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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) 2017, Blender Foundation
* This is a new part of Blender
*
* Contributor(s): Antonio Vazquez
*
* ***** END GPL LICENSE BLOCK *****
*
*/
/** \file blender/gpencil_modifiers/intern/MOD_gpencillattice.c
* \ingroup modifiers
*/
#include <stdio.h>
#include "DNA_meshdata_types.h"
#include "DNA_scene_types.h"
#include "DNA_object_types.h"
#include "DNA_gpencil_types.h"
#include "DNA_gpencil_modifier_types.h"
#include "BLI_utildefines.h"
#include "BKE_context.h"
#include "BKE_deform.h"
#include "BKE_gpencil.h"
#include "BKE_gpencil_modifier.h"
#include "BKE_modifier.h"
#include "BKE_lattice.h"
#include "BKE_library_query.h"
#include "BKE_scene.h"
#include "BKE_main.h"
#include "BKE_layer.h"
#include "MEM_guardedalloc.h"
#include "MOD_gpencil_util.h"
#include "MOD_gpencil_modifiertypes.h"
#include "DEG_depsgraph.h"
#include "DEG_depsgraph_build.h"
#include "DEG_depsgraph_query.h"
static void initData(GpencilModifierData *md)
{
LatticeGpencilModifierData *gpmd = (LatticeGpencilModifierData *)md;
gpmd->pass_index = 0;
gpmd->layername[0] = '\0';
gpmd->vgname[0] = '\0';
gpmd->object = NULL;
gpmd->cache_data = NULL;
gpmd->strength = 1.0f;
}
static void copyData(const GpencilModifierData *md, GpencilModifierData *target)
{
BKE_gpencil_modifier_copyData_generic(md, target);
}
static void deformStroke(
GpencilModifierData *md, Depsgraph *UNUSED(depsgraph),
Object *ob, bGPDlayer *gpl, bGPDstroke *gps)
{
LatticeGpencilModifierData *mmd = (LatticeGpencilModifierData *)md;
const int def_nr = defgroup_name_index(ob, mmd->vgname);
if (!is_stroke_affected_by_modifier(
ob,
mmd->layername, mmd->pass_index, mmd->layer_pass, 3, gpl, gps,
mmd->flag & GP_LATTICE_INVERT_LAYER, mmd->flag & GP_LATTICE_INVERT_PASS,
mmd->flag & GP_LATTICE_INVERT_LAYERPASS))
{
return;
}
if (mmd->cache_data == NULL) {
return;
}
for (int i = 0; i < gps->totpoints; i++) {
bGPDspoint *pt = &gps->points[i];
MDeformVert *dvert = gps->dvert != NULL ? &gps->dvert[i] : NULL;
/* verify vertex group */
const float weight = get_modifier_point_weight(dvert, (mmd->flag & GP_LATTICE_INVERT_VGROUP) != 0, def_nr);
if (weight < 0.0f) {
continue;
}
calc_latt_deform((struct LatticeDeformData *)mmd->cache_data, &pt->x, mmd->strength * weight);
}
}
/* FIXME: Ideally we be doing this on a copy of the main depsgraph
* (i.e. one where we don't have to worry about restoring state)
*/
static void bakeModifier(
Main *bmain, Depsgraph *depsgraph,
GpencilModifierData *md, Object *ob)
{
LatticeGpencilModifierData *mmd = (LatticeGpencilModifierData *)md;
Scene *scene = DEG_get_evaluated_scene(depsgraph);
struct LatticeDeformData *ldata = NULL;
bGPdata *gpd = ob->data;
int oldframe = (int)DEG_get_ctime(depsgraph);
if (mmd->object == NULL)
return;
for (bGPDlayer *gpl = gpd->layers.first; gpl; gpl = gpl->next) {
for (bGPDframe *gpf = gpl->frames.first; gpf; gpf = gpf->next) {
/* apply lattice effects on this frame
* NOTE: this assumes that we don't want lattice animation on non-keyframed frames
*/
CFRA = gpf->framenum;
BKE_scene_graph_update_for_newframe(depsgraph, bmain);
/* recalculate lattice data */
BKE_gpencil_lattice_init(ob);
/* compute lattice effects on this frame */
for (bGPDstroke *gps = gpf->strokes.first; gps; gps = gps->next) {
deformStroke(md, depsgraph, ob, gpl, gps);
}
}
}
/* free lingering data */
ldata = (struct LatticeDeformData *)mmd->cache_data;
if (ldata) {
end_latt_deform(ldata);
mmd->cache_data = NULL;
}
/* return frame state and DB to original state */
CFRA = oldframe;
BKE_scene_graph_update_for_newframe(depsgraph, bmain);
}
static void freeData(GpencilModifierData *md)
{
LatticeGpencilModifierData *mmd = (LatticeGpencilModifierData *)md;
struct LatticeDeformData *ldata = (struct LatticeDeformData *)mmd->cache_data;
/* free deform data */
if (ldata) {
end_latt_deform(ldata);
}
}
static bool isDisabled(GpencilModifierData *md, int UNUSED(userRenderParams))
{
LatticeGpencilModifierData *mmd = (LatticeGpencilModifierData *)md;
return !mmd->object;
}
static void updateDepsgraph(GpencilModifierData *md, const ModifierUpdateDepsgraphContext *ctx)
{
LatticeGpencilModifierData *lmd = (LatticeGpencilModifierData *)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_object_relation(ctx->node, ctx->object, DEG_OB_COMP_TRANSFORM, "Lattice Modifier");
}
static void foreachObjectLink(
GpencilModifierData *md, Object *ob,
ObjectWalkFunc walk, void *userData)
{
LatticeGpencilModifierData *mmd = (LatticeGpencilModifierData *)md;
walk(userData, ob, &mmd->object, IDWALK_CB_NOP);
}
GpencilModifierTypeInfo modifierType_Gpencil_Lattice = {
/* name */ "Lattice",
/* structName */ "LatticeGpencilModifierData",
/* structSize */ sizeof(LatticeGpencilModifierData),
/* type */ eGpencilModifierTypeType_Gpencil,
/* flags */ eGpencilModifierTypeFlag_Single | eGpencilModifierTypeFlag_SupportsEditmode,
/* copyData */ copyData,
/* deformStroke */ deformStroke,
/* generateStrokes */ NULL,
/* bakeModifier */ bakeModifier,
/* remapTime */ NULL,
/* initData */ initData,
/* freeData */ freeData,
/* isDisabled */ isDisabled,
/* updateDepsgraph */ updateDepsgraph,
/* dependsOnTime */ NULL,
/* foreachObjectLink */ foreachObjectLink,
/* foreachIDLink */ NULL,
/* foreachTexLink */ NULL,
};
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