//
// 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 Vector4Node Conditional(BooleanNode condition, Vector4Node trueCase, Vector4Node falseCase)
{
return(Function <Vector4Node>(ExpressionNodeType.Conditional, condition, trueCase, falseCase));
}
public static Vector4Node Scale(Vector4Node val1, ScalarNode val2)
{
return(Function <Vector4Node>(ExpressionNodeType.Scale, val1, val2));
}
public static Vector4Node Transform(Vector4Node val1, Matrix4x4Node val2)
{
return(Function <Vector4Node>(ExpressionNodeType.Transform, val1, val2));
}
public static Vector4Node Mod(Vector4Node val1, Vector4Node val2)
{
return(Function <Vector4Node>(ExpressionNodeType.Modulus, val1, val2));
}
public static Vector4Node Normalize(Vector4Node val)
{
return(Function <Vector4Node>(ExpressionNodeType.Normalize, val));
}
public static Vector4Node Lerp(Vector4Node val1, Vector4Node val2, ScalarNode progress)
{
return(Function <Vector4Node>(ExpressionNodeType.Lerp, val1, val2, progress));
}
public static ScalarNode LengthSquared(Vector4Node val)
{
return(Function <ScalarNode>(ExpressionNodeType.LengthSquared, val));
}
public static ScalarNode DistanceSquared(Vector4Node val1, Vector4Node val2)
{
return(Function <ScalarNode>(ExpressionNodeType.DistanceSquared, val1, val2));
}
public static Vector4Node Clamp(Vector4Node val, Vector4Node min, Vector4Node max)
{
return(Function <Vector4Node>(ExpressionNodeType.Clamp, val, min, max));
}
public static Vector4Node Abs(Vector4Node val)
{
return(Function <Vector4Node>(ExpressionNodeType.Absolute, val));
}