70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
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/*
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* Copyright (c) 2006-2009 Erin Catto http://www.box2d.org
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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 VARYING_RESTITUTION_H
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#define VARYING_RESTITUTION_H
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// Note: even with a restitution of 1.0, there is some energy change
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// due to position correction.
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class VaryingRestitution : public Test
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{
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public:
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VaryingRestitution()
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{
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{
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b2BodyDef bd;
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b2Body* ground = m_world->CreateBody(&bd);
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b2EdgeShape shape;
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shape.Set(b2Vec2(-40.0f, 0.0f), b2Vec2(40.0f, 0.0f));
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ground->CreateFixture(&shape, 0.0f);
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}
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{
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b2CircleShape shape;
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shape.m_radius = 1.0f;
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b2FixtureDef fd;
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fd.shape = &shape;
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fd.density = 1.0f;
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float32 restitution[7] = {0.0f, 0.1f, 0.3f, 0.5f, 0.75f, 0.9f, 1.0f};
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for (int32 i = 0; i < 7; ++i)
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{
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b2BodyDef bd;
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bd.type = b2_dynamicBody;
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bd.position.Set(-10.0f + 3.0f * i, 20.0f);
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b2Body* body = m_world->CreateBody(&bd);
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fd.restitution = restitution[i];
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body->CreateFixture(&fd);
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}
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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 VaryingRestitution;
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}
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};
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#endif
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