Syntriax
/
Syntriax.Engine
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

feat: Vector2D.Orientation

This commit is contained in:
Syntriax 2024-01-24 12:31:53 +03:00
parent 77e1949f59
commit 0c3bf48d2c
1 changed files with 17 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
Engine.Core/Vector2D.cs
View File

@ -49,6 +49,23 @@ public record Vector2D(float X, float Y)
public static float Angle(Vector2D left, Vector2D right) => MathF.Acos(Dot(left, right) / (Length(left) * Length(right))); public static float Angle(Vector2D left, Vector2D right) => MathF.Acos(Dot(left, right) / (Length(left) * Length(right)));
public static float Dot(Vector2D left, Vector2D right) => left.X * right.X + left.Y * right.Y; public static float Dot(Vector2D left, Vector2D right) => left.X * right.X + left.Y * right.Y;
/// <summary>
/// Finds the Orientation of 3 <see cref="Vector2D"/>s
/// </summary>
/// <returns>0 -> Collinear, 1 -> Clockwise, 2 -> Counterclockwise</returns>
public static int Orientation(Vector2D left, Vector2D middle, Vector2D right)
{
Vector2D leftToMiddle = left.FromTo(middle);
Vector2D middleToRight = middle.FromTo(right);
float value = leftToMiddle.Y * middleToRight.X -
leftToMiddle.X * middleToRight.Y;
if (value > 0) return 1;
if (value < 0) return 2;
return 0;
}
public static bool ApproximatelyEquals(Vector2D left, Vector2D right, float epsilon = float.Epsilon) public static bool ApproximatelyEquals(Vector2D left, Vector2D right, float epsilon = float.Epsilon)
=> left.X.ApproximatelyEquals(right.X, epsilon) && left.Y.ApproximatelyEquals(right.Y, epsilon); => left.X.ApproximatelyEquals(right.X, epsilon) && left.Y.ApproximatelyEquals(right.Y, epsilon);