grayscalepalette.java

来自「基于java的3d开发库。对坐java3d的朋友有很大的帮助。」· Java 代码 · 共 40 行

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//=-------------------------------------------------------------------------=
//= Module history:                                                         =
//= - December 18 - Oscar Chavarro: Original base version                   =
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package vsdk.toolkit.media;

import vsdk.toolkit.common.ColorRgb;

/**
Represents a linear scale gray palette.
*/
public class GrayScalePalette extends RGBProceduralColorPalette {
    /// Check the general attribute description in superclass Entity.
    public static final long serialVersionUID = 20061218L;

    public GrayScalePalette() {
        super();
    }

    public int selectNearestIndexToRgb(ColorRgb c)
    {
        if ( !pure ) {
            return super.selectNearestIndexToRgb(c);
        }

        double gray = (c.r + c.g + c.b) / 3;

        if ( gray < 0.0 ) gray = 0.0;
        if ( gray > 1.0 ) gray = 1.0;

        return (int)(gray*(colors.size()-1));
    }
}

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//= EOF                                                                     =
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