After watching dovoto’s second live video tutorial I decided to check out the Bresenham algorithm mentioned in the last slide. After some help from dovoto and this indispensable website I put together this demo of the basic version of the algorithm. It only only draws in the first octant but it’s a start I suppose. Also, it’s in ASM rather than C and it is for the GBA instead of the NDS (dovoto’s tutorials being for NDS with C).
Ok, so you got the positive angles sorted, from an article that explains only 1 octant…
Here’s some C code that does all 8 octants very easily http://www.falloutsoftware.com/tutorials/dd/dd4.htm (Yes it’s for DirectX, but you can use the same principles on the DS / GBA…
Comment by steven — August 29, 2009 @ 7:00 am