Author: kpark

The Model matrix

This model, just as our beloved red triangle, is defined by a set of vertices. The X,Y,Z coordinates of these vertices are defined relative to the object’s center : that is, if a vertex is at (0,0,0), it is at the center of the object.

We can sum this up with the following diagram :

The View matrix

We went from World Space (all vertices defined relatively to the center of the world, as we made so in the previous section) to Camera Space (all vertices defined relatively to the camera).

Here’s the compulsory diagram :

The Projection matrix

We’re now in Camera Space. This means that after all theses transformations, a vertex that happens to have x==0 and y==0 should be rendered at the center of the screen.

And the final diagram :

Lab3-GeometryPositionColorMouse (using mouse & motion & geometry animation)
lab3-GeometryPositionColorMouse-src

geometryPositionColor class restructured (adding center position & animation routine)

Lab2-GeometryPositionColor (using Model-View-Projection matrix)
lab2-moglclassGeometryPositionColor-src

Geometry – Tree, Circle, Triangle, Quad, Sphere, Cube, Cylinder, Torus, Parallelepiped

lab1
lab1-moglclassShaderPrimitive-src
triangle
square
circle
indexedSquare (using vertex buffer, index buffer)

 
lab1-moglclassShaderPrimitiveGasket-src
gasket 2D point
gasket 2D triangle
gasket 3D triangle