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blender-archive/source/blender/gpencil_modifiers/intern/MOD_gpenciloffset.c

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C

/*
* 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
*/
/** \file
* \ingroup modifiers
*/
#include <stdio.h>
#include "BLI_listbase.h"
#include "BLI_utildefines.h"
#include "BLT_translation.h"
#include "BLI_hash.h"
#include "BLI_math.h"
#include "BLI_rand.h"
#include "DNA_defaults.h"
#include "DNA_gpencil_modifier_types.h"
#include "DNA_gpencil_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_object_types.h"
#include "DNA_screen_types.h"
#include "BKE_context.h"
#include "BKE_deform.h"
#include "BKE_gpencil_geom.h"
#include "BKE_gpencil_modifier.h"
#include "BKE_lib_query.h"
#include "BKE_modifier.h"
#include "BKE_screen.h"
#include "DEG_depsgraph.h"
#include "UI_interface.h"
#include "UI_resources.h"
#include "MOD_gpencil_modifiertypes.h"
#include "MOD_gpencil_ui_common.h"
#include "MOD_gpencil_util.h"
static void initData(GpencilModifierData *md)
{
OffsetGpencilModifierData *gpmd = (OffsetGpencilModifierData *)md;
BLI_assert(MEMCMP_STRUCT_AFTER_IS_ZERO(gpmd, modifier));
MEMCPY_STRUCT_AFTER(gpmd, DNA_struct_default_get(OffsetGpencilModifierData), modifier);
}
static void copyData(const GpencilModifierData *md, GpencilModifierData *target)
{
BKE_gpencil_modifier_copydata_generic(md, target);
}
/* change stroke offsetness */
static void deformStroke(GpencilModifierData *md,
Depsgraph *UNUSED(depsgraph),
Object *ob,
bGPDlayer *gpl,
bGPDframe *gpf,
bGPDstroke *gps)
{
OffsetGpencilModifierData *mmd = (OffsetGpencilModifierData *)md;
const int def_nr = BKE_object_defgroup_name_index(ob, mmd->vgname);
float mat[4][4];
float loc[3], rot[3], scale[3];
if (!is_stroke_affected_by_modifier(ob,
mmd->layername,
mmd->material,
mmd->pass_index,
mmd->layer_pass,
1,
gpl,
gps,
mmd->flag & GP_OFFSET_INVERT_LAYER,
mmd->flag & GP_OFFSET_INVERT_PASS,
mmd->flag & GP_OFFSET_INVERT_LAYERPASS,
mmd->flag & GP_OFFSET_INVERT_MATERIAL)) {
return;
}
int seed = mmd->seed;
/* Make sure different modifiers get different seeds. */
seed += BLI_hash_string(ob->id.name + 2);
seed += BLI_hash_string(md->name);
float rand[3][3];
float rand_offset = BLI_hash_int_01(seed);
/* Get stroke index for random offset. */
int rnd_index = BLI_findindex(&gpf->strokes, gps);
for (int j = 0; j < 3; j++) {
const uint primes[3] = {2, 3, 7};
double offset[3] = {0.0f, 0.0f, 0.0f};
double r[3];
/* To ensure a nice distribution, we use halton sequence and offset using the seed. */
BLI_halton_3d(primes, offset, rnd_index, r);
if ((mmd->flag & GP_OFFSET_UNIFORM_RANDOM_SCALE) && j == 2) {
float rand_value;
rand_value = fmodf(r[0] * 2.0f - 1.0f + rand_offset, 1.0f);
rand_value = fmodf(sin(rand_value * 12.9898f + j * 78.233f) * 43758.5453f, 1.0f);
copy_v3_fl(rand[j], rand_value);
}
else {
for (int i = 0; i < 3; i++) {
rand[j][i] = fmodf(r[i] * 2.0f - 1.0f + rand_offset, 1.0f);
rand[j][i] = fmodf(sin(rand[j][i] * 12.9898f + j * 78.233f) * 43758.5453f, 1.0f);
}
}
}
/* Calculate Random matrix. */
float mat_rnd[4][4];
float rnd_loc[3], rnd_rot[3];
float rnd_scale[3] = {1.0f, 1.0f, 1.0f};
mul_v3_v3v3(rnd_loc, mmd->rnd_offset, rand[0]);
mul_v3_v3v3(rnd_rot, mmd->rnd_rot, rand[1]);
madd_v3_v3v3(rnd_scale, mmd->rnd_scale, rand[2]);
loc_eul_size_to_mat4(mat_rnd, rnd_loc, rnd_rot, rnd_scale);
bGPdata *gpd = ob->data;
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_OFFSET_INVERT_VGROUP) != 0, def_nr);
if (weight < 0.0f) {
continue;
}
/* Apply randomness matrix. */
mul_m4_v3(mat_rnd, &pt->x);
/* Calculate matrix. */
mul_v3_v3fl(loc, mmd->loc, weight);
mul_v3_v3fl(rot, mmd->rot, weight);
mul_v3_v3fl(scale, mmd->scale, weight);
add_v3_fl(scale, 1.0);
loc_eul_size_to_mat4(mat, loc, rot, scale);
/* Apply scale to thickness. */
float unit_scale = (scale[0] + scale[1] + scale[2]) / 3.0f;
pt->pressure *= unit_scale;
mul_m4_v3(mat, &pt->x);
}
/* Calc geometry data. */
BKE_gpencil_stroke_geometry_update(gpd, gps);
}
static void bakeModifier(struct Main *UNUSED(bmain),
Depsgraph *depsgraph,
GpencilModifierData *md,
Object *ob)
{
bGPdata *gpd = ob->data;
LISTBASE_FOREACH (bGPDlayer *, gpl, &gpd->layers) {
LISTBASE_FOREACH (bGPDframe *, gpf, &gpl->frames) {
LISTBASE_FOREACH (bGPDstroke *, gps, &gpf->strokes) {
deformStroke(md, depsgraph, ob, gpl, gpf, gps);
}
}
}
}
static void foreachIDLink(GpencilModifierData *md, Object *ob, IDWalkFunc walk, void *userData)
{
OffsetGpencilModifierData *mmd = (OffsetGpencilModifierData *)md;
walk(userData, ob, (ID **)&mmd->material, IDWALK_CB_USER);
}
static void panel_draw(const bContext *UNUSED(C), Panel *panel)
{
uiLayout *layout = panel->layout;
PointerRNA *ptr = gpencil_modifier_panel_get_property_pointers(panel, NULL);
uiLayoutSetPropSep(layout, true);
uiItemR(layout, ptr, "location", 0, NULL, ICON_NONE);
uiItemR(layout, ptr, "rotation", 0, NULL, ICON_NONE);
uiItemR(layout, ptr, "scale", 0, NULL, ICON_NONE);
gpencil_modifier_panel_end(layout, ptr);
}
static void random_panel_draw(const bContext *UNUSED(C), Panel *panel)
{
uiLayout *layout = panel->layout;
PointerRNA *ptr = gpencil_modifier_panel_get_property_pointers(panel, NULL);
uiLayoutSetPropSep(layout, true);
uiItemR(layout, ptr, "random_offset", 0, IFACE_("Offset"), ICON_NONE);
uiItemR(layout, ptr, "random_rotation", 0, IFACE_("Rotation"), ICON_NONE);
uiItemR(layout, ptr, "random_scale", 0, IFACE_("Scale"), ICON_NONE);
uiItemR(layout, ptr, "use_uniform_random_scale", 0, NULL, ICON_NONE);
uiItemR(layout, ptr, "seed", 0, NULL, ICON_NONE);
}
static void mask_panel_draw(const bContext *UNUSED(C), Panel *panel)
{
gpencil_modifier_masking_panel_draw(panel, true, true);
}
static void panelRegister(ARegionType *region_type)
{
PanelType *panel_type = gpencil_modifier_panel_register(
region_type, eGpencilModifierType_Offset, panel_draw);
gpencil_modifier_subpanel_register(
region_type, "randomize", "Randomize", NULL, random_panel_draw, panel_type);
gpencil_modifier_subpanel_register(
region_type, "mask", "Influence", NULL, mask_panel_draw, panel_type);
}
GpencilModifierTypeInfo modifierType_Gpencil_Offset = {
/* name */ "Offset",
/* structName */ "OffsetGpencilModifierData",
/* structSize */ sizeof(OffsetGpencilModifierData),
/* type */ eGpencilModifierTypeType_Gpencil,
/* flags */ eGpencilModifierTypeFlag_SupportsEditmode,
/* copyData */ copyData,
/* deformStroke */ deformStroke,
/* generateStrokes */ NULL,
/* bakeModifier */ bakeModifier,
/* remapTime */ NULL,
/* initData */ initData,
/* freeData */ NULL,
/* isDisabled */ NULL,
/* updateDepsgraph */ NULL,
/* dependsOnTime */ NULL,
/* foreachIDLink */ foreachIDLink,
/* foreachTexLink */ NULL,
/* panelRegister */ panelRegister,
};