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(circle128) Added radius arg

This commit is contained in:
Devine Lu Linvega 2023-06-09 10:53:23 -07:00
parent f6b7195578
commit f3674b2562
1 changed files with 5 additions and 11 deletions
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16
etc/circle128/circle128.c
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@ -22,17 +22,11 @@ clamp(int val, int min, int max)
return (val >= min) ? (val <= max) ? val : max : min; return (val >= min) ? (val <= max) ? val : max : min;
} }
int
cinu(char c)
{
return c >= '0' && c <= '9';
}
int int
sint(char *s) sint(char *s)
{ {
int i = 0, num = 0; int i = 0, num = 0;
while(s[i] && cinu(s[i])) while(s[i] && s[i] >= '0' && s[i] <= '9')
num = num * 10 + (s[i++] - '0'); num = num * 10 + (s[i++] - '0');
return num; return num;
} }
@ -41,17 +35,17 @@ int
main(int argc, char *argv[]) main(int argc, char *argv[])
{ {
int seg, offset, i; int seg, offset, i;
double segf; double segf, cx = 128, cy = 128, r;
if(argc < 2) { if(argc < 2) {
printf("usage: circle128 length\n", argc); printf("usage: circle128 length [radius]\n", argc);
return 1; return 1;
} }
seg = sint(argv[1]); seg = sint(argv[1]);
segf = (double)seg; segf = (double)seg;
offset = seg / 4; offset = seg / 4;
printf("%d points on a circle128:\n\n", seg); r = argc < 3 ? 128 : (double)sint(argv[2]);
printf("%d points on a circle%d:\n\n", seg, (int)r);
for(i = 0; i < seg; ++i) { for(i = 0; i < seg; ++i) {
double cx = 128, cy = 128, r = 128;
double pos = (i - offset) % seg; double pos = (i - offset) % seg;
double deg = (pos / segf) * 360.0; double deg = (pos / segf) * 360.0;
double rad = deg * (PI / 180); double rad = deg * (PI / 180);