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Color.java
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Color.java
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package org.newdawn.slick;
import org.lwjgl.opengl.GL11;
/**
* A simple wrapper round the values required for a colour
*
* @author Kevin Glass
*/
public class Color {
/** The fixed colour white */
public static final Color white = new Color(1.0f,1.0f,1.0f,1.0f);
/** The fixed colour yellow */
public static final Color yellow = new Color(1.0f,1.0f,0,1.0f);
/** The fixed colour red */
public static final Color red = new Color(1.0f,0,0,1.0f);
/** The fixed colour blue */
public static final Color blue = new Color(0,0,1.0f,1.0f);
/** The fixed colour green */
public static final Color green = new Color(0,1.0f,0,1.0f);
/** The fixed colour black */
public static final Color black = new Color(0,0,0,1.0f);
/** The fixed colour gray */
public static final Color gray = new Color(0.5f,0.5f,0.5f,1.0f);
/** The red component of the colour */
public float r;
/** The green component of the colour */
public float g;
/** The blue component of the colour */
public float b;
/** The alpha component of the colour */
public float a;
/**
* Create a 3 component colour
*
* @param r The red component of the colour (0.0 -> 1.0)
* @param g The green component of the colour (0.0 -> 1.0)
* @param b The blue component of the colour (0.0 -> 1.0)
*/
public Color(float r,float g,float b) {
this.r = r;
this.g = g;
this.b = b;
this.a = 1;
}
/**
* Create a 3 component colour
*
* @param r The red component of the colour (0.0 -> 1.0)
* @param g The green component of the colour (0.0 -> 1.0)
* @param b The blue component of the colour (0.0 -> 1.0)
* @param a The alpha component of the colour (0.0 -> 1.0)
*/
public Color(float r,float g,float b,float a) {
this.r = r;
this.g = g;
this.b = b;
this.a = a;
}
/**
* Create a 3 component colour
*
* @param r The red component of the colour (0 -> 255)
* @param g The green component of the colour (0 -> 255)
* @param b The blue component of the colour (0 -> 255)
*/
public Color(int r,int g,int b) {
this.r = r / 255.0f;
this.g = g / 255.0f;
this.b = b / 255.0f;
this.a = 1;
}
/**
* Create a 3 component colour
*
* @param r The red component of the colour (0 -> 255)
* @param g The green component of the colour (0 -> 255)
* @param b The blue component of the colour (0 -> 255)
* @param a The alpha component of the colour (0 -> 255)
*/
public Color(int r,int g,int b,int a) {
this.r = r / 255.0f;
this.g = g / 255.0f;
this.b = b / 255.0f;
this.a = a / 255.0f;
}
/**
* Bind this colour to the GL context
*/
public void bind() {
GL11.glColor4f(r,g,b,a);
}
/**
* @see java.lang.Object#toString()
*/
public String toString() {
return "Color ("+r+","+g+","+b+","+a+")";
}
/**
* Make a darker instance of this colour
*
* @return The darkver version of this colour
*/
public Color darker() {
Color temp = new Color(r * 0.5f,g * 0.5f,b * 0.5f,a);
return temp;
}
}