Jitter.osl

// Index based Randomizer
// Original idea by Zap Andersson, modified by Saul Espinosa for Redshift 3d
// This file is licensed under Apache 2.0 license
// Modified 2023/2/3 - Added UI changes & More Color Jitter Options

shader rsJitter
[[  string help = "Randomizes Color, Float, Vector inputs using UserData",
    string label = "Jitter" ]]
(
        int   UserData   = 0 [[string page = "Input"]],
        color ColorInput = 0 [[string page = "Input"]],

	/// Color Values                 
        float HueMin   = 0.0 [[string label = "Hue Min", float min = -1, float max = 1, string page = "Color Jitter"]],
        float HueMax   = 0.0 [[string label = "Hue Max", float min = -1, float max = 1, string page = "Color Jitter"]],  
        float SatMin    = 0.0 [[string label = "Saturation Min", float min = -1, float max = 1, string page = "Color Jitter"]],
        float SatMax    = 0.0 [[string label = "Saturation Max", float min = -1, float max = 1, string page = "Color Jitter"]],
        float ValMin   = 0.0 [[string label = "Value Min", float min = -1, float max = 1, string page = "Color Jitter"]],
        float ValMax   = 0.0 [[string label = "Value Max", float min = -1, float max = 1, string page = "Color Jitter"]],        
        float TempMin   = 0.0 [[string label = "Temperature Min", float min = -.5, float max = .5, string page = "Color Jitter"]],
        float TempMax   = 0.0 [[string label = "Temperature Max", float min = -.5, float max = .5, string page = "Color Jitter"]],         
        float TintMin   = 0.0 [[string label = "Tint Min", float min = -.5, float max = .5, string page = "Color Jitter"]],
        float TintMax   = 0.0 [[string label = "Tint Max", float min = -.5, float max = .5, string page = "Color Jitter"]], 
        int   ColorSeed  = 1 [[ int min = 0, int max = 100, string page = "Color Jitter"]],
	
	/// Float Values
        float FloatMin   = 0.0 [[string label = "Float Min", float min = 0, float max = 1, string page = "Float Jitter"]],
        float FloatMax   = 1.0 [[string label = "Float Max", float min = 0, float max = 1, string page = "Float Jitter"]],
        int   FloatSeed  = 1 [[string label = "Float Seed", int min = 0, int max = 100, string page = "Float Jitter"]],
	
	/// Vector Values
        vector VectorMin   = 0.0 [[string label = "Vector Min", vector min = 0, vector max = 100, string page = "Vector Jitter"]],
        vector VectorMax   = 1.0 [[string label = "Vector Max", vector min = 0, vector max = 100, string page = "Vector Jitter"]],
        int   VectorSeed  = 1 [[string label = "Vector Seed", int min = 0, int max = 100, string page = "Vector Jitter"]],
	/// Define Outputs			
        output color ColorOut = 0.0,
        output float FloatOut = 0.0,
        output vector VectorOut = 0.0,
)
{

        // Output Values
        float ratio1 = noise("cell", vector(abs(UserData), abs(ColorSeed), 10));
        float ratio2 = noise("cell", vector(abs(UserData), abs(ColorSeed), 11));
        float ratio3 = noise("cell", vector(abs(UserData), abs(ColorSeed), 12));
        float ratio4 = noise("cell", vector(abs(UserData), abs(ColorSeed), 13));
        float ratio5 = noise("cell", vector(abs(UserData), abs(ColorSeed), 14));
        float ratio6 = noise("cell", vector(abs(UserData), abs(FloatSeed), 10));
        float ratio7 = noise("cell", vector(abs(UserData), abs(VectorSeed), 10));  
        float HueShift = mix(HueMin, HueMax, ratio1);
        float SatShift = mix(SatMin, SatMax, ratio2);
        float ValShift = mix(ValMin, ValMax, ratio3);  
        float TempShift = mix(TempMin, TempMax, ratio4);
        float TintShift = mix(TintMin, TintMax, ratio5);
         

        color Out = transformc("rgb", "hsv", ColorInput);      
        Out[0] += HueShift;
        Out[1] += SatShift;    
        Out[2] += ValShift;
        Out = transformc("hsv", "rgb", Out);  
        
        // Temp & Tint Shifts
        Out[0] += TempShift;
        Out[1] += TintShift;
        Out[2] -= TempShift;
        ColorOut = Out;

        // Output Float & Vector
        FloatOut = mix(FloatMin, FloatMax, ratio6);
        VectorOut = mix(VectorMin, VectorMax, ratio7);
}