UVWTransform.osl

// An UVW coordinate tranfrormation tool
// UVWTransform.osl by Zap Andersson
// Modified: 2019-11-27
// Copyright 2019 Autodesk Inc, All rights reserved. This file is licensed under Apache 2.0 license
//    https://github.com/ADN-DevTech/3dsMax-OSL-Shaders/blob/master/LICENSE.txt
// Modified by Saul Espinosa for Redshift Renderer 2021-01-21 Added Extra Page Metadata

shader UVWTransform
[[ 
   string label = "UVW Transform",
   string category = "UVW Coordinates",
   string version  = "2.1" 
]]
(
	point  uvwInput = point(u, v, 0)
	[[ 
	string label = "Input UVW"
	]],
	
	float  Scale = 1.0
	[[ 
	string page = "Adjustments" ,
	float min = 0, float max = 25
	]],
	
	vector Tiling = 1.0
	[[ 
	string page = "Adjustments" 
	]],
	
	vector Offset = 0.0
	[[ 
	string page = "Adjustments" 
	]],
	
	int    Wrap   = 0
	[[ 
	string widget = "checkBox",
	string page = "Adjustments",
	int connectable = 0,
	]],
	
	float  Rotate = 0.0
	[[
	string page = "Rotation",
	float min = -180, float max = 180
	]],
	
	point  RotCenter = point(0.5,0.5,0)
	[[ 
	string label = "Rotation Center",
	string page = "Rotation"
	]],
	
	vector RotAxis   = vector(0.0,0.0,1.0)
	[[ 
	string label = "Rotation Axis",
	string page = "Rotation"
	]],

// UVW Output
	output point UVW = 0
)
{
	vector worldScale = 1.0;
	point Input = select(vector(u,v,0), uvwInput, isconnected(uvwInput));

	UVW = rotate(Input - Offset, radians(Rotate), RotCenter, RotCenter + RotAxis) * Tiling / worldScale / Scale;

	if (Wrap)
	UVW -= floor(UVW);
}