// TODO_ERIN might not need to return the separation
public virtual float initialize(Distance.SimplexCache cache, Distance.DistanceProxy proxyA, Sweep sweepA, Distance.DistanceProxy proxyB, Sweep sweepB, float t1)
{
m_proxyA = proxyA;
m_proxyB = proxyB;
int count = cache.count;
Debug.Assert(0 < count && count < 3);
m_sweepA = sweepA;
m_sweepB = sweepB;
m_sweepA.getTransform(xfa, t1);
m_sweepB.getTransform(xfb, t1);
// log.debug("initializing separation.\n" +
// "cache: "+cache.count+"-"+cache.metric+"-"+cache.indexA+"-"+cache.indexB+"\n"
// "distance: "+proxyA.
if (count == 1)
{
m_type = Type.POINTS;
/*
* Vec2 localPointA = m_proxyA.GetVertex(cache.indexA[0]); Vec2 localPointB =
* m_proxyB.GetVertex(cache.indexB[0]); Vec2 pointA = Mul(transformA, localPointA); Vec2
* pointB = Mul(transformB, localPointB); m_axis = pointB - pointA; m_axis.Normalize();
*/
localPointA.set_Renamed(m_proxyA.getVertex(cache.indexA[0]));
localPointB.set_Renamed(m_proxyB.getVertex(cache.indexB[0]));
Transform.mulToOutUnsafe(xfa, localPointA, pointA);
Transform.mulToOutUnsafe(xfb, localPointB, pointB);
m_axis.set_Renamed(pointB).subLocal(pointA);
float s = m_axis.normalize();
return s;
}
else if (cache.indexA[0] == cache.indexA[1])
{
// Two points on B and one on A.
m_type = Type.FACE_B;
localPointB1.set_Renamed(m_proxyB.getVertex(cache.indexB[0]));
localPointB2.set_Renamed(m_proxyB.getVertex(cache.indexB[1]));
temp.set_Renamed(localPointB2).subLocal(localPointB1);
Vec2.crossToOutUnsafe(temp, 1f, m_axis);
m_axis.normalize();
Rot.mulToOutUnsafe(xfb.q, m_axis, normal);
m_localPoint.set_Renamed(localPointB1).addLocal(localPointB2).mulLocal(.5f);
Transform.mulToOutUnsafe(xfb, m_localPoint, pointB);
localPointA.set_Renamed(proxyA.getVertex(cache.indexA[0]));
Transform.mulToOutUnsafe(xfa, localPointA, pointA);
temp.set_Renamed(pointA).subLocal(pointB);
float s = Vec2.dot(temp, normal);
if (s < 0.0f)
{
m_axis.negateLocal();
s = -s;
}
return s;
}
else
{
// Two points on A and one or two points on B.
m_type = Type.FACE_A;
localPointA1.set_Renamed(m_proxyA.getVertex(cache.indexA[0]));
localPointA2.set_Renamed(m_proxyA.getVertex(cache.indexA[1]));
temp.set_Renamed(localPointA2).subLocal(localPointA1);
Vec2.crossToOutUnsafe(temp, 1.0f, m_axis);
m_axis.normalize();
Rot.mulToOutUnsafe(xfa.q, m_axis, normal);
m_localPoint.set_Renamed(localPointA1).addLocal(localPointA2).mulLocal(.5f);
Transform.mulToOutUnsafe(xfa, m_localPoint, pointA);
localPointB.set_Renamed(m_proxyB.getVertex(cache.indexB[0]));
Transform.mulToOutUnsafe(xfb, localPointB, pointB);
temp.set_Renamed(pointB).subLocal(pointA);
float s = Vec2.dot(temp, normal);
if (s < 0.0f)
{
m_axis.negateLocal();
s = -s;
}
return s;
}
}
// TODO_ERIN might not need to return the separation
public float Initialize(Distance.SimplexCache cache, Distance.DistanceProxy proxyA, Sweep sweepA, Distance.DistanceProxy proxyB, Sweep sweepB, float t1)
{
ProxyA = proxyA;
ProxyB = proxyB;
int count = cache.Count;
Debug.Assert(0 < count && count < 3);
SweepA = sweepA;
SweepB = sweepB;
SweepA.GetTransform(xfa, t1);
SweepB.GetTransform(xfb, t1);
// log.debug("initializing separation.\n" +
// "cache: "+cache.count+"-"+cache.metric+"-"+cache.indexA+"-"+cache.indexB+"\n"
// "distance: "+proxyA.
if (count == 1)
{
Type = Type.Points;
/*
* Vec2 localPointA = m_proxyA.GetVertex(cache.indexA[0]); Vec2 localPointB =
* m_proxyB.GetVertex(cache.indexB[0]); Vec2 pointA = Mul(transformA, localPointA); Vec2
* pointB = Mul(transformB, localPointB); m_axis = pointB - pointA; m_axis.Normalize();
*/
localPointA.Set(ProxyA.GetVertex(cache.IndexA[0]));
localPointB.Set(ProxyB.GetVertex(cache.IndexB[0]));
Transform.MulToOutUnsafe(xfa, localPointA, pointA);
Transform.MulToOutUnsafe(xfb, localPointB, pointB);
Axis.Set(pointB).SubLocal(pointA);
float s = Axis.Normalize();
return s;
}
else if (cache.IndexA[0] == cache.IndexA[1])
{
// Two points on B and one on A.
Type = Type.FaceB;
localPointB1.Set(ProxyB.GetVertex(cache.IndexB[0]));
localPointB2.Set(ProxyB.GetVertex(cache.IndexB[1]));
temp.Set(localPointB2).SubLocal(localPointB1);
Vec2.CrossToOutUnsafe(temp, 1f, Axis);
Axis.Normalize();
Rot.MulToOutUnsafe(xfb.Q, Axis, normal);
LocalPoint.Set(localPointB1).AddLocal(localPointB2).MulLocal(.5f);
Transform.MulToOutUnsafe(xfb, LocalPoint, pointB);
localPointA.Set(proxyA.GetVertex(cache.IndexA[0]));
Transform.MulToOutUnsafe(xfa, localPointA, pointA);
temp.Set(pointA).SubLocal(pointB);
float s = Vec2.Dot(temp, normal);
if (s < 0.0f)
{
Axis.NegateLocal();
s = -s;
}
return s;
}
else
{
// Two points on A and one or two points on B.
Type = Type.FaceA;
localPointA1.Set(ProxyA.GetVertex(cache.IndexA[0]));
localPointA2.Set(ProxyA.GetVertex(cache.IndexA[1]));
temp.Set(localPointA2).SubLocal(localPointA1);
Vec2.CrossToOutUnsafe(temp, 1.0f, Axis);
Axis.Normalize();
Rot.MulToOutUnsafe(xfa.Q, Axis, normal);
LocalPoint.Set(localPointA1).AddLocal(localPointA2).MulLocal(.5f);
Transform.MulToOutUnsafe(xfa, LocalPoint, pointA);
localPointB.Set(ProxyB.GetVertex(cache.IndexB[0]));
Transform.MulToOutUnsafe(xfb, localPointB, pointB);
temp.Set(pointB).SubLocal(pointA);
float s = Vec2.Dot(temp, normal);
if (s < 0.0f)
{
Axis.NegateLocal();
s = -s;
}
return s;
}
}
public DefaultWorldPool(int argSize, int argContainerSize)
{
args = new object[] { this };
pcstack = new MutableStack<Contact, PolygonContact>(Settings.CONTACT_STACK_INIT_SIZE, classes, args);
ccstack = new MutableStack<Contact, CircleContact>(Settings.CONTACT_STACK_INIT_SIZE, classes, args);
cpstack = new MutableStack<Contact, PolygonAndCircleContact>(Settings.CONTACT_STACK_INIT_SIZE, classes, args);
ecstack = new MutableStack<Contact, EdgeAndCircleContact>(Settings.CONTACT_STACK_INIT_SIZE, classes, args);
epstack = new MutableStack<Contact, EdgeAndPolygonContact>(Settings.CONTACT_STACK_INIT_SIZE, classes, args);
chcstack = new MutableStack<Contact, ChainAndCircleContact>(Settings.CONTACT_STACK_INIT_SIZE, classes, args);
chpstack = new MutableStack<Contact, ChainAndPolygonContact>(Settings.CONTACT_STACK_INIT_SIZE, classes, args);
vecs = new OrderedStack<Vec2>(argSize, argContainerSize);
vec3s = new OrderedStack<Vec3>(argSize, argContainerSize);
mats = new OrderedStack<Mat22>(argSize, argContainerSize);
aabbs = new OrderedStack<AABB>(argSize, argContainerSize);
rots = new OrderedStack<Rot>(argSize, argContainerSize);
mat33s = new OrderedStack<Mat33>(argSize, argContainerSize);
dist = new Distance();
collision = new Collision.Collision(this);
toi = new TimeOfImpact(this);
}