Grizzly.pde

   1 /**
   2  *     DOUBLE BLACK DIAMOND        DOUBLE BLACK DIAMOND
   3  *
   4  *         //\\   //\\                 //\\   //\\
   5  *        ///\\\ ///\\\               ///\\\ ///\\\
   6  *        \\\/// \\\///               \\\/// \\\///
   7  *         \\//   \\//                 \\//   \\//H
   8  *
   9  *        EXPERTS ONLY!!              EXPERTS ONLY!!
  10  *
  11  * If you are an artist, you may ignore this file! It contains
  12  * the code to drive grizzly board outputs.
  13  */
  14 import java.net.*;
  15 GrizzlyOutput[] buildGrizzlies() throws SocketException, UnknownHostException {
  16   return new GrizzlyOutput[] {
  17     new GrizzlyOutput(lx, "192.168.88.100",  0,  0,  0, 39, 38, 40,  0, 37, 35,  0, 21, 20, 22,  0, 33, 32 ),
  18     new GrizzlyOutput(lx, "192.168.88.104",  0, 13, 12,  0,  1,  2,  6,  5,  7,  0,  0,  4,  3,  9, 10, 11 ),
  19     new GrizzlyOutput(lx, "192.168.88.105", 42, 41,  0, 43, 45, 44,  0,  0,  0,  0,  0,  0,  0, 24, 23, 25 ),
  20     new GrizzlyOutput(lx, "192.168.88.107",  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0 ),
  21   };
  22 }
  23
  24 /**
  25  * Grizzly Output, sends packets to one grizzly board with a fixed IP and a number
  26  * of channels.
  27  */
  28 class GrizzlyOutput extends LXDatagramOutput {
  29
  30   public final String ipAddress;
  31
  32   private int frameNumber = 0;
  33
  34   public GrizzlyOutput(LX lx, String ipAddress, int ... cubeIndices) throws UnknownHostException, SocketException {
  35     super(lx);
  36     this.ipAddress = ipAddress;
  37     int channelNum = 0;
  38     for (int rawCubeIndex : cubeIndices) {
  39       if (rawCubeIndex > 0) {
  40         Cube cube = model.getCubeByRawIndex(rawCubeIndex);
  41         addDatagram(new GrizzlyDatagram(this, channelNum, cube).setAddress(ipAddress));
  42       }
  43       ++channelNum;
  44     }
  45     this.enabled.setValue(false);
  46   }
  47
  48   protected void beforeSend(int[] colors) {
  49     ++frameNumber;
  50   }
  51
  52   public int getFrameNumber() {
  53     return this.frameNumber;
  54   }
  55 }
  56
  57 /**
  58  * Datagram to a Grizzlyboard. A simple fixed OSC packet.
  59  */
  60 static class GrizzlyDatagram extends LXDatagram {
  61
  62   private static byte[] oscString(String s) {
  63     int len = s.length();
  64     int padding = (4 - ((len + 1) % 4)) % 4;
  65     byte[] bytes = new byte[len + 1 + padding];
  66     System.arraycopy(s.getBytes(), 0, bytes, 0, len);
  67     for (int i = len; i < bytes.length; ++i) {
  68       bytes[i] = 0;
  69     }
  70     return bytes;
  71   }
  72
  73   private static int oscIntCopy(int i, byte[] buffer, int pos) {
  74     buffer[pos] = (byte) ((i >> 24) & 0xff);
  75     buffer[pos + 1] = (byte) ((i >> 16) & 0xff);
  76     buffer[pos + 2] = (byte) ((i >> 8) & 0xff);
  77     buffer[pos + 3] = (byte) (i & 0xff);
  78     return 4;
  79   }
  80
  81   private final static int[] STRIP_ORDERING = new int[] { 9, 8, 11, 5, 4, 7, 6, 10, 14, 2, 1, 0, 3, 13, 12, 15 };
  82
  83   private static int[] cubePointIndices(Cube cube) {
  84     int[] pointIndices = new int[Cube.POINTS_PER_CUBE - 2];
  85     int pi = 0;
  86     for (int stripIndex : STRIP_ORDERING) {
  87       Strip strip = cube.strips.get(stripIndex);
  88       int stripLen = ((stripIndex == 9) || (stripIndex == 15)) ? 15 : 16;
  89       for (int i = stripLen-1; i >= 0; --i) {
  90         pointIndices[pi++] = strip.points.get(i).index;
  91       }
  92     }
  93     return pointIndices;
  94   }
  95
  96   private final static byte[] OSC_ADDRESS = oscString("/shady/pointbuffer");
  97   private final static byte[] OSC_TYPETAG = oscString(",iiiiibi");
  98
  99   private final static int HEADER_LENGTH = OSC_ADDRESS.length + OSC_TYPETAG.length + 24;
 100   private final static int FOOTER_LENGTH = 4;
 101
 102   private final static int OSC_PORT = 779;
 103
 104   private GrizzlyOutput output;
 105
 106   private int[] pointIndices;
 107
 108   private final int frameNumberPos;
 109
 110   private final int dataPos;
 111
 112   public GrizzlyDatagram(GrizzlyOutput output, int channelNum, Cube cube) {
 113     this(output, channelNum, cubePointIndices(cube));
 114   }
 115
 116   public GrizzlyDatagram(GrizzlyOutput output, int channelNum, int[] pointIndices) {
 117     super(HEADER_LENGTH + 4*pointIndices.length + FOOTER_LENGTH);
 118     setPort(OSC_PORT);
 119
 120     this.output = output;
 121     this.pointIndices = pointIndices;
 122     int dataLength = 4*pointIndices.length;
 123
 124     int pos = 0;
 125
 126     // OSC address
 127     System.arraycopy(OSC_ADDRESS, 0, this.buffer, pos, OSC_ADDRESS.length);
 128     pos += OSC_ADDRESS.length;
 129
 130     // OSC typetag
 131     System.arraycopy(OSC_TYPETAG, 0, this.buffer, pos, OSC_TYPETAG.length);
 132     pos += OSC_TYPETAG.length;
 133     this.frameNumberPos = pos;
 134     pos += oscIntCopy(0, this.buffer, pos); // placeholder for frame number
 135     pos += oscIntCopy(0xDEADBEEF, this.buffer, pos);
 136     pos += oscIntCopy(channelNum, this.buffer, pos);
 137     pos += oscIntCopy(0xFEEDBEEF, this.buffer, pos);
 138     pos += oscIntCopy(dataLength, this.buffer, pos);
 139     pos += oscIntCopy(dataLength, this.buffer, pos);
 140     this.dataPos = pos;
 141
 142     // end header
 143     oscIntCopy(0xBEFFFFEB, this.buffer, this.buffer.length - 4);
 144   }
 145
 146   void onSend(int[] colors) {
 147     oscIntCopy(this.output.getFrameNumber(), this.buffer, frameNumberPos);
 148     int dataIndex = this.dataPos;
 149     for (int index : this.pointIndices) {
 150       color c = (index >= 0) ? colors[index] : 0;
 151       this.buffer[dataIndex] = (byte) 0; // unused, alpha
 152       this.buffer[dataIndex + 1] = (byte) ((c >> 16) & 0xff); // r
 153       this.buffer[dataIndex + 2] = (byte) ((c >> 8) & 0xff); // g
 154       this.buffer[dataIndex + 3] = (byte) (c & 0xff); // b
 155       dataIndex += 4;
 156     }
 157   }
 158 }