Showing
2 changed files
with
13 additions
and
5 deletions
| ... | @@ -11,12 +11,12 @@ import dayjs from "dayjs"; | ... | @@ -11,12 +11,12 @@ import dayjs from "dayjs"; |
| 11 | 11 | ||
| 12 | const tileSize = 512; | 12 | const tileSize = 512; |
| 13 | 13 | ||
| 14 | -export function TileCutter(imageURL, bounds, zoomLevel) { | 14 | +export function TileCutter(imageURL, bounds, zoomLevel, imageRotation = 0) { |
| 15 | const img = new Image(); | 15 | const img = new Image(); |
| 16 | img.crossOrigin = "Anonymous"; // 避免跨域问题 | 16 | img.crossOrigin = "Anonymous"; // 避免跨域问题 |
| 17 | img.src = imageURL; | 17 | img.src = imageURL; |
| 18 | img.onload = () => { | 18 | img.onload = () => { |
| 19 | - sliceImageToTiles(img, bounds, zoomLevel); | 19 | + sliceImageToTiles(img, bounds, zoomLevel, imageRotation); |
| 20 | }; | 20 | }; |
| 21 | } | 21 | } |
| 22 | 22 | ||
| ... | @@ -27,7 +27,7 @@ export function TileCutter(imageURL, bounds, zoomLevel) { | ... | @@ -27,7 +27,7 @@ export function TileCutter(imageURL, bounds, zoomLevel) { |
| 27 | * @param {L.LatLngBounds} bounds - 图片边界范围,包含西南角和东北角的经纬度 | 27 | * @param {L.LatLngBounds} bounds - 图片边界范围,包含西南角和东北角的经纬度 |
| 28 | * @param {number} zoomLevel - 地图缩放级别 | 28 | * @param {number} zoomLevel - 地图缩放级别 |
| 29 | */ | 29 | */ |
| 30 | -function sliceImageToTiles(image, bounds, zoomLevel) { | 30 | +function sliceImageToTiles(image, bounds, zoomLevel, imageRotation) { |
| 31 | // 创建画布及上下文 | 31 | // 创建画布及上下文 |
| 32 | const canvas = document.createElement("canvas"); | 32 | const canvas = document.createElement("canvas"); |
| 33 | const ctx = canvas.getContext("2d"); | 33 | const ctx = canvas.getContext("2d"); |
| ... | @@ -89,6 +89,11 @@ function sliceImageToTiles(image, bounds, zoomLevel) { | ... | @@ -89,6 +89,11 @@ function sliceImageToTiles(image, bounds, zoomLevel) { |
| 89 | // 清空画布 | 89 | // 清空画布 |
| 90 | ctx.clearRect(0, 0, tileSize * scaleFactor, tileSize * scaleFactor); | 90 | ctx.clearRect(0, 0, tileSize * scaleFactor, tileSize * scaleFactor); |
| 91 | 91 | ||
| 92 | + // 旋转画布 | ||
| 93 | + ctx.translate(tileSize / 2, tileSize / 2); // 移动原点到画布中心 | ||
| 94 | + ctx.rotate(imageRotation * Math.PI / 180); // 旋转画布 | ||
| 95 | + ctx.translate(-tileSize / 2, -tileSize / 2); // 移回原点 | ||
| 96 | + | ||
| 92 | // 绘制图片到画布 | 97 | // 绘制图片到画布 |
| 93 | ctx.drawImage( | 98 | ctx.drawImage( |
| 94 | image, | 99 | image, |
| ... | @@ -96,6 +101,9 @@ function sliceImageToTiles(image, bounds, zoomLevel) { | ... | @@ -96,6 +101,9 @@ function sliceImageToTiles(image, bounds, zoomLevel) { |
| 96 | tileImgX, tileImgY, tileImgWidth, tileImgHeight // 目标画布区域(保持实际位置和比例) | 101 | tileImgX, tileImgY, tileImgWidth, tileImgHeight // 目标画布区域(保持实际位置和比例) |
| 97 | ); | 102 | ); |
| 98 | 103 | ||
| 104 | + // 恢复画布旋转 | ||
| 105 | + ctx.setTransform(1, 0, 0, 1, 0, 0); | ||
| 106 | + | ||
| 99 | // 将画布内容转换为Blob对象 | 107 | // 将画布内容转换为Blob对象 |
| 100 | canvas.toBlob((blob) => { | 108 | canvas.toBlob((blob) => { |
| 101 | if (!blob) { | 109 | if (!blob) { | ... | ... |
| 1 | <!-- | 1 | <!-- |
| 2 | * @Date: 2025-01-22 11:40:12 | 2 | * @Date: 2025-01-22 11:40:12 |
| 3 | * @LastEditors: hookehuyr hookehuyr@gmail.com | 3 | * @LastEditors: hookehuyr hookehuyr@gmail.com |
| 4 | - * @LastEditTime: 2025-03-04 16:07:51 | 4 | + * @LastEditTime: 2025-03-04 17:53:13 |
| 5 | * @FilePath: /map-demo/src/views/mapCutter.vue | 5 | * @FilePath: /map-demo/src/views/mapCutter.vue |
| 6 | * @Description: 文件描述 | 6 | * @Description: 文件描述 |
| 7 | --> | 7 | --> |
| ... | @@ -361,7 +361,7 @@ function cutTiles() { | ... | @@ -361,7 +361,7 @@ function cutTiles() { |
| 361 | return; | 361 | return; |
| 362 | } | 362 | } |
| 363 | // TAG: 切割瓦片等级 | 363 | // TAG: 切割瓦片等级 |
| 364 | - TileCutter(imageURL.value, bounds.value, map_zoom.value); // 传入图片、地图范围、缩放级别 | 364 | + TileCutter(imageURL.value, bounds.value, map_zoom.value, imageRotation.value); // 传入图片、地图范围、缩放级别和旋转角度 |
| 365 | } | 365 | } |
| 366 | 366 | ||
| 367 | // ✅ 1. 位置移动 | 367 | // ✅ 1. 位置移动 | ... | ... |
-
Please register or login to post a comment