godot/scene/2d/path_2d.cpp

93 lines
3.4 KiB
C++

/*************************************************************************/
/* path_2d.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 "path_2d.h"
void Path2D::_notification(int p_what) {
if (p_what==NOTIFICATION_DRAW && curve.is_valid() && is_inside_scene() && get_scene()->is_editor_hint()) {
//draw the curve!!
for(int i=0;i<curve->get_point_count();i++) {
Vector2 prev_p=curve->get_point_pos(i);
for(int j=1;j<=8;j++) {
real_t frac = j/8.0;
Vector2 p = curve->interpolate(i,frac);
draw_line(prev_p,p,Color(0.5,0.6,1.0,0.7),2);
prev_p=p;
}
}
}
}
void Path2D::_curve_changed() {
if (is_inside_scene() && get_scene()->is_editor_hint())
update();
}
void Path2D::set_curve(const Ref<Curve2D>& p_curve) {
if (curve.is_valid()) {
curve->disconnect("changed",this,"_curve_changed");
}
curve=p_curve;
if (curve.is_valid()) {
curve->connect("changed",this,"_curve_changed");
}
}
Ref<Curve2D> Path2D::get_curve() const{
return curve;
}
void Path2D::_bind_methods() {
ObjectTypeDB::bind_method(_MD("set_curve","curve:Curve2D"),&Path2D::set_curve);
ObjectTypeDB::bind_method(_MD("get_curve:Curve2D","curve"),&Path2D::get_curve);
ObjectTypeDB::bind_method(_MD("_curve_changed"),&Path2D::_curve_changed);
ADD_PROPERTY( PropertyInfo( Variant::OBJECT, "curve", PROPERTY_HINT_RESOURCE_TYPE, "Curve2D"), _SCS("set_curve"),_SCS("get_curve"));
}
Path2D::Path2D() {
set_curve(Ref<Curve2D>( memnew( Curve2D ))); //create one by default
}