Box2D: /build/box2d/src/box2d-adaedf1772ede7420bc9ee569c8cba7952db91a0/include/box2d/b2_circle_shape.h Source File

| Box2D 2.4.0 A 2D physics engine for games

b2_circle_shape.h
1 // MIT License
2
3 // Copyright (c) 2019 Erin Catto
4
5 // Permission is hereby granted, free of charge, to any person obtaining a copy
6 // of this software and associated documentation files (the "Software"), to deal
7 // in the Software without restriction, including without limitation the rights
8 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 // copies of the Software, and to permit persons to whom the Software is
10 // furnished to do so, subject to the following conditions:
11
12 // The above copyright notice and this permission notice shall be included in all
13 // copies or substantial portions of the Software.
14
15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 // SOFTWARE.
22
23 #ifndef B2_CIRCLE_SHAPE_H
24 #define B2_CIRCLE_SHAPE_H
25
26 #include "b2_api.h"
27 #include "b2_shape.h"
28
30 class B2_API b2CircleShape : public b2Shape
31 {
32 public:
33 b2CircleShape();
34
36 b2Shape* Clone(b2BlockAllocator* allocator) const override;
37
39 int32 GetChildCount() const override;
40
42 bool TestPoint(const b2Transform& transform, const b2Vec2& p) const override;
43
47 bool RayCast(b2RayCastOutput* output, const b2RayCastInput& input,
48 const b2Transform& transform, int32 childIndex) const override;
49
51 void ComputeAABB(b2AABB* aabb, const b2Transform& transform, int32 childIndex) const override;
52
54 void ComputeMass(b2MassData* massData, float density) const override;
55
57 b2Vec2 m_p;
58 };
59
60 inline b2CircleShape::b2CircleShape()
61 {
62 m_type = e_circle;
63 m_radius = 0.0f;
64 m_p.SetZero();
65 }
66
67 #endif
b2Vec2
A 2D column vector.
Definition: b2_math.h:42
b2CircleShape::RayCast
bool RayCast(b2RayCastOutput *output, const b2RayCastInput &input, const b2Transform &transform, int32 childIndex) const override
b2RayCastInput
Ray-cast input data. The ray extends from p1 to p1 + maxFraction * (p2 - p1).
Definition: b2_collision.h:154
b2Transform
Definition: b2_math.h:339
b2Shape::m_radius
float m_radius
Definition: b2_shape.h:102
b2CircleShape::Clone
b2Shape * Clone(b2BlockAllocator *allocator) const override
Implement b2Shape.
b2CircleShape::ComputeAABB
void ComputeAABB(b2AABB *aabb, const b2Transform &transform, int32 childIndex) const override
b2AABB
An axis aligned bounding box.
Definition: b2_collision.h:169
b2CircleShape::ComputeMass
void ComputeMass(b2MassData *massData, float density) const override
b2CircleShape::m_p
b2Vec2 m_p
Position.
Definition: b2_circle_shape.h:57
b2BlockAllocator
Definition: b2_block_allocator.h:38
b2CircleShape::GetChildCount
int32 GetChildCount() const override
b2Shape
Definition: b2_shape.h:49
b2MassData
This holds the mass data computed for a shape.
Definition: b2_shape.h:34
b2Vec2::SetZero
void SetZero()
Set this vector to all zeros.
Definition: b2_math.h:50
b2RayCastOutput
Definition: b2_collision.h:162
b2CircleShape
A solid circle shape.
Definition: b2_circle_shape.h:31
b2CircleShape::TestPoint
bool TestPoint(const b2Transform &transform, const b2Vec2 &p) const override
Implement b2Shape.