Added Geom class

src/dn/Geom.hx

@@ -0,0 +1,64 @@
+package dn;
+
+class Geom {
+
+	/** Return TRUE if rectangle A touches or Collides rectangle B. **/
+	// public static inline function rectTouchesRect(aX:Float, aY:Float, aWid:Float, aHei:Float, bX:Float, bY:Float, bWid:Float, bHei:Float) {
+	// 	/*
+	// 	Source: https://www.baeldung.com/java-check-if-two-rectangles-overlap
+
+	// 	"The two given rectangles won't overlap if either of the below conditions is true:
+	// 		One of the two rectangles is above the top edge of the other rectangle
+	// 		One of the two rectangles is on the left side of the left edge of the other rectangle"
+	// 	*/
+	// 	if( aY+aHei < bY || bY+bHei < aY )
+	// 		return false;
+	// 	else if( aX+aWid < bX || bX+bWid < aX )
+	// 		return false;
+	// 	else
+	// 		return true;
+	// }
+
+
+	/** Return TRUE if rectangle A Collides rectangle B. **/
+	public static inline function rectCollidesRect(aX:Float, aY:Float, aWid:Float, aHei:Float, bX:Float, bY:Float, bWid:Float, bHei:Float) {
+		/*
+		Source: https://www.baeldung.com/java-check-if-two-rectangles-overlap
+
+		"The two given rectangles won't overlap if either of the below conditions is true:
+			One of the two rectangles is above the top edge of the other rectangle
+			One of the two rectangles is on the left side of the left edge of the other rectangle"
+		*/
+		if( aY+aHei <= bY || bY+bHei <= aY )
+			return false;
+		else if( aX+aWid <= bX || bX+bWid <= aX )
+			return false;
+		else
+			return true;
+	}
+
+	public static inline function rectCollidesCircle(rx:Float, ry:Float, rWid:Float, rHei:Float, circleX:Float, circleY:Float, radius:Float) {
+		// Find the closest point on the rectangle to the center of the circle
+		final closestX = M.fclamp(circleX, rx, rx+rWid);
+		final closestY = M.fclamp(circleY, ry, ry+rHei);
+
+		// Calculate the distance between the closest point and the center of the circle
+		var dx = closestX - circleX;
+		var dy = closestY - circleY;
+
+		// Check if the closest point is inside the circle
+		return Math.sqrt( dx*dx + dy*dy ) <= radius;
+	}
+
+
+
+	public static inline function circleCollidesCircle(xA:Float, yA:Float, rA:Float,  xB:Float, yB:Float, rB:Float) {
+		return M.distSqr(xA,yA,xB,yB) <= (rA+rB)*(rA+rB);
+	}
+
+
+	@:noCompletion
+	public static function __test() {
+		// TODO
+	}
+}