protected void doPreRender(KMLTraversalContext tc, DrawContext dc)
{
if (this.getRenderable() == null)
{
this.initializeRenderable(tc);
}
KMLRenderable r = this.getRenderable();
if (r != null)
{
r.preRender(tc, dc);
}
}
protected void doRender(KMLTraversalContext tc, DrawContext dc)
{
// We've already initialized the screen image renderable during the preRender pass. Render the screen image
// without any further preparation.
KMLRenderable r = this.getRenderable();
if (r != null)
{
r.render(tc, dc);
}
// Render the feature balloon (if any)
this.renderBalloon(tc, dc);
}
protected bool isFeatureActive(KMLTraversalContext tc, DrawContext dc)
{
if (this.getVisibility() != null && !this.getVisibility())
{
return(false);
}
KMLRegion region = this.getRegion();
if (region == null)
{
region = tc.peekRegion();
}
return(region == null || region.isActive(tc, dc));
}
/**
* Create the renderable that will represent the overlay.
*
* @param tc the current KML traversal context.
*/
protected void initializeRenderable(KMLTraversalContext tc)
{
final String altitudeMode = this.getAltitudeMode();
if ("absolute".Equals(altitudeMode))
{
this.renderable = new KMLGroundOverlayPolygonImpl(tc, this);
}
else // Default to clampToGround
{
// If the overlay has an icon, create a surface image renderable. Otherwise, create a surface polygon to
// render the overlay as a colored polygon.
if (this.getIcon() != null && this.getIcon().getHref() != null)
{
this.renderable = new KMLSurfaceImageImpl(tc, this);
}
else
{
this.renderable = new KMLSurfacePolygonImpl(tc, this);
}
}
}
/**
* Create the renderable that will represent the overlay.
*
* @param tc the current KML traversal context.
*/
protected void initializeRenderable(KMLTraversalContext tc)
{
renderable = new KMLScreenImageImpl(tc, this);
}
