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Code Issues 7 Releases Wiki Activity

add extension method: Vector2.Rotate()

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GitOrigin-RevId: ee1e84ff188d5a3134dafb1f5150199682c4e063
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Colin McMillen 2020-02-11 17:02:16 -05:00
parent 82cf612834
commit 7cc953a44e
1 changed files with 10 additions and 0 deletions
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10
Shared/Geometry.cs
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@ -5,6 +5,16 @@ using System;
namespace SemiColinGames { namespace SemiColinGames {
public static class Geometry {
public static Vector2 Rotate(this Vector2 point, float angle) {
float cos = FMath.Cos(angle);
float sin = FMath.Sin(angle);
return new Vector2(
point.X * cos - point.Y * sin,
point.Y * cos + point.X * sin);
}
}
// Math functions that return floats rather than doubles, for convenience. // Math functions that return floats rather than doubles, for convenience.
public static class FMath { public static class FMath {
public const float PI = (float) Math.PI; public const float PI = (float) Math.PI;