/// <summary>
 /// Rotate the object around x y and z in the order of z y and x.
 /// </summary>
 /// <remark>
 /// Values are given in degrees.
 /// </remark>
 /// <param name="original">SDF to rotate.</param>
 /// <param name="xrotation">Rotation around x-axis given in degrees.</param>
 /// <param name="yrotation">Rotation around y-axis given in degrees.</param>
 /// <param name="zrotation">Rotation around z-axis given in degrees.</param>
 public Rotation(SDF original, int xdegrees, int ydegrees, int zdegrees)
 {
     _original = original;
     x         = (float)(xdegrees % 360 * Math.PI) / 180;
     y         = (float)(ydegrees % 360 * Math.PI) / 180;
     z         = (float)(zdegrees % 360 * Math.PI) / 180;
     Initialize();
 }
 /// <summary>
 /// Rotate the object around x y and z in the order of z y and x.
 /// </summary>
 /// <remark>
 /// Values are given in radians.
 /// </remark>
 /// <param name="original">SDF to rotate.</param>
 /// <param name="xrotation">Rotation around x-axis given in radians.</param>
 /// <param name="yrotation">Rotation around y-axis given in radians.</param>
 /// <param name="zrotation">Rotation around z-axis given in radians.</param>
 public Rotation(SDF original, float xrotation, float yrotation, float zrotation)
 {
     _original = original;
     x         = xrotation;
     y         = yrotation;
     z         = zrotation;
     Initialize();
 }
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 /// <summary>
 /// Creates the intersection between two objects.
 /// </summary>
 public Intersection(SDF first, SDF second)
 {
     _fst = first;
     _snd = second;
 }
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 /// <summary>
 /// Moves an object the desired distance.
 /// </summary>
 /// <param name="original">The original object.</param>
 /// <param name="transform">The x, y and z distances used to move the object.</param>
 public Transformation(SDF original, Vec3 transform)
 {
     _original = original;
     _tranform = transform;
 }
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 /// <summary>
 /// Scales a SDF with a given value.
 /// </summary>
 /// <remarks>
 /// A value larger than 1 enlarges the object.
 /// A value between 0 and 1 shrinks the object.
 ///	Negative values have unspecified behavior.
 /// </remarks>
 /// <param name="original">The original SDF.</param>
 /// <param name="scaleValue">The scale value.</param>
 public Scaling(SDF original, float scaleValue)
 {
     _original = original;
     scale     = scaleValue;
 }
 /// <summary>
 /// Substract one object from another.
 /// </summary>
 /// <param name="first">The original object.</param>
 /// <param name="second">The object to be removed.</param>
 public Subtraction(SDF first, SDF second)
 {
     _fst = first;
     _snd = second;
 }
 /// <summary>
 /// Combines two objects.
 /// </summary>
 /// <param name="first">The original object.</param>
 /// <param name="second">The object to be added.</param>
 public Union(SDF first, SDF second)
 {
     _fst = first;
     _snd = second;
 }
 /// <summary>
 /// Applies a displacement function to an object.
 /// </summary>
 /// <remarks>
 /// The displacement function should be determinitic to ensure a correct object.
 /// </remarks>
 /// <param name="original">The original object.</param>
 /// <param name="displacement">The displacement function.</param>
 public Displacement(SDF original, Func <Vec3, float> displacement)
 {
     _original     = original;
     _displacement = displacement;
 }