Description
[http://youtu.be/qubGCQDBKaY](http://youtu.be/qubGCQDBKaY)
Smoothly animating hourglass.
This uses bolian operations for the bulk of the sand rendered as volumteric textures, plus a particle system for the falling sand. It renders very fast. Texture from cgtextures.com
Comments (2)
Good job, yogyog
This seems like a great achievement. The granules are realistic. The thing I notice is that in real life the level of the granules in the upper chamber is not completely flat: the granules fall from the centre of the mass in the upper chamber, leaving a pit or dip and that the pit grows as more sand vacates, so the level of granules against the glass is higher than in the middle. Watch http://www.youtube.com/watch?v=GQ3GbndcMCQ near the end to see what I mean about the dip.
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