Example usage for java.awt.image ColorModel getComponents

Introduction

In this page you can find the example usage for java.awt.image ColorModel getComponents.

Prototype

public int[] getComponents(Object pixel, int[] components, int offset) 

Source Link

Document

Returns an array of unnormalized color/alpha components given a pixel in this ColorModel .

Usage

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    byte ff = (byte) 0xff;
    byte[] r = { ff, 0, 0, ff, 0 };
    byte[] g = { 0, ff, 0, ff, 0 };
    byte[] b = { 0, 0, ff, ff, 0 };

    ColorModel cm = new IndexColorModel(3, 5, r, g, b);

    Color[] colors = { new Color(255, 0, 0), new Color(0, 255, 0), new Color(0, 0, 255) };

    for (int i = 0; i < colors.length; i++) {
        int rgb = colors[i].getRGB();
        Object pixel = cm.getDataElements(rgb, null);
        System.out.println(colors[i] + " -> " + ((byte[]) pixel)[0]);
    }/*from   w  w w. ja va2  s.co m*/

    for (byte i = 0; i < 5; i++) {
        int[] unnormalizedComponents = cm.getComponents(i, null, 0);
        System.out.print(i + " -> unnormalized components");
        for (int j = 0; j < unnormalizedComponents.length; j++)
            System.out.print(" " + unnormalizedComponents[j]);
        System.out.println();
    }
}

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From source file:Main.java

public static void main(String[] args) {
    byte ff = (byte) 0xff;
    byte[] r = { ff, 0, 0, ff, 0 };
    byte[] g = { 0, ff, 0, ff, 0 };
    byte[] b = { 0, 0, ff, ff, 0 };

    ColorModel cm = new IndexColorModel(3, 5, r, g, b);

    Color[] colors = { new Color(255, 0, 0), new Color(0, 255, 0), new Color(0, 0, 255), new Color(64, 255, 64),
            new Color(255, 255, 0), new Color(0, 255, 255) };

    for (int i = 0; i < colors.length; i++) {
        float[] normalizedComponents = colors[i].getComponents(null);
        int[] unnormalizedComponents = cm.getUnnormalizedComponents(normalizedComponents, 0, null, 0);
        int rgb = colors[i].getRGB();
        Object pixel = cm.getDataElements(rgb, null);
        System.out.println(colors[i] + " -> " + ((byte[]) pixel)[0]);
    }//from  w w w  . j av  a 2 s  .  c  o  m

    for (byte i = 0; i < 5; i++) {
        int[] unnormalizedComponents = cm.getComponents(i, null, 0);
        System.out.print(i + " -> unnormalized components");
        for (int j = 0; j < unnormalizedComponents.length; j++)
            System.out.print(" " + unnormalizedComponents[j]);
        System.out.println();
    }
}

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From source file:ComponentTest.java

public static void main(String[] args) {
    ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
    ColorModel cm = new ComponentColorModel(cs, new int[] { 5, 6, 5 }, false, false, Transparency.OPAQUE,
            DataBuffer.TYPE_BYTE);

    Color fifty = new Color(cs, new float[] { 1.0f, 1.0f, 1.0f }, 0);
    float[] components = fifty.getComponents(null);
    System.out.print("Original normalized components: ");
    for (int i = 0; i < 3; i++)
        System.out.print(components[i] + " ");
    System.out.println();//w  w w.j av  a2s  .c om
    int[] unnormalized = cm.getUnnormalizedComponents(components, 0, null, 0);
    System.out.print("Original unnormalized components: ");
    for (int i = 0; i < 3; i++)
        System.out.print(unnormalized[i] + " ");
    System.out.println();
    Object pixel = cm.getDataElements(unnormalized, 0, (Object) null);
    System.out.print("Pixel samples: ");
    byte[] pixelBytes = (byte[]) pixel;
    for (int i = 0; i < 3; i++)
        System.out.print(pixelBytes[i] + " ");
    System.out.println();

    unnormalized = cm.getComponents(pixel, null, 0);
    System.out.print("Derived unnormalized components: ");
    for (int i = 0; i < 3; i++)
        System.out.print(unnormalized[i] + " ");
    System.out.println();
    components = cm.getNormalizedComponents(unnormalized, 0, null, 0);
    System.out.print("Derived normalized components: ");
    for (int i = 0; i < 3; i++)
        System.out.print(components[i] + " ");
    System.out.println();
}

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From source file:MainClass.java

public static void main(String[] args) throws Exception {
    ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
    ColorModel cm = new ComponentColorModel(cs, new int[] { 5, 6, 5 }, false, false, Transparency.OPAQUE,
            DataBuffer.TYPE_BYTE);

    Color fifty = new Color(cs, new float[] { 1.0f, 1.0f, 1.0f }, 0);
    float[] components = fifty.getComponents(null);
    System.out.print("Original normalized components: ");
    for (int i = 0; i < 3; i++)
        System.out.print(components[i] + " ");
    System.out.println();/*from   w ww . ja  va2  s  . c om*/
    int[] unnormalized = cm.getUnnormalizedComponents(components, 0, null, 0);
    System.out.print("Original unnormalized components: ");
    for (int i = 0; i < 3; i++)
        System.out.print(unnormalized[i] + " ");
    System.out.println();

    Object pixel = cm.getDataElements(unnormalized, 0, (Object) null);
    System.out.print("Pixel samples: ");
    byte[] pixelBytes = (byte[]) pixel;
    for (int i = 0; i < 3; i++)
        System.out.print(pixelBytes[i] + " ");
    System.out.println();

    unnormalized = cm.getComponents(pixel, null, 0);
    System.out.print("Derived unnormalized components: ");
    for (int i = 0; i < 3; i++)
        System.out.print(unnormalized[i] + " ");
    System.out.println();
    components = cm.getNormalizedComponents(unnormalized, 0, null, 0);
    System.out.print("Derived normalized components: ");
    for (int i = 0; i < 3; i++)
        System.out.print(components[i] + " ");
}

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From source file:org.geoserver.wms.wms_1_1_1.GetMapIntegrationTest.java

@Test
public void testTransparentPaletteOpaqueOutput() throws Exception {
    String url = "wms?LAYERS=" + getLayerId(MockData.TASMANIA_DEM) + "&styles=demTranslucent&"
            + "FORMAT=image%2Fpng&SERVICE=WMS&VERSION=1.1.1" + "&REQUEST=GetMap&SRS=EPSG%3A4326"
            + "&BBOX=145,-43,146,-41&WIDTH=100&HEIGHT=200&bgcolor=0xFF0000";
    BufferedImage bi = getAsImage(url, "image/png");

    ColorModel cm = bi.getColorModel();
    assertTrue(cm instanceof IndexColorModel);
    assertEquals(Transparency.OPAQUE, cm.getTransparency());

    // grab a pixel in the low left corner, should be red (BG color)
    int[] pixel = new int[1];
    bi.getRaster().getPixel(4, 196, pixel);
    int[] color = new int[3];
    cm.getComponents(pixel[0], color, 0);
    assertEquals(255, color[0]);/*from   www .  j a v a2s .c o  m*/
    assertEquals(0, color[1]);
    assertEquals(0, color[2]);

    // a pixel high enough to be solid, should be fully green
    bi.getRaster().getPixel(56, 49, pixel);
    cm.getComponents(pixel[0], color, 0);
    assertEquals(0, color[0]);
    assertEquals(255, color[1]);
    assertEquals(0, color[2]);
}

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From source file:org.geoserver.wms.wms_1_1_1.GetMapIntegrationTest.java

@Test
public void testTransparentPaletteTransparentOutput() throws Exception {
    String url = "wms?LAYERS=" + getLayerId(MockData.TASMANIA_DEM) + "&styles=demTranslucent&"
            + "FORMAT=image%2Fpng&SERVICE=WMS&VERSION=1.1.1" + "&REQUEST=GetMap&SRS=EPSG%3A4326"
            + "&BBOX=145,-43,146,-41&WIDTH=100&HEIGHT=200&transparent=true";
    BufferedImage bi = getAsImage(url, "image/png");

    ColorModel cm = bi.getColorModel();
    assertTrue(cm instanceof IndexColorModel);
    assertEquals(Transparency.TRANSLUCENT, cm.getTransparency());

    // grab a pixel in the low left corner, should be transparent
    int[] pixel = new int[1];
    bi.getRaster().getPixel(4, 196, pixel);
    int[] color = new int[4];
    cm.getComponents(pixel[0], color, 0);
    assertEquals(0, color[3]);/*from   ww  w  .  j  a  v a  2  s .c  om*/

    // a pixel high enough to be solid, should be solid green
    bi.getRaster().getPixel(56, 49, pixel);
    cm.getComponents(pixel[0], color, 0);
    assertEquals(0, color[0]);
    assertEquals(255, color[1]);
    assertEquals(0, color[2]);
    assertEquals(255, color[3]);
}

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From source file:org.geoserver.wms.wms_1_1_1.GetMapIntegrationTest.java

@Test
public void testTransparentPaletteTransparentOutputPng8() throws Exception {
    String url = "wms?LAYERS=" + getLayerId(MockData.TASMANIA_DEM) + "&styles=demTranslucent&"
            + "FORMAT=image%2Fpng8&SERVICE=WMS&VERSION=1.1.1" + "&REQUEST=GetMap&SRS=EPSG%3A4326"
            + "&BBOX=145,-43,146,-41&WIDTH=100&HEIGHT=200&transparent=true";
    BufferedImage bi = getAsImage(url, "image/png; mode=8bit");

    ColorModel cm = bi.getColorModel();
    assertTrue(cm instanceof IndexColorModel);
    assertEquals(Transparency.TRANSLUCENT, cm.getTransparency());

    // grab a pixel in the low left corner, should be transparent
    int[] pixel = new int[1];
    bi.getRaster().getPixel(4, 196, pixel);
    int[] color = new int[4];
    cm.getComponents(pixel[0], color, 0);
    assertEquals(0, color[3]);/* w w  w .  j  a v a 2 s. c om*/

    // a pixel high enough to be solid, should be solid green
    bi.getRaster().getPixel(56, 49, pixel);
    cm.getComponents(pixel[0], color, 0);
    assertEquals(0, color[0]);
    assertEquals(255, color[1]);
    assertEquals(0, color[2]);
    assertEquals(255, color[3]);
}

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