public int FindContacts(Primitive primOne, Primitive primTwo)
{
CollisionData data = new CollisionData();
data.contactsLeft = 1;
int numContacts = FindContacts(primOne, primTwo, data);
return numContacts;
}
public static void Render(Primitive prim, RenderContext context, Color color)
{
if (prim.PrimType == Forever.Physics.Collide.CollideType.Sphere)
{
Sphere sphere = (Sphere)prim;
BoundingSphere bs = new BoundingSphere(prim.Body.Position, sphere.Radius);
BoundingSphereRenderer.Render(bs, context, color);
}
else if (prim.PrimType == Forever.Physics.Collide.CollideType.Box)
{
Box b = (Box)prim;
Matrix world = prim.Body.World;
BoundingBoxRenderer.Render(
BoundingBox.CreateFromPoints(b.LocalVerts()),
context.GraphicsDevice,
world * b.OffsetMatrix,
context.Camera.View,
context.Camera.Projection,
color
);
}else if(prim.PrimType == Forever.Physics.Collide.CollideType.Plane){
Render((Forever.Physics.Collide.Plane)prim, context, color);
}
else
{
throw new Exception("I don't know how to draw that!");
}
}
public bool Intersecting(Primitive primOne, Primitive primTwo)
{
return FindContacts(primOne, primTwo) > 0;
}
public int FindContacts(Primitive primOne, Primitive primTwo, CollisionData data)
{
return IntersectionTests.primAndPrim(primOne, primTwo, data);
}
public void UnloadContent()
{
prim = null;
}
//dispatch
public static int primAndPrim(Primitive one, Primitive two, CollisionData data)
{
if (one.PrimType == CollideType.Sphere
&& two.PrimType == CollideType.Sphere)
{
return sphereAndSphere((Sphere)one, (Sphere)two, data);
}
if (one.PrimType == CollideType.Sphere
&& two.PrimType == CollideType.Plane)
{
return sphereAndHalfSpace((Sphere)one, (Plane)two, data);
}
if (one.PrimType == CollideType.Plane
&& two.PrimType == CollideType.Sphere)
{
return sphereAndHalfSpace((Sphere)two, (Plane)one, data);
}
if (one.PrimType == CollideType.Box
&& two.PrimType == CollideType.Sphere)
{
return boxAndSphere((Box)one, (Sphere)two, data);
}
if (one.PrimType == CollideType.Sphere
&& two.PrimType == CollideType.Box)
{
return boxAndSphere((Box)two, (Sphere)one, data);
}
if (one.PrimType == CollideType.Box
&& two.PrimType == CollideType.Plane)
{
return boxAndPlane((Box)one, (Plane)two, data);
}
if (one.PrimType == CollideType.Plane
&& two.PrimType == CollideType.Box)
{
return boxAndPlane((Box)two, (Plane)one, data);
}
if (one.PrimType == CollideType.Box && two.PrimType == CollideType.Box)
{
return boxAndBox((Box)one, (Box)two, data);
}
throw new Exception("I don't know wtf that is!");
}
