Fixed template download/conversion corruption

dist/BlueMarble-For-GreasyFork.user.js

@@ -2,7 +2,7 @@
 // @name            Blue Marble
 // @name:en         Blue Marble
 // @namespace       https://github.com/SwingTheVine/
-// @version         0.90.68
+// @version         0.90.76
 // @description     A userscript to enhance the user experience on Wplace.live. This includes, but is not limited to: uploading images to display locally on a canvas, adding a button to move the Wplace color palette menu, and other QoL features.
 // @description:en  A userscript to enhance the user experience on Wplace.live. This includes, but is not limited to: uploading images to display locally on a canvas, adding a button to move the Wplace color palette menu, and other QoL features.
 // @author          SwingTheVine
@@ -2066,20 +2066,44 @@ Getting Y ${pixelY}-${pixelY + drawSizeY}`);
       console.log(`Absolute coordinates: (${absoluteSmallestX}, ${absoluteSmallestY}) and (${absoluteLargestX}, ${absoluteLargestY})`);
       const templateWidth = absoluteLargestX - absoluteSmallestX;
       const templateHeight = absoluteLargestY - absoluteSmallestY;
+      const canvasWidth = templateWidth * this.drawMult;
+      const canvasHeight = templateHeight * this.drawMult;
       console.log(`Template Width: ${templateWidth}
-Template Height: ${templateHeight}`);
-      const canvas = new OffscreenCanvas(templateWidth, templateHeight);
+Template Height: ${templateHeight}
+Canvas Width: ${canvasWidth}
+Canvas Height: ${canvasHeight}`);
+      const canvas = new OffscreenCanvas(canvasWidth, canvasHeight);
       const context = canvas.getContext("2d");
-      context.imageSmoothingEnabled = false;
       templateTileKeysSorted.forEach((key, index) => {
         const [tileX, tileY, pixelX, pixelY] = key.split(",").map(Number);
         const tileImage = templateTilesImageSorted[index];
         const absoluteX = tileX * this.tileSize + pixelX;
         const absoluteY = tileY * this.tileSize + pixelY;
         console.log(`Drawing tile (${tileX}, ${tileY}, ${pixelX}, ${pixelY}) (${absoluteX}, ${absoluteY}) at (${absoluteX - absoluteSmallestX}, ${absoluteY - absoluteSmallestY}) on the canvas...`);
-        context.drawImage(tileImage, absoluteX - absoluteSmallestX, absoluteY - absoluteSmallestY, tileImage.width / this.drawMult, tileImage.height / this.drawMult);
+        context.drawImage(tileImage, (absoluteX - absoluteSmallestX) * this.drawMult, (absoluteY - absoluteSmallestY) * this.drawMult, tileImage.width, tileImage.height);
       });
-      return canvas.convertToBlob({ type: "image/png" });
+      context.globalCompositeOperation = "destination-over";
+      context.drawImage(canvas, 0, -1);
+      context.drawImage(canvas, 0, 1);
+      context.drawImage(canvas, -1, 0);
+      context.drawImage(canvas, 1, 0);
+      const smallCanvas = new OffscreenCanvas(templateWidth, templateHeight);
+      const smallContext = smallCanvas.getContext("2d");
+      smallContext.imageSmoothingEnabled = false;
+      smallContext.drawImage(
+        canvas,
+        0,
+        0,
+        templateWidth * this.drawMult,
+        templateHeight * this.drawMult,
+        // Source image size
+        0,
+        0,
+        templateWidth,
+        templateHeight
+        // Small canvas size
+      );
+      return smallCanvas.convertToBlob({ type: "image/png" });
       function convertBase64ToImage(base64) {
         return new Promise((resolve, reject) => {
           const image = new Image();

docs/README.md

@@ -51,7 +51,7 @@
 <a href="https://discord.gg/tpeBPy46hf" target="_blank" rel="noopener noreferrer"><img alt="Contact Me" src="https://img.shields.io/badge/Contact_Me-gray?style=flat&logo=Discord&logoColor=white&logoSize=auto&labelColor=cornflowerblue"></a>
 <a href="https://bluemarble.lol/" target="_blank" rel="noopener noreferrer"><img alt="Blue Marble Website" src="https://img.shields.io/badge/Blue_Marble_Website-crqch-blue?style=flat&logo=globe&logoColor=white"></a>
 <a href="" target="_blank" rel="noopener noreferrer"><img alt="WakaTime" src="https://img.shields.io/badge/Coding_Time-212hrs_17mins-blue?style=flat&logo=wakatime&logoColor=black&logoSize=auto&labelColor=white"></a>
-<a href="" target="_blank" rel="noopener noreferrer"><img alt="Total Patches" src="https://img.shields.io/badge/Total_Patches-1107-black?style=flat"></a>
+<a href="" target="_blank" rel="noopener noreferrer"><img alt="Total Patches" src="https://img.shields.io/badge/Total_Patches-1115-black?style=flat"></a>
 <a href="" target="_blank" rel="noopener noreferrer"><img alt="Total Lines of Code" src="https://img.shields.io/badge/Lines_Of_Code-5908-blue?style=flat"></a>
 <a href="" target="_blank" rel="noopener noreferrer"><img alt="Total Comments" src="https://img.shields.io/badge/Lines_Of_Comments-5160-blue?style=flat"></a>
 <a href="" target="_blank" rel="noopener noreferrer"><img alt="Compression" src="https://img.shields.io/badge/Compression-73.34%25-blue"></a>

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "wplace-bluemarble",
-  "version": "0.90.68",
+  "version": "0.90.76",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "wplace-bluemarble",
-      "version": "0.90.68",
+      "version": "0.90.76",
       "devDependencies": {
         "esbuild": "^0.25.0",
         "jsdoc": "^4.0.5",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "wplace-bluemarble",
-  "version": "0.90.68",
+  "version": "0.90.76",
   "type": "module",
   "homepage": "https://bluemarble.lol/",
   "repository": {

src/BlueMarble.meta.js

@@ -2,7 +2,7 @@
 // @name            Blue Marble
 // @name:en         Blue Marble
 // @namespace       https://github.com/SwingTheVine/
-// @version         0.90.68
+// @version         0.90.76
 // @description     A userscript to enhance the user experience on Wplace.live. This includes, but is not limited to: uploading images to display locally on a canvas, adding a button to move the Wplace color palette menu, and other QoL features.
 // @description:en  A userscript to enhance the user experience on Wplace.live. This includes, but is not limited to: uploading images to display locally on a canvas, adding a button to move the Wplace color palette menu, and other QoL features.
 // @author          SwingTheVine

src/templateManager.js

@@ -1,5 +1,5 @@
 import Template from "./Template";
-import { base64ToUint8, colorpaletteForBlueMarble, consoleError, consoleLog, consoleWarn, localizeNumber, numberToEncoded, sleep } from "./utils";
+import { base64ToUint8, colorpaletteForBlueMarble, consoleError, consoleLog, consoleWarn, localizeNumber, numberToEncoded, sleep, viewCanvasInNewTab } from "./utils";
 import WindowWizard from "./WindowWizard";
 
 /** Manages the template system.
@@ -351,13 +351,14 @@ export default class TemplateManager {
     // Calculates the template/canvas width and height
     const templateWidth = absoluteLargestX - absoluteSmallestX;
     const templateHeight = absoluteLargestY - absoluteSmallestY;
+    const canvasWidth = templateWidth * this.drawMult;
+    const canvasHeight = templateHeight * this.drawMult;
 
-    console.log(`Template Width: ${templateWidth}\nTemplate Height: ${templateHeight}`);
+    console.log(`Template Width: ${templateWidth}\nTemplate Height: ${templateHeight}\nCanvas Width: ${canvasWidth}\nCanvas Height: ${canvasHeight}`);
 
     // Creates a new canvas the size of the template
-    const canvas = new OffscreenCanvas(templateWidth, templateHeight);
+    const canvas = new OffscreenCanvas(canvasWidth, canvasHeight);
     const context = canvas.getContext('2d');
-    context.imageSmoothingEnabled = false; // Forces nearest neighbor scaling algorithm
 
     // For each tile...
     templateTileKeysSorted.forEach((key, index) => {
@@ -373,12 +374,36 @@ export default class TemplateManager {
 
       console.log(`Drawing tile (${tileX}, ${tileY}, ${pixelX}, ${pixelY}) (${absoluteX}, ${absoluteY}) at (${absoluteX - absoluteSmallestX}, ${absoluteY - absoluteSmallestY}) on the canvas...`);
 
-      // Draws the tile to the canvas AND scales it down in the process
-      context.drawImage(tileImage, absoluteX - absoluteSmallestX, absoluteY - absoluteSmallestY, tileImage.width / this.drawMult, tileImage.height / this.drawMult);
+      // Draws the tile to the canvas
+      context.drawImage(tileImage, (absoluteX - absoluteSmallestX) * this.drawMult, (absoluteY - absoluteSmallestY) * this.drawMult, tileImage.width, tileImage.height);
     })
 
+    // The expanded template is now on the canvas
+
+    context.globalCompositeOperation = "destination-over"; // Draw under the canvas (new draws only show in place of transparent pixels)
+
+    // Extends the template vertically to create columns
+    context.drawImage(canvas, 0, -1);
+    context.drawImage(canvas, 0, 1);
+
+    // Extends the columns horizontally to become a solid template
+    context.drawImage(canvas, -1, 0);
+    context.drawImage(canvas, 1, 0);
+
+    const smallCanvas = new OffscreenCanvas(templateWidth, templateHeight);
+    const smallContext = smallCanvas.getContext("2d");
+
+    smallContext.imageSmoothingEnabled = false; // Forces nearest neighbor scaling algorithm
+
+    // Downscale the template
+    smallContext.drawImage(
+      canvas,
+      0, 0, templateWidth * this.drawMult, templateHeight * this.drawMult, // Source image size
+      0, 0, templateWidth, templateHeight // Small canvas size
+    );
+
     // Returns a blob
-    return canvas.convertToBlob({ type: 'image/png' });
+    return smallCanvas.convertToBlob({ type: 'image/png' });
 
     /** Turns a chunked base 64 string template tile into an Image template tile
      * @param {string} base64 - Base64 string of image data (without URI header)