fix: Correct trigonometric function usage in Matrix transformations

Author: DonColon

src/core/math/Line.ts

@@ -24,13 +24,11 @@ export class Line {
 		return new Line(start.x, start.y, end.x, end.y);
 	}
 
-	public contains(point: Vector): boolean {
+	public contains(point: Vector, tolerance: number = 0.001): boolean {
 		const distanceStart = point.distanceBetween(this.start);
 		const distanceEnd = point.distanceBetween(this.end);
-
 		const length = this.getLength();
-		const tolerance = 0.1;
-
+		
 		return distanceStart + distanceEnd >= length - tolerance && distanceStart + distanceEnd <= length + tolerance;
 	}
 

src/core/math/Matrix.ts

@@ -110,8 +110,8 @@ export class Matrix {
 		const radian = toRadians(angle);
 
 		const transformation = new Matrix([
-			[1, Math.atan(radian), 0],
-			[Math.atan(radian), 1, 0],
+			[1, Math.tan(radian), 0],
+			[Math.tan(radian), 1, 0],
 			[0, 0, 1]
 		]);
 
@@ -123,7 +123,7 @@ export class Matrix {
 		const radian = toRadians(angle);
 
 		const transformation = new Matrix([
-			[1, Math.atan(radian), 0],
+			[1, Math.tan(radian), 0],
 			[0, 1, 0],
 			[0, 0, 1]
 		]);
@@ -137,7 +137,7 @@ export class Matrix {
 
 		const transformation = new Matrix([
 			[1, 0, 0],
-			[Math.atan(radian), 0, 0],
+			[Math.tan(radian), 1, 0],
 			[0, 0, 1]
 		]);