1/**************************************************************************/
2/* circle_shape_2d.cpp */
3/**************************************************************************/
4/* This file is part of: */
5/* GODOT ENGINE */
6/* https://godotengine.org */
7/**************************************************************************/
8/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
9/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
10/* */
11/* Permission is hereby granted, free of charge, to any person obtaining */
12/* a copy of this software and associated documentation files (the */
13/* "Software"), to deal in the Software without restriction, including */
14/* without limitation the rights to use, copy, modify, merge, publish, */
15/* distribute, sublicense, and/or sell copies of the Software, and to */
16/* permit persons to whom the Software is furnished to do so, subject to */
17/* the following conditions: */
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19/* The above copyright notice and this permission notice shall be */
20/* included in all copies or substantial portions of the Software. */
21/* */
22/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
23/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
24/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
25/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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27/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
28/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
29/**************************************************************************/
30
31#include "circle_shape_2d.h"
32
33#include "servers/physics_server_2d.h"
34#include "servers/rendering_server.h"
35
36bool CircleShape2D::_edit_is_selected_on_click(const Point2 &p_point, double p_tolerance) const {
37 return p_point.length() < get_radius() + p_tolerance;
38}
39
40void CircleShape2D::_update_shape() {
41 PhysicsServer2D::get_singleton()->shape_set_data(get_rid(), radius);
42 emit_changed();
43}
44
45void CircleShape2D::set_radius(real_t p_radius) {
46 ERR_FAIL_COND_MSG(p_radius < 0, "CircleShape2D radius cannot be negative.");
47 radius = p_radius;
48 _update_shape();
49}
50
51real_t CircleShape2D::get_radius() const {
52 return radius;
53}
54
55void CircleShape2D::_bind_methods() {
56 ClassDB::bind_method(D_METHOD("set_radius", "radius"), &CircleShape2D::set_radius);
57 ClassDB::bind_method(D_METHOD("get_radius"), &CircleShape2D::get_radius);
58
59 ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "radius", PROPERTY_HINT_RANGE, "0.01,1024,0.01,or_greater,suffix:px"), "set_radius", "get_radius");
60}
61
62Rect2 CircleShape2D::get_rect() const {
63 Rect2 rect;
64 rect.position = -Point2(get_radius(), get_radius());
65 rect.size = Point2(get_radius(), get_radius()) * 2.0;
66 return rect;
67}
68
69real_t CircleShape2D::get_enclosing_radius() const {
70 return radius;
71}
72
73void CircleShape2D::draw(const RID &p_to_rid, const Color &p_color) {
74 Vector<Vector2> points;
75 points.resize(24);
76
77 const real_t turn_step = Math_TAU / 24.0;
78 for (int i = 0; i < 24; i++) {
79 points.write[i] = Vector2(Math::cos(i * turn_step), Math::sin(i * turn_step)) * get_radius();
80 }
81
82 Vector<Color> col = { p_color };
83 RenderingServer::get_singleton()->canvas_item_add_polygon(p_to_rid, points, col);
84
85 if (is_collision_outline_enabled()) {
86 points.push_back(points[0]);
87 col = { Color(p_color, 1.0) };
88 RenderingServer::get_singleton()->canvas_item_add_polyline(p_to_rid, points, col);
89 }
90}
91
92CircleShape2D::CircleShape2D() :
93 Shape2D(PhysicsServer2D::get_singleton()->circle_shape_create()) {
94 _update_shape();
95}
96