeData */ NULL,
/* panelRegister */ panelRegister,
/* blendWrite */ NULL,
/* blendRead */ NULL,
};
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