1 /*************************************************************************/
2 /* cpu_particles_2d_editor_plugin.cpp */
3 /*************************************************************************/
4 /* This file is part of: */
5 /* GODOT ENGINE */
6 /* https://godotengine.org */
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8 /* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
9 /* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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13 /* "Software"), to deal in the Software without restriction, including */
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15 /* distribute, sublicense, and/or sell copies of the Software, and to */
16 /* permit persons to whom the Software is furnished to do so, subject to */
17 /* the following conditions: */
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20 /* included in all copies or substantial portions of the Software. */
21 /* */
22 /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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28 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
29 /*************************************************************************/
30
31 #include "cpu_particles_2d_editor_plugin.h"
32
33 #include "canvas_item_editor_plugin.h"
34 #include "core/io/image_loader.h"
35 #include "scene/2d/cpu_particles_2d.h"
36 #include "scene/gui/separator.h"
37 #include "scene/resources/particles_material.h"
38
edit(Object * p_object)39 void CPUParticles2DEditorPlugin::edit(Object *p_object) {
40
41 particles = Object::cast_to<CPUParticles2D>(p_object);
42 }
43
handles(Object * p_object) const44 bool CPUParticles2DEditorPlugin::handles(Object *p_object) const {
45
46 return p_object->is_class("CPUParticles2D");
47 }
48
make_visible(bool p_visible)49 void CPUParticles2DEditorPlugin::make_visible(bool p_visible) {
50
51 if (p_visible) {
52
53 toolbar->show();
54 } else {
55
56 toolbar->hide();
57 }
58 }
59
_file_selected(const String & p_file)60 void CPUParticles2DEditorPlugin::_file_selected(const String &p_file) {
61
62 source_emission_file = p_file;
63 emission_mask->popup_centered_minsize();
64 }
65
_menu_callback(int p_idx)66 void CPUParticles2DEditorPlugin::_menu_callback(int p_idx) {
67
68 switch (p_idx) {
69 case MENU_LOAD_EMISSION_MASK: {
70
71 file->popup_centered_ratio();
72
73 } break;
74 case MENU_CLEAR_EMISSION_MASK: {
75
76 emission_mask->popup_centered_minsize();
77 } break;
78 case MENU_RESTART: {
79
80 particles->restart();
81 }
82 }
83 }
84
_generate_emission_mask()85 void CPUParticles2DEditorPlugin::_generate_emission_mask() {
86
87 Ref<Image> img;
88 img.instance();
89 Error err = ImageLoader::load_image(source_emission_file, img);
90 ERR_FAIL_COND_MSG(err != OK, "Error loading image '" + source_emission_file + "'.");
91
92 if (img->is_compressed()) {
93 img->decompress();
94 }
95 img->convert(Image::FORMAT_RGBA8);
96 ERR_FAIL_COND(img->get_format() != Image::FORMAT_RGBA8);
97 Size2i s = Size2(img->get_width(), img->get_height());
98 ERR_FAIL_COND(s.width == 0 || s.height == 0);
99
100 Vector<Point2> valid_positions;
101 Vector<Point2> valid_normals;
102 Vector<uint8_t> valid_colors;
103
104 valid_positions.resize(s.width * s.height);
105
106 EmissionMode emode = (EmissionMode)emission_mask_mode->get_selected();
107
108 if (emode == EMISSION_MODE_BORDER_DIRECTED) {
109 valid_normals.resize(s.width * s.height);
110 }
111
112 bool capture_colors = emission_colors->is_pressed();
113
114 if (capture_colors) {
115 valid_colors.resize(s.width * s.height * 4);
116 }
117
118 int vpc = 0;
119
120 {
121 PoolVector<uint8_t> data = img->get_data();
122 PoolVector<uint8_t>::Read r = data.read();
123
124 for (int i = 0; i < s.width; i++) {
125 for (int j = 0; j < s.height; j++) {
126
127 uint8_t a = r[(j * s.width + i) * 4 + 3];
128
129 if (a > 128) {
130
131 if (emode == EMISSION_MODE_SOLID) {
132
133 if (capture_colors) {
134 valid_colors.write[vpc * 4 + 0] = r[(j * s.width + i) * 4 + 0];
135 valid_colors.write[vpc * 4 + 1] = r[(j * s.width + i) * 4 + 1];
136 valid_colors.write[vpc * 4 + 2] = r[(j * s.width + i) * 4 + 2];
137 valid_colors.write[vpc * 4 + 3] = r[(j * s.width + i) * 4 + 3];
138 }
139 valid_positions.write[vpc++] = Point2(i, j);
140
141 } else {
142
143 bool on_border = false;
144 for (int x = i - 1; x <= i + 1; x++) {
145 for (int y = j - 1; y <= j + 1; y++) {
146
147 if (x < 0 || y < 0 || x >= s.width || y >= s.height || r[(y * s.width + x) * 4 + 3] <= 128) {
148 on_border = true;
149 break;
150 }
151 }
152
153 if (on_border)
154 break;
155 }
156
157 if (on_border) {
158 valid_positions.write[vpc] = Point2(i, j);
159
160 if (emode == EMISSION_MODE_BORDER_DIRECTED) {
161 Vector2 normal;
162 for (int x = i - 2; x <= i + 2; x++) {
163 for (int y = j - 2; y <= j + 2; y++) {
164
165 if (x == i && y == j)
166 continue;
167
168 if (x < 0 || y < 0 || x >= s.width || y >= s.height || r[(y * s.width + x) * 4 + 3] <= 128) {
169 normal += Vector2(x - i, y - j).normalized();
170 }
171 }
172 }
173
174 normal.normalize();
175 valid_normals.write[vpc] = normal;
176 }
177
178 if (capture_colors) {
179 valid_colors.write[vpc * 4 + 0] = r[(j * s.width + i) * 4 + 0];
180 valid_colors.write[vpc * 4 + 1] = r[(j * s.width + i) * 4 + 1];
181 valid_colors.write[vpc * 4 + 2] = r[(j * s.width + i) * 4 + 2];
182 valid_colors.write[vpc * 4 + 3] = r[(j * s.width + i) * 4 + 3];
183 }
184
185 vpc++;
186 }
187 }
188 }
189 }
190 }
191 }
192
193 valid_positions.resize(vpc);
194 if (valid_normals.size()) {
195 valid_normals.resize(vpc);
196 }
197
198 ERR_FAIL_COND_MSG(valid_positions.size() == 0, "No pixels with transparency > 128 in image...");
199
200 if (capture_colors) {
201 PoolColorArray pca;
202 pca.resize(vpc);
203 PoolColorArray::Write pcaw = pca.write();
204 for (int i = 0; i < vpc; i += 1) {
205 Color color;
206 color.r = valid_colors[i * 4 + 0] / 255.0f;
207 color.g = valid_colors[i * 4 + 1] / 255.0f;
208 color.b = valid_colors[i * 4 + 2] / 255.0f;
209 color.a = valid_colors[i * 4 + 3] / 255.0f;
210 pcaw[i] = color;
211 }
212 particles->set_emission_colors(pca);
213 }
214
215 if (valid_normals.size()) {
216 particles->set_emission_shape(CPUParticles2D::EMISSION_SHAPE_DIRECTED_POINTS);
217 PoolVector2Array norms;
218 norms.resize(valid_normals.size());
219 PoolVector2Array::Write normsw = norms.write();
220 for (int i = 0; i < valid_normals.size(); i += 1) {
221 normsw[i] = valid_normals[i];
222 }
223 particles->set_emission_normals(norms);
224 } else {
225 particles->set_emission_shape(CPUParticles2D::EMISSION_SHAPE_POINTS);
226 }
227
228 {
229 PoolVector2Array points;
230 points.resize(valid_positions.size());
231 PoolVector2Array::Write pointsw = points.write();
232 for (int i = 0; i < valid_positions.size(); i += 1) {
233 pointsw[i] = valid_positions[i];
234 }
235 particles->set_emission_points(points);
236 }
237 }
238
_notification(int p_what)239 void CPUParticles2DEditorPlugin::_notification(int p_what) {
240
241 if (p_what == NOTIFICATION_ENTER_TREE) {
242
243 menu->get_popup()->connect("id_pressed", this, "_menu_callback");
244 menu->set_icon(menu->get_popup()->get_icon("Particles2D", "EditorIcons"));
245 file->connect("file_selected", this, "_file_selected");
246 }
247 }
248
_bind_methods()249 void CPUParticles2DEditorPlugin::_bind_methods() {
250
251 ClassDB::bind_method(D_METHOD("_menu_callback"), &CPUParticles2DEditorPlugin::_menu_callback);
252 ClassDB::bind_method(D_METHOD("_file_selected"), &CPUParticles2DEditorPlugin::_file_selected);
253 ClassDB::bind_method(D_METHOD("_generate_emission_mask"), &CPUParticles2DEditorPlugin::_generate_emission_mask);
254 }
255
CPUParticles2DEditorPlugin(EditorNode * p_node)256 CPUParticles2DEditorPlugin::CPUParticles2DEditorPlugin(EditorNode *p_node) {
257
258 particles = NULL;
259 editor = p_node;
260 undo_redo = editor->get_undo_redo();
261
262 toolbar = memnew(HBoxContainer);
263 add_control_to_container(CONTAINER_CANVAS_EDITOR_MENU, toolbar);
264 toolbar->hide();
265
266 toolbar->add_child(memnew(VSeparator));
267
268 menu = memnew(MenuButton);
269 menu->get_popup()->add_item(TTR("Load Emission Mask"), MENU_LOAD_EMISSION_MASK);
270 menu->get_popup()->add_separator();
271 menu->get_popup()->add_item(TTR("Restart"), MENU_RESTART);
272 // menu->get_popup()->add_item(TTR("Clear Emission Mask"), MENU_CLEAR_EMISSION_MASK);
273 menu->set_text(TTR("Particles"));
274 menu->set_switch_on_hover(true);
275 toolbar->add_child(menu);
276
277 file = memnew(EditorFileDialog);
278 List<String> ext;
279 ImageLoader::get_recognized_extensions(&ext);
280 for (List<String>::Element *E = ext.front(); E; E = E->next()) {
281 file->add_filter("*." + E->get() + "; " + E->get().to_upper());
282 }
283 file->set_mode(EditorFileDialog::MODE_OPEN_FILE);
284 toolbar->add_child(file);
285
286 epoints = memnew(SpinBox);
287 epoints->set_min(1);
288 epoints->set_max(8192);
289 epoints->set_step(1);
290 epoints->set_value(512);
291 file->get_vbox()->add_margin_child(TTR("Generated Point Count:"), epoints);
292
293 emission_mask = memnew(ConfirmationDialog);
294 emission_mask->set_title(TTR("Load Emission Mask"));
295 VBoxContainer *emvb = memnew(VBoxContainer);
296 emission_mask->add_child(emvb);
297 emission_mask_mode = memnew(OptionButton);
298 emvb->add_margin_child(TTR("Emission Mask"), emission_mask_mode);
299 emission_mask_mode->add_item(TTR("Solid Pixels"), EMISSION_MODE_SOLID);
300 emission_mask_mode->add_item(TTR("Border Pixels"), EMISSION_MODE_BORDER);
301 emission_mask_mode->add_item(TTR("Directed Border Pixels"), EMISSION_MODE_BORDER_DIRECTED);
302 emission_colors = memnew(CheckBox);
303 emission_colors->set_text(TTR("Capture from Pixel"));
304 emvb->add_margin_child(TTR("Emission Colors"), emission_colors);
305
306 toolbar->add_child(emission_mask);
307
308 emission_mask->connect("confirmed", this, "_generate_emission_mask");
309 }
310
~CPUParticles2DEditorPlugin()311 CPUParticles2DEditorPlugin::~CPUParticles2DEditorPlugin() {
312 }
313