Interpolation

Exercises

1. Make the top vertex of the triangle (gl_VertexID 2) move between point p0 at (-1.0, 1.0, 0.0) and p1 at (1.0, -0.3, 0.0).
• Use mix() to do linear interpolation in GLSL.
• Use the time uniform to animate, but remember to keep the t value of the interpolation between 0 and 1. Try using mod() or sin().
2. Animate the color of the triangle by changing the color output in the fragment shader. Have it interpolate between two colors c0 and c1.
3. Spend a few minutes and trying different combinations of animations: different vertex ID, other colors, maybe throw in an extra point to interpolate with and use nested mix functions.