Class 12: How 3D Computer Graphics Work

For this assignment we looked at a video on youtube called "How 3D graphics work" you can view this video here: https://www.youtube.com/watch?v=pfV-4CKj3PQ&feature=youtu.be .  It was very short and easy to understand which I liked.  The major things that he discussed were Polygons, the importance of triangles, and Lighting.  I was able to get a great understanding out of this small video.

The first part of the video talks about 3D Polygons which are made up of vertices.  Vertices are basically a bunch of points that are connected together by lines. He also mentions that everything in 3D modeling is made out of triangles which I think is really cool.  If you think about it so many shapes can be made up of triangles, and you can even get a round look.  

An example where these are used is in video games.  As you can see in the screenshot you can see that this 3D looking character is made up of entirely small triangles, which is really cool to think about.  On the other side of him you see what he looks like in the game. Even if your playing a video game you can change the mode and see this version of your character and edit it. 

The next thing he talked about was lighting, he talks about how important it is to get that 3D effect onto the screen.  He brings up texture mapping which is something that we have talked about previously in class.  Texture mapping is when a 2D surface is wrapped around a 3D object, that way they have similar textures.  He then brings up lighting normals which has to do with the positioning of the object to the light.