Added web worker to improve tile analysis performance

src/components/gameMaster/mapEditor/partials/TileList.vue

@@ -29,7 +29,7 @@
                       :src="`${config.server_endpoint}/textures/tiles/${group.parent.id}.png`"
                       :alt="group.parent.name"
                       @click="openGroup(group)"
-                      @load="() => processTile(group.parent)"
+                      @load="() => tileProcessor.processTile(group.parent)"
                       :class="{
                         'border-cyan shadow-lg': isActiveTile(group.parent),
                         'border-transparent hover:border-gray-300': !isActiveTile(group.parent)
@@ -88,13 +88,14 @@
 import config from '@/application/config'
 import type { Tile } from '@/application/types'
 import { useMapEditorComposable } from '@/composables/useMapEditorComposable'
+import { useTileProcessingComposable } from '@/composables/useTileProcessingComposable'
 import { TileStorage } from '@/storage/storages'
-import { liveQuery } from 'dexie'
 import { computed, onMounted, onUnmounted, ref } from 'vue'
 
 const isOpen = ref(false)
 const tileStorage = new TileStorage()
 const mapEditor = useMapEditorComposable()
+const tileProcessor = useTileProcessingComposable()
 const searchQuery = ref('')
 const selectedTags = ref<string[]>([])
 const tileCategories = ref<Map<string, string>>(new Map())
@@ -121,7 +122,7 @@ const groupedTiles = computed(() => {
   })
 
   filteredTiles.forEach((tile) => {
-    const parentGroup = groups.find((group) => areTilesRelated(group.parent, tile))
+    const parentGroup = groups.find((group) => tileProcessor.areTilesRelated(group.parent, tile))
     if (parentGroup && parentGroup.parent.id !== tile.id) {
       parentGroup.children.push(tile)
     } else {
@@ -132,32 +133,6 @@ const groupedTiles = computed(() => {
   return groups
 })
 
-const tileColorData = ref<Map<string, { r: number; g: number; b: number }>>(new Map())
-const tileEdgeData = ref<Map<string, number>>(new Map())
-
-function areTilesRelated(tile1: Tile, tile2: Tile): boolean {
-  const colorSimilarityThreshold = 30 // Adjust this value as needed
-  const edgeComplexitySimilarityThreshold = 20 // Adjust this value as needed
-
-  const color1 = tileColorData.value.get(tile1.id)
-  const color2 = tileColorData.value.get(tile2.id)
-  const edge1 = tileEdgeData.value.get(tile1.id)
-  const edge2 = tileEdgeData.value.get(tile2.id)
-
-  if (!color1 || !color2 || edge1 === undefined || edge2 === undefined) {
-    return false
-  }
-
-  const colorDifference = Math.sqrt(Math.pow(color1.r - color2.r, 2) + Math.pow(color1.g - color2.g, 2) + Math.pow(color1.b - color2.b, 2))
-
-  const edgeComplexityDifference = Math.abs(edge1 - edge2)
-
-  const namePrefix1 = tile1.name.split('_')[0]
-  const namePrefix2 = tile2.name.split('_')[0]
-
-  return colorDifference <= colorSimilarityThreshold && edgeComplexityDifference <= edgeComplexitySimilarityThreshold && namePrefix1 === namePrefix2
-}
-
 const toggleTag = (tag: string) => {
   if (selectedTags.value.includes(tag)) {
     selectedTags.value = selectedTags.value.filter((t) => t !== tag)
@@ -166,59 +141,6 @@ const toggleTag = (tag: string) => {
   }
 }
 
-function processTile(tile: Tile) {
-  const img = new Image()
-  img.crossOrigin = 'Anonymous'
-  img.onload = () => {
-    const canvas = document.createElement('canvas')
-    const ctx = canvas.getContext('2d')
-    canvas.width = img.width
-    canvas.height = img.height
-    ctx!.drawImage(img, 0, 0, img.width, img.height)
-
-    const imageData = ctx!.getImageData(0, 0, canvas.width, canvas.height)
-    tileColorData.value.set(tile.id, getDominantColor(imageData))
-    tileEdgeData.value.set(tile.id, getEdgeComplexity(imageData))
-  }
-  img.src = `${config.server_endpoint}/textures/tiles/${tile.id}.png`
-}
-
-function getDominantColor(imageData: ImageData) {
-  let r = 0,
-    g = 0,
-    b = 0,
-    total = 0
-
-  for (let i = 0; i < imageData.data.length; i += 4) {
-    if (imageData.data[i + 3] > 0) {
-      // Only consider non-transparent pixels
-      r += imageData.data[i]
-      g += imageData.data[i + 1]
-      b += imageData.data[i + 2]
-      total++
-    }
-  }
-
-  return {
-    r: Math.round(r / total),
-    g: Math.round(g / total),
-    b: Math.round(b / total)
-  }
-}
-
-function getEdgeComplexity(imageData: ImageData) {
-  let edgePixels = 0
-  for (let y = 0; y < imageData.height; y++) {
-    for (let x = 0; x < imageData.width; x++) {
-      const i = (y * imageData.width + x) * 4
-      if (imageData.data[i + 3] > 0 && (x === 0 || y === 0 || x === imageData.width - 1 || y === imageData.height - 1 || imageData.data[i - 1] === 0 || imageData.data[i + 7] === 0)) {
-        edgePixels++
-      }
-    }
-  }
-  return edgePixels
-}
-
 function getTileCategory(tile: Tile): string {
   return tileCategories.value.get(tile.id) || ''
 }
@@ -239,22 +161,19 @@ function isActiveTile(tile: Tile): boolean {
   return mapEditor.selectedTile.value === tile.id
 }
 
-let subscription: any = null
+onMounted(async () => {
+  tiles.value = await tileStorage.getAll()
+  const initialBatchSize = 20
+  const initialTiles = tiles.value.slice(0, initialBatchSize)
+  initialTiles.forEach(tile => tileProcessor.processTile(tile))
 
-onMounted(() => {
-  subscription = liveQuery(() => tileStorage.liveQuery()).subscribe({
-    next: (result) => {
-      tiles.value = result
-    },
-    error: (error) => {
-      console.error('Failed to fetch tiles:', error)
-    }
-  })
+  // Process remaining tiles in background
+  setTimeout(() => {
+    tiles.value.slice(initialBatchSize).forEach(tile => tileProcessor.processTile(tile))
+  }, 1000)
 })
 
 onUnmounted(() => {
-  if (subscription) {
-    subscription.unsubscribe()
-  }
+  tileProcessor.cleanup()
 })
 </script>

src/composables/useTileProcessingComposable.ts

@@ -0,0 +1,107 @@
+import { ref } from 'vue'
+import config from '@/application/config'
+import type { Tile } from '@/application/types'
+import type { TileAnalysisResult, TileWorkerMessage } from '@/types/tileTypes'
+
+// Constants for image processing
+const DOWNSCALE_WIDTH = 32
+const DOWNSCALE_HEIGHT = 16
+const COLOR_SIMILARITY_THRESHOLD = 30
+const EDGE_SIMILARITY_THRESHOLD = 20
+const BATCH_SIZE = 4
+
+export function useTileProcessingComposable() {
+  const tileAnalysisCache = ref<Map<string, { color: { r: number; g: number; b: number }; edge: number; namePrefix: string }>>(new Map())
+  const processingQueue = ref<Tile[]>([])
+  let isProcessing = false
+  const worker = new Worker(new URL('@/workers/tileAnalyzerWorker.ts', import.meta.url), { type: 'module' })
+
+  worker.onmessage = (e: MessageEvent<TileAnalysisResult>) => {
+    const { tileId, color, edge, namePrefix } = e.data
+    tileAnalysisCache.value.set(tileId, { color, edge, namePrefix })
+    isProcessing = false
+    processBatch()
+  }
+
+  async function processTileAsync(tile: Tile): Promise<void> {
+    if (tileAnalysisCache.value.has(tile.id)) return
+
+    return new Promise((resolve) => {
+      const img = new Image()
+      img.crossOrigin = 'Anonymous'
+      img.onload = () => {
+        const canvas = document.createElement('canvas')
+        const ctx = canvas.getContext('2d')
+        if (!ctx) {
+          resolve()
+          return
+        }
+
+        canvas.width = DOWNSCALE_WIDTH
+        canvas.height = DOWNSCALE_HEIGHT
+        ctx.drawImage(img, 0, 0, DOWNSCALE_WIDTH, DOWNSCALE_HEIGHT)
+
+        const imageData = ctx.getImageData(0, 0, DOWNSCALE_WIDTH, DOWNSCALE_HEIGHT)
+        const message: TileWorkerMessage = {
+          imageData,
+          tileId: tile.id,
+          tileName: tile.name
+        }
+        worker.postMessage(message)
+        resolve()
+      }
+      img.onerror = () => resolve()
+      img.src = `${config.server_endpoint}/textures/tiles/${tile.id}.png`
+    })
+  }
+
+  function processBatch() {
+    if (isProcessing || processingQueue.value.length === 0) return
+    isProcessing = true
+
+    const batch = processingQueue.value.splice(0, BATCH_SIZE)
+    Promise.all(batch.map(tile => processTileAsync(tile)))
+      .then(() => {
+        isProcessing = false
+        if (processingQueue.value.length > 0) {
+          setTimeout(processBatch, 0)
+        }
+      })
+  }
+
+  function processTile(tile: Tile) {
+    if (!processingQueue.value.includes(tile)) {
+      processingQueue.value.push(tile)
+      processBatch()
+    }
+  }
+
+  function areTilesRelated(tile1: Tile, tile2: Tile): boolean {
+    const data1 = tileAnalysisCache.value.get(tile1.id)
+    const data2 = tileAnalysisCache.value.get(tile2.id)
+
+    if (!data1 || !data2) return false
+
+    const colorDifference = Math.sqrt(
+      Math.pow(data1.color.r - data2.color.r, 2) +
+      Math.pow(data1.color.g - data2.color.g, 2) +
+      Math.pow(data1.color.b - data2.color.b, 2)
+    )
+
+    return (
+      colorDifference <= COLOR_SIMILARITY_THRESHOLD &&
+      Math.abs(data1.edge - data2.edge) <= EDGE_SIMILARITY_THRESHOLD &&
+      data1.namePrefix === data2.namePrefix
+    )
+  }
+
+  function cleanup() {
+    worker.terminate()
+  }
+
+  return {
+    processTile,
+    areTilesRelated,
+    cleanup
+  }
+}

src/types/tileTypes.ts

@@ -0,0 +1,20 @@
+export interface TileAnalysisResult {
+  tileId: string
+  color: {
+    r: number
+    g: number
+    b: number
+  }
+  edge: number
+  namePrefix: string
+}
+
+export interface TileWorkerMessage {
+  imageData: ImageData
+  tileId: string
+  tileName: string
+}
+
+export interface TileCache {
+  [key: string]: TileAnalysisResult
+}

src/workers/tileAnalyzerWorker.ts

@@ -0,0 +1,64 @@
+import type { TileAnalysisResult } from '@/types/tileTypes'
+
+const PIXEL_SAMPLE_RATE = 4
+
+self.onmessage = async (e: MessageEvent) => {
+  const { imageData, tileId, tileName } = e.data
+  const result = analyzeTile(imageData, tileId, tileName)
+  self.postMessage(result)
+}
+
+function analyzeTile(imageData: ImageData, tileId: string, tileName: string): TileAnalysisResult {
+  const { r, g, b } = getDominantColorFast(imageData)
+  const edge = getEdgeComplexityFast(imageData)
+  const namePrefix = tileName.split('_')[0]
+
+  return {
+    tileId,
+    color: { r, g, b },
+    edge,
+    namePrefix
+  }
+}
+
+function getDominantColorFast(imageData: ImageData) {
+  const data = new Uint8ClampedArray(imageData.data.buffer)
+  let r = 0, g = 0, b = 0, total = 0
+  const length = data.length
+
+  for (let i = 0; i < length; i += 4 * PIXEL_SAMPLE_RATE) {
+    if (data[i + 3] > 0) {
+      r += data[i]
+      g += data[i + 1]
+      b += data[i + 2]
+      total++
+    }
+  }
+
+  return total > 0 ? {
+    r: Math.round(r / total),
+    g: Math.round(g / total),
+    b: Math.round(b / total)
+  } : { r: 0, g: 0, b: 0 }
+}
+
+function getEdgeComplexityFast(imageData: ImageData) {
+  const data = new Uint8ClampedArray(imageData.data.buffer)
+  const width = imageData.width
+  const height = imageData.height
+  let edgePixels = 0
+
+  for (let y = 0; y < height; y += PIXEL_SAMPLE_RATE) {
+    for (let x = 0; x < width; x += PIXEL_SAMPLE_RATE) {
+      const i = (y * width + x) * 4
+      if (data[i + 3] > 0 && (
+        x === 0 || y === 0 || x >= width - PIXEL_SAMPLE_RATE || y >= height - PIXEL_SAMPLE_RATE ||
+        data[i - 4 * PIXEL_SAMPLE_RATE + 3] === 0 || data[i + 4 * PIXEL_SAMPLE_RATE + 3] === 0 ||
+        data[i - width * 4 * PIXEL_SAMPLE_RATE + 3] === 0 || data[i + width * 4 * PIXEL_SAMPLE_RATE + 3] === 0
+      )) {
+        edgePixels++
+      }
+    }
+  }
+  return edgePixels * PIXEL_SAMPLE_RATE
+}