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/*
* 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) 2005 by the Blender Foundation.
* All rights reserved.
*/
/** \file
* \ingroup modifiers
*/
#include <string.h>
#include "BLI_utildefines.h"
#include "DNA_object_types.h"
#include "BKE_editmesh.h"
#include "BKE_lattice.h"
#include "BKE_lib_id.h"
#include "BKE_lib_query.h"
#include "BKE_mesh.h"
#include "BKE_modifier.h"
#include "DEG_depsgraph_query.h"
#include "MEM_guardedalloc.h"
#include "MOD_util.h"
static void initData(ModifierData *md)
{
LatticeModifierData *lmd = (LatticeModifierData *)md;
lmd->strength = 1.0f;
}
static void requiredDataMask(Object *UNUSED(ob),
ModifierData *md,
CustomData_MeshMasks *r_cddata_masks)
{
LatticeModifierData *lmd = (LatticeModifierData *)md;
/* ask for vertexgroups if we need them */
if (lmd->name[0] != '\0') {
r_cddata_masks->vmask |= CD_MASK_MDEFORMVERT;
}
}
static bool isDisabled(const struct Scene *UNUSED(scene),
ModifierData *md,
bool UNUSED(userRenderParams))
{
LatticeModifierData *lmd = (LatticeModifierData *)md;
/* The object type check is only needed here in case we have a placeholder
* object assigned (because the library containing the lattice is missing).
*
* In other cases it should be impossible to have a type mismatch.
*/
return !lmd->object || lmd->object->type != OB_LATTICE;
}
static void foreachObjectLink(ModifierData *md, Object *ob, ObjectWalkFunc walk, void *userData)
{
LatticeModifierData *lmd = (LatticeModifierData *)md;
walk(userData, ob, &lmd->object, IDWALK_CB_NOP);
}
static void updateDepsgraph(ModifierData *md, const ModifierUpdateDepsgraphContext *ctx)
{
LatticeModifierData *lmd = (LatticeModifierData *)md;
if (lmd->object != NULL) {
DEG_add_object_relation(ctx->node, lmd->object, DEG_OB_COMP_GEOMETRY, "Lattice Modifier");
DEG_add_object_relation(ctx->node, lmd->object, DEG_OB_COMP_TRANSFORM, "Lattice Modifier");
}
DEG_add_modifier_to_transform_relation(ctx->node, "Lattice Modifier");
}
static void deformVerts(ModifierData *md,
const ModifierEvalContext *ctx,
struct Mesh *mesh,
float (*vertexCos)[3],
int numVerts)
{
LatticeModifierData *lmd = (LatticeModifierData *)md;
struct Mesh *mesh_src = MOD_deform_mesh_eval_get(
ctx->object, NULL, mesh, NULL, numVerts, false, false);
MOD_previous_vcos_store(md, vertexCos); /* if next modifier needs original vertices */
lattice_deform_verts(lmd->object,
ctx->object,
mesh_src,
vertexCos,
numVerts,
lmd->flag,
lmd->name,
lmd->strength);
if (!ELEM(mesh_src, NULL, mesh)) {
BKE_id_free(NULL, mesh_src);
}
}
static void deformVertsEM(ModifierData *md,
const ModifierEvalContext *ctx,
struct BMEditMesh *em,
struct Mesh *mesh,
float (*vertexCos)[3],
int numVerts)
{
struct Mesh *mesh_src = MOD_deform_mesh_eval_get(
ctx->object, em, mesh, NULL, numVerts, false, false);
deformVerts(md, ctx, mesh_src, vertexCos, numVerts);
if (!ELEM(mesh_src, NULL, mesh)) {
BKE_id_free(NULL, mesh_src);
}
}
ModifierTypeInfo modifierType_Lattice = {
/* name */ "Lattice",
/* structName */ "LatticeModifierData",
/* structSize */ sizeof(LatticeModifierData),
/* type */ eModifierTypeType_OnlyDeform,
/* flags */ eModifierTypeFlag_AcceptsCVs | eModifierTypeFlag_AcceptsLattice |
eModifierTypeFlag_SupportsEditmode,
/* copyData */ modifier_copyData_generic,
/* deformVerts */ deformVerts,
/* deformMatrices */ NULL,
/* deformVertsEM */ deformVertsEM,
/* deformMatricesEM */ NULL,
/* applyModifier */ NULL,
/* initData */ initData,
/* requiredDataMask */ requiredDataMask,
/* freeData */ NULL,
/* isDisabled */ isDisabled,
/* updateDepsgraph */ updateDepsgraph,
/* dependsOnTime */ NULL,
/* dependsOnNormals */ NULL,
/* foreachObjectLink */ foreachObjectLink,
/* foreachIDLink */ NULL,
/* foreachTexLink */ NULL,
/* freeRuntimeData */ NULL,
};
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