godot/tools/editor/plugins/particles_2d_editor_plugin.cpp

199 lines
6.4 KiB
C++

/*************************************************************************/
/* particles_2d_editor_plugin.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* 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"
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_type("Particles2D");
}
void Particles2DEditorPlugin::make_visible(bool p_visible) {
if (p_visible) {
sep->show();
menu->show();
} else {
menu->hide();
sep->hide();
}
}
void Particles2DEditorPlugin::_file_selected(const String& p_file) {
print_line("file: "+p_file);
int epc=epoints->get_val();
Image img;
Error err = ImageLoader::load_image(p_file,&img);
ERR_EXPLAIN("Error loading image: "+p_file);
ERR_FAIL_COND(err!=OK);
img.convert(Image::FORMAT_GRAYSCALE_ALPHA);
ERR_FAIL_COND(img.get_format()!=Image::FORMAT_GRAYSCALE_ALPHA);
Size2i s = Size2(img.get_width(),img.get_height());
ERR_FAIL_COND(s.width==0 || s.height==0);
DVector<uint8_t> data = img.get_data();
DVector<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("No pixels with transparency > 128 in image..");
ERR_FAIL_COND(valid_positions.size()==0);
DVector<Point2> epoints;
epoints.resize(epc);
DVector<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 = DVector<Point2>::Write();
undo_redo->create_action("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("Clear Emission Mask");
undo_redo->add_do_method(particles,"set_emission_points",DVector<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_SCENE) {
menu->get_popup()->connect("item_pressed",this,"_menu_callback");
file->connect("file_selected",this,"_file_selected");
}
}
void Particles2DEditorPlugin::_bind_methods() {
ObjectTypeDB::bind_method(_MD("_menu_callback"),&Particles2DEditorPlugin::_menu_callback);
ObjectTypeDB::bind_method(_MD("_file_selected"),&Particles2DEditorPlugin::_file_selected);
}
Particles2DEditorPlugin::Particles2DEditorPlugin(EditorNode *p_node) {
particles=NULL;
editor=p_node;
undo_redo=editor->get_undo_redo();
sep = memnew( VSeparator );
CanvasItemEditor::get_singleton()->add_control_to_menu_panel(sep);
sep->hide();
menu = memnew( MenuButton );
menu->get_popup()->add_item("Load Emission Mask",MENU_LOAD_EMISSION_MASK);
menu->get_popup()->add_item("Clear Emission Mask",MENU_CLEAR_EMISSION_MASK);
menu->set_text("Particles");
file = memnew(FileDialog);
add_child(file);
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(FileDialog::MODE_OPEN_FILE);
CanvasItemEditor::get_singleton()->add_control_to_menu_panel(menu);
epoints = memnew( SpinBox );
epoints->set_min(1);
epoints->set_max(8192);
epoints->set_step(1);
epoints->set_val(512);
file->get_vbox()->add_margin_child("Generated Point Count:",epoints);
menu->hide();
}
Particles2DEditorPlugin::~Particles2DEditorPlugin()
{
}