[SDL] "Perfect" circles

[Mike Shal]

Though others have already answered your main question, you have a
small error that may cause other trouble:

On 11/9/06, xEsk PiV <xeskuu.sdl at gmail.com> wrote:
> float pre_cos[360];
> float pre_sin[360];
> bool is_pre_cos_sin_init = false;
>
> const float PI = 3.14159265358979323846;
>
> float RadToDeg(float rad) { return rad * 180 / PI; }
> float DegToRad(float deg) { return deg * PI / 180; }
>
> void init_pre_math()
> {
>  for(int i = 0; i <= 360; i++)
>  {
>    pre_cos[i] = cos(DegToRad(i));
>    pre_sin[i] = sin(DegToRad(i));
>  }

Your arrays are size 360, but you're writing to index 360, which is
non-good :). You probably meant:

for(int i = 0; i < 360; i++)

(not <=)

-Mike