public static Boolean GetCollision(SphereCollision collidableA, RingCollision collidableB, out Vector3 position,
out Vector3 normal)
{
// first let's get the collision parameters from the Plane Collision.
SphereOnPlaneCollision.GetCollision(collidableA, collidableB, out var planeCollision, out var planeNormal,
out var scale1, out var scale2);
// Now get distance from our origin to the point planeCollision
// transformation matrix 1
var tm1 = collidableA.Parent.ScaleMatrix * collidableA.Parent.RotationMatrix;
// transformation matrix 2
var tm2 = collidableB.Parent.ScaleMatrix * collidableB.Parent.RotationMatrix;
var sv1 = Vector3.Transform(collidableB.SpanVector1, tm2);
var sv2 = Vector3.Transform(collidableB.SpanVector2, tm2);
var distanceOnPlane = (scale1 * sv1 + scale2 * sv2).Length();
var ringNorm = (scale1 * scale1 + scale2 * scale2) * collidableB.Radius;
var ringScale1 = scale1 / ringNorm;
var ringScale2 = scale2 / ringNorm;
position = collidableB.Position + Vector3.Transform(collidableB.Origin, tm2) + ringScale1 * sv1 + ringScale2 * sv2;
normal = collidableA.Position - position;
var collide = normal.Length() < collidableA.Radius + collidableB.InnerRadius;
normal.Normalize();
return(collide);
}
public static Boolean GetCollision(SphereCollision collidableA, BoundPlaneCollision collidableB, out Vector3 position,
out Vector3 normal, out float scale1, out float scale2)
{
if (SphereOnPlaneCollision.GetCollision(collidableA, collidableB, out position, out normal, out scale1, out scale2))
{
//Console.WriteLine($"SOBPC @{collidableB.Position + collidableB.Origin} + {scale1} * {collidableB.SpanVector1} + {scale2} * {collidableB.SpanVector2} = {position}");
return(collidableB.Restriction(scale1, scale2));
}
return(false);
}