| 158 | return sqrt(v->x * v->x + v->y * v->y + v->z * v->z); |
| 159 | } |
| 160 | float normalize3(float4* v) |
| 161 | { |
| 162 | float len = length3(v), invLen = 1.0f / len; |
| 163 | v->x *= invLen; |
| 164 | v->y *= invLen; |
| 165 | v->z *= invLen; |
| 166 | return len; |
| 167 | } |
| 168 | |
| 169 | float dot2(float2 *a, float2 *b) |
| 170 | { |