godot/scene/resources/rectangle_shape_2d.cpp

/**************************************************************************/
/*  rectangle_shape_2d.cpp                                                */
/**************************************************************************/
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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#include "rectangle_shape_2d.h"

#include "servers/physics_2d_server.h"
#include "servers/visual_server.h"
void RectangleShape2D::_update_shape() {
	Physics2DServer::get_singleton()->shape_set_data(get_rid(), extents);
	emit_changed();
}

void RectangleShape2D::set_extents(const Vector2 &p_extents) {
	extents = p_extents;
	_update_shape();
}

Vector2 RectangleShape2D::get_extents() const {
	return extents;
}

void RectangleShape2D::draw(const RID &p_to_rid, const Color &p_color) {
	VisualServer::get_singleton()->canvas_item_add_rect(p_to_rid, Rect2(-extents, extents * 2.0), p_color);
	if (is_collision_outline_enabled()) {
		// Draw an outlined rectangle to make individual shapes easier to distinguish.
		Vector<Vector2> stroke_points;
		stroke_points.resize(5);
		stroke_points.write[0] = -extents;
		stroke_points.write[1] = Vector2(extents.x, -extents.y);
		stroke_points.write[2] = extents;
		stroke_points.write[3] = Vector2(-extents.x, extents.y);
		stroke_points.write[4] = -extents;

		Vector<Color> stroke_colors;
		stroke_colors.resize(5);
		for (int i = 0; i < 5; i++) {
			stroke_colors.write[i] = p_color;
		}

		VisualServer::get_singleton()->canvas_item_add_polyline(p_to_rid, stroke_points, stroke_colors, 1.0, true);
	}
}

Rect2 RectangleShape2D::get_rect() const {
	return Rect2(-extents, extents * 2.0);
}

real_t RectangleShape2D::get_enclosing_radius() const {
	return extents.length();
}

void RectangleShape2D::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_extents", "extents"), &RectangleShape2D::set_extents);
	ClassDB::bind_method(D_METHOD("get_extents"), &RectangleShape2D::get_extents);

	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "extents"), "set_extents", "get_extents");
}

RectangleShape2D::RectangleShape2D() :
		Shape2D(Physics2DServer::get_singleton()->rectangle_shape_create()) {
	extents = Vector2(10, 10);
	_update_shape();
}