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Diffstat (limited to 'src/Vec2.elm')
| -rw-r--r-- | src/Vec2.elm | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/Vec2.elm b/src/Vec2.elm index 056c657..c980e1a 100644 --- a/src/Vec2.elm +++ b/src/Vec2.elm @@ -29,6 +29,15 @@ div v d = , y = v.y / d } +norm : Vec2 -> Float +norm v = sqrt(v.x ^ 2 + v.y ^ 2) + +clockwiseRotate90 : Vec2 -> Vec2 +clockwiseRotate90 v = + { x = -v.y + , y = v.x + } + isNull : Vec2 -> Bool isNull v = (v.x == 0) && (v.y == 0) |