Table of Contents Previous Chapter Viewpoint Slideshow    Chapter Viewpoint Slideshow Javadoc for translated java source Next Chapter Viewpoint Slideshow X3D Resources

X3D Example Archives: VRML 2 Sourcebook, Chapter 25 Level Of Detail

[1] Figure25_01TorchHighDetail.x3d - Torch (high detail)
Chapter Viewpoint Slideshow

Level of detail (LOD) allows an overall world become very large by letting an author provide high-fidelity models when a viewer is nearby, and simpler geometry when the viewer is far away.

The further the viewer can see, the more there is to draw. Note that if a shape is distant, the shape is smaller and the viewer can't see as much detail. So... draw it with less detail. Varying detail with distance reduces initial download time and increases drawing speed.

Increase performance by making multiple levels of shapes: high detail for close up viewing, progressively lower detail for more distant viewing. Group the levels in an LOD node, ordered from high detail to low detail, and using an array of range values to select switching distances .

These X3D scenes are adapted directly from the original VRML 2.0 Sourcebook chapter examples. Also available: VRML 2.0 Sourcebook course notes.

Figure 25.04 Three Torches Side By Side

Figure 25.12 Dungeon Rooms With Sliding Doors

12 X3D Scenes                 25 Viewpoint Snapshots

Figure25_01TorchHighDetail
Figure 25 01 Torch High Detail.x3d    
[1] Figure25_01TorchHighDetail.x3d - Torch (high detail)
[2] Figure25_01TorchHighDetail.x3d - (default X3D view from 0 0 10)

Figure25_02TorchMediumDetail
Figure 25 02 Torch Medium Detail.x3d    
[3] Figure25_02TorchMediumDetail.x3d - Torch (medium detail)
[4] Figure25_02TorchMediumDetail.x3d - (default X3D view from 0 0 10)

Figure25_03TorchLowDetail
Figure 25 03 Torch Low Detail.x3d    
[5] Figure25_03TorchLowDetail.x3d - Torch (low detail)
[6] Figure25_03TorchLowDetail.x3d - (default X3D view from 0 0 10)

Figure25_04ThreeTorchesSideBySide
Figure 25 04 Three Torches Side By Side.x3d    
[7] Figure25_04ThreeTorchesSideBySide.x3d - Three torches, high/medium/low detail
[8] Figure25_04ThreeTorchesSideBySide.x3d - (default X3D view from 0 0 10)

Figure25_05ThreeTorchesSingleLOD
Figure 25 05 Three Torches Single LOD.x3d    
[9] Figure25_05ThreeTorchesSingleLOD.x3d - 20m no-detail torch - zoom in!
[10] Figure25_05ThreeTorchesSingleLOD.x3d - 10m low-detail torch
[11] Figure25_05ThreeTorchesSingleLOD.x3d - 5m medium-detail torch
[12] Figure25_05ThreeTorchesSingleLOD.x3d - 2m high-detail torch
[13] Figure25_05ThreeTorchesSingleLOD.x3d - (default X3D view from 0 0 10)

Figure25_06DungeonRoomFloor
Figure 25 06 Dungeon Room Floor.x3d    
[14] Figure25_06DungeonRoomFloor.x3d - Dungeon floor
[15] Figure25_06DungeonRoomFloor.x3d - (default X3D view from 0 0 10)

Figure25_07DungeonRoomWall
Figure 25 07 Dungeon Room Wall.x3d    
[16] Figure25_07DungeonRoomWall.x3d - Dungeon wall
[17] Figure25_07DungeonRoomWall.x3d - (default X3D view from 0 0 10)

Figure25_08DungeonRoom
Figure 25 08 Dungeon Room.x3d    
[18] Figure25_08DungeonRoom.x3d - Dungeon room
[19] Figure25_08DungeonRoom.x3d - (default X3D view from 0 0 10)

Figure25_09TwoDungeonRoomsWithLODHiding
Figure 25 09 Two Dungeon Rooms With LODHiding.x3d    
[20] Figure25_09TwoDungeonRoomsWithLODHiding.x3d - Dungeon room
[21] Figure25_09TwoDungeonRoomsWithLODHiding.x3d - (default X3D view)

Figure25_10DungeonWallWithDoorway
Figure 25 10 Dungeon Wall With Doorway.x3d    
[22] Figure25_10DungeonWallWithDoorway.x3d - Dungeon door
[23] Figure25_10DungeonWallWithDoorway.x3d - (default X3D view from 0 0 10)

Figure25_11DungeonDoor
Figure 25 11 Dungeon Door.x3d    
[24] Figure25_11DungeonDoor.x3d - (default X3D view from 0 0 10)

Figure25_12DungeonRoomsWithSlidingDoors
Figure 25 1 2Dungeon Rooms With Sliding Doors.x3d    
[25] Figure25_12DungeonRoomsWithSlidingDoors.x3d - Click door for next dungeon room
[26] Figure25_12DungeonRoomsWithSlidingDoors.x3d - (default X3D view)
 

This viewpoint slideshow is online at
http://www.web3d.org/x3d/content/examples/Vrml2Sourcebook/Chapter25LevelOfDetail/viewpointSlideshow.html

Validate XHTML 1.1

Viewpoint image version history at
http://sourceforge.net/p/x3d/code/HEAD/tree/www.web3d.org/x3d/content/examples/Vrml2Sourcebook/Chapter25LevelOfDetail/_viewpoints

Table of Contents Previous Chapter Viewpoint Slideshow    Chapter Viewpoint Slideshow Javadoc for translated java source Next Chapter Viewpoint Slideshow X3D Resources