/// <summary>
/// Used to find which primitive object the mouse is currently hold over for selecting that object
/// </summary>
/// <param name="mousePosition">the mouses location</param>
/// <param name="shape">the primitive that you wish to see if the mouse is currently hovering over</param>
/// <param name="distance">the distance from the mouse to the shape</param>
/// <returns>true is mouse is over that primitive; false otherwise</returns>
public bool RayCalculation(Vector2 mousePosition, MeshClass mesh)
{
var mouseNear = new Vector3(mousePosition, 0.0f);
var mouseFar = new Vector3(mousePosition, 1.0f);
var mat = this.View * this.projection * DeviceManager.LocalDevice.GetTransform(TransformState.World);
Vector3.Unproject(ref mouseNear, DeviceManager.LocalDevice.Viewport.X, DeviceManager.LocalDevice.Viewport.Y,
DeviceManager.LocalDevice.Viewport.Width, DeviceManager.LocalDevice.Viewport.Height, 0f, 1f, ref mat, out mouseNear);
Vector3.Unproject(ref mouseFar, DeviceManager.LocalDevice.Viewport.X, DeviceManager.LocalDevice.Viewport.Y,
DeviceManager.LocalDevice.Viewport.Width, DeviceManager.LocalDevice.Viewport.Height, 0f, 1f, ref mat, out mouseFar);
var direction = mouseFar - mouseNear;
var selectionRay = new Ray(mouseNear, direction);
return(mesh.ObjectMesh.Intersects(selectionRay));
}
/// <summary>
/// Used to find which primitive object the mouse is currently hold over for selecting that object
/// </summary>
/// <param name="mousePosition">the mouses location</param>
/// <param name="shape">the primitive that you wish to see if the mouse is currently hovering over</param>
/// <param name="distance">the distance from the mouse to the shape</param>
/// <returns>true is mouse is over that primitive; false otherwise</returns>
public bool RayCalculation(Vector2 mousePosition, MeshClass mesh)
{
var mouseNear = new Vector3(mousePosition, 0.0f);
var mouseFar = new Vector3(mousePosition, 1.0f);
var mat = this.View * this.projection * DeviceManager.LocalDevice.GetTransform(TransformState.World);
Vector3.Unproject(ref mouseNear, DeviceManager.LocalDevice.Viewport.X, DeviceManager.LocalDevice.Viewport.Y,
DeviceManager.LocalDevice.Viewport.Width, DeviceManager.LocalDevice.Viewport.Height, 0f, 1f, ref mat, out mouseNear);
Vector3.Unproject(ref mouseFar, DeviceManager.LocalDevice.Viewport.X, DeviceManager.LocalDevice.Viewport.Y,
DeviceManager.LocalDevice.Viewport.Width, DeviceManager.LocalDevice.Viewport.Height, 0f, 1f, ref mat, out mouseFar);
var direction = mouseFar - mouseNear;
var selectionRay = new Ray(mouseNear, direction);
return mesh.ObjectMesh.Intersects(selectionRay);
}
