Hello, I am new here so bear with me
I have some questions which I'd like to get answered. They are all about JComponent.getGraphics() (Graphics.XXX()) function calls. I am making a 3d engine so I'd like the most efficient solutions.
1) How does Java handle drawing outside of a component's boundaries? I'd like to know this so I can decide if it's more efficient to write a clipping function to remove the data outside the boundaries or just let Java draw outside the boundaries. There are three scenarios as far as I can see:
*) Java clips automatically and skips the drawing instruction - thus rendering the need of a separate clipping function in the XY-plane unnecessary. I find this most probable.
*) Java tries to draw outside the boundaries with the same speed as drawing inside the boundaries.
*) Java tries to draw outside the boundaries with an impact on speed, thus validating the use of a separate clipping function.
**** EDIT ****
After some testing, I found out JComponents are almost certainly clipped by Java. That's good news...
2) How does Java fill shapes; does it use some sort of scan conversion algorithm or a flood filling algorithm?
If the later is correct; how fast is it? Would a custom made filling function for filling shapes speed up things?
3) How does Java double buffer JComponents? Is it acceptable to use the built in double buffering or should you make an own function for it?
Any more things I should take into account? I have got a wireframe 3d engine to work, and am in the process of adding support for solid shapes.
**** EDIT ****
It now supports solid shapes and lightning
Tommi Kiviniemi from Luleå, Sweden