mirror of https://github.com/axmolengine/axmol.git
135 lines
3.9 KiB
C++
135 lines
3.9 KiB
C++
/*
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* Copyright (c) 2006-2009 Erin Catto http://www.gphysics.com
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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*/
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#ifndef TIME_OF_IMPACT_H
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#define TIME_OF_IMPACT_H
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class TimeOfImpact : public Test
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{
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public:
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TimeOfImpact()
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{
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{
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//m_shapeA.SetAsEdge(b2Vec2(-10.0f, 0.0f), b2Vec2(10.0f, 0.0f));
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m_shapeA.SetAsBox(0.2f, 1.0f, b2Vec2(0.5f, 1.0f), 0.0f);
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}
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{
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m_shapeB.SetAsBox(2.0f, 0.1f);
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}
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}
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static Test* Create()
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{
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return new TimeOfImpact;
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}
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void Step(Settings* settings)
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{
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Test::Step(settings);
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b2Sweep sweepA;
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sweepA.c0.SetZero();
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sweepA.a0 = 0.0f;
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sweepA.c = sweepA.c0;
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sweepA.a = sweepA.a0;
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sweepA.localCenter.SetZero();
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b2Sweep sweepB;
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sweepB.c0.Set(-0.20382018f, 2.1368704f);
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sweepB.a0 = -3.1664171f;
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sweepB.c.Set(-0.26699525f, 2.3552670f);
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sweepB.a = -3.3926492f;
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sweepB.localCenter.SetZero();
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b2TOIInput input;
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input.proxyA.Set(&m_shapeA);
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input.proxyB.Set(&m_shapeB);
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input.sweepA = sweepA;
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input.sweepB = sweepB;
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input.tMax = 1.0f;
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b2TOIOutput output;
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b2TimeOfImpact(&output, &input);
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m_debugDraw.DrawString(5, m_textLine, "toi = %g", output.t);
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m_textLine += 15;
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extern int b2_toiMaxIters, b2_toiMaxRootIters;
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m_debugDraw.DrawString(5, m_textLine, "max toi iters = %d, max root iters = %d", b2_toiMaxIters, b2_toiMaxRootIters);
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m_textLine += 15;
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b2Vec2 vertices[b2_maxPolygonVertices];
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b2Transform transformA;
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sweepA.GetTransform(&transformA, 0.0f);
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for (int i = 0; i < m_shapeA.m_vertexCount; ++i)
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{
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vertices[i] = b2Mul(transformA, m_shapeA.m_vertices[i]);
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}
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m_debugDraw.DrawPolygon(vertices, m_shapeA.m_vertexCount, b2Color(0.9f, 0.9f, 0.9f));
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b2Transform transformB;
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sweepB.GetTransform(&transformB, 0.0f);
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b2Vec2 localPoint(2.0f, -0.1f);
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b2Vec2 rB = b2Mul(transformB, localPoint) - sweepB.c0;
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float32 wB = sweepB.a - sweepB.a0;
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b2Vec2 vB = sweepB.c - sweepB.c0;
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b2Vec2 v = vB + b2Cross(wB, rB);
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for (int i = 0; i < m_shapeB.m_vertexCount; ++i)
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{
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vertices[i] = b2Mul(transformB, m_shapeB.m_vertices[i]);
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}
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m_debugDraw.DrawPolygon(vertices, m_shapeB.m_vertexCount, b2Color(0.5f, 0.9f, 0.5f));
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sweepB.GetTransform(&transformB, output.t);
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for (int i = 0; i < m_shapeB.m_vertexCount; ++i)
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{
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vertices[i] = b2Mul(transformB, m_shapeB.m_vertices[i]);
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}
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m_debugDraw.DrawPolygon(vertices, m_shapeB.m_vertexCount, b2Color(0.5f, 0.7f, 0.9f));
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sweepB.GetTransform(&transformB, 1.0f);
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for (int i = 0; i < m_shapeB.m_vertexCount; ++i)
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{
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vertices[i] = b2Mul(transformB, m_shapeB.m_vertices[i]);
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}
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m_debugDraw.DrawPolygon(vertices, m_shapeB.m_vertexCount, b2Color(0.9f, 0.5f, 0.5f));
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#if 0
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for (float32 t = 0.0f; t < 1.0f; t += 0.1f)
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{
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sweepB.GetTransform(&transformB, t);
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for (int i = 0; i < m_shapeB.m_vertexCount; ++i)
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{
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vertices[i] = b2Mul(transformB, m_shapeB.m_vertices[i]);
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}
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m_debugDraw.DrawPolygon(vertices, m_shapeB.m_vertexCount, b2Color(0.9f, 0.5f, 0.5f));
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}
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#endif
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}
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b2PolygonShape m_shapeA;
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b2PolygonShape m_shapeB;
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};
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#endif
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