Panda3d paged geometry?

General Discussion
2

I’ve done basically the same thing here :
[how to make these kind shodow?)

It’s grid based, so what I do is instance/copy the terrain chunks around the avatar from the pool to the scenegraph.

This is the relevant piece in updateDropShadow() :

      if self.CH.getAirborneHeight()<.1:
         minx = max( 0, int((w.terrainMinX+pos[0]-self.radius)/GRIDX) )
         miny = max( 0, int((w.terrainMinY+pos[1]-self.radius)/GRIDY) )
         maxx = min( int((w.terrainMinX+pos[0]+self.radius)/GRIDX), w.XSIZE-1 )
         maxy = min( int((w.terrainMinY+pos[1]+self.radius)/GRIDY), w.YSIZE-1 )
         idx = ( (minx,maxx), (miny,maxy) )
         if self.DSidx!=idx:
            self.DSidx=idx
            self.dropShadowGeom.removeChildren()
            ds = self.dropShadowGeom.attachNewNode('')
            for yi in range(miny,maxy+1):
                for xi in range(minx,maxx+1):
                    gnp = w.glist[xi][yi]
                    if gnp:
                       gnp.instanceTo(ds,0)
            ds.flattenStrong()

Enter debug mode and see how the white terrain chunks around the avatar are attached and removed from scenegraph.