uk.ac.starlink.ttools.plot

Interface Shader

public interface Shader

Defines an object which can modify an sRGB colour as defined by a scalar parameter.

Since:

5 Jun 2007

Author:

Mark Taylor

Method Summary

Modifier and Type	Method and Description
void	adjustRgba(float[] rgba, float value) Modifies the elements of an sRGB colour definition array in place according to a supplied parameter.
String	getName() Returns a name for this shader.
boolean	isAbsolute() Indicates whether the shading performed by this shader is dependent on the input colour or not.

Method Detail

adjustRgba

void adjustRgba(float[] rgba,
                float value)

Modifies the elements of an sRGB colour definition array in place according to a supplied parameter. The supplied rgba array has 4-elements giving red, green blue, alpha values respetively, each element in the range 0 to 1. The value parameter is a value in the range 0 to 1 which parameterises how the rgba array is to be modified.

Parameters:

rgba - 4-element (red,green,blue,alpha) array

value - adjustment parameter in the range 0..1

isAbsolute

boolean isAbsolute()

Indicates whether the shading performed by this shader is dependent on the input colour or not.

Returns:

true if adjustRgba(float[], float) depends on the input colour

getName

String getName()

Returns a name for this shader.

Returns:

short human-readable label