src/hooks/surface/useSurfaceShapeBatch.js

@@ -1129,7 +1129,7 @@ export function useSurfaceShapeBatch({ isHidden, setIsHidden }) {
       //정렬된 폴리곤이 아니면(대각선이 존재하는 폴리곤일때)
       if (!polygon.isSortedPoints) {
         //좌우 반전을 했으면 반대로 정의함
-        if (isYInversion || isXInversion) {
+        if (isYInversion) {
           polygon.lines.forEach((line) => {
             if (line.attributes.type === LINE_TYPE.WALLLINE.EAVES) {
               line.attributes.type = LINE_TYPE.SUBLINE.RIDGE

src/hooks/usePolygon.js

@@ -176,10 +176,6 @@ export const usePolygon = () => {
    * @param showDirectionText
    */
   const drawDirectionArrow = (polygon, showDirectionText = true) => {
-    if (!polygon) {
-      return
-    }
-
     if (polygon.points.length < 3) {
       return
     }