And we do have an OpenGL subforum, if you want animation
Does that help for getting a GPU to do interpolation etc.?
I'm obviously familiar with the basic concept but not how it can be implemented.
As it is, I'm not setting my sights too high since I'm keenly aware of the limited resolution: colouring by temperature or pressure will probably be OK, but landmass outlines and frontal overlay might be a problem.
MarkMLl
After setting up OpenGL (dropping an TOpenGLControl on a form), you have to create a scene and a viewport. The scene (model) can be a flat surface, but also a sphere. And the viewport is how you look at it. The
OpenGL tutorial explains it all (but you only need the first part). You can color the surface and you can add textures (like the landmass). After that, you need a shader, which is basically a small C program that is executed for each pixel, to color it.
For the fronts, vectors and text on top, you make a second surface, that hovers on top of the first one. You can draw on that.