Example 5: Ray-Casting with BlockMaps

A WebGL-enabled browser is needed to run the examples.
Refer to this page for a quick HOWTO.


This demo uses the BlockMap data structure to display a city block using ray casting.(data loading may take a while).
In this dataset ambient occlusion has been disabled due to unwanted alpha premultication by WebGL browsers implementation.


- Ray-Casted BlockMaps for Large Urban Models Streaming and Visualization
- Interactive Remote Exploration of Massive Cityscapes


W : Move Forward
S : Move Backward
A : Strafe Left
D : Strafe Right
Q : Move Upward
E : Move Downward
Hold MouseLeftButton + MouseMove : Look
MouseWheel : Move Forward/Backward
B : Toggle Bounding Boxes
Shift + R : Reset Viewpoint