Sean, thanks for the reply. I’ve also thought of creating texture using an elevation grid for the drawn polygon. I have a question -
I’ve been reading about texture coordinate mapping and I’m uncertain how texture coordinate mapping will work if I generate the texture from elevation data. Consider the following image -
let suppose that I started reading elevation data from the top row (below point A), left to right and populating the colour texture matrix in the same order. Now is it possible that my texture doesn’t map to the polygon as it is? Think of it like a sheet of texture paper, could it be possible that generated texture get rotated (let say 90) while applying on the polygon, in that case, all colour mapping will be wrong which I don’t want.
I’m planning to generate the grid and get elevation for each block (within the polygon) from the backend server (as an array of elevations). Please let me know if you see any potential problems with this approach.
PS: I’m very new to WebGL and graphics, this might be a novice question so please bear with me.