private bool IntersectsChildContent(CanvasRootControl child, ref Ray ray, out Vector2 childSpaceLocation)
{
// Inline bounds calculations (it will reuse world matrix)
OrientedBoundingBox bounds = new OrientedBoundingBox();
bounds.Extents = new Vector3(child.Size * 0.5f, Mathf.Epsilon);
Matrix world;
child.Canvas.GetWorldMatrix(out world);
Matrix offset;
Matrix.Translation(bounds.Extents.X, bounds.Extents.Y, 0, out offset);
Matrix.Multiply(ref offset, ref world, out bounds.Transformation);
// Hit test
Vector3 hitPoint;
if (bounds.Intersects(ref ray, out hitPoint))
{
// Transform world-space hit point to canvas local-space
Vector3 localHitPoint;
world.Invert();
Vector3.Transform(ref hitPoint, ref world, out localHitPoint);
childSpaceLocation = new Vector2(localHitPoint);
return(child.ContainsPoint(ref childSpaceLocation));
}
childSpaceLocation = Vector2.Zero;
return(false);
}
private bool IntersectsChildContent(CanvasRootControl child, ref Ray ray, out Float2 childSpaceLocation)
{
// Inline bounds calculations (it will reuse world matrix)
var bounds = new OrientedBoundingBox
{
Extents = new Vector3(child.Size * 0.5f, Mathf.Epsilon)
};
child.Canvas.GetWorldMatrix(out var world);
Matrix.Translation((float)bounds.Extents.X, (float)bounds.Extents.Y, 0, out var offset);
Matrix.Multiply(ref offset, ref world, out var boxWorld);
boxWorld.Decompose(out bounds.Transformation);
// Hit test
if (bounds.Intersects(ref ray, out Vector3 hitPoint))
{
// Transform world-space hit point to canvas local-space
world.Invert();
Vector3.Transform(ref hitPoint, ref world, out Vector3 localHitPoint);
childSpaceLocation = new Float2(localHitPoint);
return(child.ContainsPoint(ref childSpaceLocation));
}
childSpaceLocation = Float2.Zero;
return(false);
}
