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better rotation mechanics

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This commit is contained in:
nora 2020-12-11 22:33:18 +01:00
parent 3bf79290bb
commit 35c47c50b8
10 changed files with 98 additions and 8 deletions
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8
src/test/java/core/Vector2DTest.java
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@ -67,7 +67,15 @@ class Vector2DTest {
assertEquals(round(expected), round(rotated));
}
public static Vector2D round(Vector2D a){
return new Vector2D(Math.round(a.x*10000d)/10000d, Math.round(a.y*10000d)/10000d);
}
@Test
void getUnitVectorSimple() {
double dir = Math.PI;
Vector2D expected = new Vector2D(0, -1);
assertEquals(round(expected), round(Vector2D.getUnitVector(dir)));
}
}