Brecht Van Lommel
a168c3d282
Modifier stack evaluation would copy mesh settings other than mesh topology automatically, outside of the individual modifier evaluation. This leads to hard to understand code, and makes it unclear which settings are available in following modifiers, and which only after the entire stack is evaluated. Now every modifier is responsible to ensure the mesh it outputs preserves materials, texture space and other settings, or alters them as needed. Fixes T64739: incorrect texture space for various modifiers Differential Revision: https://developer.blender.org/D5808
136 lines
4.3 KiB
C
136 lines
4.3 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/** \file
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* \ingroup modifiers
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*/
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#include "BLI_utildefines.h"
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#include "DNA_mesh_types.h"
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#include "DNA_object_types.h"
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#include "BKE_deform.h"
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#include "BKE_mesh.h"
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#include "MOD_modifiertypes.h"
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#include "bmesh.h"
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#include "tools/bmesh_wireframe.h"
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static void initData(ModifierData *md)
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{
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WireframeModifierData *wmd = (WireframeModifierData *)md;
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wmd->offset = 0.02f;
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wmd->flag = MOD_WIREFRAME_REPLACE | MOD_WIREFRAME_OFS_EVEN;
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wmd->crease_weight = 1.0f;
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}
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static void requiredDataMask(Object *UNUSED(ob),
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ModifierData *md,
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CustomData_MeshMasks *r_cddata_masks)
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{
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WireframeModifierData *wmd = (WireframeModifierData *)md;
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/* ask for vertexgroups if we need them */
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if (wmd->defgrp_name[0] != '\0') {
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r_cddata_masks->vmask |= CD_MASK_MDEFORMVERT;
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}
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}
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static bool dependsOnNormals(ModifierData *UNUSED(md))
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{
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return true;
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}
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static Mesh *WireframeModifier_do(WireframeModifierData *wmd, Object *ob, Mesh *mesh)
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{
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Mesh *result;
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BMesh *bm;
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const int defgrp_index = defgroup_name_index(ob, wmd->defgrp_name);
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bm = BKE_mesh_to_bmesh_ex(mesh,
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&(struct BMeshCreateParams){0},
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&(struct BMeshFromMeshParams){
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.calc_face_normal = true,
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.add_key_index = false,
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.use_shapekey = false,
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.active_shapekey = 0,
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.cd_mask_extra = {.vmask = CD_MASK_ORIGINDEX,
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.emask = CD_MASK_ORIGINDEX,
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.pmask = CD_MASK_ORIGINDEX},
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});
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BM_mesh_wireframe(bm,
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wmd->offset,
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wmd->offset_fac,
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wmd->offset_fac_vg,
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(wmd->flag & MOD_WIREFRAME_REPLACE) != 0,
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(wmd->flag & MOD_WIREFRAME_BOUNDARY) != 0,
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(wmd->flag & MOD_WIREFRAME_OFS_EVEN) != 0,
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(wmd->flag & MOD_WIREFRAME_OFS_RELATIVE) != 0,
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(wmd->flag & MOD_WIREFRAME_CREASE) != 0,
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wmd->crease_weight,
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defgrp_index,
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(wmd->flag & MOD_WIREFRAME_INVERT_VGROUP) != 0,
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wmd->mat_ofs,
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MAX2(ob->totcol - 1, 0),
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false);
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result = BKE_mesh_from_bmesh_for_eval_nomain(bm, NULL, mesh);
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BM_mesh_free(bm);
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result->runtime.cd_dirty_vert |= CD_MASK_NORMAL;
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return result;
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}
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static Mesh *applyModifier(ModifierData *md,
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const struct ModifierEvalContext *ctx,
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struct Mesh *mesh)
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{
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return WireframeModifier_do((WireframeModifierData *)md, ctx->object, mesh);
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}
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ModifierTypeInfo modifierType_Wireframe = {
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/* name */ "Wireframe",
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/* structName */ "WireframeModifierData",
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/* structSize */ sizeof(WireframeModifierData),
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/* type */ eModifierTypeType_Constructive,
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/* flags */ eModifierTypeFlag_AcceptsMesh | eModifierTypeFlag_SupportsEditmode,
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/* copyData */ modifier_copyData_generic,
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/* deformVerts */ NULL,
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/* deformMatrices */ NULL,
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/* deformVertsEM */ NULL,
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/* deformMatricesEM */ NULL,
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/* applyModifier */ applyModifier,
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/* initData */ initData,
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/* requiredDataMask */ requiredDataMask,
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/* freeData */ NULL,
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/* isDisabled */ NULL,
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/* updateDepgraph */ NULL,
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/* dependsOnTime */ NULL,
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/* dependsOnNormals */ dependsOnNormals,
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/* foreachObjectLink */ NULL,
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/* foreachIDLink */ NULL,
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/* foreachTexLink */ NULL,
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/* freeRuntimeData */ NULL,
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};
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