protected void setDrawingColor(int ox, int oy, boolean setBackground) {
   // IJ.log("setDrawingColor: "+setBackground+this);
   int type = imp.getType();
   int[] v = imp.getPixel(ox, oy);
   switch (type) {
     case ImagePlus.GRAY8:
       {
         if (setBackground) setBackgroundColor(getColor(v[0]));
         else setForegroundColor(getColor(v[0]));
         break;
       }
     case ImagePlus.GRAY16:
     case ImagePlus.GRAY32:
       {
         double min = imp.getProcessor().getMin();
         double max = imp.getProcessor().getMax();
         double value = (type == ImagePlus.GRAY32) ? Float.intBitsToFloat(v[0]) : v[0];
         int index = (int) (255.0 * ((value - min) / (max - min)));
         if (index < 0) index = 0;
         if (index > 255) index = 255;
         if (setBackground) setBackgroundColor(getColor(index));
         else setForegroundColor(getColor(index));
         break;
       }
     case ImagePlus.COLOR_RGB:
     case ImagePlus.COLOR_256:
       {
         Color c = new Color(v[0], v[1], v[2]);
         if (setBackground) setBackgroundColor(c);
         else setForegroundColor(c);
         break;
       }
   }
   Color c;
   if (setBackground) c = Toolbar.getBackgroundColor();
   else {
     c = Toolbar.getForegroundColor();
     imp.setColor(c);
   }
   IJ.showStatus("(" + c.getRed() + ", " + c.getGreen() + ", " + c.getBlue() + ")");
 }
    void apply(ImagePlus imp, ImageProcessor ip) {
      // this.setCursor(wait);
      // IJ.showStatus("Bandpassing slice "+previousSlice);
      java.awt.Color col;

      if (invert.getState()) col = Toolbar.getForegroundColor();
      else col = Toolbar.getBackgroundColor();

      ip.setColor(col);

      int fill = ip.BLACK;
      int keep = 0;

      if (bandPassH.getState() && bandPassS.getState() && bandPassB.getState()) { // PPP All pass
        for (int j = 0; j < numPixels; j++) {
          int hue = hSource[j] & 0xff;
          int sat = sSource[j] & 0xff;
          int bri = bSource[j] & 0xff;
          if (((hue < minHue) || (hue > maxHue))
              || ((sat < minSat) || (sat > maxSat))
              || ((bri < minBri) || (bri > maxBri))) fillMask[j] = fill;
          else fillMask[j] = keep;
        }
      } else if (!bandPassH.getState()
          && !bandPassS.getState()
          && !bandPassB.getState()) { // SSS All stop
        for (int j = 0; j < numPixels; j++) {
          int hue = hSource[j] & 0xff;
          int sat = sSource[j] & 0xff;
          int bri = bSource[j] & 0xff;
          if (((hue >= minHue) && (hue <= maxHue))
              || ((sat >= minSat) && (sat <= maxSat))
              || ((bri >= minBri) && (bri <= maxBri))) fillMask[j] = fill;
          else fillMask[j] = keep;
        }
      } else if (bandPassH.getState() && bandPassS.getState() && !bandPassB.getState()) { // PPS
        for (int j = 0; j < numPixels; j++) {
          int hue = hSource[j] & 0xff;
          int sat = sSource[j] & 0xff;
          int bri = bSource[j] & 0xff;
          if (((hue < minHue) || (hue > maxHue))
              || ((sat < minSat) || (sat > maxSat))
              || ((bri >= minBri) && (bri <= maxBri))) fillMask[j] = fill;
          else fillMask[j] = keep;
        }
      } else if (!bandPassH.getState() && !bandPassS.getState() && bandPassB.getState()) { // SSP
        for (int j = 0; j < numPixels; j++) {
          int hue = hSource[j] & 0xff;
          int sat = sSource[j] & 0xff;
          int bri = bSource[j] & 0xff;
          if (((hue >= minHue) && (hue <= maxHue))
              || ((sat >= minSat) && (sat <= maxSat))
              || ((bri < minBri) || (bri > maxBri))) fillMask[j] = fill;
          else fillMask[j] = keep;
        }
      } else if (bandPassH.getState() && !bandPassS.getState() && !bandPassB.getState()) { // PSS
        for (int j = 0; j < numPixels; j++) {
          int hue = hSource[j] & 0xff;
          int sat = sSource[j] & 0xff;
          int bri = bSource[j] & 0xff;
          if (((hue < minHue) || (hue > maxHue))
              || ((sat >= minSat) && (sat <= maxSat))
              || ((bri >= minBri) && (bri <= maxBri))) fillMask[j] = fill;
          else fillMask[j] = keep;
        }
      } else if (!bandPassH.getState() && bandPassS.getState() && bandPassB.getState()) { // SPP
        for (int j = 0; j < numPixels; j++) {
          int hue = hSource[j] & 0xff;
          int sat = sSource[j] & 0xff;
          int bri = bSource[j] & 0xff;
          if (((hue >= minHue) && (hue <= maxHue))
              || ((sat < minSat) || (sat > maxSat))
              || ((bri < minBri) || (bri > maxBri))) fillMask[j] = fill;
          else fillMask[j] = keep;
        }
      } else if (!bandPassH.getState() && bandPassS.getState() && !bandPassB.getState()) { // SPS
        for (int j = 0; j < numPixels; j++) {
          int hue = hSource[j] & 0xff;
          int sat = sSource[j] & 0xff;
          int bri = bSource[j] & 0xff;
          if (((hue >= minHue) && (hue <= maxHue))
              || ((sat < minSat) || (sat > maxSat))
              || ((bri >= minBri) && (bri <= maxBri))) fillMask[j] = fill;
          else fillMask[j] = keep;
        }
      } else if (bandPassH.getState() && !bandPassS.getState() && bandPassB.getState()) { // PSP
        for (int j = 0; j < numPixels; j++) {
          int hue = hSource[j] & 0xff;
          int sat = sSource[j] & 0xff;
          int bri = bSource[j] & 0xff;
          if (((hue < minHue) || (hue > maxHue))
              || ((sat >= minSat) && (sat <= maxSat))
              || ((bri < minBri) || (bri > maxBri))) fillMask[j] = fill;
          else fillMask[j] = keep;
        }
      }

      ip.fill(fillMask);

      if (threshold.getState()) {
        ip.invert();
        for (int j = 0; j < numPixels; j++) {
          if (fillMask[j] == fill) fillMask[j] = keep;
          else fillMask[j] = fill;
        }
        ip.fill(fillMask);
        ip.invert();
      }
    }