390 lines
12 KiB
C++
390 lines
12 KiB
C++
/* SPDX-FileCopyrightText: 2017 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup modifiers
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*/
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#include <cstdio>
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#include "BLI_utildefines.h"
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#include "BLI_math_matrix.h"
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#include "BLI_math_vector.h"
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#include "BLT_translation.hh"
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#include "DNA_defaults.h"
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#include "DNA_gpencil_legacy_types.h"
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#include "DNA_gpencil_modifier_types.h"
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#include "DNA_material_types.h"
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#include "DNA_meshdata_types.h"
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#include "DNA_modifier_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_colorband.hh"
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#include "BKE_colortools.hh"
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#include "BKE_deform.hh"
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#include "BKE_gpencil_modifier_legacy.h"
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#include "BKE_lib_query.hh"
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#include "BKE_material.h"
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#include "BKE_modifier.hh"
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#include "MEM_guardedalloc.h"
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#include "UI_interface.hh"
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#include "UI_resources.hh"
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#include "RNA_access.hh"
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#include "MOD_gpencil_legacy_ui_common.h"
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#include "MOD_gpencil_legacy_util.h"
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#include "DEG_depsgraph_build.hh"
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static void init_data(GpencilModifierData *md)
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{
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TintGpencilModifierData *gpmd = (TintGpencilModifierData *)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(TintGpencilModifierData), modifier);
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/* Add default color ramp. */
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gpmd->colorband = BKE_colorband_add(false);
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if (gpmd->colorband) {
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BKE_colorband_init(gpmd->colorband, true);
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CBData *ramp = gpmd->colorband->data;
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ramp[0].r = ramp[0].g = ramp[0].b = ramp[0].a = 1.0f;
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ramp[0].pos = 0.0f;
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ramp[1].r = ramp[1].g = ramp[1].b = 0.0f;
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ramp[1].a = 1.0f;
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ramp[1].pos = 1.0f;
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gpmd->colorband->tot = 2;
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}
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gpmd->curve_intensity = BKE_curvemapping_add(1, 0.0f, 0.0f, 1.0f, 1.0f);
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BKE_curvemapping_init(gpmd->curve_intensity);
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}
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static void copy_data(const GpencilModifierData *md, GpencilModifierData *target)
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{
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TintGpencilModifierData *gmd = (TintGpencilModifierData *)md;
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TintGpencilModifierData *tgmd = (TintGpencilModifierData *)target;
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MEM_SAFE_FREE(tgmd->colorband);
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if (tgmd->curve_intensity != nullptr) {
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BKE_curvemapping_free(tgmd->curve_intensity);
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tgmd->curve_intensity = nullptr;
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}
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BKE_gpencil_modifier_copydata_generic(md, target);
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if (gmd->colorband) {
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tgmd->colorband = static_cast<ColorBand *>(MEM_dupallocN(gmd->colorband));
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}
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tgmd->curve_intensity = BKE_curvemapping_copy(gmd->curve_intensity);
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}
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/* deform stroke */
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static void deform_stroke(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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TintGpencilModifierData *mmd = (TintGpencilModifierData *)md;
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if ((mmd->type == GP_TINT_GRADIENT) && (!mmd->object)) {
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return;
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}
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const int def_nr = BKE_object_defgroup_name_index(ob, mmd->vgname);
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const bool use_curve = (mmd->flag & GP_TINT_CUSTOM_CURVE) != 0 && mmd->curve_intensity;
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bool is_inverted = ((mmd->flag & GP_TINT_WEIGHT_FACTOR) == 0) &&
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((mmd->flag & GP_TINT_INVERT_VGROUP) != 0);
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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_TINT_INVERT_LAYER,
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mmd->flag & GP_TINT_INVERT_PASS,
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mmd->flag & GP_TINT_INVERT_LAYERPASS,
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mmd->flag & GP_TINT_INVERT_MATERIAL))
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{
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return;
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}
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MaterialGPencilStyle *gp_style = BKE_gpencil_material_settings(ob, gps->mat_nr + 1);
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const bool is_gradient = (mmd->type == GP_TINT_GRADIENT);
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/* If factor > 1.0, affect the strength of the stroke. */
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if (mmd->factor > 1.0f) {
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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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pt->strength += mmd->factor - 1.0f;
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CLAMP(pt->strength, 0.0f, 1.0f);
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}
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}
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float coba_res[4];
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float matrix[4][4];
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if (is_gradient) {
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mul_m4_m4m4(matrix, mmd->object->world_to_object().ptr(), ob->object_to_world().ptr());
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}
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/* loop points and apply color. */
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bool fill_done = false;
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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 != nullptr ? &gps->dvert[i] : nullptr;
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if (!fill_done) {
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/* Apply to fill. */
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if (mmd->mode != GPPAINT_MODE_STROKE) {
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float fill_factor = mmd->factor;
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/* Use weighted factor. */
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if (mmd->flag & GP_TINT_WEIGHT_FACTOR) {
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/* Use first point for weight. */
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MDeformVert *dvert_fill = (gps->dvert != nullptr) ? &gps->dvert[0] : nullptr;
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float weight = get_modifier_point_weight(dvert_fill, is_inverted, def_nr);
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if (weight >= 0.0f) {
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fill_factor = ((mmd->flag & GP_TINT_INVERT_VGROUP) ? 1.0f - weight : weight);
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}
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}
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/* If not using Vertex Color, use the material color. */
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if ((gp_style != nullptr) && (gps->vert_color_fill[3] == 0.0f) &&
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(gp_style->fill_rgba[3] > 0.0f))
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{
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copy_v4_v4(gps->vert_color_fill, gp_style->fill_rgba);
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gps->vert_color_fill[3] = 1.0f;
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}
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if (is_gradient) {
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float center[3];
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add_v3_v3v3(center, gps->boundbox_min, gps->boundbox_max);
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mul_v3_fl(center, 0.5f);
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float pt_loc[3];
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mul_v3_m4v3(pt_loc, matrix, &pt->x);
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float dist = len_v3(pt_loc);
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float mix_factor = clamp_f(dist / mmd->radius, 0.0f, 1.0f);
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BKE_colorband_evaluate(mmd->colorband, mix_factor, coba_res);
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interp_v3_v3v3(gps->vert_color_fill, gps->vert_color_fill, coba_res, mmd->factor);
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gps->vert_color_fill[3] = clamp_f(fill_factor, 0.0f, 1.0f);
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}
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else {
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interp_v3_v3v3(gps->vert_color_fill,
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gps->vert_color_fill,
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mmd->rgb,
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clamp_f(fill_factor, 0.0f, 1.0f));
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}
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/* If no stroke, cancel loop. */
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if (mmd->mode != GPPAINT_MODE_BOTH) {
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break;
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}
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}
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fill_done = true;
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}
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/* Verify vertex group. */
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if (mmd->mode != GPPAINT_MODE_FILL) {
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float weight = get_modifier_point_weight(dvert, is_inverted, def_nr);
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if (weight < 0.0f) {
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continue;
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}
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float factor = mmd->factor;
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/* Custom curve to modulate value. */
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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 not using Vertex Color, use the material color. */
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if ((gp_style != nullptr) && (pt->vert_color[3] == 0.0f) &&
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(gp_style->stroke_rgba[3] > 0.0f))
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{
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copy_v4_v4(pt->vert_color, gp_style->stroke_rgba);
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pt->vert_color[3] = 1.0f;
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}
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/* Apply weight directly. */
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if (mmd->flag & GP_TINT_WEIGHT_FACTOR) {
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factor = ((mmd->flag & GP_TINT_INVERT_VGROUP) ? 1.0f - weight : weight);
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weight = 1.0f;
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}
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if (is_gradient) {
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/* Calc world position of point. */
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float pt_loc[3];
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mul_v3_m4v3(pt_loc, matrix, &pt->x);
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float dist = len_v3(pt_loc);
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/* Calc the factor using the distance and get mix color. */
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float mix_factor = clamp_f(dist / mmd->radius, 0.0f, 1.0f);
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BKE_colorband_evaluate(mmd->colorband, mix_factor, coba_res);
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interp_v3_v3v3(pt->vert_color,
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pt->vert_color,
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coba_res,
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clamp_f(factor, 0.0f, 1.0f) * weight * coba_res[3]);
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}
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else {
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interp_v3_v3v3(
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pt->vert_color, pt->vert_color, mmd->rgb, clamp_f(factor * weight, 0.0, 1.0f));
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}
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}
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}
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}
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/* FIXME: Ideally we be doing this on a copy of the main depsgraph
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* (i.e. one where we don't have to worry about restoring state)
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*/
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static void bake_modifier(Main * /*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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TintGpencilModifierData *mmd = (TintGpencilModifierData *)md;
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if ((mmd->type == GP_TINT_GRADIENT) && (mmd->object == nullptr)) {
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return;
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}
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generic_bake_deform_stroke(depsgraph, md, ob, true, deform_stroke);
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}
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static void free_data(GpencilModifierData *md)
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{
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TintGpencilModifierData *mmd = (TintGpencilModifierData *)md;
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MEM_SAFE_FREE(mmd->colorband);
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if (mmd->curve_intensity) {
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BKE_curvemapping_free(mmd->curve_intensity);
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}
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}
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static bool is_disabled(GpencilModifierData *md, bool /*use_render_params*/)
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{
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TintGpencilModifierData *mmd = (TintGpencilModifierData *)md;
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if (mmd->type == GP_TINT_UNIFORM) {
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return false;
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}
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return !mmd->object;
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}
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static void update_depsgraph(GpencilModifierData *md,
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const ModifierUpdateDepsgraphContext *ctx,
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const int /*mode*/)
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{
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TintGpencilModifierData *lmd = (TintGpencilModifierData *)md;
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if (lmd->object != nullptr) {
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DEG_add_object_relation(ctx->node, lmd->object, DEG_OB_COMP_GEOMETRY, "Vertexcolor Modifier");
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DEG_add_object_relation(ctx->node, lmd->object, DEG_OB_COMP_TRANSFORM, "Vertexcolor Modifier");
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}
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DEG_add_object_relation(ctx->node, ctx->object, DEG_OB_COMP_TRANSFORM, "Vertexcolor Modifier");
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}
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static void foreach_ID_link(GpencilModifierData *md, Object *ob, IDWalkFunc walk, void *user_data)
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{
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TintGpencilModifierData *mmd = (TintGpencilModifierData *)md;
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walk(user_data, ob, (ID **)&mmd->material, IDWALK_CB_USER);
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walk(user_data, ob, (ID **)&mmd->object, IDWALK_CB_NOP);
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}
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static void panel_draw(const bContext * /*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, nullptr);
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int tint_type = RNA_enum_get(ptr, "tint_type");
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uiLayoutSetPropSep(layout, true);
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uiItemR(layout, ptr, "vertex_mode", UI_ITEM_NONE, nullptr, ICON_NONE);
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const bool is_weighted = !RNA_boolean_get(ptr, "use_weight_factor");
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uiLayout *row = uiLayoutRow(layout, true);
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uiLayoutSetActive(row, is_weighted);
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uiItemR(row, ptr, "factor", UI_ITEM_NONE, nullptr, ICON_NONE);
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uiLayout *sub = uiLayoutRow(row, true);
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uiLayoutSetActive(sub, true);
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uiItemR(row, ptr, "use_weight_factor", UI_ITEM_NONE, "", ICON_MOD_VERTEX_WEIGHT);
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uiItemR(layout, ptr, "tint_type", UI_ITEM_R_EXPAND, nullptr, ICON_NONE);
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if (tint_type == GP_TINT_UNIFORM) {
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uiItemR(layout, ptr, "color", UI_ITEM_NONE, nullptr, ICON_NONE);
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}
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else {
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col = uiLayoutColumn(layout, false);
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uiLayoutSetPropSep(col, false);
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uiTemplateColorRamp(col, ptr, "colors", true);
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uiItemS(layout);
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uiItemR(layout, ptr, "object", UI_ITEM_NONE, nullptr, ICON_NONE);
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uiItemR(layout, ptr, "radius", UI_ITEM_NONE, nullptr, ICON_NONE);
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}
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gpencil_modifier_panel_end(layout, ptr);
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}
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static void mask_panel_draw(const bContext * /*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 panel_register(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_Tint, panel_draw);
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PanelType *mask_panel_type = gpencil_modifier_subpanel_register(
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region_type, "mask", "Influence", nullptr, 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_Tint = {
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/*name*/ N_("Tint"),
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/*struct_name*/ "TintGpencilModifierData",
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/*struct_size*/ sizeof(TintGpencilModifierData),
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/*type*/ eGpencilModifierTypeType_Gpencil,
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/*flags*/ eGpencilModifierTypeFlag_SupportsEditmode,
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/*copy_data*/ copy_data,
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/*deform_stroke*/ deform_stroke,
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/*generate_strokes*/ nullptr,
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/*bake_modifier*/ bake_modifier,
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/*remap_time*/ nullptr,
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/*init_data*/ init_data,
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/*free_data*/ free_data,
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/*is_disabled*/ is_disabled,
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/*update_depsgraph*/ update_depsgraph,
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/*depends_on_time*/ nullptr,
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/*foreach_ID_link*/ foreach_ID_link,
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/*foreach_tex_link*/ nullptr,
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/*panel_register*/ panel_register,
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};
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