376 lines
12 KiB
C
376 lines
12 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 "BLI_hash.h"
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#include "BLI_math_vector.h"
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#include "BLT_translation.h"
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#include "MEM_guardedalloc.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_colortools.h"
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#include "BKE_context.h"
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#include "BKE_deform.h"
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#include "BKE_gpencil.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 "DEG_depsgraph_query.h"
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#include "UI_interface.h"
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#include "UI_resources.h"
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#include "RNA_access.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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NoiseGpencilModifierData *gpmd = (NoiseGpencilModifierData *)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(NoiseGpencilModifierData), modifier);
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gpmd->curve_intensity = BKE_curvemapping_add(1, 0.0f, 0.0f, 1.0f, 1.0f);
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CurveMapping *curve = gpmd->curve_intensity;
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BKE_curvemap_reset(curve->cm, &curve->clipr, CURVE_PRESET_BELL, CURVEMAP_SLOPE_POSITIVE);
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BKE_curvemapping_init(curve);
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}
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static void freeData(GpencilModifierData *md)
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{
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NoiseGpencilModifierData *gpmd = (NoiseGpencilModifierData *)md;
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if (gpmd->curve_intensity) {
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BKE_curvemapping_free(gpmd->curve_intensity);
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}
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}
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static void copyData(const GpencilModifierData *md, GpencilModifierData *target)
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{
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NoiseGpencilModifierData *gmd = (NoiseGpencilModifierData *)md;
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NoiseGpencilModifierData *tgmd = (NoiseGpencilModifierData *)target;
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if (tgmd->curve_intensity != NULL) {
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BKE_curvemapping_free(tgmd->curve_intensity);
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tgmd->curve_intensity = NULL;
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}
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BKE_gpencil_modifier_copydata_generic(md, target);
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tgmd->curve_intensity = BKE_curvemapping_copy(gmd->curve_intensity);
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}
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static bool dependsOnTime(GpencilModifierData *md)
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{
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NoiseGpencilModifierData *mmd = (NoiseGpencilModifierData *)md;
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return (mmd->flag & GP_NOISE_USE_RANDOM) != 0;
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}
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static float *noise_table(int len, int offset, int seed)
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{
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float *table = MEM_callocN(sizeof(float) * len, __func__);
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for (int i = 0; i < len; i++) {
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table[i] = BLI_hash_int_01(BLI_hash_int_2d(seed, i + offset + 1));
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}
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return table;
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}
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BLI_INLINE float table_sample(float *table, float x)
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{
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return interpf(table[(int)ceilf(x)], table[(int)floor(x)], fractf(x));
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}
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/**
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* Apply noise effect based on stroke direction.
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*/
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static void deformStroke(GpencilModifierData *md,
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Depsgraph *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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NoiseGpencilModifierData *mmd = (NoiseGpencilModifierData *)md;
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MDeformVert *dvert = NULL;
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/* Noise value in range [-1..1] */
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float normal[3];
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float vec1[3], vec2[3];
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const int def_nr = BKE_object_defgroup_name_index(ob, mmd->vgname);
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const bool invert_group = (mmd->flag & GP_NOISE_INVERT_VGROUP) != 0;
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const bool use_curve = (mmd->flag & GP_NOISE_CUSTOM_CURVE) != 0 && mmd->curve_intensity;
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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_NOISE_INVERT_LAYER,
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mmd->flag & GP_NOISE_INVERT_PASS,
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mmd->flag & GP_NOISE_INVERT_LAYERPASS,
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mmd->flag & GP_NOISE_INVERT_MATERIAL)) {
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return;
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}
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int seed = mmd->seed;
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/* FIXME(fclem): This is really slow. We should get the stroke index in another way. */
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int stroke_seed = BLI_findindex(&gpf->strokes, gps);
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seed += stroke_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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if (mmd->flag & GP_NOISE_USE_RANDOM) {
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seed += ((int)DEG_get_ctime(depsgraph)) / mmd->step;
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}
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/* Sanitize as it can create out of bound reads. */
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float noise_scale = clamp_f(mmd->noise_scale, 0.0f, 1.0f);
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int len = ceilf(gps->totpoints * noise_scale) + 2;
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float *noise_table_position = (mmd->factor > 0.0f) ?
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noise_table(len, (int)floor(mmd->noise_offset), seed + 2) :
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NULL;
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float *noise_table_strength = (mmd->factor_strength > 0.0f) ?
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noise_table(len, (int)floor(mmd->noise_offset), seed + 3) :
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NULL;
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float *noise_table_thickness = (mmd->factor_thickness > 0.0f) ?
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noise_table(len, (int)floor(mmd->noise_offset), seed) :
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NULL;
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float *noise_table_uvs = (mmd->factor_uvs > 0.0f) ?
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noise_table(len, (int)floor(mmd->noise_offset), seed + 4) :
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NULL;
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/* Calculate stroke normal. */
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if (gps->totpoints > 2) {
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BKE_gpencil_stroke_normal(gps, normal);
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if (is_zero_v3(normal)) {
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copy_v3_fl(normal, 1.0f);
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}
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}
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else {
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copy_v3_fl(normal, 1.0f);
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}
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/* move points */
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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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/* verify vertex group */
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dvert = gps->dvert != NULL ? &gps->dvert[i] : NULL;
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float weight = get_modifier_point_weight(dvert, invert_group, def_nr);
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if (weight < 0.0f) {
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continue;
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}
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if (use_curve) {
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float value = (float)i / (gps->totpoints - 1);
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weight *= BKE_curvemapping_evaluateF(mmd->curve_intensity, 0, value);
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}
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if (mmd->factor > 0.0f) {
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/* Offset point randomly around the bi-normal vector. */
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if (gps->totpoints == 1) {
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copy_v3_fl3(vec1, 1.0f, 0.0f, 0.0f);
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}
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else if (i != gps->totpoints - 1) {
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/* Initial vector (p1 -> p0). */
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sub_v3_v3v3(vec1, &gps->points[i].x, &gps->points[i + 1].x);
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/* if vec2 is zero, set to something */
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if (len_squared_v3(vec1) < 1e-8f) {
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copy_v3_fl3(vec1, 1.0f, 0.0f, 0.0f);
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}
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}
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else {
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/* Last point reuse the penultimate normal (still stored in vec1)
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* because the previous point is already modified. */
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}
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/* Vector orthogonal to normal. */
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cross_v3_v3v3(vec2, vec1, normal);
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normalize_v3(vec2);
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float noise = table_sample(noise_table_position,
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i * noise_scale + fractf(mmd->noise_offset));
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madd_v3_v3fl(&pt->x, vec2, (noise * 2.0f - 1.0f) * weight * mmd->factor * 0.1f);
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}
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if (mmd->factor_thickness > 0.0f) {
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float noise = table_sample(noise_table_thickness,
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i * noise_scale + fractf(mmd->noise_offset));
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pt->pressure *= max_ff(1.0f + (noise * 2.0f - 1.0f) * weight * mmd->factor_thickness, 0.0f);
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CLAMP_MIN(pt->pressure, GPENCIL_STRENGTH_MIN);
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}
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if (mmd->factor_strength > 0.0f) {
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float noise = table_sample(noise_table_strength,
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i * noise_scale + fractf(mmd->noise_offset));
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pt->strength *= max_ff(1.0f - noise * weight * mmd->factor_strength, 0.0f);
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CLAMP(pt->strength, GPENCIL_STRENGTH_MIN, 1.0f);
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}
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if (mmd->factor_uvs > 0.0f) {
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float noise = table_sample(noise_table_uvs, i * noise_scale + fractf(mmd->noise_offset));
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pt->uv_rot += (noise * 2.0f - 1.0f) * weight * mmd->factor_uvs * M_PI_2;
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CLAMP(pt->uv_rot, -M_PI_2, M_PI_2);
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}
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}
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MEM_SAFE_FREE(noise_table_position);
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MEM_SAFE_FREE(noise_table_strength);
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MEM_SAFE_FREE(noise_table_thickness);
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MEM_SAFE_FREE(noise_table_uvs);
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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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NoiseGpencilModifierData *mmd = (NoiseGpencilModifierData *)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 *col;
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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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col = uiLayoutColumn(layout, false);
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uiItemR(col, ptr, "factor", 0, IFACE_("Position"), ICON_NONE);
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uiItemR(col, ptr, "factor_strength", 0, IFACE_("Strength"), ICON_NONE);
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uiItemR(col, ptr, "factor_thickness", 0, IFACE_("Thickness"), ICON_NONE);
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uiItemR(col, ptr, "factor_uvs", 0, IFACE_("UV"), ICON_NONE);
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uiItemR(col, ptr, "noise_scale", 0, NULL, ICON_NONE);
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uiItemR(col, ptr, "noise_offset", 0, NULL, ICON_NONE);
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uiItemR(col, ptr, "seed", 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_header_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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uiItemR(layout, ptr, "random", 0, IFACE_("Randomize"), ICON_NONE);
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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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uiLayoutSetActive(layout, RNA_boolean_get(ptr, "random"));
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uiItemR(layout, ptr, "step", 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_Noise, panel_draw);
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gpencil_modifier_subpanel_register(
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region_type, "randomize", "", random_header_draw, random_panel_draw, panel_type);
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PanelType *mask_panel_type = gpencil_modifier_subpanel_register(
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region_type, "mask", "Influence", NULL, mask_panel_draw, panel_type);
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gpencil_modifier_subpanel_register(region_type,
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"curve",
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"",
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gpencil_modifier_curve_header_draw,
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gpencil_modifier_curve_panel_draw,
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mask_panel_type);
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}
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GpencilModifierTypeInfo modifierType_Gpencil_Noise = {
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/* name */ "Noise",
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/* structName */ "NoiseGpencilModifierData",
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/* structSize */ sizeof(NoiseGpencilModifierData),
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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 */ freeData,
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/* isDisabled */ NULL,
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/* updateDepsgraph */ NULL,
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/* dependsOnTime */ dependsOnTime,
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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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