1/**************************************************************************/
2/* capsule_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 */
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17/* the following conditions: */
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21/* */
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29/**************************************************************************/
30
31#include "capsule_shape_2d.h"
32
33#include "core/math/geometry_2d.h"
34#include "servers/physics_server_2d.h"
35#include "servers/rendering_server.h"
36
37Vector<Vector2> CapsuleShape2D::_get_points() const {
38 Vector<Vector2> points;
39 const real_t turn_step = Math_TAU / 24.0;
40 for (int i = 0; i < 24; i++) {
41 Vector2 ofs = Vector2(0, (i > 6 && i <= 18) ? -height * 0.5 + radius : height * 0.5 - radius);
42
43 points.push_back(Vector2(Math::sin(i * turn_step), Math::cos(i * turn_step)) * radius + ofs);
44 if (i == 6 || i == 18) {
45 points.push_back(Vector2(Math::sin(i * turn_step), Math::cos(i * turn_step)) * radius - ofs);
46 }
47 }
48
49 return points;
50}
51
52bool CapsuleShape2D::_edit_is_selected_on_click(const Point2 &p_point, double p_tolerance) const {
53 return Geometry2D::is_point_in_polygon(p_point, _get_points());
54}
55
56void CapsuleShape2D::_update_shape() {
57 PhysicsServer2D::get_singleton()->shape_set_data(get_rid(), Vector2(radius, height));
58 emit_changed();
59}
60
61void CapsuleShape2D::set_radius(real_t p_radius) {
62 ERR_FAIL_COND_MSG(p_radius < 0, "CapsuleShape2D radius cannot be negative.");
63 radius = p_radius;
64 if (radius > height * 0.5) {
65 height = radius * 2.0;
66 }
67 _update_shape();
68}
69
70real_t CapsuleShape2D::get_radius() const {
71 return radius;
72}
73
74void CapsuleShape2D::set_height(real_t p_height) {
75 ERR_FAIL_COND_MSG(p_height < 0, "CapsuleShape2D height cannot be negative.");
76 height = p_height;
77 if (radius > height * 0.5) {
78 radius = height * 0.5;
79 }
80 _update_shape();
81}
82
83real_t CapsuleShape2D::get_height() const {
84 return height;
85}
86
87void CapsuleShape2D::draw(const RID &p_to_rid, const Color &p_color) {
88 Vector<Vector2> points = _get_points();
89 Vector<Color> col = { p_color };
90 RenderingServer::get_singleton()->canvas_item_add_polygon(p_to_rid, points, col);
91
92 if (is_collision_outline_enabled()) {
93 points.push_back(points[0]);
94 col = { Color(p_color, 1.0) };
95 RenderingServer::get_singleton()->canvas_item_add_polyline(p_to_rid, points, col);
96 }
97}
98
99Rect2 CapsuleShape2D::get_rect() const {
100 const Vector2 half_size = Vector2(radius, height * 0.5);
101 return Rect2(-half_size, half_size * 2.0);
102}
103
104real_t CapsuleShape2D::get_enclosing_radius() const {
105 return height * 0.5;
106}
107
108void CapsuleShape2D::_bind_methods() {
109 ClassDB::bind_method(D_METHOD("set_radius", "radius"), &CapsuleShape2D::set_radius);
110 ClassDB::bind_method(D_METHOD("get_radius"), &CapsuleShape2D::get_radius);
111
112 ClassDB::bind_method(D_METHOD("set_height", "height"), &CapsuleShape2D::set_height);
113 ClassDB::bind_method(D_METHOD("get_height"), &CapsuleShape2D::get_height);
114
115 ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "radius", PROPERTY_HINT_RANGE, "0.01,1024,0.01,or_greater,suffix:px"), "set_radius", "get_radius");
116 ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "height", PROPERTY_HINT_RANGE, "0.01,1024,0.01,or_greater,suffix:px"), "set_height", "get_height");
117 ADD_LINKED_PROPERTY("radius", "height");
118 ADD_LINKED_PROPERTY("height", "radius");
119}
120
121CapsuleShape2D::CapsuleShape2D() :
122 Shape2D(PhysicsServer2D::get_singleton()->capsule_shape_create()) {
123 _update_shape();
124}
125