public Pulleys()
{
float y = 16.0f;
float L = 12.0f;
float a = 1.0f;
float b = 2.0f;
b2Body ground = null;
{
b2BodyDef bd = new b2BodyDef();
ground = m_world.CreateBody(bd);
b2EdgeShape edge = new b2EdgeShape();
edge.Set(new b2Vec2(-40.0f, 0.0f), new b2Vec2(40.0f, 0.0f));
//ground->CreateFixture(&shape, 0.0f);
b2CircleShape circle = new b2CircleShape();
circle.Radius = 2.0f;
circle.Position = new b2Vec2(-10.0f, y + b + L);
ground.CreateFixture(circle, 0.0f);
circle.Position = new b2Vec2(10.0f, y + b + L);
ground.CreateFixture(circle, 0.0f);
}
{
b2PolygonShape shape = new b2PolygonShape();
shape.SetAsBox(a, b);
b2BodyDef bd = new b2BodyDef();
bd.type = b2BodyType.b2_dynamicBody;
//bd.fixedRotation = true;
bd.position.Set(-10.0f, y);
b2Body body1 = m_world.CreateBody(bd);
body1.CreateFixture(shape, 5.0f);
bd.position.Set(10.0f, y);
b2Body body2 = m_world.CreateBody(bd);
body2.CreateFixture(shape, 5.0f);
b2PulleyJointDef pulleyDef = new b2PulleyJointDef();
b2Vec2 anchor1 = new b2Vec2(-10.0f, y + b);
b2Vec2 anchor2 = new b2Vec2(10.0f, y + b);
b2Vec2 groundAnchor1 = new b2Vec2(-10.0f, y + b + L);
b2Vec2 groundAnchor2 = new b2Vec2(10.0f, y + b + L);
pulleyDef.Initialize(body1, body2, groundAnchor1, groundAnchor2, anchor1, anchor2, 1.5f);
m_joint1 = (b2PulleyJoint)m_world.CreateJoint(pulleyDef);
}
}
internal b2PulleyJoint(b2PulleyJointDef def) : base(def)
{
m_groundAnchorA = def.groundAnchorA;
m_groundAnchorB = def.groundAnchorB;
m_localAnchorA = def.localAnchorA;
m_localAnchorB = def.localAnchorB;
m_lengthA = def.lengthA;
m_lengthB = def.lengthB;
Debug.Assert(def.ratio != 0.0f);
m_ratio = def.ratio;
m_constant = def.lengthA + m_ratio * def.lengthB;
m_impulse = 0.0f;
}
internal static global::System.Runtime.InteropServices.HandleRef getCPtr(b2PulleyJointDef obj)
{
return((obj == null) ? new global::System.Runtime.InteropServices.HandleRef(null, global::System.IntPtr.Zero) : obj.swigCPtr);
}