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authorchai <chaifix@163.com>2019-03-19 23:06:27 +0800
committerchai <chaifix@163.com>2019-03-19 23:06:27 +0800
commit1497dccd63a84b7ee2b229b1ad9c5c02718f2a78 (patch)
treef8d1bff50da13e126d08c7345653e002e293202d /Source/3rdParty/Box2D/Collision/Shapes/b2ChainShape.cpp
parent5e2a973516e0729b225da9de0b03015dc5854ac4 (diff)
*rename
Diffstat (limited to 'Source/3rdParty/Box2D/Collision/Shapes/b2ChainShape.cpp')
-rw-r--r--Source/3rdParty/Box2D/Collision/Shapes/b2ChainShape.cpp198
1 files changed, 0 insertions, 198 deletions
diff --git a/Source/3rdParty/Box2D/Collision/Shapes/b2ChainShape.cpp b/Source/3rdParty/Box2D/Collision/Shapes/b2ChainShape.cpp
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--- a/Source/3rdParty/Box2D/Collision/Shapes/b2ChainShape.cpp
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@@ -1,198 +0,0 @@
-/*
-* Copyright (c) 2006-2010 Erin Catto http://www.box2d.org
-*
-* This software is provided 'as-is', without any express or implied
-* warranty. In no event will the authors be held liable for any damages
-* arising from the use of this software.
-* Permission is granted to anyone to use this software for any purpose,
-* including commercial applications, and to alter it and redistribute it
-* freely, subject to the following restrictions:
-* 1. The origin of this software must not be misrepresented; you must not
-* claim that you wrote the original software. If you use this software
-* in a product, an acknowledgment in the product documentation would be
-* appreciated but is not required.
-* 2. Altered source versions must be plainly marked as such, and must not be
-* misrepresented as being the original software.
-* 3. This notice may not be removed or altered from any source distribution.
-*/
-
-#include "Box2D/Collision/Shapes/b2ChainShape.h"
-#include "Box2D/Collision/Shapes/b2EdgeShape.h"
-#include <new>
-#include <string.h>
-
-b2ChainShape::~b2ChainShape()
-{
- Clear();
-}
-
-void b2ChainShape::Clear()
-{
- b2Free(m_vertices);
- m_vertices = nullptr;
- m_count = 0;
-}
-
-void b2ChainShape::CreateLoop(const b2Vec2* vertices, int32 count)
-{
- b2Assert(m_vertices == nullptr && m_count == 0);
- b2Assert(count >= 3);
- if (count < 3)
- {
- return;
- }
-
- for (int32 i = 1; i < count; ++i)
- {
- b2Vec2 v1 = vertices[i-1];
- b2Vec2 v2 = vertices[i];
- // If the code crashes here, it means your vertices are too close together.
- b2Assert(b2DistanceSquared(v1, v2) > b2_linearSlop * b2_linearSlop);
- }
-
- m_count = count + 1;
- m_vertices = (b2Vec2*)b2Alloc(m_count * sizeof(b2Vec2));
- memcpy(m_vertices, vertices, count * sizeof(b2Vec2));
- m_vertices[count] = m_vertices[0];
- m_prevVertex = m_vertices[m_count - 2];
- m_nextVertex = m_vertices[1];
- m_hasPrevVertex = true;
- m_hasNextVertex = true;
-}
-
-void b2ChainShape::CreateChain(const b2Vec2* vertices, int32 count)
-{
- b2Assert(m_vertices == nullptr && m_count == 0);
- b2Assert(count >= 2);
- for (int32 i = 1; i < count; ++i)
- {
- // If the code crashes here, it means your vertices are too close together.
- b2Assert(b2DistanceSquared(vertices[i-1], vertices[i]) > b2_linearSlop * b2_linearSlop);
- }
-
- m_count = count;
- m_vertices = (b2Vec2*)b2Alloc(count * sizeof(b2Vec2));
- memcpy(m_vertices, vertices, m_count * sizeof(b2Vec2));
-
- m_hasPrevVertex = false;
- m_hasNextVertex = false;
-
- m_prevVertex.SetZero();
- m_nextVertex.SetZero();
-}
-
-void b2ChainShape::SetPrevVertex(const b2Vec2& prevVertex)
-{
- m_prevVertex = prevVertex;
- m_hasPrevVertex = true;
-}
-
-void b2ChainShape::SetNextVertex(const b2Vec2& nextVertex)
-{
- m_nextVertex = nextVertex;
- m_hasNextVertex = true;
-}
-
-b2Shape* b2ChainShape::Clone(b2BlockAllocator* allocator) const
-{
- void* mem = allocator->Allocate(sizeof(b2ChainShape));
- b2ChainShape* clone = new (mem) b2ChainShape;
- clone->CreateChain(m_vertices, m_count);
- clone->m_prevVertex = m_prevVertex;
- clone->m_nextVertex = m_nextVertex;
- clone->m_hasPrevVertex = m_hasPrevVertex;
- clone->m_hasNextVertex = m_hasNextVertex;
- return clone;
-}
-
-int32 b2ChainShape::GetChildCount() const
-{
- // edge count = vertex count - 1
- return m_count - 1;
-}
-
-void b2ChainShape::GetChildEdge(b2EdgeShape* edge, int32 index) const
-{
- b2Assert(0 <= index && index < m_count - 1);
- edge->m_type = b2Shape::e_edge;
- edge->m_radius = m_radius;
-
- edge->m_vertex1 = m_vertices[index + 0];
- edge->m_vertex2 = m_vertices[index + 1];
-
- if (index > 0)
- {
- edge->m_vertex0 = m_vertices[index - 1];
- edge->m_hasVertex0 = true;
- }
- else
- {
- edge->m_vertex0 = m_prevVertex;
- edge->m_hasVertex0 = m_hasPrevVertex;
- }
-
- if (index < m_count - 2)
- {
- edge->m_vertex3 = m_vertices[index + 2];
- edge->m_hasVertex3 = true;
- }
- else
- {
- edge->m_vertex3 = m_nextVertex;
- edge->m_hasVertex3 = m_hasNextVertex;
- }
-}
-
-bool b2ChainShape::TestPoint(const b2Transform& xf, const b2Vec2& p) const
-{
- B2_NOT_USED(xf);
- B2_NOT_USED(p);
- return false;
-}
-
-bool b2ChainShape::RayCast(b2RayCastOutput* output, const b2RayCastInput& input,
- const b2Transform& xf, int32 childIndex) const
-{
- b2Assert(childIndex < m_count);
-
- b2EdgeShape edgeShape;
-
- int32 i1 = childIndex;
- int32 i2 = childIndex + 1;
- if (i2 == m_count)
- {
- i2 = 0;
- }
-
- edgeShape.m_vertex1 = m_vertices[i1];
- edgeShape.m_vertex2 = m_vertices[i2];
-
- return edgeShape.RayCast(output, input, xf, 0);
-}
-
-void b2ChainShape::ComputeAABB(b2AABB* aabb, const b2Transform& xf, int32 childIndex) const
-{
- b2Assert(childIndex < m_count);
-
- int32 i1 = childIndex;
- int32 i2 = childIndex + 1;
- if (i2 == m_count)
- {
- i2 = 0;
- }
-
- b2Vec2 v1 = b2Mul(xf, m_vertices[i1]);
- b2Vec2 v2 = b2Mul(xf, m_vertices[i2]);
-
- aabb->lowerBound = b2Min(v1, v2);
- aabb->upperBound = b2Max(v1, v2);
-}
-
-void b2ChainShape::ComputeMass(b2MassData* massData, float32 density) const
-{
- B2_NOT_USED(density);
-
- massData->mass = 0.0f;
- massData->center.SetZero();
- massData->I = 0.0f;
-}