264 lines
8.3 KiB
C
264 lines
8.3 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2017, Blender Foundation
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* This is a new part of Blender
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*/
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/** \file
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* \ingroup modifiers
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*/
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#include <stdio.h>
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#include "BLI_listbase.h"
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#include "BLI_utildefines.h"
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#include "BLT_translation.h"
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#include "BLI_hash.h"
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#include "BLI_math.h"
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#include "BLI_rand.h"
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#include "DNA_defaults.h"
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#include "DNA_gpencil_modifier_types.h"
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#include "DNA_gpencil_types.h"
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#include "DNA_meshdata_types.h"
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#include "DNA_object_types.h"
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#include "DNA_screen_types.h"
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#include "BKE_context.h"
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#include "BKE_deform.h"
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#include "BKE_gpencil_geom.h"
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#include "BKE_gpencil_modifier.h"
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#include "BKE_lib_query.h"
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#include "BKE_modifier.h"
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#include "BKE_screen.h"
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#include "DEG_depsgraph.h"
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#include "UI_interface.h"
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#include "UI_resources.h"
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#include "MOD_gpencil_modifiertypes.h"
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#include "MOD_gpencil_ui_common.h"
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#include "MOD_gpencil_util.h"
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static void initData(GpencilModifierData *md)
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{
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OffsetGpencilModifierData *gpmd = (OffsetGpencilModifierData *)md;
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BLI_assert(MEMCMP_STRUCT_AFTER_IS_ZERO(gpmd, modifier));
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MEMCPY_STRUCT_AFTER(gpmd, DNA_struct_default_get(OffsetGpencilModifierData), modifier);
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}
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static void copyData(const GpencilModifierData *md, GpencilModifierData *target)
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{
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BKE_gpencil_modifier_copydata_generic(md, target);
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}
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/* change stroke offsetness */
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static void deformStroke(GpencilModifierData *md,
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Depsgraph *UNUSED(depsgraph),
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Object *ob,
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bGPDlayer *gpl,
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bGPDframe *gpf,
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bGPDstroke *gps)
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{
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OffsetGpencilModifierData *mmd = (OffsetGpencilModifierData *)md;
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const int def_nr = BKE_object_defgroup_name_index(ob, mmd->vgname);
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float mat[4][4];
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float loc[3], rot[3], scale[3];
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if (!is_stroke_affected_by_modifier(ob,
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mmd->layername,
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mmd->material,
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mmd->pass_index,
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mmd->layer_pass,
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1,
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gpl,
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gps,
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mmd->flag & GP_OFFSET_INVERT_LAYER,
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mmd->flag & GP_OFFSET_INVERT_PASS,
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mmd->flag & GP_OFFSET_INVERT_LAYERPASS,
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mmd->flag & GP_OFFSET_INVERT_MATERIAL)) {
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return;
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}
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int seed = mmd->seed;
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/* Make sure different modifiers get different seeds. */
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seed += BLI_hash_string(ob->id.name + 2);
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seed += BLI_hash_string(md->name);
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float rand[3][3];
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float rand_offset = BLI_hash_int_01(seed);
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/* Get stroke index for random offset. */
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int rnd_index = BLI_findindex(&gpf->strokes, gps);
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for (int j = 0; j < 3; j++) {
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const uint primes[3] = {2, 3, 7};
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double offset[3] = {0.0f, 0.0f, 0.0f};
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double r[3];
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/* To ensure a nice distribution, we use halton sequence and offset using the seed. */
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BLI_halton_3d(primes, offset, rnd_index, r);
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if ((mmd->flag & GP_OFFSET_UNIFORM_RANDOM_SCALE) && j == 2) {
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float rand_value;
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rand_value = fmodf(r[0] * 2.0f - 1.0f + rand_offset, 1.0f);
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rand_value = fmodf(sin(rand_value * 12.9898f + j * 78.233f) * 43758.5453f, 1.0f);
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copy_v3_fl(rand[j], rand_value);
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}
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else {
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for (int i = 0; i < 3; i++) {
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rand[j][i] = fmodf(r[i] * 2.0f - 1.0f + rand_offset, 1.0f);
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rand[j][i] = fmodf(sin(rand[j][i] * 12.9898f + j * 78.233f) * 43758.5453f, 1.0f);
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}
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}
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}
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/* Calculate Random matrix. */
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float mat_rnd[4][4];
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float rnd_loc[3], rnd_rot[3];
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float rnd_scale[3] = {1.0f, 1.0f, 1.0f};
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mul_v3_v3v3(rnd_loc, mmd->rnd_offset, rand[0]);
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mul_v3_v3v3(rnd_rot, mmd->rnd_rot, rand[1]);
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madd_v3_v3v3(rnd_scale, mmd->rnd_scale, rand[2]);
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loc_eul_size_to_mat4(mat_rnd, rnd_loc, rnd_rot, rnd_scale);
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bGPdata *gpd = ob->data;
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for (int i = 0; i < gps->totpoints; i++) {
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bGPDspoint *pt = &gps->points[i];
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MDeformVert *dvert = gps->dvert != NULL ? &gps->dvert[i] : NULL;
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/* Verify vertex group. */
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const float weight = get_modifier_point_weight(
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dvert, (mmd->flag & GP_OFFSET_INVERT_VGROUP) != 0, def_nr);
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if (weight < 0.0f) {
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continue;
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}
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/* Apply randomness matrix. */
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mul_m4_v3(mat_rnd, &pt->x);
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/* Calculate matrix. */
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mul_v3_v3fl(loc, mmd->loc, weight);
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mul_v3_v3fl(rot, mmd->rot, weight);
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mul_v3_v3fl(scale, mmd->scale, weight);
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add_v3_fl(scale, 1.0);
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loc_eul_size_to_mat4(mat, loc, rot, scale);
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/* Apply scale to thickness. */
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float unit_scale = (scale[0] + scale[1] + scale[2]) / 3.0f;
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pt->pressure *= unit_scale;
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mul_m4_v3(mat, &pt->x);
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}
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/* Calc geometry data. */
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BKE_gpencil_stroke_geometry_update(gpd, gps);
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}
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static void bakeModifier(struct Main *UNUSED(bmain),
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Depsgraph *depsgraph,
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GpencilModifierData *md,
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Object *ob)
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{
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bGPdata *gpd = ob->data;
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LISTBASE_FOREACH (bGPDlayer *, gpl, &gpd->layers) {
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LISTBASE_FOREACH (bGPDframe *, gpf, &gpl->frames) {
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LISTBASE_FOREACH (bGPDstroke *, gps, &gpf->strokes) {
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deformStroke(md, depsgraph, ob, gpl, gpf, gps);
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}
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}
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}
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}
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static void foreachIDLink(GpencilModifierData *md, Object *ob, IDWalkFunc walk, void *userData)
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{
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OffsetGpencilModifierData *mmd = (OffsetGpencilModifierData *)md;
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walk(userData, ob, (ID **)&mmd->material, IDWALK_CB_USER);
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}
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static void panel_draw(const bContext *UNUSED(C), Panel *panel)
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{
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uiLayout *layout = panel->layout;
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PointerRNA *ptr = gpencil_modifier_panel_get_property_pointers(panel, NULL);
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uiLayoutSetPropSep(layout, true);
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uiItemR(layout, ptr, "location", 0, NULL, ICON_NONE);
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uiItemR(layout, ptr, "rotation", 0, NULL, ICON_NONE);
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uiItemR(layout, ptr, "scale", 0, NULL, ICON_NONE);
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gpencil_modifier_panel_end(layout, ptr);
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}
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static void random_panel_draw(const bContext *UNUSED(C), Panel *panel)
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{
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uiLayout *layout = panel->layout;
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PointerRNA *ptr = gpencil_modifier_panel_get_property_pointers(panel, NULL);
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uiLayoutSetPropSep(layout, true);
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uiItemR(layout, ptr, "random_offset", 0, IFACE_("Offset"), ICON_NONE);
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uiItemR(layout, ptr, "random_rotation", 0, IFACE_("Rotation"), ICON_NONE);
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uiItemR(layout, ptr, "random_scale", 0, IFACE_("Scale"), ICON_NONE);
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uiItemR(layout, ptr, "use_uniform_random_scale", 0, NULL, ICON_NONE);
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uiItemR(layout, ptr, "seed", 0, NULL, ICON_NONE);
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}
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static void mask_panel_draw(const bContext *UNUSED(C), Panel *panel)
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{
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gpencil_modifier_masking_panel_draw(panel, true, true);
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}
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static void panelRegister(ARegionType *region_type)
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{
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PanelType *panel_type = gpencil_modifier_panel_register(
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region_type, eGpencilModifierType_Offset, panel_draw);
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gpencil_modifier_subpanel_register(
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region_type, "randomize", "Randomize", NULL, random_panel_draw, panel_type);
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gpencil_modifier_subpanel_register(
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region_type, "mask", "Influence", NULL, mask_panel_draw, panel_type);
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}
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GpencilModifierTypeInfo modifierType_Gpencil_Offset = {
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/* name */ "Offset",
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/* structName */ "OffsetGpencilModifierData",
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/* structSize */ sizeof(OffsetGpencilModifierData),
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/* type */ eGpencilModifierTypeType_Gpencil,
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/* flags */ eGpencilModifierTypeFlag_SupportsEditmode,
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/* copyData */ copyData,
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/* deformStroke */ deformStroke,
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/* generateStrokes */ NULL,
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/* bakeModifier */ bakeModifier,
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/* remapTime */ NULL,
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/* initData */ initData,
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/* freeData */ NULL,
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/* isDisabled */ NULL,
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/* updateDepsgraph */ NULL,
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/* dependsOnTime */ NULL,
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/* foreachIDLink */ foreachIDLink,
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/* foreachTexLink */ NULL,
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/* panelRegister */ panelRegister,
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};
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