How to use

setGrayChannel

method

in

org.geotools.styling.ChannelSelection

  @Override
  public void setTo(
      org.geotools.styling.ChannelSelection sel,
      org.geotools.styling.SelectedChannelType chan) {
    sel.setGrayChannel(chan);
  }
},

protected ChannelSelection copy(ChannelSelection channelSelection) {
  if (channelSelection == null) return null;
  SelectedChannelType[] channels = copy(channelSelection.getSelectedChannels());
  ChannelSelection copy = sf.createChannelSelection(channels);
  copy.setGrayChannel(copy(channelSelection.getGrayChannel()));
  copy.setRGBChannels(copy(channelSelection.getRGBChannels()));
  return copy;
}

  /**
   *
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   *
   * @generated modifiable
   */
  public Object parse(ElementInstance instance, Node node, Object value) throws Exception {

    ChannelSelection cs = styleFactory.createChannelSelection(null);

    if (node.hasChild("GrayChannel")) {
      cs.setGrayChannel((SelectedChannelType) node.getChildValue("GrayChannel"));
    } else {
      SelectedChannelType[] rgb =
          new SelectedChannelType[] {
            (SelectedChannelType) node.getChildValue("RedChannel"),
            (SelectedChannelType) node.getChildValue("GreenChannel"),
            (SelectedChannelType) node.getChildValue("BlueChannel")
          };
      cs.setRGBChannels(rgb);
    }

    return cs;
  }
}

  @Override
  public void setTo(
      org.geotools.styling.ChannelSelection sel,
      org.geotools.styling.SelectedChannelType chan) {
    sel.setGrayChannel(chan);
  }
},

  @Override
  public void handle(YamlObject<?> obj, YamlParseContext context) {
    YamlMap map = obj.map();
    if (map.has(Band.GRAY.key)) {
      if (map.has(Band.RED.key) || map.has(Band.GREEN.key) || map.has(Band.BLUE.key))
        throw new IllegalArgumentException("grey and RGB can not be combined");
      SelectedChannelType gray = factory.style.selectedChannelType((String) null, null);
      selection.setGrayChannel(gray);
      parse(Band.GRAY, gray, map, context);
    } else {
      if (!(map.has(Band.RED.key) && map.has(Band.GREEN.key) && map.has(Band.BLUE.key)))
        throw new IllegalArgumentException("all of red green and blue must be preset");
      SelectedChannelType red = factory.style.selectedChannelType((String) null, null);
      SelectedChannelType green = factory.style.selectedChannelType((String) null, null);
      SelectedChannelType blue = factory.style.selectedChannelType((String) null, null);
      selection.setRGBChannels(red, green, blue);
      parse(Band.RED, red, map, context);
      parse(Band.GREEN, green, map, context);
      parse(Band.BLUE, blue, map, context);
    }
  }
}

public void apply() {
  if (channel != null) {
    if(guiChkRGB.isSelected()){
      SelectedChannelType[] sct = new SelectedChannelType[3];
      sct[0] = guiRed.getEdited();
      sct[1] = guiGreen.getEdited();
      sct[2] = guiBlue.getEdited();
    }else{
      channel.setGrayChannel(guiGray.getEdited());
    }
  }
}

chTypeGray.setChannelName("1");
chTypeGray.setContrastEnhancement(cntEnh);
chSel.setGrayChannel(chTypeGray);
rsb_1.setChannelSelection(chSel);
rsb_1.setOpacity(sldBuilder.literalExpression(1.0));

chTypeGray.setChannelName("1");
chTypeGray.setContrastEnhancement(cntEnh);
chSel.setGrayChannel(chTypeGray);
rsb_1.setChannelSelection(chSel);

chSel.setGrayChannel(chTypeGray);

chTypeGray.setContrastEnhancement(cntEnh);
chSel.setGrayChannel(chTypeGray);

protected ChannelSelection copy(ChannelSelection channelSelection) {
  if( channelSelection == null ) return null;
   SelectedChannelType[] channels = copy( channelSelection.getSelectedChannels() );
  ChannelSelection copy = sf.createChannelSelection( channels);
  copy.setGrayChannel( copy( channelSelection.getGrayChannel() ));
  copy.setRGBChannels( copy( channelSelection.getRGBChannels() ));
  return copy;
}

chSel.setGrayChannel(chTypeGray);
rsb_1.setChannelSelection(chSel);
rsb_1.setOpacity(sldBuilder.literalExpression(1.0));
chSel_2.setGrayChannel(chTypeGray_2);
rsb_2.setChannelSelection(chSel_2);
rsb_2.setOpacity(sldBuilder.literalExpression(1.0));
chSel_3.setGrayChannel(chTypeGray_3);
rsb_3.setChannelSelection(chSel_3);
rsb_3.setOpacity(sldBuilder.literalExpression(1.0));
chSel_4.setGrayChannel(chTypeGray_4);
rsb_4.setChannelSelection(chSel_4);
chSel_4f.setGrayChannel(chTypeGray_4f);
rsb_4f.setChannelSelection(chSel_4f);
chSel_5.setGrayChannel(chTypeGray_5);
rsb_5.setChannelSelection(chSel_5);
chSel_5f.setGrayChannel(chTypeGray_5f);
rsb_5f.setChannelSelection(chSel_5f);
chSel_5g.setGrayChannel(chTypeGray_5g);
rsb_5g.setChannelSelection(chSel_5g);
chSel_5c.setGrayChannel(chTypeGray_5c);
rsb_5c.setChannelSelection(chSel_5c);

  /**
   * <!-- begin-user-doc --> <!-- end-user-doc -->
   *
   * @generated modifiable
   */
  public Object parse(ElementInstance instance, Node node, Object value)
    throws Exception {
    
    ChannelSelection cs = styleFactory.createChannelSelection(null);
    
    if (node.hasChild("GrayChannel")) {
      cs.setGrayChannel((SelectedChannelType) node.getChildValue("GrayChannel"));
    }
    else {
      SelectedChannelType[] rgb = new SelectedChannelType[] {
        (SelectedChannelType) node.getChildValue("RedChannel"),
        (SelectedChannelType) node.getChildValue("GreenChannel"),
        (SelectedChannelType) node.getChildValue("BlueChannel")
      };
      cs.setRGBChannels(rgb);
    }
    
    return cs;
  }
}

  /**
   * <!-- begin-user-doc --> <!-- end-user-doc -->
   *
   * @generated modifiable
   */
  public Object parse(ElementInstance instance, Node node, Object value)
    throws Exception {
    if ((node.getChild("RedChannel") == null) || (node.getChild("BlueChannel") == null)
        || (node.getChild("GreenChannel") == null)
        || (node.getChild("GrayChannel") == null)) {
      String msg = "All of Red,Blue,Green,Gray must be specified";
      throw new RuntimeException(msg);
    }

    SelectedChannelType[] rgb = new SelectedChannelType[] {
        (SelectedChannelType) node.getChildValue("RedChannel"),
        (SelectedChannelType) node.getChildValue("GreenChannel"),
        (SelectedChannelType) node.getChildValue("BlueChannel")
      };
    SelectedChannelType gray = (SelectedChannelType) node.getChildValue("GrayChannel");

    ChannelSelection cs = styleFactory.createChannelSelection(null);
    cs.setGrayChannel(gray);
    cs.setRGBChannels(rgb);

    return cs;
  }
}

final SelectedChannelType chTypeGray = new SelectedChannelTypeImpl();
chTypeGray.setChannelName("1");
chSel.setGrayChannel(chTypeGray);
rsb_1.setChannelSelection(chSel);
rsb_1.setOpacity(sldBuilder.literalExpression(1.0));

  @Override
  public void handle(YamlObject<?> obj, YamlParseContext context) {
    YamlMap map = obj.map();
    if (map.has(Band.GRAY.key)) {
      if (map.has(Band.RED.key) || map.has(Band.GREEN.key) || map.has(Band.BLUE.key))
        throw new IllegalArgumentException("grey and RGB can not be combined");
      SelectedChannelType gray = factory.style.selectedChannelType((String) null, null);
      selection.setGrayChannel(gray);
      parse(Band.GRAY, gray, map, context);
    } else {
      if (!(map.has(Band.RED.key) && map.has(Band.GREEN.key) && map.has(Band.BLUE.key)))
        throw new IllegalArgumentException("all of red green and blue must be preset");
      SelectedChannelType red = factory.style.selectedChannelType((String) null, null);
      SelectedChannelType green = factory.style.selectedChannelType((String) null, null);
      SelectedChannelType blue = factory.style.selectedChannelType((String) null, null);
      selection.setRGBChannels(red, green, blue);
      parse(Band.RED, red, map, context);
      parse(Band.GREEN, green, map, context);
      parse(Band.BLUE, blue, map, context);
    }
  }
}