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+/*************************************************************************/
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+/* cpu_particles_2d_editor_plugin.cpp */
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+/*************************************************************************/
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+/* This file is part of: */
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+/* GODOT ENGINE */
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+/* https://godotengine.org */
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+/*************************************************************************/
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+/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
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+/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
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+/* */
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+/* Permission is hereby granted, free of charge, to any person obtaining */
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+/* a copy of this software and associated documentation files (the */
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+/* "Software"), to deal in the Software without restriction, including */
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+/* without limitation the rights to use, copy, modify, merge, publish, */
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+/* distribute, sublicense, and/or sell copies of the Software, and to */
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+/* permit persons to whom the Software is furnished to do so, subject to */
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+/* the following conditions: */
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+/* */
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+/* The above copyright notice and this permission notice shall be */
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+/* included in all copies or substantial portions of the Software. */
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+/* */
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+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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+/*************************************************************************/
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+
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+#include "cpu_particles_2d_editor_plugin.h"
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+
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+#include "canvas_item_editor_plugin.h"
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+#include "core/io/image_loader.h"
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+#include "scene/2d/cpu_particles_2d.h"
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+#include "scene/gui/separator.h"
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+#include "scene/resources/particles_material.h"
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+
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+void CPUParticles2DEditorPlugin::edit(Object *p_object) {
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+
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+ particles = Object::cast_to<CPUParticles2D>(p_object);
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+}
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+
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+bool CPUParticles2DEditorPlugin::handles(Object *p_object) const {
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+
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+ return p_object->is_class("CPUParticles2D");
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+}
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+
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+void CPUParticles2DEditorPlugin::make_visible(bool p_visible) {
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+
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+ if (p_visible) {
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+
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+ toolbar->show();
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+ } else {
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+
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+ toolbar->hide();
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+ }
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+}
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+
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+void CPUParticles2DEditorPlugin::_file_selected(const String &p_file) {
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+
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+ source_emission_file = p_file;
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+ emission_mask->popup_centered_minsize();
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+}
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+
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+void CPUParticles2DEditorPlugin::_menu_callback(int p_idx) {
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+
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+ switch (p_idx) {
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+ case MENU_LOAD_EMISSION_MASK: {
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+
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+ file->popup_centered_ratio();
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+
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+ } break;
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+ case MENU_CLEAR_EMISSION_MASK: {
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+
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+ emission_mask->popup_centered_minsize();
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+ } break;
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+ }
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+}
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+
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+void CPUParticles2DEditorPlugin::_generate_emission_mask() {
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+
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+ Ref<Image> img;
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+ img.instance();
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+ Error err = ImageLoader::load_image(source_emission_file, img);
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+ ERR_EXPLAIN(TTR("Error loading image:") + " " + source_emission_file);
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+ ERR_FAIL_COND(err != OK);
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+
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+ if (img->is_compressed()) {
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+ img->decompress();
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+ }
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+ img->convert(Image::FORMAT_RGBA8);
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+ ERR_FAIL_COND(img->get_format() != Image::FORMAT_RGBA8);
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+ Size2i s = Size2(img->get_width(), img->get_height());
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+ ERR_FAIL_COND(s.width == 0 || s.height == 0);
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+
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+ Vector<Point2> valid_positions;
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+ Vector<Point2> valid_normals;
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+ Vector<uint8_t> valid_colors;
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+
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+ valid_positions.resize(s.width * s.height);
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+
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+ EmissionMode emode = (EmissionMode)emission_mask_mode->get_selected();
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+
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+ if (emode == EMISSION_MODE_BORDER_DIRECTED) {
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+ valid_normals.resize(s.width * s.height);
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+ }
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+
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+ bool capture_colors = emission_colors->is_pressed();
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+
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+ if (capture_colors) {
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+ valid_colors.resize(s.width * s.height * 4);
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+ }
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+
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+ int vpc = 0;
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+
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+ {
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+ PoolVector<uint8_t> data = img->get_data();
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+ PoolVector<uint8_t>::Read r = data.read();
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+
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+ for (int i = 0; i < s.width; i++) {
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+ for (int j = 0; j < s.height; j++) {
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+
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+ uint8_t a = r[(j * s.width + i) * 4 + 3];
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+
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+ if (a > 128) {
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+
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+ if (emode == EMISSION_MODE_SOLID) {
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+
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+ if (capture_colors) {
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+ valid_colors.write[vpc * 4 + 0] = r[(j * s.width + i) * 4 + 0];
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+ valid_colors.write[vpc * 4 + 1] = r[(j * s.width + i) * 4 + 1];
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+ valid_colors.write[vpc * 4 + 2] = r[(j * s.width + i) * 4 + 2];
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+ valid_colors.write[vpc * 4 + 3] = r[(j * s.width + i) * 4 + 3];
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+ }
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+ valid_positions.write[vpc++] = Point2(i, j);
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+
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+ } else {
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+
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+ bool on_border = false;
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+ for (int x = i - 1; x <= i + 1; x++) {
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+ for (int y = j - 1; y <= j + 1; y++) {
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+
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+ if (x < 0 || y < 0 || x >= s.width || y >= s.height || r[(y * s.width + x) * 4 + 3] <= 128) {
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+ on_border = true;
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+ break;
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+ }
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+ }
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+
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+ if (on_border)
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+ break;
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+ }
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+
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+ if (on_border) {
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+ valid_positions.write[vpc] = Point2(i, j);
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+
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+ if (emode == EMISSION_MODE_BORDER_DIRECTED) {
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+ Vector2 normal;
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+ for (int x = i - 2; x <= i + 2; x++) {
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+ for (int y = j - 2; y <= j + 2; y++) {
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+
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+ if (x == i && y == j)
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+ continue;
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+
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+ if (x < 0 || y < 0 || x >= s.width || y >= s.height || r[(y * s.width + x) * 4 + 3] <= 128) {
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+ normal += Vector2(x - i, y - j).normalized();
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+ }
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+ }
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+ }
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+
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+ normal.normalize();
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+ valid_normals.write[vpc] = normal;
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+ }
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+
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+ if (capture_colors) {
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+ valid_colors.write[vpc * 4 + 0] = r[(j * s.width + i) * 4 + 0];
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+ valid_colors.write[vpc * 4 + 1] = r[(j * s.width + i) * 4 + 1];
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+ valid_colors.write[vpc * 4 + 2] = r[(j * s.width + i) * 4 + 2];
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+ valid_colors.write[vpc * 4 + 3] = r[(j * s.width + i) * 4 + 3];
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+ }
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+
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+ vpc++;
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+ }
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+ }
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+ }
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+ }
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+ }
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+ }
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+
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+ valid_positions.resize(vpc);
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+ if (valid_normals.size()) {
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+ valid_normals.resize(vpc);
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+ }
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+
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+ ERR_EXPLAIN(TTR("No pixels with transparency > 128 in image..."));
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+ ERR_FAIL_COND(valid_positions.size() == 0);
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+
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+ if (capture_colors) {
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+ PoolColorArray pca;
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+ pca.resize(vpc);
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+ PoolColorArray::Write pcaw = pca.write();
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+ for (int i = 0; i < vpc; i += 1) {
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+ Color color;
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+ color.r = valid_colors[i * 4 + 0] / 255.0f;
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+ color.g = valid_colors[i * 4 + 1] / 255.0f;
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+ color.b = valid_colors[i * 4 + 2] / 255.0f;
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+ color.a = valid_colors[i * 4 + 3] / 255.0f;
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+ pcaw[i] = color;
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+ }
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+ particles->set_emission_colors(pca);
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+ }
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+
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+ if (valid_normals.size()) {
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+ particles->set_emission_shape(CPUParticles2D::EMISSION_SHAPE_DIRECTED_POINTS);
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+ PoolVector2Array norms;
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+ norms.resize(valid_normals.size());
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+ PoolVector2Array::Write normsw = norms.write();
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+ for (int i = 0; i < valid_normals.size(); i += 1) {
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+ normsw[i] = valid_normals[i];
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+ }
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+ particles->set_emission_normals(norms);
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+ } else {
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+ particles->set_emission_shape(CPUParticles2D::EMISSION_SHAPE_POINTS);
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+ }
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+
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+ {
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+ PoolVector2Array points;
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+ points.resize(valid_positions.size());
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+ PoolVector2Array::Write pointsw = points.write();
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+ for (int i = 0; i < valid_positions.size(); i += 1) {
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+ pointsw[i] = valid_positions[i];
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+ }
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+ particles->set_emission_points(points);
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+ }
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+}
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+
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+void CPUParticles2DEditorPlugin::_notification(int p_what) {
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+
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+ if (p_what == NOTIFICATION_ENTER_TREE) {
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+
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+ menu->get_popup()->connect("id_pressed", this, "_menu_callback");
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+ menu->set_icon(menu->get_popup()->get_icon("Particles2D", "EditorIcons"));
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+ file->connect("file_selected", this, "_file_selected");
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+ }
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+}
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+
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+void CPUParticles2DEditorPlugin::_bind_methods() {
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+
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+ ClassDB::bind_method(D_METHOD("_menu_callback"), &CPUParticles2DEditorPlugin::_menu_callback);
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+ ClassDB::bind_method(D_METHOD("_file_selected"), &CPUParticles2DEditorPlugin::_file_selected);
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+ ClassDB::bind_method(D_METHOD("_generate_emission_mask"), &CPUParticles2DEditorPlugin::_generate_emission_mask);
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+}
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+
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+CPUParticles2DEditorPlugin::CPUParticles2DEditorPlugin(EditorNode *p_node) {
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+
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+ particles = NULL;
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+ editor = p_node;
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+ undo_redo = editor->get_undo_redo();
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+
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+ toolbar = memnew(HBoxContainer);
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+ add_control_to_container(CONTAINER_CANVAS_EDITOR_MENU, toolbar);
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+ toolbar->hide();
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+
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+ toolbar->add_child(memnew(VSeparator));
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+
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+ menu = memnew(MenuButton);
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+ menu->get_popup()->add_item(TTR("Load Emission Mask"), MENU_LOAD_EMISSION_MASK);
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+ // menu->get_popup()->add_item(TTR("Clear Emission Mask"), MENU_CLEAR_EMISSION_MASK);
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+ menu->set_text(TTR("Particles"));
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+ toolbar->add_child(menu);
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+
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+ file = memnew(EditorFileDialog);
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+ List<String> ext;
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+ ImageLoader::get_recognized_extensions(&ext);
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+ for (List<String>::Element *E = ext.front(); E; E = E->next()) {
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+ file->add_filter("*." + E->get() + "; " + E->get().to_upper());
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+ }
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+ file->set_mode(EditorFileDialog::MODE_OPEN_FILE);
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+ toolbar->add_child(file);
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+
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+ epoints = memnew(SpinBox);
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+ epoints->set_min(1);
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+ epoints->set_max(8192);
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+ epoints->set_step(1);
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+ epoints->set_value(512);
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+ file->get_vbox()->add_margin_child(TTR("Generated Point Count:"), epoints);
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+
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+ emission_mask = memnew(ConfirmationDialog);
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+ emission_mask->set_title(TTR("Load Emission Mask"));
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+ VBoxContainer *emvb = memnew(VBoxContainer);
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+ emission_mask->add_child(emvb);
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+ emission_mask_mode = memnew(OptionButton);
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+ emvb->add_margin_child(TTR("Emission Mask"), emission_mask_mode);
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+ emission_mask_mode->add_item("Solid Pixels", EMISSION_MODE_SOLID);
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+ emission_mask_mode->add_item("Border Pixels", EMISSION_MODE_BORDER);
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+ emission_mask_mode->add_item("Directed Border Pixels", EMISSION_MODE_BORDER_DIRECTED);
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+ emission_colors = memnew(CheckBox);
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+ emission_colors->set_text(TTR("Capture from Pixel"));
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+ emvb->add_margin_child(TTR("Emission Colors"), emission_colors);
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+
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+ toolbar->add_child(emission_mask);
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+
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+ emission_mask->connect("confirmed", this, "_generate_emission_mask");
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+}
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+
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+CPUParticles2DEditorPlugin::~CPUParticles2DEditorPlugin() {
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+}
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Rémi Verschelde