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Posted

I am looking for some cool assets to show of my raytracer/path tracer I am working on for class. So I thought about getting some LEGO Star Wars models which I then could import. Googling wasn't helpful so far :-(

Does anybody has some models, or some links to some?

Thanks

Posted
What is a ractracer/path tracer ?

Vaders_son

A raytracer (sorry for typo) is a program which generates a picture given a scene description, which contains objects (e.g. spheres, cubes) materials (red plastic, green metal) and light sources. It works by shooting rays from your point of view through each pixel into the scene and then figuring out which object it hits first. It then caclulates a color for that pixel (e.g. using light sources, textures and so forth) and stores it in the image.

As an extension, a path tracer is more or less a physical simulation how light moves around. You take a light source, emit a photon (light particle) and follow it as it bounces around and gets reflected by surfaces. At some point, it will hit a "virtual" sensor which works like a CCD chip in a digital camera. If you do that with enough photons, you will end up with a pretty good approximation how things look like.

This is pretty slow (we talk about hours and days), as you need billions of photons to get a somehow good looking image, so I want to make it worth by create an interesting scene, possibly with some SW lego :-P

This is what I got so far (after like crunching for 2 days on 4 CPUs)

atst_1.png

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