/// <summary>
/// Gets line (in camera space) from point on near plane to corresponding point on far plane.
/// </summary>
public static Line3d Unproject(this ICameraProjection self, Ndc2d p)
{
return(new Line3d(
self.UnprojectPointOnNearPlane(p),
self.UnprojectPointOnFarPlane(p)
));
}
/// <summary>
/// Scales clipping window by given factor.
/// </summary>
public static void Zoom(this ICameraProjection self, V2d center, double factor)
{
if (factor <= 0.0)
{
throw new ArgumentException("Factor needs to be greater than 0.0, but is " + factor + ".", "factor");
}
var box = self.ClippingWindow;
box.Min.X = (box.Min.X - center.X) * factor + center.X;
box.Min.Y = (box.Min.Y - center.Y) * factor + center.Y;
box.Max.X = (box.Max.X - center.X) * factor + center.X;
box.Max.Y = (box.Max.Y - center.Y) * factor + center.Y;
self.ClippingWindow = box;
}
/// <summary>
/// Gets normalized device coordinates from point in camera space.
/// </summary>
public static Ndc3d TransformPos(this ICameraProjection self, V3d posInCameraSpace)
{
return(new Ndc3d(self.ProjectionTrafo.Forward.TransformPosProj(posInCameraSpace)));
}
/// <summary>
/// Gets point on far plane (in camera space) from point in normalized device coordinates.
/// </summary>
public static V3d UnprojectPointOnFarPlane(this ICameraProjection self, Ndc2d p)
{
return(self.ProjectionTrafo.Backward.TransformPosProj(new V3d(p.Position, 1.0)));
}
/// <summary>
/// Gets point (in camera space) from point in normalized device coordinates.
/// </summary>
public static V3d Unproject(this ICameraProjection self, Ndc3d p)
{
return(self.ProjectionTrafo.Backward.TransformPosProj(p.Position));
}
/// <summary> /// Gets point on near plane (in camera space) from point in normalized device coordinates. /// </summary> public static V3d UnprojectPointOnNearPlane(this ICameraProjection self, Ndc2d p) => self.ProjectionTrafo.Backward.TransformPosProj(new V3d(p.Position, 0.0));
