Projector Map Shadows?

[Ged Trias]

Hi everyone - I remember seeing a method of creating projector map shadows to help cut down animation render times. I'd like to give it a try, but I cant recall where I saw the method show. Can anyone help?

 

Thanks!

[seyahmit]

http://www.archvision.com/Tutorials.cfm?Tutorial=tutorials/shadow_Max5_6/Shadow_Tutorial.cfm

 

Enjoy,

 

Tim

[Ged Trias]

Thanks! I recall hearing another method that involved turning all the materials in a model white and rendering out a projector map out of that too. Anyone hear of this one?

[theqball]

Couple ways I would do this...

Either rendering illumination textures with shadows baked in using RTT (render to texture) or using the Camera Map Per Pixel material.

The RTT approach you are basically rendering the shadows and lighting onto white materials for all objects and then taking that new texture and applying it to the diffuse color with a composite material or in the self illumination slot.

The camera map material is a bit faster and easier to work with and is generated by rendering the image from the camera and then reapplying it like you would the light maps generated in RTT.

I don't know of a tutorial out there that shows this and one of these days I write one up for you all, but for now the help docs should get you going pretty much in the right direction for either of these techniques.

[jkletzien]

This is if you want to paint them.

 

http://www.neilblevins.com/cg_education/projector_lights/projector_lights.htm