'''Originally Posted By: GavinHigham''' '''Original Date: May 15, 2014 at 11:02 PM''' Thanks Arash, I had just remembered, probably a little too late to help people study.

-- practice questions 3 and 4

 Distribution ray tracing involves casting multiple rays towards an 

 Color bleeding occurs when light bounces off nearby surfaces and 

'''Originally Posted By: Jason Hungerford''' '''Original Date: May 15, 2014 at 10:54 PM''' Yup, sorry about that.<br><br>Rewriting no. 4 so it is more clear and grammatically correct:<br>4b: Distribution ray tracing involves casting multiple rays towards an object or light source, instead of the usual one per bounce. This is more computationally expensive but gives a much better approximation of the light at a point. It also allows for soft light sources and partial occlusion, where a point is only partly lighted by an area light source.<br><br>4c: Color bleeding occurs when light bounces off nearby surfaces and influences the color of another surface. Indirect lighting from other objects in the scene can contribute colored light to other surfaces.

practice questions 3 and 4

'''Originally Posted By: arash''' '''Original Date: May 15, 2014 at 1:40 PM''' I noticed that the people responsible for three and four managed to forget to post them to the discussion.<br>Here they are for those who didn't have access to a camera on monday.