For rendering excavation results

     SampleCode:

         //Occlusion settings
         occlusionHelper = arView.getOcclusionHelper();
         occlusionHelper.init(0.36f)
         .setRenderMode(OcclusionHelper.RenderMode.NORMAL);

         //Using ARGeoPrism to build a "detection wall"
         List roomBounds = Arrays.asList(
                 new Point3D(-1, -1, -2),
                 new Point3D(-1, 6, -2),
                 new Point3D(6, 6, -2),
                 new Point3D(6, -1, -2),
                 new Point3D(-1, -1, -2)
         );
         ARGeoPrism geoVerticalRegion = new ARGeoPrism();
         geoVerticalRegion.setParentNode(arView);
         geoVerticalRegion.setRenderable(false);//Not rendered, only used for ray detection
         geoVerticalRegion.addPart(roomBounds,6.0f);

         //Creates an excavation tool, before that, you need to confirm that AREffectView has enabled the occlusion setting
         //ExcavatorAll subclasses use the same method
         excavatorWall = new WallExcavator(geoVerticalRegion);

         //pothole texture
         Bitmap bitmap=null;
         Bitmap bitmap2=null;
         try {
             InputStream is = getApplicationContext().getAssets()
                  .open("brown_mud_dry2.png");
             bitmap= BitmapFactory.decodeStream(is);
             InputStream is2 = getApplicationContext().getAssets()
                  .open("wall_texture.png");
             bitmap2= BitmapFactory.decodeStream(is2);
             is.close();
             is2.close();
         } catch (IOException e) {
         }
         //Creates a Pothole Render Object
         pitWall = new PitObject(excavatorWall)
              .setTexture(bitmap,bitmap2);

        //Called every frame refresh
       (usually used
       EffectView#addOnUpdateListener(EffectView. OnUpdateListener)
        Add frame monitoring event)
        arView.addOnUpdateListener(()->{
           if (occlusionHelper.isEnabled()){
             //desc-Performs screen cropping
             ArrayList screenPoint = null;
             if (excavatorWall !=null){
                 //Calculates screen coordinates
                 screenPoint = excavatorWall.getScreenPoint(null);
                 if (screenPoint!=null){
                     //Refreshes the clipping range according to the screen coordinates
                     occlusionHelper.setUniquePointList(screenPoint).refresh();
                     dynamicView.updateLine(screenPoint);
                 }
             }
         }
        })

        // Excavation calculation wall collision point arView is AREffectView, screenPointX/Y is the corresponding screen coordinates
         //To calculate the collision point with the center of the screen in real time, put the following code into EffectView.OnUpdateListener
         Point3D hitPoint = excavatorWall
              .generateHitPoint(arView, screenPointX, screenPointY;
         if (hitPoint!=null){
             //desc-Performs vertex calculations for excavation (excavation parameters)
             excavatorWall.calculate(ExcavationParameter.builder()
                     .setRadius(radius)
                     .setOffset(offset)
                     .setInnerMargin(0)
                     .setCenterPoint(hitPoint)
                     .build());
         }
         //Renders pothole results
         pitWall.updateMesh();