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| diff --git a/source/js/main.js b/source/js/main.js
index e00d435..96c4e1c 100644
--- a/source/js/main.js
+++ b/source/js/main.js
@@ -62,6 +62,416 @@ document.addEventListener('DOMContentLoaded', function () {
})
}+ /**
+ * 首頁線條動畫
+ */
+ const initHomeLineAnimation = () => {
+ if (!GLOBAL_CONFIG_SITE.isHome) {
+ window.__homeLineAnimator && window.__homeLineAnimator.destroy()
+ window.__homeLineAnimator = null
+ return
+ }
+
+ const canvas = document.getElementById('line-canvas')
+ const header = document.getElementById('page-header')
+ if (!canvas || !header) return
+
+ window.__homeLineAnimator && window.__homeLineAnimator.destroy()
+ const animator = createHomeLineAnimator(canvas, header)
+ if (!animator) return
+ window.__homeLineAnimator = animator
+ let hasPlayed = false
+ let shouldForcePlay = false
+ try {
+ hasPlayed = window.sessionStorage && window.sessionStorage.getItem('homeLinePlayed') === '1'
+ const navEntry = window.performance && window.performance.getEntriesByType
+ ? window.performance.getEntriesByType('navigation')[0]
+ : null
+ const navType = navEntry && navEntry.type ? navEntry.type : ''
+ shouldForcePlay = navType === 'reload' || navType === 'navigate'
+ } catch (error) {
+ hasPlayed = false
+ shouldForcePlay = true
+ }
+
+ if (shouldForcePlay) {
+ animator.initOnce(() => {
+ try {
+ window.sessionStorage && window.sessionStorage.setItem('homeLinePlayed', '1')
+ } catch (error) {
+ // ignore
+ }
+ })
+ } else if (hasPlayed) {
+ animator.renderStatic()
+ } else {
+ animator.initOnce(() => {
+ try {
+ window.sessionStorage && window.sessionStorage.setItem('homeLinePlayed', '1')
+ } catch (error) {
+ // ignore
+ }
+ })
+ }
+ }
+
+ /**
+ * 創建首頁線條動畫控制器
+ */
+ const createHomeLineAnimator = (canvas, header) => {
+ const ctx = canvas.getContext('2d')
+ if (!ctx) return null
+
+ const baseRoot = GLOBAL_CONFIG.root.endsWith('/') ? GLOBAL_CONFIG.root : `${GLOBAL_CONFIG.root}/`
+ const dataUrl = `${baseRoot}line.json`
+ const maxPoints = 8000
+ let resizeObserver = null
+ let rafId = 0
+ let resizeHandler = null
+ let points = []
+ let mappedPoints = []
+ let startTime = 0
+ let lastDrawCount = 0
+ let lastProgress = 0
+ let drawOrder = []
+ let canvasWidth = 0
+ let canvasHeight = 0
+ let destroyed = false
+ let completed = false
+ let mode = 'once'
+ const getDuration = () => {
+ const config = GLOBAL_CONFIG && GLOBAL_CONFIG.lineAnimation ? GLOBAL_CONFIG.lineAnimation : {}
+ const modeValue = config.mode || 'sequence'
+ const durationValue = modeValue === 'random'
+ ? Number(config.random_duration || config.duration || 3000)
+ : Number(config.duration || 3000)
+ return Number.isFinite(durationValue) && durationValue > 0 ? durationValue : 3000
+ }
+
+ /**
+ * 取得點集位置配置
+ */
+ const getPositionConfig = () => {
+ const config = GLOBAL_CONFIG && GLOBAL_CONFIG.lineAnimation ? GLOBAL_CONFIG.lineAnimation : {}
+ const modeValue = config.position_mode || 'center'
+ const ratio = config.offset_ratio || {}
+ const ratioX = Number(ratio.x)
+ const ratioY = Number(ratio.y)
+ const scaleValue = Number(config.scale)
+ return {
+ mode: modeValue,
+ offsetXRatio: normalizeRatio(ratioX),
+ offsetYRatio: normalizeRatio(ratioY),
+ scale: normalizeScale(scaleValue)
+ }
+ }
+
+ /**
+ * 正規化偏移占比
+ */
+ const normalizeRatio = value => {
+ if (!Number.isFinite(value)) return 0
+ return Math.max(-1, Math.min(1, value))
+ }
+
+ const normalizeScale = value => {
+ if (!Number.isFinite(value)) return 1
+ return Math.max(0.1, Math.min(2, value))
+ }
+
+ /**
+ * 取得位置錨點
+ */
+ const getPositionAnchor = modeValue => {
+ switch (modeValue) {
+ case 'left_top':
+ return { anchorX: 0, anchorY: 0 }
+ case 'left_bottom':
+ return { anchorX: 0, anchorY: 1 }
+ case 'right_top':
+ return { anchorX: 1, anchorY: 0 }
+ case 'right_bottom':
+ return { anchorX: 1, anchorY: 1 }
+ case 'middle_left':
+ return { anchorX: 0, anchorY: 0.5 }
+ case 'middle_right':
+ return { anchorX: 1, anchorY: 0.5 }
+ default:
+ return { anchorX: 0.5, anchorY: 0.5 }
+ }
+ }
+ const pointRadius = 0.5
+ const pointSprite = createPointSprite(pointRadius)
+ const spriteHalfSize = pointSprite ? pointSprite.width / 2 : 0
+
+ /**
+ * 建立點的離屏貼圖
+ */
+ function createPointSprite (radius) {
+ const size = Math.max(4, Math.ceil(radius * 6))
+ const sprite = document.createElement('canvas')
+ sprite.width = size
+ sprite.height = size
+ const spriteCtx = sprite.getContext('2d')
+ if (!spriteCtx) return null
+
+ const center = size / 2
+ const glowRadius = radius * 3
+ const gradient = spriteCtx.createRadialGradient(center, center, 0, center, center, glowRadius)
+ gradient.addColorStop(0, 'rgba(255, 255, 255, 0.95)')
+ gradient.addColorStop(0.45, 'rgba(255, 255, 255, 0.7)')
+ gradient.addColorStop(1, 'rgba(255, 255, 255, 0)')
+ spriteCtx.fillStyle = gradient
+ spriteCtx.beginPath()
+ spriteCtx.arc(center, center, glowRadius, 0, Math.PI * 2)
+ spriteCtx.fill()
+ return sprite
+ }
+
+ /**
+ * 下採樣點集
+ */
+ const downsample = list => {
+ if (!list || list.length <= maxPoints) return list || []
+ const step = Math.ceil(list.length / maxPoints)
+ return list.filter((_, index) => index % step === 0)
+ }
+
+ /**
+ * 計算點集邊界
+ */
+ const getBounds = list => {
+ let minX = Infinity
+ let minY = Infinity
+ let maxX = -Infinity
+ let maxY = -Infinity
+
+ list.forEach(item => {
+ minX = Math.min(minX, item.x)
+ minY = Math.min(minY, item.y)
+ maxX = Math.max(maxX, item.x)
+ maxY = Math.max(maxY, item.y)
+ })
+
+ return { minX, minY, maxX, maxY }
+ }
+
+ /**
+ * 映射點集到畫布坐標
+ */
+ const mapPoints = (list, width, height) => {
+ if (!list.length || width === 0 || height === 0) {
+ return []
+ }
+
+ const padding = Math.max(20, Math.min(width, height) * 0.06)
+ const { minX, minY, maxX, maxY } = getBounds(list)
+ const rangeX = Math.max(1, maxX - minX)
+ const rangeY = Math.max(1, maxY - minY)
+ const fitScale = Math.min((width - padding * 2) / rangeX, (height - padding * 2) / rangeY)
+ const { mode, offsetXRatio, offsetYRatio, scale } = getPositionConfig()
+ const appliedScale = fitScale * scale
+ const { anchorX, anchorY } = getPositionAnchor(mode)
+ const availableX = Math.max(0, width - rangeX * appliedScale)
+ const availableY = Math.max(0, height - rangeY * appliedScale)
+ const offsetX = availableX * anchorX - minX * appliedScale + availableX * offsetXRatio
+ const offsetY = availableY * anchorY - minY * appliedScale + availableY * offsetYRatio
+
+ const mapped = list.map(point => ({
+ x: point.x * appliedScale + offsetX,
+ y: point.y * appliedScale + offsetY
+ }))
+
+ return mapped
+ }
+
+ /**
+ * 重置畫布尺寸並重新映射點集
+ */
+ const resizeCanvas = () => {
+ canvasWidth = header.clientWidth
+ canvasHeight = header.clientHeight
+ if (!canvasWidth || !canvasHeight) return
+
+ const dpr = window.devicePixelRatio || 1
+ canvas.width = Math.round(canvasWidth * dpr)
+ canvas.height = Math.round(canvasHeight * dpr)
+ canvas.style.width = `${canvasWidth}px`
+ canvas.style.height = `${canvasHeight}px`
+ ctx.setTransform(dpr, 0, 0, dpr, 0, 0)
+
+ mappedPoints = mapPoints(points, canvasWidth, canvasHeight)
+ const modeValue = GLOBAL_CONFIG && GLOBAL_CONFIG.lineAnimation ? GLOBAL_CONFIG.lineAnimation.mode : 'sequence'
+ if (modeValue === 'random') {
+ drawOrder = buildRandomOrder(mappedPoints.length)
+ } else {
+ drawOrder = Array.from({ length: mappedPoints.length }, (_, index) => index)
+ }
+ startTime = 0
+ lastDrawCount = 0
+ lastProgress = 0
+ ctx.clearRect(0, 0, canvasWidth, canvasHeight)
+ if (mode === 'static' || completed) {
+ renderFull()
+ }
+ }
+
+ /**
+ * 繪製指定區間點集
+ */
+ /**
+ * 產生隨機順序索引
+ */
+ const buildRandomOrder = count => {
+ const order = Array.from({ length: count }, (_, index) => index)
+ for (let i = count - 1; i > 0; i--) {
+ const j = Math.floor(Math.random() * (i + 1))
+ const temp = order[i]
+ order[i] = order[j]
+ order[j] = temp
+ }
+ return order
+ }
+
+ /**
+ * 繪製指定區間點集
+ */
+ const getPointByOrder = index => {
+ const orderIndex = drawOrder[index]
+ return mappedPoints[orderIndex]
+ }
+
+ const drawPointsRange = (fromIndex, toIndex) => {
+ if (fromIndex >= toIndex) return
+ if (pointSprite) {
+ for (let i = fromIndex; i < toIndex; i++) {
+ const point = getPointByOrder(i)
+ ctx.drawImage(pointSprite, point.x - spriteHalfSize, point.y - spriteHalfSize)
+ }
+ } else {
+ ctx.fillStyle = 'rgba(255, 255, 255, 0.85)'
+ ctx.beginPath()
+ for (let i = fromIndex; i < toIndex; i++) {
+ const point = getPointByOrder(i)
+ ctx.moveTo(point.x + pointRadius, point.y)
+ ctx.arc(point.x, point.y, pointRadius, 0, Math.PI * 2)
+ }
+ ctx.fill()
+ }
+ }
+
+ /**
+ * 靜態渲染全部點集
+ */
+ const renderFull = () => {
+ if (!mappedPoints.length) return
+ if (!drawOrder.length || drawOrder.length !== mappedPoints.length) {
+ drawOrder = Array.from({ length: mappedPoints.length }, (_, index) => index)
+ }
+ ctx.clearRect(0, 0, canvasWidth, canvasHeight)
+ drawPointsRange(0, mappedPoints.length)
+ lastDrawCount = mappedPoints.length
+ lastProgress = 1
+ }
+
+ /**
+ * 繪製當前動畫幀
+ */
+ const drawOnce = (time, onComplete) => {
+ if (destroyed) return
+ if (!mappedPoints.length) {
+ rafId = requestAnimationFrame(nextTime => drawOnce(nextTime, onComplete))
+ return
+ }
+
+ if (!startTime) startTime = time
+ const elapsed = time - startTime
+ const duration = getDuration()
+ const progress = Math.min(1, elapsed / duration)
+ const visibleCount = Math.max(1, Math.floor(progress * mappedPoints.length))
+ drawPointsRange(lastDrawCount, visibleCount)
+
+ lastDrawCount = visibleCount
+ lastProgress = progress
+ if (progress < 1) {
+ rafId = requestAnimationFrame(nextTime => drawOnce(nextTime, onComplete))
+ } else {
+ completed = true
+ if (typeof onComplete === 'function') onComplete()
+ }
+ }
+
+ /**
+ * 加載點集數據
+ */
+ const loadData = async () => {
+ if (window.__homeLineData) return window.__homeLineData
+ const response = await fetch(dataUrl)
+ const data = await response.json()
+ window.__homeLineData = data
+ return data
+ }
+
+ /**
+ * 初始化動畫（只播放一次）
+ */
+ const initOnce = async onComplete => {
+ try {
+ const data = await loadData()
+ points = downsample(data)
+ completed = false
+ mode = 'once'
+ resizeCanvas()
+ if (window.ResizeObserver) {
+ resizeObserver = new ResizeObserver(resizeCanvas)
+ resizeObserver.observe(header)
+ } else {
+ resizeHandler = () => resizeCanvas()
+ window.addEventListener('resize', resizeHandler)
+ }
+ rafId = requestAnimationFrame(nextTime => drawOnce(nextTime, onComplete))
+ } catch (error) {
+ destroy()
+ }
+ }
+
+ /**
+ * 靜態渲染
+ */
+ const renderStatic = async () => {
+ try {
+ const data = await loadData()
+ points = downsample(data)
+ completed = true
+ mode = 'static'
+ resizeCanvas()
+ if (window.ResizeObserver) {
+ resizeObserver = new ResizeObserver(resizeCanvas)
+ resizeObserver.observe(header)
+ } else {
+ resizeHandler = () => resizeCanvas()
+ window.addEventListener('resize', resizeHandler)
+ }
+ renderFull()
+ } catch (error) {
+ destroy()
+ }
+ }
+
+ /**
+ * 銷毀動畫並清理資源
+ */
+ const destroy = () => {
+ destroyed = true
+ if (rafId) cancelAnimationFrame(rafId)
+ if (resizeObserver) resizeObserver.disconnect()
+ if (resizeHandler) window.removeEventListener('resize', resizeHandler)
+ ctx.clearRect(0, 0, canvasWidth, canvasHeight)
+ }
+
+ return { initOnce, renderStatic, destroy }
+ }
+
/**
* 代碼
* 只適用於Hexo默認的代碼渲染
*/
@@ -806,6 +1216,7 @@ document.addEventListener('DOMContentLoaded', function () { scrollFnToDo()
GLOBAL_CONFIG_SITE.isHome && scrollDownInIndex()
+ initHomeLineAnimation()
addHighlightTool()
GLOBAL_CONFIG.isPhotoFigcaption && addPhotoFigcaption()
scrollFn()
|
