/// <summary>
/// Gets first picking position of giving ray
/// </summary>
/// <param name="ray">Picking ray</param>
/// <param name="rayPickingParams">Ray picking params</param>
/// <param name="result">Picking result</param>
/// <returns>Returns true if ground position found</returns>
public virtual bool PickFirst(Ray ray, RayPickingParams rayPickingParams, out PickingResult <Triangle> result)
{
result = new PickingResult <Triangle>()
{
Distance = float.MaxValue,
};
var bsph = this.GetBoundingSphere();
if (bsph.Intersects(ref ray))
{
bool facingOnly = !rayPickingParams.HasFlag(RayPickingParams.AllTriangles);
var triangles = this.GetVolume(rayPickingParams.HasFlag(RayPickingParams.Geometry));
if (triangles.Any() && Intersection.IntersectFirst(ray, triangles, facingOnly, out Vector3 p, out Triangle t, out float d))
{
result.Position = p;
result.Item = t;
result.Distance = d;
return(true);
}
}
return(false);
}
/// <summary>
/// Pick ground nearest position
/// </summary>
/// <param name="ray">Ray</param>
/// <param name="rayPickingParams">Ray picking params</param>
/// <param name="result">Picking result</param>
/// <returns>Returns true if picked position found</returns>
public bool PickNearest(Ray ray, RayPickingParams rayPickingParams, out PickingResult <Triangle> result)
{
bool res = false;
result = new PickingResult <Triangle>()
{
Distance = float.MaxValue,
};
bool facingOnly = !rayPickingParams.HasFlag(RayPickingParams.AllTriangles);
if (this.groundPickingQuadtree != null && this.groundPickingQuadtree.PickNearest(ray, facingOnly, out PickingResult <Triangle> gResult))
{
if (result.Distance > gResult.Distance)
{
result = gResult;
}
res = true;
}
return(res);
}
/// <summary>
/// Gets nearest picking position of giving ray
/// </summary>
/// <param name="ray">Picking ray</param>
/// <param name="result">Picking result</param>
/// <returns>Returns true if ground position found</returns>
public bool PickNearest(Ray ray, out PickingResult <Triangle> result)
{
return(PickNearest(ray, RayPickingParams.Default, out result));
}
/// <summary>
/// Gets first picking position of giving ray
/// </summary>
/// <param name="ray">Picking ray</param>
/// <param name="result">Picking result</param>
/// <returns>Returns true if ground position found</returns>
public virtual bool PickFirst(Ray ray, out PickingResult <Triangle> result)
{
return(PickFirst(ray, RayPickingParams.Default, out result));
}
