Package com.openinventor.inventor.actions

Class SoLineHighlightRenderAction

java.lang.Object
com.openinventor.inventor.Inventor
com.openinventor.inventor.actions.SoAction
com.openinventor.inventor.actions.SoGLRenderAction
com.openinventor.inventor.actions.SoHighlightRenderAction
com.openinventor.inventor.actions.SoLineHighlightRenderAction
public class SoLineHighlightRenderAction extends SoHighlightRenderAction
A wireframe highlight style. SoLineHighlightRenderAction is a render action which renders the specified scene graph, then renders each selected object again in wireframe. If there is no renderable geometry in a selected object, no highlight is rendered for that object.

Selected objects are specified by the first selection node (SoSelection or SoExtSelection) node in the scene to which this action is applied. If there is no selection node in the scene graph, then no objects will be highlighted.

The application must explicitly tell Open Inventor to use a highlight render action in place of the default SoGLRenderAction in the SoSceneManager class using the setGLRenderAction() method. The viewer classes provide a convenience setGLRenderAction() method that calls SoSceneManager (see e.g.

invalid reference 
SoWinRenderArea
).

For convenience, the viewer classes also provide the redrawOnSelectionChange() method. This method attaches a sensor to the specified selection node and automatically schedules a redraw if the set of selected objects is modified.

Other highlight effects are available including "halo" highlighting.

EXAMPLE

Here is an example of how a line highlight can be specified for a particular selection node and render area. 

 // Viewer
 ViewerExaminer viewer = new ViewerExaminer();
 
 // Set the highlight render action
 final RenderArea area = viewer.getRenderArea();
 area.setGLRenderAction( new SoLineHighlightRenderAction() );
 
 // Scene graph
 SoSelection selectionNode = new SoSelection();
 
 // Request automatic redraw when selection changes
 selectionNode.addChangeCallback(new SoSelectionClassCB()
 {
   public void invoke(SoSelection s)
   {
     area.scheduleRedraw();
   }
 });
 . . .
 viewer.setSceneGraph( selectionNode );

See Also:

  • Constructor Details

    • SoLineHighlightRenderAction

      public SoLineHighlightRenderAction(SbViewportRegion viewportRegion)
      Constructor which takes the normal SoGLRenderAction parameters.

    • SoLineHighlightRenderAction

      public SoLineHighlightRenderAction()
      Constructor.

  • Method Details

    • getLineWidth

      public float getLineWidth()
      Gets the line width of the highlight.

    • getLinePattern

      public short getLinePattern()
      Gets the line pattern of the highlight.

    • getPointSize

      public float getPointSize()
      Gets the point size of the highlight.

    • setLineWidth

      public void setLineWidth(float width)
      Sets the line width of the highlight. Default is 3. The application is responsible for forcing a redraw of the scene to see the effects of this change.

    • setPointSize

      public void setPointSize(float size)
      Sets the size of points (diameter in pixels) rendered by the highlight. Default is 1. Value must be greater than zero. Only applies to point primitives, e.g. SoPointSet.

    • enableElement

      public static void enableElement(Class<? extends Inventor> t, int stkIndex)

    • setColor

      public void setColor(SbColor c)
      Sets the color of the highlight. Default is red (1,0,0). The application is responsible for forcing a redraw of the scene to see the effects of this change.

    • setLinePattern

      public void setLinePattern(short pattern)
      Sets the line pattern of the highlight. Default is solid, 0xffff. The pattern of bits in the passed variable specifies the pattern of the line. See SoDrawStyle for more information. The application is responsible for forcing a redraw of the scene to see the effects of this change.

    • getColor

      public SbColor getColor()
      Gets the color of the highlight.