Java by API/java.awt.image/ColorModel
Содержание
- 1 ColorModel: getComponents(int pixel, int[] components, int offset)
- 2 ColorModel: getDataElements(int rgb, Object pixel)
- 3 ColorModel: getNormalizedComponents(int[] components, int offset, float[] normComponents, int normOffset)
- 4 ColorModel: getUnnormalizedComponents(float[] normComponents, int normOffset, int[] components, int offset)
ColorModel: getComponents(int pixel, int[] components, int offset)
import java.awt.Color;
import java.awt.image.ColorModel;
import java.awt.image.IndexColorModel;
public class MainClass {
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]);
}
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();
}
}
}
ColorModel: getDataElements(int rgb, Object pixel)
import java.awt.Color;
import java.awt.image.ColorModel;
import java.awt.image.IndexColorModel;
public class MainClass {
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]);
}
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();
}
}
}
ColorModel: getNormalizedComponents(int[] components, int offset, float[] normComponents, int normOffset)
import java.awt.Color;
import java.awt.Transparency;
import java.awt.color.ColorSpace;
import java.awt.image.ColorModel;
import java.awt.image.ruponentColorModel;
import java.awt.image.DataBuffer;
public class MainClass {
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();
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] + " ");
}
}
ColorModel: getUnnormalizedComponents(float[] normComponents, int normOffset, int[] components, int offset)
import java.awt.Color;
import java.awt.Transparency;
import java.awt.color.ColorSpace;
import java.awt.image.ColorModel;
import java.awt.image.ruponentColorModel;
import java.awt.image.DataBuffer;
public class MainClass {
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();
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] + " ");
}
}