static GLfloat
ease_ratio (GLfloat r)
{
GLfloat ease = 0.35;
if (r <= 0) return 0;
else if (r >= 1) return 1;
else if (r <= ease) return ease * ease_fn (r / ease);
else if (r > 1-ease) return 1 - ease * ease_fn ((1 - r) / ease);
else return r;
}
/* Squirty motion: fast acceleration, then fade. */
static GLfloat
ease_ratio (GLfloat r)
{
GLfloat ease = 0.05;
GLfloat ease2 = 1-ease;
if (r <= 0) r = 0;
else if (r >= 1) r = 1;
else if (r <= ease) r = ease * ease_fn (r / ease);
else r = 1 - ease2 * ease_fn ((1 - r) / ease2);
return r;
}
