108 lines
2.5 KiB
Java
108 lines
2.5 KiB
Java
/*
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* This file is part of ComputerCraft - http://www.computercraft.info
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* Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
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* Send enquiries to dratcliffe@gmail.com
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*/
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package dan200.computercraft.shared.util;
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import net.minecraft.nbt.NBTTagCompound;
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public class Palette
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{
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private static final int PALETTE_SIZE = 16;
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private final double[][] colours = new double[PALETTE_SIZE][3];
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public static final Palette DEFAULT = new Palette();
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public Palette()
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{
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// Get the default palette
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resetColours();
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}
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public void setColour( int i, double r, double g, double b )
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{
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if( i >= 0 && i < colours.length )
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{
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colours[i][0] = r;
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colours[i][1] = g;
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colours[i][2] = b;
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}
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}
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public void setColour( int i, Colour colour )
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{
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setColour( i, colour.getR(), colour.getG(), colour.getB() );
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}
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public double[] getColour( int i )
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{
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if( i >= 0 && i < colours.length )
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{
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return colours[i];
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}
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return null;
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}
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public void resetColour( int i )
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{
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if( i >= 0 && i < colours.length )
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{
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setColour( i, Colour.values()[i] );
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}
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}
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public void resetColours()
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{
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for( int i = 0; i < Colour.values().length; i++ )
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{
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resetColour( i );
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}
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}
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public static int encodeRGB8( double[] rgb )
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{
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int r = (int) (rgb[0] * 255) & 0xFF;
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int g = (int) (rgb[1] * 255) & 0xFF;
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int b = (int) (rgb[2] * 255) & 0xFF;
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return (r << 16) | (g << 8) | b;
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}
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public static double[] decodeRGB8( int rgb )
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{
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return new double[] {
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((rgb >> 16) & 0xFF) / 255.0f,
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((rgb >> 8) & 0xFF) / 255.0f,
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(rgb & 0xFF) / 255.0f,
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};
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}
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public NBTTagCompound writeToNBT( NBTTagCompound nbt )
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{
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int[] rgb8 = new int[colours.length];
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for( int i = 0; i < colours.length; i++ )
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{
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rgb8[i] = encodeRGB8( colours[i] );
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}
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nbt.putIntArray( "term_palette", rgb8 );
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return nbt;
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}
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public void readFromNBT( NBTTagCompound nbt )
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{
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if( !nbt.contains( "term_palette" ) ) return;
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int[] rgb8 = nbt.getIntArray( "term_palette" );
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if( rgb8.length != colours.length ) return;
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for( int i = 0; i < colours.length; i++ )
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{
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colours[i] = decodeRGB8( rgb8[i] );
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}
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}
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}
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