103 lines
2.8 KiB
Java
103 lines
2.8 KiB
Java
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package clue7;
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import javax.imageio.ImageIO;
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import java.awt.image.BufferedImage;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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public class Main {
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public static void main(String[] args) {
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try {
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RawReader reader = new RawReader("clue7.tri");
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if (!reader.assertByte(187))
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System.out.println("Incorrect identifier byte!");
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else {
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if (!(reader.assertByte('T') && reader.assertByte('R') && reader.assertByte('I')))
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System.out.println("Could not locate 'TRI' signature");
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else {
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if (!reader.assertByte(2))
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System.out.println("Incorrect format version!");
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else {
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int width = reader.readInt();
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int height = reader.readInt();
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int[] output = new int[width * height];
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// Unused color information byte
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reader.readByte();
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int[] patternTable = new int[255 * 8 / 4];
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for (int i = 0; i < patternTable.length; ++i)
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patternTable[i] = reader.readInt();
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for (int j = 0; j < height; j += 8) {
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for (int i = 0; i < width; i += 8) {
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int patternIndex = reader.readByte();
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int color = (0xFF << 24)
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| (reader.readByte() << 16)
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| (reader.readByte() << 8)
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| (reader.readByte() << 0);
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if (patternIndex == 0)
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for (int x = 0; x < 8; ++x)
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for (int y = 0; y < 8; ++y)
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output[i + x + (j + y) * width] = color;
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else {
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int color2 = (0xFF << 24)
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| (reader.readByte() << 16)
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| (reader.readByte() << 8)
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| (reader.readByte() << 0);
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for (int k = 0; k < 64; ++k) {
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int intIndex = k / 32;
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int bitIndex = k % 32;
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boolean colorSelection = ((patternTable[(patternIndex - 1) * 2 + intIndex] >> (32 - bitIndex)) & 1) == 1;
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int x = k % 8;
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int y = k / 8;
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output[i + x + (j + y) * width] = (!colorSelection ? color : color2);
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}
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}
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}
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}
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BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
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image.setRGB(0, 0, width, height, output, 0, width);
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ImageIO.write(image, "png", new File("clue7_output.png"));
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}
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}
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}
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reader.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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private static class RawReader {
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private FileInputStream stream;
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public RawReader(String path) throws IOException {
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stream = new FileInputStream(path);
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}
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public boolean assertByte(int b) throws IOException {
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return stream.read() == b;
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}
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public int readByte() throws IOException {
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return stream.read();
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}
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public int readInt() throws IOException {
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return (stream.read() << 32)
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| (stream.read() << 16)
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| (stream.read() << 8)
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| (stream.read() << 0);
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}
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public void close() throws IOException {
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stream.close();
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}
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}
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}
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