private SceneIntersectResult SceneIntersect(RayEntity rayEntity, float?distanceMax = null)
{
CollisionResult collisionRef = null;
float? distanceMin = null;
IEssence essenceRef = null;
foreach (var essence in essences)
{
var collision = essence.CheckCollision(rayEntity);
if (collision == null)
{
continue;
}
var distance = (rayEntity.Origin - collision.Point).Length();
if (distanceMax != null && distanceMax < distance)
{
continue;
}
if (distanceMin == null ^ distanceMin > distance)
{
distanceMin = distance;
essenceRef = essence;
collisionRef = collision;
}
}
if (essenceRef == null)
{
return(null);
}
return(new SceneIntersectResult()
{
Essence = essenceRef,
Collision = collisionRef
});
}
public void AddEssence(IEssence essence)
{
essences.Add(essence);
}
