//
// Helper functions
//
internal static T CreateExpressionNode <T>() where T : class
{
T newNode;
if (typeof(T) == typeof(BooleanNode))
{
newNode = new BooleanNode() as T;
}
else if (typeof(T) == typeof(ScalarNode))
{
newNode = new ScalarNode() as T;
}
else if (typeof(T) == typeof(Vector2Node))
{
newNode = new Vector2Node() as T;
}
else if (typeof(T) == typeof(Vector3Node))
{
newNode = new Vector3Node() as T;
}
else if (typeof(T) == typeof(Vector4Node))
{
newNode = new Vector4Node() as T;
}
else if (typeof(T) == typeof(ColorNode))
{
newNode = new ColorNode() as T;
}
else if (typeof(T) == typeof(QuaternionNode))
{
newNode = new QuaternionNode() as T;
}
else if (typeof(T) == typeof(Matrix3x2Node))
{
newNode = new Matrix3x2Node() as T;
}
else if (typeof(T) == typeof(Matrix4x4Node))
{
newNode = new Matrix4x4Node() as T;
}
else
{
throw new Exception("unexpected type");
}
return(newNode);
}
public static QuaternionNode Conditional(BooleanNode condition, QuaternionNode trueCase, QuaternionNode falseCase)
{
return(Function <QuaternionNode>(ExpressionNodeType.Conditional, condition, trueCase, falseCase));
}
/// <summary> Spherically interpolates between two quaternions. </summary>
/// <param name="val1">Quaternion source value 1.</param>
/// <param name="val2">Quaternion source value 2.</param>
/// <param name="progress">A value between 0 and 1.0 indicating the weight of val2.</param>
public static QuaternionNode Slerp(QuaternionNode val1, QuaternionNode val2, ScalarNode progress)
{
return(Function <QuaternionNode>(ExpressionNodeType.Slerp, val1, val2, progress));
}
public static QuaternionNode Normalize(QuaternionNode val)
{
return(Function <QuaternionNode>(ExpressionNodeType.Normalize, val));
}
public static ScalarNode LengthSquared(QuaternionNode val)
{
return(Function <ScalarNode>(ExpressionNodeType.LengthSquared, val));
}
/// <summary> Concatenates two Quaternions; the result represents the first rotation followed by the second rotation. </summary>
/// <param name="val1">The first quaternion rotation in the series.</param>
/// <param name="val2">The second quaternion rotation in the series.</param>
public static QuaternionNode Concatenate(QuaternionNode val1, QuaternionNode val2)
{
return(Function <QuaternionNode>(ExpressionNodeType.Concatenate, val1, val2));
}