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godot/editor/plugins/particles_2d_editor_plugin.cpp

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/*************************************************************************/
/* particles_2d_editor_plugin.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "particles_2d_editor_plugin.h"
#include "canvas_item_editor_plugin.h"
#include "core/io/image_loader.h"
#include "scene/gui/separator.h"
#include "scene/resources/particles_material.h"
void Particles2DEditorPlugin::edit(Object *p_object) {
particles = Object::cast_to<Particles2D>(p_object);
}
bool Particles2DEditorPlugin::handles(Object *p_object) const {
return p_object->is_class("Particles2D");
}
void Particles2DEditorPlugin::make_visible(bool p_visible) {
if (p_visible) {
toolbar->show();
} else {
toolbar->hide();
}
}
void Particles2DEditorPlugin::_file_selected(const String &p_file) {
source_emission_file = p_file;
emission_mask->popup_centered_minsize();
}
void Particles2DEditorPlugin::_menu_callback(int p_idx) {
switch (p_idx) {
case MENU_GENERATE_VISIBILITY_RECT: {
float gen_time = particles->get_lifetime();
if (gen_time < 1.0)
generate_seconds->set_value(1.0);
else
generate_seconds->set_value(trunc(gen_time) + 1.0);
generate_visibility_rect->popup_centered_minsize();
} break;
case MENU_LOAD_EMISSION_MASK: {
file->popup_centered_ratio();
} break;
case MENU_CLEAR_EMISSION_MASK: {
emission_mask->popup_centered_minsize();
} break;
}
}
void Particles2DEditorPlugin::_generate_visibility_rect() {
float time = generate_seconds->get_value();
float running = 0.0;
EditorProgress ep("gen_vrect", TTR("Generating Visibility Rect"), int(time));
bool was_emitting = particles->is_emitting();
if (!was_emitting) {
particles->set_emitting(true);
OS::get_singleton()->delay_usec(1000);
}
Rect2 rect;
while (running < time) {
uint64_t ticks = OS::get_singleton()->get_ticks_usec();
ep.step("Generating...", int(running), true);
OS::get_singleton()->delay_usec(1000);
Rect2 capture = particles->capture_rect();
if (rect == Rect2())
rect = capture;
else
rect = rect.merge(capture);
running += (OS::get_singleton()->get_ticks_usec() - ticks) / 1000000.0;
}
if (!was_emitting) {
particles->set_emitting(false);
}
particles->set_visibility_rect(rect);
}
void Particles2DEditorPlugin::_generate_emission_mask() {
Ref<ParticlesMaterial> pm = particles->get_process_material();
if (!pm.is_valid()) {
EditorNode::get_singleton()->show_warning(TTR("Can only set point into a ParticlesMaterial process material"));
return;
}
Ref<Image> img;
img.instance();
Error err = ImageLoader::load_image(source_emission_file, img);
ERR_EXPLAIN(TTR("Error loading image:") + " " + source_emission_file);
ERR_FAIL_COND(err != OK);
if (img->is_compressed()) {
img->decompress();
}
img->convert(Image::FORMAT_RGBA8);
ERR_FAIL_COND(img->get_format() != Image::FORMAT_RGBA8);
Size2i s = Size2(img->get_width(), img->get_height());
ERR_FAIL_COND(s.width == 0 || s.height == 0);
Vector<Point2> valid_positions;
Vector<Point2> valid_normals;
Vector<uint8_t> valid_colors;
valid_positions.resize(s.width * s.height);
EmissionMode emode = (EmissionMode)emission_mask_mode->get_selected();
if (emode == EMISSION_MODE_BORDER_DIRECTED) {
valid_normals.resize(s.width * s.height);
}
bool capture_colors = emission_colors->is_pressed();
if (capture_colors) {
valid_colors.resize(s.width * s.height * 4);
}
int vpc = 0;
{
PoolVector<uint8_t> data = img->get_data();
PoolVector<uint8_t>::Read r = data.read();
for (int i = 0; i < s.width; i++) {
for (int j = 0; j < s.height; j++) {
uint8_t a = r[(j * s.width + i) * 4 + 3];
if (a > 128) {
if (emode == EMISSION_MODE_SOLID) {
if (capture_colors) {
valid_colors.write[vpc * 4 + 0] = r[(j * s.width + i) * 4 + 0];
valid_colors.write[vpc * 4 + 1] = r[(j * s.width + i) * 4 + 1];
valid_colors.write[vpc * 4 + 2] = r[(j * s.width + i) * 4 + 2];
valid_colors.write[vpc * 4 + 3] = r[(j * s.width + i) * 4 + 3];
}
valid_positions.write[vpc++] = Point2(i, j);
} else {
bool on_border = false;
for (int x = i - 1; x <= i + 1; x++) {
for (int y = j - 1; y <= j + 1; y++) {
if (x < 0 || y < 0 || x >= s.width || y >= s.height || r[(y * s.width + x) * 4 + 3] <= 128) {
on_border = true;
break;
}
}
if (on_border)
break;
}
if (on_border) {
valid_positions.write[vpc] = Point2(i, j);
if (emode == EMISSION_MODE_BORDER_DIRECTED) {
Vector2 normal;
for (int x = i - 2; x <= i + 2; x++) {
for (int y = j - 2; y <= j + 2; y++) {
if (x == i && y == j)
continue;
if (x < 0 || y < 0 || x >= s.width || y >= s.height || r[(y * s.width + x) * 4 + 3] <= 128) {
normal += Vector2(x - i, y - j).normalized();
}
}
}
normal.normalize();
valid_normals.write[vpc] = normal;
}
if (capture_colors) {
valid_colors.write[vpc * 4 + 0] = r[(j * s.width + i) * 4 + 0];
valid_colors.write[vpc * 4 + 1] = r[(j * s.width + i) * 4 + 1];
valid_colors.write[vpc * 4 + 2] = r[(j * s.width + i) * 4 + 2];
valid_colors.write[vpc * 4 + 3] = r[(j * s.width + i) * 4 + 3];
}
vpc++;
}
}
}
}
}
}
valid_positions.resize(vpc);
if (valid_normals.size()) {
valid_normals.resize(vpc);
}
ERR_EXPLAIN(TTR("No pixels with transparency > 128 in image..."));
ERR_FAIL_COND(valid_positions.size() == 0);
PoolVector<uint8_t> texdata;
int w = 2048;
int h = (vpc / 2048) + 1;
texdata.resize(w * h * 2 * sizeof(float));
{
PoolVector<uint8_t>::Write tw = texdata.write();
float *twf = (float *)tw.ptr();
for (int i = 0; i < vpc; i++) {
twf[i * 2 + 0] = valid_positions[i].x;
twf[i * 2 + 1] = valid_positions[i].y;
}
}
img.instance();
img->create(w, h, false, Image::FORMAT_RGF, texdata);
Ref<ImageTexture> imgt;
imgt.instance();
imgt->create_from_image(img, 0);
pm->set_emission_point_texture(imgt);
pm->set_emission_point_count(vpc);
if (capture_colors) {
PoolVector<uint8_t> colordata;
colordata.resize(w * h * 4); //use RG texture
{
PoolVector<uint8_t>::Write tw = colordata.write();
for (int i = 0; i < vpc * 4; i++) {
tw[i] = valid_colors[i];
}
}
img.instance();
img->create(w, h, false, Image::FORMAT_RGBA8, colordata);
imgt.instance();
imgt->create_from_image(img, 0);
pm->set_emission_color_texture(imgt);
}
if (valid_normals.size()) {
pm->set_emission_shape(ParticlesMaterial::EMISSION_SHAPE_DIRECTED_POINTS);
PoolVector<uint8_t> normdata;
normdata.resize(w * h * 2 * sizeof(float)); //use RG texture
{
PoolVector<uint8_t>::Write tw = normdata.write();
float *twf = (float *)tw.ptr();
for (int i = 0; i < vpc; i++) {
twf[i * 2 + 0] = valid_normals[i].x;
twf[i * 2 + 1] = valid_normals[i].y;
}
}
img.instance();
img->create(w, h, false, Image::FORMAT_RGF, normdata);
imgt.instance();
imgt->create_from_image(img, 0);
pm->set_emission_normal_texture(imgt);
} else {
pm->set_emission_shape(ParticlesMaterial::EMISSION_SHAPE_POINTS);
}
}
void Particles2DEditorPlugin::_notification(int p_what) {
if (p_what == NOTIFICATION_ENTER_TREE) {
menu->get_popup()->connect("id_pressed", this, "_menu_callback");
menu->set_icon(menu->get_popup()->get_icon("Particles2D", "EditorIcons"));
file->connect("file_selected", this, "_file_selected");
}
}
void Particles2DEditorPlugin::_bind_methods() {
ClassDB::bind_method(D_METHOD("_menu_callback"), &Particles2DEditorPlugin::_menu_callback);
ClassDB::bind_method(D_METHOD("_file_selected"), &Particles2DEditorPlugin::_file_selected);
ClassDB::bind_method(D_METHOD("_generate_visibility_rect"), &Particles2DEditorPlugin::_generate_visibility_rect);
ClassDB::bind_method(D_METHOD("_generate_emission_mask"), &Particles2DEditorPlugin::_generate_emission_mask);
}
Particles2DEditorPlugin::Particles2DEditorPlugin(EditorNode *p_node) {
particles = NULL;
editor = p_node;
undo_redo = editor->get_undo_redo();
toolbar = memnew(HBoxContainer);
add_control_to_container(CONTAINER_CANVAS_EDITOR_MENU, toolbar);
toolbar->hide();
toolbar->add_child(memnew(VSeparator));
menu = memnew(MenuButton);
menu->get_popup()->add_item(TTR("Generate Visibility Rect"), MENU_GENERATE_VISIBILITY_RECT);
menu->get_popup()->add_separator();
menu->get_popup()->add_item(TTR("Load Emission Mask"), MENU_LOAD_EMISSION_MASK);
// menu->get_popup()->add_item(TTR("Clear Emission Mask"), MENU_CLEAR_EMISSION_MASK);
menu->set_text(TTR("Particles"));
toolbar->add_child(menu);
file = memnew(EditorFileDialog);
List<String> ext;
ImageLoader::get_recognized_extensions(&ext);
for (List<String>::Element *E = ext.front(); E; E = E->next()) {
file->add_filter("*." + E->get() + "; " + E->get().to_upper());
}
file->set_mode(EditorFileDialog::MODE_OPEN_FILE);
toolbar->add_child(file);
epoints = memnew(SpinBox);
epoints->set_min(1);
epoints->set_max(8192);
epoints->set_step(1);
epoints->set_value(512);
file->get_vbox()->add_margin_child(TTR("Generated Point Count:"), epoints);
generate_visibility_rect = memnew(ConfirmationDialog);
generate_visibility_rect->set_title(TTR("Generate Visibility Rect"));
VBoxContainer *genvb = memnew(VBoxContainer);
generate_visibility_rect->add_child(genvb);
generate_seconds = memnew(SpinBox);
genvb->add_margin_child(TTR("Generation Time (sec):"), generate_seconds);
generate_seconds->set_min(0.1);
generate_seconds->set_max(25);
generate_seconds->set_value(2);
toolbar->add_child(generate_visibility_rect);
generate_visibility_rect->connect("confirmed", this, "_generate_visibility_rect");
emission_mask = memnew(ConfirmationDialog);
emission_mask->set_title(TTR("Generate Visibility Rect"));
VBoxContainer *emvb = memnew(VBoxContainer);
emission_mask->add_child(emvb);
emission_mask_mode = memnew(OptionButton);
emvb->add_margin_child(TTR("Emission Mask"), emission_mask_mode);
emission_mask_mode->add_item("Solid Pixels", EMISSION_MODE_SOLID);
emission_mask_mode->add_item("Border Pixels", EMISSION_MODE_BORDER);
emission_mask_mode->add_item("Directed Border Pixels", EMISSION_MODE_BORDER_DIRECTED);
emission_colors = memnew(CheckBox);
emission_colors->set_text(TTR("Capture from Pixel"));
emvb->add_margin_child(TTR("Emission Colors"), emission_colors);
toolbar->add_child(emission_mask);
emission_mask->connect("confirmed", this, "_generate_emission_mask");
}
Particles2DEditorPlugin::~Particles2DEditorPlugin() {
}
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