XB PointStream
Releases
A cross-browser JavaScript tool which will emulate Arius3D's PointStream viewer. It will be able to quickly render a large amount of point cloud data to the <canvas> tag using WebGL.
XBPS 0.1
XBPS 0.2
XBPS 0.3
XBPS 0.4
XBPS 0.4.5 [Only Lib | Full]
XB PointStream Dev Links
Development Resources
Parser Interface
/*
@param {String} eventName - can be "onstart", "onparse" or "onfinish"
@param {Function} func - the function to call when the event occurs
*/
addEventListener(eventName, func)
/*
Begins to load the resource
@param {String} path - Path to resource
*/
load(path)
/*
Returns the version of this parser
@returns {String} parser version
*/
getVersion()
/*
@returns {Number} the number of points parsed so far by the parser
*/
getNumParsedPoints()
/*
@returns {Number} the total number of points in the resource or -1 if unknown
*/
getNumTotalPoints()
/*
@returns {Number} value from 0 to 1
*/
getProgress()
/*
@returns {Number} the number of bytes of the resource
*/
getFileSize()
Performance Issue Ideas
- Spatially partition point cloud into Bounding volume hierarchy and do bounding volume frustum culling
- Do static rendering
- Render low LOD when rotating point cloud
- Push as much as we can to CPU and GPU
- Use progressive "mesh" optimization to render objects if they are far from the camera
- Allow user to control LOD
- Stream point cloud, dynamically create and merge bounding volumes
- Pre-create Bounding volume hierarchy