diff options
Diffstat (limited to 'source/blender/gpencil_modifiers/intern/MOD_gpencilsubdiv.c')
| -rw-r--r-- | source/blender/gpencil_modifiers/intern/MOD_gpencilsubdiv.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilsubdiv.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilsubdiv.c new file mode 100644 index 00000000000..dba3e028904 --- /dev/null +++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilsubdiv.c @@ -0,0 +1,193 @@ +/* + * ***** 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_gpencilsubdiv.c + * \ingroup modifiers + */ + +#include <stdio.h> + +#include "MEM_guardedalloc.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_math.h" +#include "BLI_utildefines.h" + +#include "BKE_context.h" +#include "BKE_gpencil.h" +#include "BKE_gpencil_modifier.h" + +#include "DEG_depsgraph.h" + +#include "MOD_gpencil_util.h" +#include "MOD_gpencil_modifiertypes.h" + +static void initData(GpencilModifierData *md) +{ + SubdivGpencilModifierData *gpmd = (SubdivGpencilModifierData *)md; + gpmd->pass_index = 0; + gpmd->level = 1; + gpmd->layername[0] = '\0'; +} + +static void copyData(const GpencilModifierData *md, GpencilModifierData *target) +{ + BKE_gpencil_modifier_copyData_generic(md, target); +} + +/* subdivide stroke to get more control points */ +static void deformStroke( + GpencilModifierData *md, Depsgraph *UNUSED(depsgraph), + Object *ob, bGPDlayer *gpl, bGPDstroke *gps) +{ + SubdivGpencilModifierData *mmd = (SubdivGpencilModifierData *)md; + bGPDspoint *temp_points; + int totnewpoints, oldtotpoints; + int i2; + + if (!is_stroke_affected_by_modifier(ob, + mmd->layername, mmd->pass_index, 3, gpl, gps, + mmd->flag & GP_SUBDIV_INVERT_LAYER, mmd->flag & GP_SUBDIV_INVERT_PASS)) + { + return; + } + + /* loop as many times as levels */ + for (int s = 0; s < mmd->level; s++) { + totnewpoints = gps->totpoints - 1; + /* duplicate points in a temp area */ + temp_points = MEM_dupallocN(gps->points); + oldtotpoints = gps->totpoints; + + /* resize the points arrys */ + gps->totpoints += totnewpoints; + gps->points = MEM_recallocN(gps->points, sizeof(*gps->points) * gps->totpoints); + gps->dvert = MEM_recallocN(gps->dvert, sizeof(*gps->dvert) * gps->totpoints); + gps->flag |= GP_STROKE_RECALC_CACHES; + + /* move points from last to first to new place */ + i2 = gps->totpoints - 1; + for (int i = oldtotpoints - 1; i > 0; i--) { + bGPDspoint *pt = &temp_points[i]; + bGPDspoint *pt_final = &gps->points[i2]; + + MDeformVert *dvert = &gps->dvert[i]; + MDeformVert *dvert_final = &gps->dvert[i2]; + + copy_v3_v3(&pt_final->x, &pt->x); + pt_final->pressure = pt->pressure; + pt_final->strength = pt->strength; + pt_final->time = pt->time; + pt_final->flag = pt->flag; + + dvert_final->totweight = dvert->totweight; + dvert_final->dw = dvert->dw; + i2 -= 2; + } + /* interpolate mid points */ + i2 = 1; + for (int i = 0; i < oldtotpoints - 1; i++) { + bGPDspoint *pt = &temp_points[i]; + bGPDspoint *next = &temp_points[i + 1]; + bGPDspoint *pt_final = &gps->points[i2]; + MDeformVert *dvert_final = &gps->dvert[i2]; + + /* add a half way point */ + interp_v3_v3v3(&pt_final->x, &pt->x, &next->x, 0.5f); + pt_final->pressure = interpf(pt->pressure, next->pressure, 0.5f); + pt_final->strength = interpf(pt->strength, next->strength, 0.5f); + CLAMP(pt_final->strength, GPENCIL_STRENGTH_MIN, 1.0f); + pt_final->time = interpf(pt->time, next->time, 0.5f); + + dvert_final->totweight = 0; + dvert_final->dw = NULL; + i2 += 2; + } + + MEM_SAFE_FREE(temp_points); + + /* move points to smooth stroke (not simple flag )*/ + if ((mmd->flag & GP_SUBDIV_SIMPLE) == 0) { + /* duplicate points in a temp area with the new subdivide data */ + temp_points = MEM_dupallocN(gps->points); + + /* extreme points are not changed */ + for (int i = 0; i < gps->totpoints - 2; i++) { + bGPDspoint *pt = &temp_points[i]; + bGPDspoint *next = &temp_points[i + 1]; + bGPDspoint *pt_final = &gps->points[i + 1]; + + /* move point */ + interp_v3_v3v3(&pt_final->x, &pt->x, &next->x, 0.5f); + } + /* free temp memory */ + MEM_SAFE_FREE(temp_points); + } + } +} + +static void bakeModifier( + struct Main *UNUSED(bmain), Depsgraph *depsgraph, + GpencilModifierData *md, Object *ob) +{ + bGPdata *gpd = ob->data; + + for (bGPDlayer *gpl = gpd->layers.first; gpl; gpl = gpl->next) { + for (bGPDframe *gpf = gpl->frames.first; gpf; gpf = gpf->next) { + for (bGPDstroke *gps = gpf->strokes.first; gps; gps = gps->next) { + deformStroke(md, depsgraph, ob, gpl, gps); + } + } + } +} + +GpencilModifierTypeInfo modifierType_Gpencil_Subdiv = { + /* name */ "Subdivision", + /* structName */ "SubdivGpencilModifierData", + /* structSize */ sizeof(SubdivGpencilModifierData), + /* type */ eGpencilModifierTypeType_Gpencil, + /* flags */ eGpencilModifierTypeFlag_SupportsEditmode, + + /* copyData */ copyData, + + /* deformStroke */ deformStroke, + /* generateStrokes */ NULL, + /* bakeModifier */ bakeModifier, + + /* initData */ initData, + /* freeData */ NULL, + /* isDisabled */ NULL, + /* updateDepsgraph */ NULL, + /* dependsOnTime */ NULL, + /* foreachObjectLink */ NULL, + /* foreachIDLink */ NULL, + /* foreachTexLink */ NULL, +}; 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