diff --git a/src/components/Roof2.jsx b/src/components/Roof2.jsx
index 9d36b6b0..de3ae06c 100644
--- a/src/components/Roof2.jsx
+++ b/src/components/Roof2.jsx
@@ -5,10 +5,10 @@ import { Button } from '@nextui-org/react'
 import QRect from '@/components/fabric/QRect'
 
 import RangeSlider from './ui/RangeSlider'
-import { useRecoilState, useRecoilValue } from 'recoil'
-import { canvasAtom, canvasListState, canvasSizeState, fontSizeState, sortedPolygonArray } from '@/store/canvasAtom'
+import { useRecoilState } from 'recoil'
+import { canvasSizeState, fontSizeState, sortedPolygonArray } from '@/store/canvasAtom'
 import { QLine } from '@/components/fabric/QLine'
-import { getTests, getCanvasState, insertCanvasState } from '@/lib/canvas'
+import { getCanvasState, insertCanvasState } from '@/lib/canvas'
 import { calculateIntersection2 } from '@/util/canvas-util'
 import { CustomLine } from '@/components/fabric/QLine'
 import { QPolygon } from '@/components/fabric/QPolygon'
@@ -206,6 +206,28 @@ export default function Roof2() {
       { x: 897, y: 215 },
     ]
 
+    const eightPoint3 = [
+      { x: 190, y: 147 },
+      { x: 190, y: 747 },
+      { x: 490, y: 747 },
+      { x: 490, y: 497 },
+      { x: 640, y: 497 },
+      { x: 640, y: 747 },
+      { x: 1090, y: 747 },
+      { x: 1090, y: 147 },
+    ]
+
+    const eightPoint4 = [
+      { x: 228, y: 92 },
+      { x: 228, y: 592 },
+      { x: 478, y: 592 },
+      { x: 478, y: 342 },
+      { x: 728, y: 342 },
+      { x: 728, y: 592 },
+      { x: 1078, y: 592 },
+      { x: 1078, y: 92 },
+    ]
+
     if (canvas) {
       const polygon = new QPolygon(eightPoint, {
         fill: 'transparent',
diff --git a/src/components/fabric/QLine2.js b/src/components/fabric/QLine2.js
index 9379ba26..d75cff2c 100644
--- a/src/components/fabric/QLine2.js
+++ b/src/components/fabric/QLine2.js
@@ -15,7 +15,7 @@ export class QLine2 extends fabric.Group {
   y2
   direction
   idx
-  type = 'QLine'
+  type = 'QLine2'
   parent
   isAlreadyInterSection = false
 
diff --git a/src/components/fabric/QPolygon3.js b/src/components/fabric/QPolygon3.js
index 73f1b700..b3770831 100644
--- a/src/components/fabric/QPolygon3.js
+++ b/src/components/fabric/QPolygon3.js
@@ -18,8 +18,8 @@ import {
 import { QLine } from '@/components/fabric/QLine'
 import { drawHelpLineInHexagon } from '@/util/qpolygon-utils'
 
-export default class QPolygon extends fabric.Group {
-  type = 'QPolygon'
+export default class QPolygon3 extends fabric.Group {
+  type = 'QPolygon3'
   polygon
   points
   texts = []
diff --git a/src/hooks/useCanvas.js b/src/hooks/useCanvas.js
index f3b3901e..dee2983b 100644
--- a/src/hooks/useCanvas.js
+++ b/src/hooks/useCanvas.js
@@ -127,12 +127,6 @@ export function useCanvas(id) {
       fabric.Object._fromObject('QLine', options, _callback, 'points')
     }
 
-    // CustomLine.prototype.canvas = canvas
-
-    // fabric.QLine = fabric.util.createClass(fabric.Group, {})
-
-    // Register the custom class with fabric
-
     fabric.QPolygon.fromObject = function (object, callback) {
       fabric.Object._fromObject('QPolygon', object, callback, 'points')
     }
diff --git a/src/hooks/useMode.js b/src/hooks/useMode.js
index b899095d..e0f6097c 100644
--- a/src/hooks/useMode.js
+++ b/src/hooks/useMode.js
@@ -25,6 +25,7 @@ export function useMode() {
   const points = useRef([])
   const historyPoints = useRef([])
   const historyLines = useRef([])
+  const startPoint = useRef()
   const [canvas, setCanvas] = useState(null)
   const [zoom, setZoom] = useState(100)
   const [fontSize] = useRecoilState(fontSizeState)
@@ -35,6 +36,8 @@ export function useMode() {
 
   const [endPoint, setEndPoint] = useState(null)
 
+  const pointCount = useRef(0)
+
   const [roofPolygonPattern, setRoofPolygonPattern] = useRecoilState(roofPolygonPatternArrayState)
 
   const [canvasSize] = useRecoilState(canvasSizeState)
@@ -102,6 +105,62 @@ export function useMode() {
     canvas?.renderAll()
   }
 
+  useEffect(() => {
+    if (pointCount.current <= 2) {
+      removeGuideLines()
+      return
+    }
+    drawGuideLines()
+  }, [pointCount.current])
+
+  const removeGuideLines = () => {
+    const guideLines = canvas?._objects.filter((obj) => obj.name === 'guideLine')
+    guideLines?.forEach((item) => canvas?.remove(item))
+  }
+
+  const drawGuideLines = () => {
+    // 이름이 guideLine인 가이드라인을 제거합니다.
+    removeGuideLines()
+
+    const arrivalX = startPoint.current?.left
+    const arrivalY = startPoint.current?.top
+
+    const lastX = endPoint?.left
+    const lastY = endPoint?.top
+
+    if (lastX === arrivalX || lastY === arrivalY) {
+      // 둘중 하나라도 같으면 guideLine은 한개만 생성
+      const guideLine = new QLine([lastX, lastY, arrivalX, arrivalY], {
+        fontSize: fontSize,
+        stroke: 'black',
+        strokeWidth: 1,
+        strokeDashArray: [1, 1, 1],
+      })
+      guideLine.name = 'guideLine'
+      canvas?.add(guideLine)
+    } else {
+      const guideLine1 = new QLine([lastX, lastY, lastX, arrivalY], {
+        fontSize: fontSize,
+        stroke: 'black',
+        strokeWidth: 1,
+        strokeDashArray: [1, 1, 1],
+      })
+
+      const guideLine2 = new QLine([guideLine1.x2, guideLine1.y2, arrivalX, arrivalY], {
+        fontSize: fontSize,
+        stroke: 'black',
+        strokeWidth: 1,
+        strokeDashArray: [1, 1, 1],
+      })
+
+      guideLine1.name = 'guideLine'
+      guideLine2.name = 'guideLine'
+
+      canvas?.add(guideLine1)
+      canvas?.add(guideLine2)
+    }
+  }
+
   /**
    * 마우스 포인터의 가이드라인을 제거합니다.
    */
@@ -125,12 +184,10 @@ export function useMode() {
     const pointer = canvas?.getPointer(e.e)
 
     // 마우스 포인터 위치랑 endPoint를 연결하는 line 생성
-    const line = new QLine([endPoint.left, endPoint.top, pointer.x, pointer.y], {
+    const line = new fabric.Line([endPoint.left, endPoint.top, pointer.x, pointer.y], {
       stroke: 'black',
-      strokeWidth: 2,
+      strokeWidth: 1,
       selectable: false,
-      viewLengthText: true,
-      fontSize: fontSize,
     })
 
     line.set({ name: 'connectLine' })
@@ -235,8 +292,6 @@ export function useMode() {
       selectable: false,
     })
 
-    setEndPoint(endPointCircle)
-
     canvas?.add(endPointCircle)
 
     historyPoints.current.push(endPointCircle)
@@ -244,6 +299,10 @@ export function useMode() {
     points.current.forEach((point) => {
       canvas?.remove(point)
     })
+
+    setEndPoint(endPointCircle)
+    pointCount.current = pointCount.current + 1
+
     points.current = [endPointCircle]
 
     canvas.renderAll()
@@ -317,6 +376,8 @@ export function useMode() {
 
   const changeMode = (canvas, mode) => {
     setEndPoint(null)
+    pointCount.current = 0
+
     setMode(mode)
     // mode변경 시 이전 이벤트 제거
     setCanvas(canvas)
@@ -329,15 +390,19 @@ export function useMode() {
     canvas?.on('mouse:down', function (options) {
       const pointer = canvas?.getPointer(options.e)
       const circle = new fabric.Circle({
-        radius: 1,
+        radius: 5,
         fill: 'transparent', // 원 안을 비웁니다.
-        stroke: 'black', // 원 테두리 색상을 검은색으로 설정합니다.
-        left: pointer.x,
-        top: pointer.y,
+        stroke: 'red', // 원 테두리 색상을 검은색으로 설정합니다.
+        left: pointer.x - 5,
+        top: pointer.y - 5,
         originX: 'center',
         originY: 'center',
         selectable: false,
       })
+      if (!startPoint.current) {
+        startPoint.current = circle
+        pointCount.current = pointCount.current + 1
+      }
 
       setEndPoint(circle)
 
@@ -347,6 +412,7 @@ export function useMode() {
 
       if (points.current.length === 2) {
         const length = Number(prompt('길이를 입력하세요:'))
+
         // length 값이 숫자가 아닌 경우
         if (isNaN(length) || length === 0) {
           //마지막 추가 된 points 제거합니다.
@@ -382,40 +448,10 @@ export function useMode() {
             }
           }
 
-          const line = new QLine(
-            [points.current[0].left, points.current[0].top, points.current[0].left + scaledVector.x, points.current[0].top + scaledVector.y],
-            {
-              stroke: 'black',
-              strokeWidth: 2,
-              selectable: false,
-              viewLengthText: true,
-              direction: getDirection(points.current[0], points.current[1]),
-              fontSize: fontSize,
-            },
-          )
+          const verticalLength = scaledVector.y
+          const horizontalLength = scaledVector.x
 
-          pushHistoryLine(line)
-
-          // 라인의 끝에 점을 추가합니다.
-          const endPointCircle = new fabric.Circle({
-            radius: 1,
-            fill: 'transparent', // 원 안을 비웁니다.
-            stroke: 'black', // 원 테두리 색상을 검은색으로 설정합니다.
-            left: points.current[0].left + scaledVector.x,
-            top: points.current[0].top + scaledVector.y,
-            originX: 'center',
-            originY: 'center',
-            selectable: false,
-          })
-          setEndPoint(endPointCircle)
-          canvas?.add(endPointCircle)
-
-          historyPoints.current.push(endPointCircle)
-
-          points.current.forEach((point) => {
-            canvas?.remove(point)
-          })
-          points.current = [endPointCircle]
+          drawCircleAndLine(verticalLength, horizontalLength)
         }
       }
 
@@ -667,6 +703,8 @@ export function useMode() {
    */
   const handleClear = () => {
     canvas?.clear()
+    startPoint.current = null
+    setEndPoint(null)
     points.current = []
     historyPoints.current = []
     historyLines.current = []
@@ -1979,16 +2017,15 @@ export function useMode() {
       }
     }
 
-    roofPatternPolygonArray.push(bigRoofPolygon)
-    roofPatternPolygonArray.push(middleRoofPolygon)
-    roofPatternPolygonArray.push(smallRoofPolygon)
-
-    setRoofPolygonPattern({ roofPatternPolygonArray, lines })
+    roofPatternPolygonArray.push(bigRoofPolygon) //지붕폴리곤
+    roofPatternPolygonArray.push(middleRoofPolygon) //중간라인 폴리곤
+    roofPatternPolygonArray.push(smallRoofPolygon) //작은지붕폴리곤
+    setRoofPolygonPattern({ roofPatternPolygonArray, lines }) //모든 행을 저장
 
     canvas.renderAll()
   }
 
-  const handleOuterLineTemplateA8Points = (polygon, offsetInputX = 50, offsetInputY = 20) => {
+  const handleOuterLineTemplateA8Points = (polygon, offsetInputX = 20, offsetInputY = 50) => {
     let offsetPoints = []
 
     const originalMax = 71
@@ -2002,15 +2039,15 @@ export function useMode() {
 
     const dashedCenterLineOpt = {
       stroke: 'black',
-      strokeWidth: 4,
+      strokeWidth: 1,
       property: 'centerLine',
-      strokeDashArray: [5, 5],
+      strokeDashArray: [8, 4],
       fontSize: 14,
     }
 
     const centerLineOpt = {
       stroke: 'blue',
-      strokeWidth: 5,
+      strokeWidth: 2,
       property: 'bigHoriCenter',
       fontSize: 14,
     }
@@ -2020,10 +2057,8 @@ export function useMode() {
       const start = polygon.points[i]
       const end = polygon.points[(i + 1) % polygon.points.length] // 다음 점, 마지막 점의 경우 첫 점으로
 
-      const color = i % 2 === 0 ? '#A0D468' : 'skyblue'
-
       const line = new QLine([start.x, start.y, end.x, end.y], {
-        stroke: color,
+        stroke: '#A0D468',
         strokeWidth: 2,
         property: 'normal',
         fontSize: 14,
@@ -2038,12 +2073,6 @@ export function useMode() {
 
     const sortedIndex = getStartIndex(polygon.lines)
     let tmpArraySorted = rearrangeArray(polygon.lines, sortedIndex)
-
-    if (tmpArraySorted[0].direction === 'right') {
-      //시계방향
-      tmpArraySorted = tmpArraySorted.reverse() //그럼 배열을 거꾸로 만들어서 무조건 반시계방향으로 배열 보정
-    }
-
     setSortedArray(tmpArraySorted) //recoil에 넣음
 
     const points = tmpArraySorted.map((line) => ({
@@ -2054,9 +2083,10 @@ export function useMode() {
     //좌표 재정렬
     function reSortQlineArray(array) {
       let tmpArray = []
+      let minX, minY, maxX, maxY
+      let tmp
       array.forEach((arr, index) => {
-        let minX, minY, maxX, maxY
-        let tmp = arr
+        tmp = arr
         if (arr.x2 < arr.x1 || arr.y2 < arr.y1) {
           minX = arr.x2
           minY = arr.y2
@@ -2113,56 +2143,46 @@ export function useMode() {
       index: concavePointIndices[0],
       line: lines[concavePointIndices[0]],
     }
-    for (var i = 0; i < points.length; i++) {
-      var prev = points[(i - 1 + points.length) % points.length]
-      var current = points[i]
-      var next = points[(i + 1) % points.length]
+
+    for (let i = 0; i < points.length; i++) {
+      let prev = points[(i - 1 + points.length) % points.length]
+      let current = points[i]
+      let next = points[(i + 1) % points.length]
 
       // 두 벡터 계산 (prev -> current, current -> next)
-      var vector1 = { x: current.x - prev.x, y: current.y - prev.y }
-      var vector2 = { x: next.x - current.x, y: next.y - current.y }
+      let vector1 = { x: current.x - prev.x, y: current.y - prev.y }
+      let vector2 = { x: next.x - current.x, y: next.y - current.y }
 
       // 벡터의 길이 계산
-      var length1 = Math.sqrt(vector1.x * vector1.x + vector1.y * vector1.y)
-      var length2 = Math.sqrt(vector2.x * vector2.x + vector2.y * vector2.y)
+      let length1 = Math.sqrt(vector1.x * vector1.x + vector1.y * vector1.y)
+      let length2 = Math.sqrt(vector2.x * vector2.x + vector2.y * vector2.y)
 
       // 벡터를 단위 벡터로 정규화
-      var unitVector1 = { x: vector1.x / length1, y: vector1.y / length1 }
-      var unitVector2 = { x: vector2.x / length2, y: vector2.y / length2 }
+      let unitVector1 = { x: vector1.x / length1, y: vector1.y / length1 }
+      let unitVector2 = { x: vector2.x / length2, y: vector2.y / length2 }
 
       // 법선 벡터 계산 (왼쪽 방향)
-      var normal1 = { x: -unitVector1.y, y: unitVector1.x }
-      var normal2 = { x: -unitVector2.y, y: unitVector2.x }
+      let normal1 = { x: -unitVector1.y, y: unitVector1.x }
+      let normal2 = { x: -unitVector2.y, y: unitVector2.x }
 
       // 법선 벡터 평균 계산
-      var averageNormal = {
+      let averageNormal = {
         x: (normal1.x + normal2.x) / 2,
         y: (normal1.y + normal2.y) / 2,
       }
 
       // 평균 법선 벡터를 단위 벡터로 정규화
-      var lengthNormal = Math.sqrt(averageNormal.x * averageNormal.x + averageNormal.y * averageNormal.y)
-      var unitNormal = {
+      let lengthNormal = Math.sqrt(averageNormal.x * averageNormal.x + averageNormal.y * averageNormal.y)
+      let unitNormal = {
         x: averageNormal.x / lengthNormal,
         y: averageNormal.y / lengthNormal,
       }
 
-      if (concavePointIndices[0] === i || concavePointIndices[1] === i) {
-        //인덱스가 배열이랑 같으면
-        if ((concavePointIndices[0] === 4 && concavePointIndices[1] === 5) || (concavePointIndices[0] === 2 && concavePointIndices[1] === 3)) {
-          offsetX = 1
-          offsetY = (offsetInputY / transformedMax) * originalMax * 2
-        } else {
-          offsetX = (offsetInputX / transformedMax) * originalMax * 2
-          offsetY = 1
-        }
-      } else {
-        offsetX = (offsetInputX / transformedMax) * originalMax * 2
-        offsetY = (offsetInputY / transformedMax) * originalMax * 2
-      }
+      offsetX = (offsetInputX / transformedMax) * originalMax * 2
+      offsetY = (offsetInputY / transformedMax) * originalMax * 2
 
       // 오프셋 적용
-      var offsetPoint = {
+      let offsetPoint = {
         x1: current.x + unitNormal.x * offsetX,
         y1: current.y + unitNormal.y * offsetY,
       }
@@ -2171,6 +2191,7 @@ export function useMode() {
     }
 
     const outlinePolygon = makePolygon(offsetPoints)
+    outlinePolygon.setViewLengthText(false)
 
     // 아웃라인 폴리곤의 각 변을 선으로 생성
     for (let i = 0; i < outlinePolygon.points.length; i++) {
@@ -2182,6 +2203,7 @@ export function useMode() {
         strokeWidth: 2,
         property: 'normal',
         fontSize: 14,
+        idx: i,
       })
 
       // 선을 배열에 추가
@@ -2191,13 +2213,8 @@ export function useMode() {
 
     canvas?.remove(outlinePolygon) //임시 폴리곤을 삭제
 
-    //라인들을 좌측에서 -> 우측으로 그리는거처럼 데이터 보정
-    outLines = reSortQlineArray(outLines)
-
     let parallelLinesIdx = concavePointIndices[0] + 4 //들어간선에 무조건 평행하는 선 찾기
-    let parallelLines = outLines[parallelLinesIdx]
     if (parallelLinesIdx >= outLines.length) {
-      parallelLines = outLines[parallelLinesIdx - outLines.length]
       parallelLinesIdx = parallelLinesIdx - outLines.length
     }
 
@@ -2206,10 +2223,220 @@ export function useMode() {
     let horiCenterLine = []
     let shorVertCenterLine = []
 
+    let edgeIndexArray = []
+
     if (concavePointIndices[0] % 2 === 0) {
-      // 오목한 부분이 세로선일때 ㄷ, 역ㄷ
+      //concave가 짝수면 좌우로 그려진 ㄷ자
+      //케라바 색을 바꾼다
+      lines.forEach((line, index) => {
+        if (index % 2 === 0) {
+          line.line.set('stroke', 'skyblue')
+          if (concavePointIndices[0] !== index) {
+            edgeIndexArray.push(index)
+          }
+        }
+      })
+
+      outLines = reSortQlineArray(outLines)
+      edgeIndexArray.forEach((idx, index) => {
+        //가로라인이 케라바 라인임
+        if (concavePointIndices[0] !== idx) {
+          //오목이가 아니면 반으로 갈라서 계산
+
+          //카라바 선의 2분할 치수를 그림
+          let halfLength = outLines[idx].length / 2
+          let centerLine1 = new QLine([outLines[idx].x1, outLines[idx].y1, outLines[idx].x1, outLines[idx].y1 + halfLength], centerLineOpt)
+          canvas.add(centerLine1)
+
+          let centerLine2 = new QLine([outLines[idx].x1, centerLine1.y2, outLines[idx].x2, centerLine1.y2 + halfLength], centerLineOpt)
+          canvas.add(centerLine2)
+          canvas.remove(outLines[idx]) //기존 라인 삭제
+
+          halfHoriCenterLinePoint.push({ index: idx, x1: centerLine1.x1, y1: centerLine1.y1, x2: centerLine1.x2, y2: centerLine1.y2 }) //각 카라바 라인의 1번이 마지막점을 잡아서 센터선으로 설정
+        }
+      })
+
+      // //각 센터 라인을 그림
+      halfHoriCenterLinePoint.forEach((centerPoint) => {
+        let tmpX2 = parallelLinesIdx !== centerPoint.index ? concaveLine.line.x2 : outLines[concavePointIndices[0]].x1 //평행선에서 내려오는 선은 아웃라인에 닿아야한다
+
+        let line = new QLine([centerPoint.x2, centerPoint.y2, tmpX2, centerPoint.y2], centerLineOpt)
+        canvas.add(line)
+
+        line['arrayIndex'] = centerPoint.index //커스텀으로 기존 index를 넣어줌
+        vertCenterLine.push(line)
+      })
+
+      vertCenterLine = reSortQlineArray(vertCenterLine)
+      lines = reSortQlineArray(lines)
+
+      //해당라인에서 만나는점을 계산
+      vertCenterLine.forEach((vertLine) => {
+        if (parallelLinesIdx !== vertLine.arrayIndex) {
+          //평행선을 제외한 애들만 네모를 연결
+          let nearLine
+          let nearOutline
+          if (vertLine.arrayIndex > concaveLine.index) {
+            //센터에 인덱스가 오목점 보다 크면 다음 작으면 앞에꺼
+            nearLine = lines[concaveLine.index + 1]
+            nearOutline = outLines[concaveLine.index + 1]
+          } else {
+            nearLine = lines[concaveLine.index - 1]
+            nearOutline = outLines[concaveLine.index - 1]
+          }
+
+          let nearLineY = nearLine.y1
+          if (parallelLinesIdx < concaveLine.index) {
+            //오목점 위치가 평행선보다 크면 위쪽으로 오목
+            nearLineY = nearLine.y2
+          }
+
+          //기존에 있는 라인에서 연장해서 새로 그림
+          let centerExtendHoriLine = new QLine([vertLine.x1, nearOutline.line.y1, vertLine.x2, nearOutline.line.y2], centerLineOpt)
+          canvas.add(centerExtendHoriLine)
+          canvas.remove(nearOutline)
+          outLines.splice(nearOutline.idx, 1, centerExtendHoriLine) //아웃라인에 데이터를 다시 넣는다
+
+          //가로형에선 기본으로 ㄷ자 형태로 한다
+          let centerExtendLine = new QLine([vertLine.line.x1, vertLine.line.y1, centerExtendHoriLine.x1, centerExtendHoriLine.y1], centerLineOpt)
+
+          //오목이가 배열에 반보다 작으면 역 ㄷ자 여서 변경
+          if (concavePointIndices[0] < outLines.length / 2) {
+            centerExtendLine = new QLine([vertLine.line.x2, vertLine.line.y2, centerExtendHoriLine.x2, centerExtendHoriLine.y2], centerLineOpt)
+          }
+
+          canvas.add(centerExtendLine) //새로그리고
+
+          let betweenCenterLine = (vertLine.line.x1 + vertLine.line.x2) / 2
+          let centerDashLine = new QLine([betweenCenterLine, centerExtendLine.y1, betweenCenterLine, centerExtendLine.y2], dashedCenterLineOpt)
+
+          canvas.add(centerDashLine)
+          horiCenterLine.push(centerDashLine)
+          shorVertCenterLine.push(vertLine) //마지막에 가운데 선을 긋기 위해 담음
+        } else {
+          let longDashLine = halfHoriCenterLinePoint.find((obj) => obj.index === parallelLinesIdx) //평행선
+
+          let dashCenterExtendLineLength = longDashLine.y2 - longDashLine.y1 //y반개 길이
+          let betweenCenterLine = (vertLine.line.x1 + vertLine.line.x2) / 2 //y의 길이
+          let totalLength = ((longDashLine.y2 - longDashLine.y1) * 2) / dashCenterExtendLineLength //2개로 나눔
+
+          //반 쪼개서 그린다
+          for (let i = 0; i < totalLength; i++) {
+            //2번에 나눠서
+            let startY = i === 0 ? longDashLine.y1 : longDashLine.y1 + dashCenterExtendLineLength //시작 하는 y의 좌표
+            //x값은 고정이임 //TODO: 지붕 각도 계산법에 의해 재계산해야함
+            let centerDashLine = new QLine([betweenCenterLine, startY, betweenCenterLine, startY + dashCenterExtendLineLength], dashedCenterLineOpt)
+            canvas.add(centerDashLine)
+            horiCenterLine.push(centerDashLine)
+          }
+        }
+      })
+
+      //마지막에 오목한 외곽선을 연장한다
+      const tmpLastOutLine = outLines[concavePointIndices[0]]
+      const lastOutLine = new QLine([tmpLastOutLine.x1, shorVertCenterLine[0].y1, tmpLastOutLine.x1, shorVertCenterLine[1].y1], centerLineOpt)
+      canvas.add(lastOutLine)
+      canvas.remove(tmpLastOutLine)
+
+      //폴리곤 패턴을 그리기 위해 작성
+      let tmpVertCenterLine = outLines.filter((x, index) => index % 2 !== 0) //세로만 찾음
+      tmpVertCenterLine = tmpVertCenterLine.concat(vertCenterLine)
+      tmpVertCenterLine.sort((a, b) => a.y1 - b.y1)
+      tmpVertCenterLine.push(lastOutLine)
+
+      let roofPatternPolygonArray = []
+      let tmpArray = []
+      let tmpBigArray = []
+
+      console.log('tmpVertCenterLine', tmpVertCenterLine)
+
+      const lastCenterLine = tmpVertCenterLine[tmpVertCenterLine.length - 1] //마지막 센터라인을 정의
+
+      for (let i = 0; i < tmpVertCenterLine.length - 1; i++) {
+        //-1인건 마지막은 오목한 선이라 돌 필요 없음
+        //라인 하나에 두점씩 나온다
+        let firstPointObj = {}
+        let secondPointObj = {}
+
+        let x1 = tmpVertCenterLine[i].x1
+        let y1 = tmpVertCenterLine[i].y1
+        let x2 = tmpVertCenterLine[i].x2
+        let y2 = tmpVertCenterLine[i].y2
+
+        if (i === 2 || i === 4) {
+          //작은 네모들
+          tmpArray = []
+          const prevLine = tmpVertCenterLine[i - 1] //뒤에서 앞라인을 찾는다
+          const nextLine = tmpVertCenterLine[i + 1]
+
+          //내 앞뒤 라인
+          const tmpX1 = i === 2 ? prevLine.x1 : nextLine.x1
+          const tmpY1 = i === 2 ? prevLine.y1 : nextLine.y1
+          const tmpX2 = i === 2 ? prevLine.x2 : nextLine.x2
+          const tmpY2 = i === 2 ? prevLine.y2 : nextLine.y2
+
+          firstPointObj = { x: tmpX1, y: tmpY1 }
+          secondPointObj = { x: tmpX2, y: tmpY2 }
+          tmpArray.push(firstPointObj)
+          tmpArray.push(secondPointObj)
+
+          //현재 내 선
+          firstPointObj = { x: x1, y: y1 }
+          secondPointObj = { x: x2, y: y2 }
+          tmpArray.push(firstPointObj)
+          tmpArray.push(secondPointObj)
+          roofPatternPolygonArray.push(tmpArray)
+        } else {
+          //큰 육각
+          if (i === 1 || i === 5) {
+            // 큰 폴리곤은 가운데 선으로 되야됨
+            if (outLines.length / 2 > concavePointIndices[0]) {
+              x2 = i === 1 ? lastCenterLine.x1 : lastCenterLine.x2
+              y2 = i === 1 ? lastCenterLine.y1 : lastCenterLine.y2
+            } else {
+              //오목이가 배열 전체보다 크면 오른쪽 오목이
+              x1 = i === 1 ? lastCenterLine.x1 : lastCenterLine.x2
+              y1 = i === 1 ? lastCenterLine.y2 : lastCenterLine.y1
+            }
+          }
+
+          if (i === 5) {
+            //5번일때는 앞에 3번에 선이 필요하다
+            let prevX1 = tmpVertCenterLine[i - 2].x1
+            let prevY1 = tmpVertCenterLine[i - 2].y1
+            let prevX2 = tmpVertCenterLine[i - 2].x2
+            let prevY2 = tmpVertCenterLine[i - 2].y2
+            firstPointObj = { x: prevX1, y: prevY1 }
+            secondPointObj = { x: prevX2, y: prevY2 }
+            tmpBigArray.push(firstPointObj)
+            tmpBigArray.push(secondPointObj)
+          }
+
+          firstPointObj = { x: x1, y: y1 }
+          secondPointObj = { x: x2, y: y2 }
+          tmpBigArray.push(firstPointObj)
+          tmpBigArray.push(secondPointObj)
+
+          if (i === 3 || i === 6) {
+            roofPatternPolygonArray.push(tmpBigArray)
+            tmpBigArray = []
+          }
+        }
+      }
+
+      console.log('roofPatternPolygonArray', roofPatternPolygonArray)
+
+      setRoofPolygonPattern({ roofPatternPolygonArray, lines })
     } else {
-      // 오목한 부분이 세로선일때 ㄷ, 역ㄷ
+      // 오목한 부분이 세로선일때 아래ㄷ, 위ㄷ
+      //라인들을 좌측에서 -> 우측으로 그리는거처럼 데이터 보정
+
+      lines.forEach((line, index) => {
+        if (!(index % 2 === 0)) {
+          line.line.set('stroke', 'skyblue')
+        }
+      })
+      outLines = reSortQlineArray(outLines)
       outLines.forEach((outline, index) => {
         if (!(index % 2 === 0)) {
           //세로라인이 케라바 라인임
@@ -2219,20 +2446,10 @@ export function useMode() {
 
             //카라바 선의 2분할 치수를 그림
             let halfLength = outline.length / 2
-            let centerLine1 = new QLine([outline.x1, outline.y1, outline.x1 + halfLength, outline.y1], {
-              stroke: 'red',
-              strokeWidth: 2,
-              property: 'normal',
-              fontSize: 14,
-            })
+            let centerLine1 = new QLine([outline.x1, outline.y1, outline.x1 + halfLength, outline.y1], centerLineOpt)
             canvas.add(centerLine1)
 
-            let centerLine2 = new QLine([centerLine1.x2, outline.y1, centerLine1.x2 + halfLength, outline.y1], {
-              stroke: 'red',
-              strokeWidth: 2,
-              property: 'normal',
-              fontSize: 14,
-            })
+            let centerLine2 = new QLine([centerLine1.x2, outline.y1, centerLine1.x2 + halfLength, outline.y1], centerLineOpt)
             canvas.add(centerLine2)
             canvas.remove(outline) //기존 라인 삭제
 
@@ -2243,7 +2460,9 @@ export function useMode() {
 
       //각 센터 라인을 그림
       halfHoriCenterLinePoint.forEach((centerPoint) => {
-        let line = new QLine([centerPoint.x2, centerPoint.y1, centerPoint.x2, concaveLine.line.y1], centerLineOpt)
+        let tmpY2 = parallelLinesIdx !== centerPoint.index ? concaveLine.line.y1 : outLines[concavePointIndices[0]].y2 //평행선에서 내려오는 선은 아웃라인에 닿아야한다
+
+        let line = new QLine([centerPoint.x2, centerPoint.y1, centerPoint.x2, tmpY2], centerLineOpt)
         canvas.add(line)
 
         line['arrayIndex'] = centerPoint.index //커스텀으로 기존 index를 넣어줌
@@ -2251,18 +2470,21 @@ export function useMode() {
       })
 
       vertCenterLine = reSortQlineArray(vertCenterLine)
+      lines = reSortQlineArray(lines)
 
       //해당라인에서 만나는점을 계산
       vertCenterLine.forEach((vertLine) => {
         if (parallelLinesIdx !== vertLine.arrayIndex) {
           //평행선을 제외한 애들만 네모를 연결
           let nearLine
-
+          let nearOutline
           if (vertLine.arrayIndex > concaveLine.index) {
             //센터에 인덱스가 오목점 보다 크면 다음 작으면 앞에꺼
-            nearLine = outLines[concaveLine.index + 1]
+            nearLine = lines[concaveLine.index + 1]
+            nearOutline = outLines[concaveLine.index + 1]
           } else {
-            nearLine = outLines[concaveLine.index - 1]
+            nearLine = lines[concaveLine.index - 1]
+            nearOutline = outLines[concaveLine.index - 1]
           }
 
           let nearLineY = nearLine.y1
@@ -2271,11 +2493,17 @@ export function useMode() {
             nearLineY = nearLine.y2
           }
 
-          let centerExtendLine = new QLine([vertLine.line.x1, nearLineY, nearLine.x1, nearLineY], centerLineOpt)
-          canvas.add(centerExtendLine)
+          let centerExtendLine = new QLine([vertLine.line.x1, nearLineY, nearOutline.x1, nearLineY], centerLineOpt)
+          canvas.add(centerExtendLine) //새로그리고
+
+          //기존에 있는 라인에서 연장해서 새로 그림
+          let centerExtendHoriLine = new QLine([nearOutline.line.x1, vertLine.y1, nearOutline.line.x2, vertLine.line.y2], centerLineOpt)
+          canvas.add(centerExtendHoriLine)
+          canvas.remove(nearOutline)
+          outLines.splice(nearOutline.idx, 1, centerExtendHoriLine) //아웃라인에 데이터를 다시 넣는다
 
           let betweenCenterLine = (vertLine.line.y1 + vertLine.line.y2) / 2
-          let centerDashLine = new QLine([vertLine.line.x1, betweenCenterLine, nearLine.x1, betweenCenterLine], dashedCenterLineOpt)
+          let centerDashLine = new QLine([vertLine.line.x1, betweenCenterLine, nearOutline.x1, betweenCenterLine], dashedCenterLineOpt)
 
           canvas.add(centerDashLine)
           horiCenterLine.push(centerDashLine)
@@ -2283,30 +2511,108 @@ export function useMode() {
         } else {
           let longDashLine = halfHoriCenterLinePoint.find((obj) => obj.index === parallelLinesIdx)
 
-          let dashCenterExtendLineLength = (longDashLine.x2 - longDashLine.x1) * 2
+          let dashCenterExtendLineLength = longDashLine.x2 - longDashLine.x1
           let betweenCenterLine = (vertLine.line.y1 + vertLine.line.y2) / 2
+          let totalLength = ((longDashLine.x2 - longDashLine.x1) * 2) / dashCenterExtendLineLength
 
-          let centerDashLine = new QLine(
-            [longDashLine.x1, betweenCenterLine, longDashLine.x1 + dashCenterExtendLineLength, betweenCenterLine],
-            dashedCenterLineOpt,
-          )
-          canvas.add(centerDashLine)
-          horiCenterLine.push(centerDashLine)
+          //반 쪼개서 그린다
+          for (let i = 0; i < totalLength; i++) {
+            let startX = i === 0 ? longDashLine.x1 : longDashLine.x1 + dashCenterExtendLineLength
+            let centerDashLine = new QLine([startX, betweenCenterLine, startX + dashCenterExtendLineLength, betweenCenterLine], dashedCenterLineOpt)
+            canvas.add(centerDashLine)
+            horiCenterLine.push(centerDashLine)
+          }
         }
       })
 
-      if (parallelLinesIdx < concaveLine.index) {
-        offsetY = offsetY * -1 // 위로올린다
+      //마지막에 오목한 외곽선을 연장한다
+      const tmpLastOutLine = outLines[concavePointIndices[0]]
+      const lastOutLine = new QLine([shorVertCenterLine[0].x1, tmpLastOutLine.y1, shorVertCenterLine[1].x1, tmpLastOutLine.y2], centerLineOpt)
+      canvas.add(lastOutLine)
+      canvas.remove(tmpLastOutLine)
+
+      let tmpVertCenterLine = outLines.filter((x, index) => index % 2 === 0) //세로만 찾음
+      tmpVertCenterLine = tmpVertCenterLine.concat(vertCenterLine)
+      tmpVertCenterLine.sort((a, b) => a.x1 - b.x1)
+      tmpVertCenterLine.push(lastOutLine)
+
+      let roofPatternPolygonArray = []
+      let tmpArray = []
+      let tmpBigArray = []
+
+      const lastCenterLine = tmpVertCenterLine[tmpVertCenterLine.length - 1] //마지막 센터라인을 정의
+
+      for (let i = 0; i < tmpVertCenterLine.length - 1; i++) {
+        //-1인건 마지막은 오목한 선이라 돌 필요 없음
+        //라인 하나에 두점씩 나온다
+        let firstPointObj = {}
+        let secondPointObj = {}
+
+        let x1 = tmpVertCenterLine[i].x1
+        let y1 = tmpVertCenterLine[i].y1
+        let x2 = tmpVertCenterLine[i].x2
+        let y2 = tmpVertCenterLine[i].y2
+
+        if (i === 2 || i === 4) {
+          tmpArray = []
+          const prevLine = tmpVertCenterLine[i - 1] //뒤에서 앞라인을 찾는다
+          const nextLine = tmpVertCenterLine[i + 1]
+
+          //내 앞뒤 라인
+          const tmpX1 = i === 2 ? prevLine.x1 : nextLine.x1
+          const tmpY1 = i === 2 ? prevLine.y1 : nextLine.y1
+          const tmpX2 = i === 2 ? prevLine.x2 : nextLine.x2
+          const tmpY2 = i === 2 ? prevLine.y2 : nextLine.y2
+
+          firstPointObj = { x: tmpX1, y: tmpY1 }
+          secondPointObj = { x: tmpX2, y: tmpY2 }
+          tmpArray.push(firstPointObj)
+          tmpArray.push(secondPointObj)
+
+          //현재 내 선
+          firstPointObj = { x: x1, y: y1 }
+          secondPointObj = { x: x2, y: y2 }
+          tmpArray.push(firstPointObj)
+          tmpArray.push(secondPointObj)
+          roofPatternPolygonArray.push(tmpArray)
+        } else {
+          if (i === 1 || i === 5) {
+            // 큰 폴리곤은 가운데 선으로 되야됨
+            if (outLines.length / 2 < concavePointIndices[0]) {
+              //오목이가 배열 전체보다 크면 위쪽 방향
+              x2 = i === 1 ? lastCenterLine.x2 : lastCenterLine.x1
+              y2 = i === 1 ? lastCenterLine.y2 : lastCenterLine.y1
+            } else {
+              x1 = i === 1 ? lastCenterLine.x1 : lastCenterLine.x2
+              y1 = i === 1 ? lastCenterLine.y1 : lastCenterLine.y2
+            }
+          }
+
+          if (i === 5) {
+            //5번일때는 앞에 3번에 선이 필요하다
+            let prevX1 = tmpVertCenterLine[i - 2].x1
+            let prevY1 = tmpVertCenterLine[i - 2].y1
+            let prevX2 = tmpVertCenterLine[i - 2].x2
+            let prevY2 = tmpVertCenterLine[i - 2].y2
+            firstPointObj = { x: prevX1, y: prevY1 }
+            secondPointObj = { x: prevX2, y: prevY2 }
+            tmpBigArray.push(firstPointObj)
+            tmpBigArray.push(secondPointObj)
+          }
+
+          firstPointObj = { x: x1, y: y1 }
+          secondPointObj = { x: x2, y: y2 }
+          tmpBigArray.push(firstPointObj)
+          tmpBigArray.push(secondPointObj)
+
+          if (i === 3 || i === 6) {
+            roofPatternPolygonArray.push(tmpBigArray)
+            tmpBigArray = []
+          }
+        }
       }
-
-      const lastInLine = new QLine(
-        [shorVertCenterLine[0].x1, lines[concavePointIndices[0]].y1 + offsetY, shorVertCenterLine[1].x1, lines[concavePointIndices[0]].y2 + offsetY],
-        centerLineOpt,
-      )
-      canvas.add(lastInLine)
-      canvas.remove(outLines[concavePointIndices[0]])
+      setRoofPolygonPattern({ roofPatternPolygonArray, lines })
     }
-
     canvas.renderAll()
   }
 
@@ -2835,8 +3141,6 @@ export function useMode() {
   }
 
   const makeRoofPatternPolygon = (roofStyle) => {
-    console.log('roofPolygonPattern', roofPolygonPattern)
-
     if (Object.keys(roofPolygonPattern).length === 0 && roofPolygonPattern.constructor === Object) {
       alert('객체가 비어있습니다.')
       return
@@ -2882,7 +3186,7 @@ export function useMode() {
 
     const commonOption = {
       fill: pattern,
-      selectable: false,
+      selectable: true,
       fontSize: 15, // fontSize는 필요에 따라 조정
     }
 
diff --git a/src/util/qpolygon-utils.js b/src/util/qpolygon-utils.js
index b3f9529b..ba5be5e7 100644
--- a/src/util/qpolygon-utils.js
+++ b/src/util/qpolygon-utils.js
@@ -1,19 +1,7 @@
 import { fabric } from 'fabric'
 import QPolygon from '@/components/fabric/QPolygon3'
 import { QLine } from '@/components/fabric/QLine'
-import {
-  calculateDistance,
-  calculateIntersection,
-  calculateIntersection2,
-  distanceBetweenPoints,
-  findClosestLineToPoint,
-  findClosestPoint,
-  findClosestPointWithDifferentXY,
-  findIntersection1,
-  getRoofHypotenuse,
-  removeDuplicatePoints,
-} from '@/util/canvas-util'
-import { help } from 'mathjs'
+import { calculateIntersection2, distanceBetweenPoints, findClosestPoint } from '@/util/canvas-util'
 
 export const defineQPloygon = () => {
   fabric.QPolygon = fabric.util.createClass(fabric.Group, {})
@@ -58,7 +46,9 @@ export const drawHelpLineInHexagon = (polygon, chon) => {
     const angle1 = Math.atan2(wallLine.y1 - line.y1, wallLine.x1 - line.x1)
     const angle2 = Math.atan2(wallLine.y2 - line.y2, wallLine.x2 - line.x2)
 
-    const helpLineLength = line.length * 2
+    // line을 이등변 삼각형의 밑변으로 보고 높이를 구한다.
+
+    const helpLineLength = Math.sqrt(2 * Math.pow(line.length / 2, 2))
 
     const firstX2 = Math.floor(line.x1 + helpLineLength * Math.cos(angle1))
     const firstY2 = Math.floor(line.y1 + helpLineLength * Math.sin(angle1))
@@ -144,6 +134,7 @@ export const drawHelpLineInHexagon = (polygon, chon) => {
   helpLines = helpLines.filter((line) => line.relatedPoints?.length > 0)
 
   ridgeStartPoints.forEach((point) => {
+    point.alreadyIntersected = false
     // x 혹은 y가 같으면서 가장 가까운 점을 찾는다.
     let arrivalPoint
     let hipLine
@@ -185,24 +176,69 @@ export const drawHelpLineInHexagon = (polygon, chon) => {
 
       polygon.canvas.renderAll()
       ridgeEndPoints.push(arrivalPoint)
+
+      point.alreadyIntersected = true
     }
   })
 
   /**
    * 안쓰는 점 제거
    */
-  centerInterSectionPoints.forEach((point) => {
-    ridgeEndPoints.forEach((endPoint) => {
-      if (!(Math.abs(point.x - endPoint.x) < 2 && Math.abs(point.y - endPoint.y) < 2)) {
-        centerInterSectionPoints.splice(centerInterSectionPoints.indexOf(point), 1)
+
+  const ridgeEndRemainingPoints = [...ridgeEndPoints]
+
+  const uniqueInterSectionPoints = Array.from(new Set(centerInterSectionPoints.map((point) => `${point.x},${point.y}`))).map((key) => {
+    const [x, y] = key.split(',').map(Number)
+    return { x, y }
+  })
+
+  while (ridgeEndRemainingPoints.length > 0) {
+    const point = ridgeEndRemainingPoints.shift()
+    let isExist = false
+    uniqueInterSectionPoints.forEach((uniquePoint) => {
+      const degree = calculateAngle(point, uniquePoint)
+
+      if (Math.abs(45 - Math.abs(degree)) <= 5 || Math.abs(135 - Math.abs(degree)) <= 5) {
+        const line = new QLine([point.x, point.y, uniquePoint.x, uniquePoint.y], {
+          stroke: 'purple',
+          fontSize: polygon.fontSize,
+        })
+
+        ridgeEndPoints.push(uniquePoint)
+
+        ridgeEndPoints.splice(ridgeEndPoints.indexOf(point), 1)
+
+        isExist = true
+
+        polygon.canvas.add(line)
+        polygon.canvas.renderAll()
+      }
+
+      if (isExist) {
+        return
       }
     })
-  })
+  }
+
+  const ridgeEndRemainingPoints2 = [...ridgeEndPoints]
+
+  while (ridgeEndRemainingPoints2.length > 0) {
+    // 남아있는 점끼리 연결한다.
+    const point = ridgeEndRemainingPoints2.shift()
+    const closestPoint = findClosestPoint(point, ridgeEndRemainingPoints2)
+    if (!closestPoint) continue
+    const line = new QLine([point.x, point.y, closestPoint.x, closestPoint.y], {
+      stroke: 'purple',
+      fontSize: polygon.fontSize,
+    })
+
+    polygon.canvas.add(line)
+    polygon.canvas.renderAll()
+  }
 
   // ridgeEndPoints와 가까운 centerInterSectionPoints를 찾아서 연결한다.
   const remainingPoints = centerInterSectionPoints
-  const ridgeEndRemainingPoints = ridgeEndPoints
-
+  /*
   helpLines.forEach((line) => {
     remainingPoints.forEach((point) => {
       if (line.relatedPoints.includes(point)) {
@@ -217,18 +253,7 @@ export const drawHelpLineInHexagon = (polygon, chon) => {
     })
   })
 
-  while (ridgeEndRemainingPoints.length > 0) {
-    const point = ridgeEndRemainingPoints.shift()
-    const closestPoint = findClosestPoint(point, remainingPoints)
-    if (!closestPoint) continue
-    const line = new QLine([point.x, point.y, closestPoint.x, closestPoint.y], {
-      stroke: 'green',
-      fontSize: polygon.fontSize,
-    })
 
-    polygon.canvas.add(line)
-    polygon.canvas.renderAll()
-  }
 
   // centerInterSectionPoints에 남아있는 점들을 가까운 점끼리 연결한다.
   while (remainingPoints.length > 0) {
@@ -243,8 +268,25 @@ export const drawHelpLineInHexagon = (polygon, chon) => {
     polygon.canvas.add(line)
     polygon.canvas.renderAll()
   }
+
+  const notIntersectedRidgeStartPoints = ridgeStartPoints.filter((point) => !point.alreadyIntersected)
+  // 만나지 않은 마루 시작점
+  while (notIntersectedRidgeStartPoints.length > 0) {
+    const point = notIntersectedRidgeStartPoints.shift()
+    const closestPoint = findClosestPoint(point, notIntersectedRidgeStartPoints)
+    if (!closestPoint) continue
+    const line = new QLine([point.x, point.y, closestPoint.x, closestPoint.y], {
+      stroke: 'purple',
+      fontSize: polygon.fontSize,
+    })
+
+    polygon.canvas.add(line)
+    polygon.canvas.renderAll()
+  }*/
 }
 
+export const drawHelpLineInHexagon2 = (polygon, chon) => {}
+
 export const drawCenterLines = (polygon) => {
   const centerLines = []
 
@@ -336,3 +378,9 @@ const getOneSideLines = (polygon) => {
     return line
   })
 }
+const calculateAngle = (point1, point2) => {
+  const deltaX = point2.x - point1.x
+  const deltaY = point2.y - point1.y
+  const angleInRadians = Math.atan2(deltaY, deltaX)
+  return angleInRadians * (180 / Math.PI)
+}