@freemo
Yeah, I have to manually calculate each point on the circle using a for loop.
I recently watch a youtube video about simulate the behaviour of ant colony. He used OpenGL with cpp and I want to implement my own version. But it seems like OpenGL and cpp things are far beyond my control XD

@skyblond opengl is totally doable, you will just be coding at the vector level, so rather tedious. Thats what you get with low-level really.

If you want something easy but powerful consider scene-graph type engines on top of opengl, they are way more intuitive.

@freemo
I'll have a try. I'm always being curious with new things and that's my first couple hours with computer graphics, and I'm excited about this new territory (while jvm still keep crashing XD

@skyblond Scene graphs are fun but they are more about manipulating the higher level objects. Obviously there are ways to draw circles too, but thats not really where the scenegraph aspect is helping you (though it is helpful about manipulating that circle in the scene, moving it and such).

@freemo
If my memory is correct, drawing a circle in javafx or awt is really easy, even with manually calculating the coordinates.

In that video he use gpu shader to speed up large scale simulation and it looks cooooool