_PandaDriver.pde

   1 import netP5.*;
   2 import oscP5.*;
   3
   4 /**
   5  *     DOUBLE BLACK DIAMOND        DOUBLE BLACK DIAMOND
   6  *
   7  *         //\\   //\\                 //\\   //\\
   8  *        ///\\\ ///\\\               ///\\\ ///\\\
   9  *        \\\/// \\\///               \\\/// \\\///
  10  *         \\//   \\//                 \\//   \\//
  11  *
  12  *        EXPERTS ONLY!!              EXPERTS ONLY!!
  13  *
  14  * This class implements the output function to the Panda Boards. It
  15  * will be moved into GLucose once stabilized.
  16  */
  17 public class PandaDriver {
  18
  19   // IP address
  20   public final String ip;
  21
  22   // Address to send to
  23   private final NetAddress address;
  24
  25   // Whether board output is enabled
  26   private boolean enabled = false;
  27
  28   // OSC message
  29   private final OscMessage message;
  30
  31   // List of point indices on the board
  32   private final int[] points;
  33
  34   // How many channels are on the panda board
  35   private final static int CHANNELS_PER_BOARD = 8;
  36
  37   // How many cubes per channel xc_PB is configured for
  38   private final static int CUBES_PER_CHANNEL = 4;
  39
  40   // Packet data
  41   private final byte[] packet = new byte[4*352]; // TODO: de-magic-number, UDP related?
  42
  43   public PandaDriver(String ip, Model model, int[][] channelList) {
  44     this.ip = ip;
  45     this.address = new NetAddress(ip, 9001);
  46     message = new OscMessage("/shady/pointbuffer");
  47     List<Integer> pointList = buildMappedList(model, channelList);
  48     points = new int[pointList.size()];
  49     int i = 0;
  50     for (int value : pointList) {
  51       points[i++] = value;
  52     }
  53   }
  54
  55   public void toggle() {
  56     enabled = !enabled;
  57     println("PandaBoard Output/" + ip + ": " + (enabled ? "ON" : "OFF"));
  58   }
  59
  60   private ArrayList<Integer> buildMappedList(Model model, int[][] channelList) {
  61     ArrayList<Integer> points = new ArrayList<Integer>();
  62     for (int chi = 0; chi < CHANNELS_PER_BOARD; ++chi) {
  63       int[] channel = (chi < channelList.length) ? channelList[chi] : new int[]{};
  64       for (int ci = 0; ci < CUBES_PER_CHANNEL; ++ci) {
  65         int cubeNumber = (ci < channel.length) ? channel[ci] : 0;
  66         if (cubeNumber == 0) {
  67           for (int i = 0; i < Cube.POINTS_PER_CUBE; ++i) {
  68             points.add(0);
  69           }
  70         } else {
  71           Cube cube = model.getCubeByRawIndex(cubeNumber);
  72           if (cube == null) {
  73             throw new RuntimeException("Non-zero, non-existing cube specified in channel mapping (" + cubeNumber + ")");
  74           }
  75           final int[] stripOrder = new int[] {
  76             2, 1, 0, 3, 13, 12, 15, 14, 4, 7, 6, 5, 11, 10, 9, 8
  77           };
  78           for (int stripIndex : stripOrder) {
  79             Strip s = cube.strips.get(stripIndex);
  80             for (int j = s.points.size() - 1; j >= 0; --j) {
  81               points.add(s.points.get(j).index);
  82             }
  83           }
  84         }
  85       }
  86     }
  87     return points;
  88   }
  89
  90   public final void send(int[] colors) {
  91     if (!enabled) {
  92       return;
  93     }
  94     int len = 0;
  95     int packetNum = 0;
  96     for (int index : points) {
  97       int c = colors[index];
  98       byte r = (byte) ((c >> 16) & 0xFF);
  99       byte g = (byte) ((c >> 8) & 0xFF);
 100       byte b = (byte) ((c) & 0xFF);
 101       packet[len++] = 0;
 102       packet[len++] = r;
 103       packet[len++] = g;
 104       packet[len++] = b;
 105
 106       // Flush once packet is full buffer size
 107       if (len >= packet.length) {
 108         sendPacket(packetNum++);
 109         len = 0;
 110       }
 111     }
 112
 113     // Flush any remaining data
 114     if (len > 0) {
 115       sendPacket(packetNum++);
 116     }
 117   }
 118
 119   private void sendPacket(int packetNum) {
 120     message.clearArguments();
 121     message.add(packetNum);
 122     message.add(packet.length);
 123     message.add(packet);
 124     try {
 125       OscP5.flush(message, address);
 126     } catch (Exception x) {
 127       x.printStackTrace();
 128     }
 129   }
 130 }
 131