yesterday, after sitting and thinking about how it could be implemented, I came to an interesting conclusion based on the image in Photoshop! By changing the two starting points, I got the effect that I wanted to see, that is, the rotation effect! But the problem is this: I tried to figure out the dxDrawMaterialPrimitive function and didn't understand how to use it a bit, I also tried to find examples of work on the Internet. The problem is that I can't connect the 4 points I need, I can only make a triangle... Could you explain to me a little principle of correct operation and connection of points using this function?