diff options
Diffstat (limited to 'source/blender/gpencil_modifiers/intern/MOD_gpencillattice.c')
| -rw-r--r-- | source/blender/gpencil_modifiers/intern/MOD_gpencillattice.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencillattice.c b/source/blender/gpencil_modifiers/intern/MOD_gpencillattice.c new file mode 100644 index 00000000000..33bdb9c861d --- /dev/null +++ b/source/blender/gpencil_modifiers/intern/MOD_gpencillattice.c @@ -0,0 +1,213 @@ +/* + * ***** 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; + int vindex = defgroup_name_index(ob, mmd->vgname); + float weight = 1.0f; + + if (!is_stroke_affected_by_modifier(ob, + mmd->layername, mmd->pass_index, 3, gpl, gps, + mmd->flag & GP_LATTICE_INVERT_LAYER, mmd->flag & GP_LATTICE_INVERT_PASS)) + { + return; + } + + if (mmd->cache_data == NULL) { + return; + } + + for (int i = 0; i < gps->totpoints; i++) { + bGPDspoint *pt = &gps->points[i]; + MDeformVert *dvert = &gps->dvert[i]; + + /* verify vertex group */ + weight = get_modifier_point_weight(dvert, (int)((mmd->flag & GP_LATTICE_INVERT_VGROUP) != 0), vindex); + if (weight < 0) { + 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, + + /* initData */ initData, + /* freeData */ freeData, + /* isDisabled */ isDisabled, + /* updateDepsgraph */ updateDepsgraph, + /* dependsOnTime */ NULL, + /* foreachObjectLink */ foreachObjectLink, + /* foreachIDLink */ NULL, + /* foreachTexLink */ NULL, +}; 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