| private static Grad ( int hashCode, float x, float y, float z ) : float | ||
| hashCode | int | |
| x | float | |
| y | float | |
| z | float | |
| return | float | |
private static float Grad( int hashCode, float x, float y, float z )
{
// Convert lower 4 bits of hash code into 12 gradient directions
int h = hashCode & 15;
float u = h < 8 ? x : y;
float v = h < 4 ? y : h == 12 || h == 14 ? x : z;
return ( ( ( h & 1 ) == 0 ? u : -u ) + ( ( h & 2 ) == 0 ? v : -v ) );
}
