godot/editor/plugins/particles_2d_editor_plugin.cpp

192 lines
6.5 KiB
C++

/*************************************************************************/
/* particles_2d_editor_plugin.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2017 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 "io/image_loader.h"
#include "scene/gui/separator.h"
void Particles2DEditorPlugin::edit(Object *p_object) {
if (p_object) {
particles = p_object->cast_to<Particles2D>();
} else {
particles = NULL;
}
}
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) {
print_line("file: " + p_file);
int epc = epoints->get_value();
Ref<Image> img;
img.instance();
Error err = ImageLoader::load_image(p_file, img);
ERR_EXPLAIN(TTR("Error loading image:") + " " + p_file);
ERR_FAIL_COND(err != OK);
img->convert(Image::FORMAT_LA8);
ERR_FAIL_COND(img->get_format() != Image::FORMAT_LA8);
Size2i s = Size2(img->get_width(), img->get_height());
ERR_FAIL_COND(s.width == 0 || s.height == 0);
PoolVector<uint8_t> data = img->get_data();
PoolVector<uint8_t>::Read r = data.read();
Vector<Point2i> valid_positions;
valid_positions.resize(s.width * s.height);
int vpc = 0;
for (int i = 0; i < s.width * s.height; i++) {
uint8_t a = r[i * 2 + 1];
if (a > 128) {
valid_positions[vpc++] = Point2i(i % s.width, i / s.width);
}
}
valid_positions.resize(vpc);
ERR_EXPLAIN(TTR("No pixels with transparency > 128 in image.."));
ERR_FAIL_COND(valid_positions.size() == 0);
PoolVector<Point2> epoints;
epoints.resize(epc);
PoolVector<Point2>::Write w = epoints.write();
Size2 extents = Size2(img->get_width() * 0.5, img->get_height() * 0.5);
for (int i = 0; i < epc; i++) {
Point2 p = valid_positions[Math::rand() % vpc];
p -= s / 2;
w[i] = p / extents;
}
w = PoolVector<Point2>::Write();
undo_redo->create_action(TTR("Set Emission Mask"));
undo_redo->add_do_method(particles, "set_emission_points", epoints);
undo_redo->add_do_method(particles, "set_emission_half_extents", extents);
undo_redo->add_undo_method(particles, "set_emission_points", particles->get_emission_points());
undo_redo->add_undo_method(particles, "set_emission_half_extents", particles->get_emission_half_extents());
undo_redo->commit_action();
}
void Particles2DEditorPlugin::_menu_callback(int p_idx) {
switch (p_idx) {
case MENU_LOAD_EMISSION_MASK: {
file->popup_centered_ratio();
} break;
case MENU_CLEAR_EMISSION_MASK: {
undo_redo->create_action(TTR("Clear Emission Mask"));
undo_redo->add_do_method(particles, "set_emission_points", PoolVector<Vector2>());
undo_redo->add_undo_method(particles, "set_emission_points", particles->get_emission_points());
undo_redo->commit_action();
} break;
}
}
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);
}
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("Load Emission Mask"), MENU_LOAD_EMISSION_MASK);
menu->get_popup()->add_item(TTR("Clear Emission Mask"), MENU_CLEAR_EMISSION_MASK);
menu->set_text("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);
}
Particles2DEditorPlugin::~Particles2DEditorPlugin() {
}