diff options
| -rw-r--r-- | balls.c | 10 |
1 files changed, 8 insertions, 2 deletions
@@ -20,7 +20,7 @@ enum { DEFAULT_NBALLS = 3, VMAX = 3, - MASS_FACTOR = 1, + MASS_FACTOR = 75, G_PER_KG = 1000, FPS = 60, @@ -57,6 +57,7 @@ Point randptinrect(Rectangle r); int randint(int lo, int hi); uint maxelem(uint arr[], uint n); double mass(uint radius); +double area(double radius); void ball(void *arg); void broadcast(Channel *cs[], int n, void *v); void frametick(void *arg); @@ -279,7 +280,12 @@ maxelem(uint arr[], uint n) { double mass(uint radius) { - return (double) radius / MASS_FACTOR / G_PER_KG; + return area(radius) / MASS_FACTOR / G_PER_KG; +} + +double +area(double radius) { + return M_PI * radius*radius; } void |