//
// 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 ColorNode Conditional(BooleanNode condition, ColorNode trueCase, ColorNode falseCase)
{
return(Function <ColorNode>(ExpressionNodeType.Conditional, condition, trueCase, falseCase));
}
/// <summary> Linearly interpolates between two colors in the RBG color space. </summary>
/// <param name="val1">Color source value 1.</param>
/// <param name="val2">Color source value 2.</param>
/// <param name="progress">A value between 0 and 1.0 indicating the weight of val2.</param>
public static ColorNode ColorLerpRgb(ColorNode val1, ColorNode val2, ScalarNode progress)
{
return(Function <ColorNode>(ExpressionNodeType.ColorLerpRgb, val1, val2, progress));
}