/// <summary>
/// Adds a ray and target to test an intersection. If the target is pickable,
/// and an intersection exists, the records are added to the query.
/// </summary>
/// <param name="ray">Ray to test with</param>
/// <param name="pickable">Target to test against</param>
/// <returns>True if an intersection was found, false otherwise.</returns>
public bool AddPick(Ray ray, IPickable pickable)
{
if (pickable == null)
{
return(false);
}
if (pickable.IsPickable)
{
BoundingVolume bv = pickable.WorldBounding;
BoundingIntersectionRecord bvRecord = new BoundingIntersectionRecord();
PrimitiveIntersectionRecord primRecord = new PrimitiveIntersectionRecord();
if (bv != null)
{
bv.IntersectsWhere(ref ray, out bvRecord);
}
else
{
return(false);
}
if (bvRecord.IntersectionCount > 0 && _primitivePickingEnabled)
{
primRecord = pickable.IntersectsPrimitivesWhere(ray);
if (primRecord.IntersectionCount > 0)
{
_results.Add(new PickResult(ray, pickable, bvRecord, primRecord));
_sorted = false;
return(true);
}
}
else if (bvRecord.IntersectionCount > 0)
{
_results.Add(new PickResult(ray, pickable, bvRecord));
_sorted = false;
return(true);
}
}
return(false);
}