public static List <GameObject> GetVisibleObjects(this Camera camera, CameraViewVolume viewVolume)
{
// Retrieve the objects which are overlapped by the camera volume's OBB
List <GameObject> overlappedObjects = RTScene.Get.OverlapBox(viewVolume.WorldOBB);
if (overlappedObjects.Count == 0)
{
return(new List <GameObject>());
}
// Loop through each overlapped object
var boundsQConfig = new ObjectBounds.QueryConfig();
boundsQConfig.ObjectTypes = GameObjectTypeHelper.AllCombined;
boundsQConfig.NoVolumeSize = Vector3Ex.FromValue(1e-5f);
var visibleObjects = new List <GameObject>(overlappedObjects.Count);
foreach (var gameObject in overlappedObjects)
{
// Retrieve the object's world AABB
AABB worldAABB = ObjectBounds.CalcWorldAABB(gameObject, boundsQConfig);
// If the AABB is valid and if the camera's view volume intersects the AABB,
// it means we are dealing with a visible object so we store it inside the
// output list.
if (worldAABB.IsValid && viewVolume.CheckAABB(worldAABB))
{
visibleObjects.Add(gameObject);
}
}
return(visibleObjects);
}
/// <summary>
/// Checks if the handle is visible on the screen (i.e. it is visible to the
/// specified camera.
/// </summary>
/// <param name="camera">The camera which is involved in the visibility test.</param>
/// <param name="frustumWorldPlanes">The camera frustum world planes.</param>
/// <returns>
/// True if at least one shape (either 2D or 3D) that belongs to the handle is
/// visible and false otehrwise. Note: When the gizmo position lies behind the
/// camera near plane, all 2D shapes are considered NOT visible.
/// </returns>
public bool IsVisibleToCamera(Camera camera, Plane[] frustumWorldPlanes)
{
bool found2DVisible = false;
bool found3DVisible = false;
if (Num2DShapes != 0)
{
if (camera.IsPointInFrontNearPlane(Gizmo.Transform.Position3D))
{
foreach (var shape in _2DShapes)
{
Rect enclosingRect = shape.Shape.GetEncapsulatingRect();
if (camera.pixelRect.Overlaps(enclosingRect, true))
{
found2DVisible = true;
break;
}
}
}
}
if (found2DVisible)
{
return(true);
}
if (Num3DShapes != 0)
{
foreach (var shape in _3DShapes)
{
AABB aabb = shape.Shape.GetAABB();
if (CameraViewVolume.CheckAABB(camera, aabb, frustumWorldPlanes))
{
found3DVisible = true;
break;
}
}
}
return(found3DVisible);
}