diff options
Diffstat (limited to 'source/blender/gpencil_modifiers/intern/MOD_gpencilarray.c')
| -rw-r--r-- | source/blender/gpencil_modifiers/intern/MOD_gpencilarray.c | 344 |
1 files changed, 344 insertions, 0 deletions
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilarray.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilarray.c new file mode 100644 index 00000000000..b188dd0de0b --- /dev/null +++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilarray.c @@ -0,0 +1,344 @@ +/* + * ***** 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, Joshua Leung + * + * ***** END GPL LICENSE BLOCK ***** + * + */ + +/** \file blender/gpencil_modifiers/intern/MOD_gpencilinstance.c + * \ingroup modifiers + */ + +#include <stdio.h> + +#include "MEM_guardedalloc.h" + +#include "DNA_scene_types.h" +#include "DNA_object_types.h" +#include "DNA_gpencil_types.h" +#include "DNA_gpencil_modifier_types.h" + +#include "BLI_blenlib.h" +#include "BLI_rand.h" +#include "BLI_math.h" +#include "BLI_utildefines.h" + +#include "BKE_gpencil.h" +#include "BKE_gpencil_modifier.h" +#include "BKE_modifier.h" +#include "BKE_context.h" +#include "BKE_global.h" +#include "BKE_object.h" +#include "BKE_main.h" +#include "BKE_scene.h" +#include "BKE_layer.h" +#include "BKE_library_query.h" +#include "BKE_collection.h" + +#include "DEG_depsgraph.h" +#include "DEG_depsgraph_build.h" +#include "DEG_depsgraph_query.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) +{ + ArrayGpencilModifierData *gpmd = (ArrayGpencilModifierData *)md; + gpmd->count = 2; + gpmd->offset[0] = 1.0f; + gpmd->offset[1] = 0.0f; + gpmd->offset[2] = 0.0f; + gpmd->shift[0] = 0.0f; + gpmd->shift[1] = 0.0f; + gpmd->shift[2] = 0.0f; + gpmd->scale[0] = 1.0f; + gpmd->scale[1] = 1.0f; + gpmd->scale[2] = 1.0f; + gpmd->rnd_rot = 0.5f; + gpmd->rnd_size = 0.5f; + gpmd->object = NULL; + + /* fill random values */ + BLI_array_frand(gpmd->rnd, 20, 1); + gpmd->rnd[0] = 1; +} + +static void copyData(const GpencilModifierData *md, GpencilModifierData *target) +{ + BKE_gpencil_modifier_copyData_generic(md, target); +} + +/* -------------------------------- */ +/* helper function for per-instance positioning */ +static void BKE_gpencil_instance_modifier_instance_tfm( + Object *ob, ArrayGpencilModifierData *mmd, const int elem_idx, + float r_mat[4][4], float r_offset[4][4]) +{ + float offset[3], rot[3], scale[3]; + int ri = mmd->rnd[0]; + float factor; + + offset[0] = mmd->offset[0] * elem_idx; + offset[1] = mmd->offset[1] * elem_idx; + offset[2] = mmd->offset[2] * elem_idx; + + /* rotation */ + if (mmd->flag & GP_ARRAY_RANDOM_ROT) { + factor = mmd->rnd_rot * mmd->rnd[ri]; + mul_v3_v3fl(rot, mmd->rot, factor); + add_v3_v3(rot, mmd->rot); + } + else { + copy_v3_v3(rot, mmd->rot); + } + + /* scale */ + if (mmd->flag & GP_ARRAY_RANDOM_SIZE) { + factor = mmd->rnd_size * mmd->rnd[ri]; + mul_v3_v3fl(scale, mmd->scale, factor); + add_v3_v3(scale, mmd->scale); + } + else { + copy_v3_v3(scale, mmd->scale); + } + + /* advance random index */ + mmd->rnd[0]++; + if (mmd->rnd[0] > 19) { + mmd->rnd[0] = 1; + } + + /* calculate matrix */ + loc_eul_size_to_mat4(r_mat, offset, rot, scale); + + copy_m4_m4(r_offset, r_mat); + + /* offset object */ + if (mmd->object) { + float mat_offset[4][4]; + float obinv[4][4]; + + unit_m4(mat_offset); + add_v3_v3(mat_offset[3], mmd->offset); + invert_m4_m4(obinv, ob->obmat); + + mul_m4_series(r_offset, mat_offset, + obinv, mmd->object->obmat); + copy_m4_m4(mat_offset, r_offset); + + /* clear r_mat locations to avoid double transform */ + zero_v3(r_mat[3]); + } +} + +/* array modifier - generate geometry callback (for viewport/rendering) */ +static void generate_geometry( + GpencilModifierData *md, Depsgraph *UNUSED(depsgraph), + Object *ob, bGPDlayer *gpl, bGPDframe *gpf) +{ + ArrayGpencilModifierData *mmd = (ArrayGpencilModifierData *)md; + ListBase stroke_cache = {NULL, NULL}; + bGPDstroke *gps; + int idx; + + /* Check which strokes we can use once, and store those results in an array + * for quicker checking of what's valid (since string comparisons are expensive) + */ + const int num_strokes = BLI_listbase_count(&gpf->strokes); + int num_valid = 0; + + bool *valid_strokes = MEM_callocN(sizeof(bool) * num_strokes, __func__); + + for (gps = gpf->strokes.first, idx = 0; gps; gps = gps->next, idx++) { + /* Record whether this stroke can be used + * ATTENTION: The logic here is the inverse of what's used everywhere else! + */ + if (is_stroke_affected_by_modifier(ob, + mmd->layername, mmd->pass_index, mmd->layer_pass, 1, gpl, gps, + mmd->flag & GP_ARRAY_INVERT_LAYER, mmd->flag & GP_ARRAY_INVERT_PASS, + mmd->flag & GP_ARRAY_INVERT_LAYERPASS)) + { + valid_strokes[idx] = true; + num_valid++; + } + } + + /* Early exit if no strokes can be copied */ + if (num_valid == 0) { + if (G.debug & G_DEBUG) { + printf("GP Array Mod - No strokes to be included\n"); + } + + MEM_SAFE_FREE(valid_strokes); + return; + } + + + /* Generate new instances of all existing strokes, + * keeping each instance together so they maintain + * the correct ordering relative to each other + */ + float current_offset[4][4]; + unit_m4(current_offset); + + for (int x = 0; x < mmd->count; x++) { + /* original strokes are at index = 0 */ + if (x == 0) { + continue; + } + + /* Compute transforms for this instance */ + float mat[4][4]; + float mat_offset[4][4]; + BKE_gpencil_instance_modifier_instance_tfm(ob, mmd, x, mat, mat_offset); + + if (mmd->object) { + /* recalculate cumulative offset here */ + mul_m4_m4m4(current_offset, current_offset, mat_offset); + } + else { + copy_m4_m4(current_offset, mat); + } + /* apply shift */ + madd_v3_v3fl(current_offset[3], mmd->shift, x); + + /* Duplicate original strokes to create this instance */ + for (gps = gpf->strokes.first, idx = 0; gps; gps = gps->next, idx++) { + /* check if stroke can be duplicated */ + if (valid_strokes[idx]) { + /* Duplicate stroke */ + bGPDstroke *gps_dst = MEM_dupallocN(gps); + gps_dst->points = MEM_dupallocN(gps->points); + if (gps->dvert) { + gps_dst->dvert = MEM_dupallocN(gps->dvert); + BKE_gpencil_stroke_weights_duplicate(gps, gps_dst); + } + gps_dst->triangles = MEM_dupallocN(gps->triangles); + + /* Move points */ + for (int i = 0; i < gps->totpoints; i++) { + bGPDspoint *pt = &gps_dst->points[i]; + if (mmd->object) { + /* apply local changes (rot/scale) */ + mul_m4_v3(mat, &pt->x); + } + /* global changes */ + mul_m4_v3(current_offset, &pt->x); + } + + /* if replace material, use new one */ + if ((mmd->mat_rpl > 0) && (mmd->mat_rpl <= ob->totcol)) { + gps_dst->mat_nr = mmd->mat_rpl - 1; + } + + /* Add new stroke to cache, to be added to the frame once + * all duplicates have been made + */ + BLI_addtail(&stroke_cache, gps_dst); + } + } + } + + /* merge newly created stroke instances back into the main stroke list */ + if (mmd->flag & GP_ARRAY_KEEP_ONTOP) { + BLI_movelisttolist_reverse(&gpf->strokes, &stroke_cache); + } + else { + BLI_movelisttolist(&gpf->strokes, &stroke_cache); + } + + /* free temp data */ + MEM_SAFE_FREE(valid_strokes); +} + +static void bakeModifier( + 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) { + generate_geometry(md, depsgraph, ob, gpl, gpf); + } + } +} + +/* -------------------------------- */ + +/* Generic "generateStrokes" callback */ +static void generateStrokes( + GpencilModifierData *md, Depsgraph *depsgraph, + Object *ob, bGPDlayer *gpl, bGPDframe *gpf) +{ + generate_geometry(md, depsgraph, ob, gpl, gpf); +} + +static void updateDepsgraph(GpencilModifierData *md, const ModifierUpdateDepsgraphContext *ctx) +{ + ArrayGpencilModifierData *lmd = (ArrayGpencilModifierData *)md; + if (lmd->object != NULL) { + DEG_add_object_relation(ctx->node, lmd->object, DEG_OB_COMP_GEOMETRY, "Array Modifier"); + DEG_add_object_relation(ctx->node, lmd->object, DEG_OB_COMP_TRANSFORM, "Array Modifier"); + } + DEG_add_object_relation(ctx->node, ctx->object, DEG_OB_COMP_TRANSFORM, "Array Modifier"); +} + +static void foreachObjectLink( + GpencilModifierData *md, Object *ob, + ObjectWalkFunc walk, void *userData) +{ + ArrayGpencilModifierData *mmd = (ArrayGpencilModifierData *)md; + + walk(userData, ob, &mmd->object, IDWALK_CB_NOP); +} + + +GpencilModifierTypeInfo modifierType_Gpencil_Array = { + /* name */ "Array", + /* structName */ "ArrayGpencilModifierData", + /* structSize */ sizeof(ArrayGpencilModifierData), + /* type */ eGpencilModifierTypeType_Gpencil, + /* flags */ 0, + + /* copyData */ copyData, + + /* deformStroke */ NULL, + /* generateStrokes */ generateStrokes, + /* bakeModifier */ bakeModifier, + /* remapTime */ NULL, + + /* initData */ initData, + /* freeData */ NULL, + /* isDisabled */ NULL, + /* updateDepsgraph */ updateDepsgraph, + /* dependsOnTime */ NULL, + /* foreachObjectLink */ foreachObjectLink, + /* foreachIDLink */ NULL, + /* foreachTexLink */ NULL, +}; |