Bresenham Fast Circle Algorithm
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Alrighty, I'll change it to indicate that the speed improvement depends on the radius of the circle, and give the range as an average 5x-2x improvement.
Geopipe
thats better, but still not accurate, as at a radious of 10 its already down to just a 1.5x improvement, and at 31 (which, btw, doesn't draw an accurate circle) it is much slower (almost half the speed of the built in)

so the real range would be 8x (r = 1) to 0.6x (r = 31) on an 84+SE
There are only two kinds of programming languages: those people always bitch about and those nobody uses. (Bjarne Stroustrup)
something1990 wrote:
He did it. Kllrnohj did it in C.


huh?
Liazon wrote:
something1990 wrote:
He did it. Kllrnohj did it in C.


huh?
Kllrnohj implemented this algorithm in C, which he then compiled for the z80. Mine does the same in TI-BASIC. The ideal balance between speed and size would be in an assembly program using a shell with Ion routines, such as Ion, MOS, or DCS.
Geopipe
Liazon wrote:
something1990 wrote:
He did it. Kllrnohj did it in C.


huh?


I used SDCC and wrote some of my own C/ASM functions
There are only two kinds of programming languages: those people always bitch about and those nobody uses. (Bjarne Stroustrup)
Kllrnohj wrote:
Liazon wrote:
something1990 wrote:
He did it. Kllrnohj did it in C.


huh?


I used SDCC and wrote some of my own C/ASM functions
And used some of the Ion routines, which is why I recommended making it a component of some shell-based program that already has access to those routines.
Geopipe
  
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