Slo-Mo-Crash

Slo-Mo-Crash

Description

Testing the physics
A wooden sphere crashes into 15 reflective cubes.

Message boards : Comments and discussion : 343

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Martok
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Joined: 12 Mar 06
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Message 5169 - Posted: 30 Mar 2007, 15:54:38 UTC

Nice one. If these blocks were translucent, it would be awesome (even worth a still).

Maybe there is a raytracing bug?
All blocks are reflective. When you look at around 00:20, you see a block in the background, which is \'rolling off\' of another block. Now check the reflection in the block behind. It suddenly pops up and pops away later, as soon as the face of the original body is visible to the camera. But real mirrors could actually see the backside is illuminated.

I know raytracers work by casting rays to the camera, but is this intended behaviour?

Schosch
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Message 5197 - Posted: 31 Mar 2007, 8:36:17 UTC

Thanks!

I think this is because of the lighting: There is only one light source (a sun), and when the \'popping\' side of the cube goes parallel to the light direction, the front edge throws a shadow on the cube...

Maybe this picture shows more clearly what I mean:

Martok
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Message 5214 - Posted: 1 Apr 2007, 1:13:50 UTC
Last modified: 1 Apr 2007, 1:46:45 UTC

This is very possible.

While searching another feature, I stumbled upon the Bias settings each material has. This could very likely be the feature needed here.


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Message boards : Comments and discussion : 343