+ int len_f = 0,
+ len_b = 0;
+
+ len_f = rb_sphere_scene( rbf, &world.rb_geo, manifold );
+ rb_manifold_filter_coplanar( manifold, len_f, 0.05f );
+ rb_manifold_filter_pairs( manifold, len_f, 0.05f );
+ if( len_f > 1 )
+ rb_manifold_filter_backface( manifold, len_f );
+ len_f = rb_manifold_apply_filtered( manifold, len_f );
+
+ rb_ct *man_b = &manifold[len_f];
+ len_b = rb_sphere_scene( rbb, &world.rb_geo, man_b );
+ rb_manifold_filter_coplanar( man_b, len_b, 0.05f );
+ rb_manifold_filter_pairs( man_b, len_b, 0.05f );
+ if( len_b > 1 )
+ rb_manifold_filter_backface( man_b, len_b );
+ len_b = rb_manifold_apply_filtered( man_b, len_b );