wowlikon revised this gist 3 weeks ago. Go to revision
1 file changed, 4 insertions, 2 deletions
book_anim.html
| @@ -13,6 +13,9 @@ | |||
| 13 | 13 | min-height: 100vh; | |
| 14 | 14 | background: #fff; | |
| 15 | 15 | } | |
| 16 | + | svg { | |
| 17 | + | border-radius: 25px; | |
| 18 | + | } | |
| 16 | 19 | </style> | |
| 17 | 20 | </head> | |
| 18 | 21 | <body> | |
| @@ -25,10 +28,9 @@ | |||
| 25 | 28 | const svgWidth = 400; | |
| 26 | 29 | const svgHeight = 400; | |
| 27 | 30 | ||
| 28 | - | // === НАСТРОЙКИ === | |
| 31 | + | // Страницы | |
| 29 | 32 | const lineCount = 5; | |
| 30 | 33 | const lineDelay = 16; | |
| 31 | - | // ================= | |
| 32 | 34 | ||
| 33 | 35 | // Книга по центру | |
| 34 | 36 | const bookWidth = 240; | |
wowlikon revised this gist 3 weeks ago. Go to revision
No changes
wowlikon revised this gist 3 weeks ago. Go to revision
No changes
wowlikon revised this gist 3 weeks ago. Go to revision
1 file changed, 216 insertions
book_anim.html(file created)
| @@ -0,0 +1,216 @@ | |||
| 1 | + | <!DOCTYPE html> | |
| 2 | + | <html lang="ru"> | |
| 3 | + | <head> | |
| 4 | + | <meta charset="UTF-8"> | |
| 5 | + | <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| 6 | + | <title>Книга - SVG Анимация</title> | |
| 7 | + | <style> | |
| 8 | + | body { | |
| 9 | + | margin: 0; | |
| 10 | + | display: flex; | |
| 11 | + | justify-content: center; | |
| 12 | + | align-items: center; | |
| 13 | + | min-height: 100vh; | |
| 14 | + | background: #fff; | |
| 15 | + | } | |
| 16 | + | </style> | |
| 17 | + | </head> | |
| 18 | + | <body> | |
| 19 | + | <svg id="bookSvg" width="400" height="400" viewBox="0 0 400 400"></svg> | |
| 20 | + | ||
| 21 | + | <script> | |
| 22 | + | const svg = document.getElementById('bookSvg'); | |
| 23 | + | const NS = 'http://www.w3.org/2000/svg'; | |
| 24 | + | ||
| 25 | + | const svgWidth = 400; | |
| 26 | + | const svgHeight = 400; | |
| 27 | + | ||
| 28 | + | // === НАСТРОЙКИ === | |
| 29 | + | const lineCount = 5; | |
| 30 | + | const lineDelay = 16; | |
| 31 | + | // ================= | |
| 32 | + | ||
| 33 | + | // Книга по центру | |
| 34 | + | const bookWidth = 240; | |
| 35 | + | const bookHeight = 360; | |
| 36 | + | const bookX = (svgWidth - bookWidth) / 2; | |
| 37 | + | const bookY = (svgHeight - bookHeight) / 2; | |
| 38 | + | ||
| 39 | + | // Параметры полос (страниц) | |
| 40 | + | const desiredLineSpacing = 12; | |
| 41 | + | const baseLineWidth = 2; | |
| 42 | + | const maxLineWidth = 14; | |
| 43 | + | const maxLineHeight = bookHeight - 36; | |
| 44 | + | const innerPaddingX = 14; | |
| 45 | + | ||
| 46 | + | // Задержка между появлением/исчезновением полос | |
| 47 | + | const appearStagger = 8; | |
| 48 | + | ||
| 49 | + | // Вычисляем реальное расстояние между полосами | |
| 50 | + | let lineSpacing; | |
| 51 | + | if (lineCount > 1) { | |
| 52 | + | const maxSpan = Math.max(0, bookWidth - maxLineWidth - 2 * innerPaddingX); | |
| 53 | + | const wishSpan = desiredLineSpacing * (lineCount - 1); | |
| 54 | + | const realSpan = Math.min(wishSpan, maxSpan); | |
| 55 | + | lineSpacing = realSpan / (lineCount - 1); | |
| 56 | + | } else { | |
| 57 | + | lineSpacing = 0; | |
| 58 | + | } | |
| 59 | + | const linesSpan = lineSpacing * (lineCount - 1); | |
| 60 | + | ||
| 61 | + | // Правая группа (стартовая позиция) | |
| 62 | + | const rightBase = bookX + bookWidth - innerPaddingX - maxLineWidth; | |
| 63 | + | const lineStartX = rightBase - linesSpan; | |
| 64 | + | ||
| 65 | + | // Левая группа (финишная позиция) | |
| 66 | + | const leftLimit = bookX + innerPaddingX; | |
| 67 | + | ||
| 68 | + | // Состояние анимации | |
| 69 | + | let phase = 0; | |
| 70 | + | let time = 0; | |
| 71 | + | ||
| 72 | + | // Тайминги (в кадрах) | |
| 73 | + | const baseAppearDuration = 40; | |
| 74 | + | const appearDuration = baseAppearDuration + (lineCount - 1) * appearStagger; | |
| 75 | + | ||
| 76 | + | const baseFlipDuration = 120; | |
| 77 | + | const flipDuration = baseFlipDuration + (lineCount - 1) * lineDelay; | |
| 78 | + | ||
| 79 | + | const baseDisappearDuration = 40; | |
| 80 | + | const disappearDuration = baseDisappearDuration + (lineCount - 1) * appearStagger; | |
| 81 | + | ||
| 82 | + | const pauseDuration = 30; | |
| 83 | + | ||
| 84 | + | // Книга | |
| 85 | + | const book = document.createElementNS(NS, 'rect'); | |
| 86 | + | book.setAttribute('x', bookX); | |
| 87 | + | book.setAttribute('y', bookY); | |
| 88 | + | book.setAttribute('width', bookWidth); | |
| 89 | + | book.setAttribute('height', bookHeight); | |
| 90 | + | book.setAttribute('fill', '#000'); | |
| 91 | + | book.setAttribute('rx', '4'); | |
| 92 | + | svg.appendChild(book); | |
| 93 | + | ||
| 94 | + | // Полосы (страницы) | |
| 95 | + | const lines = []; | |
| 96 | + | for (let i = 0; i < lineCount; i++) { | |
| 97 | + | const line = document.createElementNS(NS, 'rect'); | |
| 98 | + | line.setAttribute('fill', '#fff'); | |
| 99 | + | line.setAttribute('rx', '1'); | |
| 100 | + | svg.appendChild(line); | |
| 101 | + | ||
| 102 | + | const baseX = lineStartX + i * lineSpacing; | |
| 103 | + | const targetX = leftLimit + i * lineSpacing; | |
| 104 | + | const moveDistance = baseX - targetX; | |
| 105 | + | ||
| 106 | + | lines.push({ | |
| 107 | + | el: line, | |
| 108 | + | baseX, | |
| 109 | + | targetX, | |
| 110 | + | moveDistance, | |
| 111 | + | currentX: baseX, | |
| 112 | + | width: baseLineWidth, | |
| 113 | + | height: 0 | |
| 114 | + | }); | |
| 115 | + | } | |
| 116 | + | ||
| 117 | + | // Функции плавности | |
| 118 | + | function easeInOutQuad(t) { | |
| 119 | + | return t < 0.5 ? 2 * t * t : 1 - Math.pow(-2 * t + 2, 2) / 2; | |
| 120 | + | } | |
| 121 | + | function easeOutQuad(t) { | |
| 122 | + | return 1 - (1 - t) * (1 - t); | |
| 123 | + | } | |
| 124 | + | function easeInQuad(t) { | |
| 125 | + | return t * t; | |
| 126 | + | } | |
| 127 | + | ||
| 128 | + | // Обновление одной полосы | |
| 129 | + | function updateLine(line) { | |
| 130 | + | const el = line.el; | |
| 131 | + | const centerY = bookY + bookHeight / 2; | |
| 132 | + | ||
| 133 | + | el.setAttribute('x', line.currentX); | |
| 134 | + | el.setAttribute('y', centerY - line.height / 2); | |
| 135 | + | el.setAttribute('width', line.width); | |
| 136 | + | el.setAttribute('height', Math.max(0, line.height)); | |
| 137 | + | } | |
| 138 | + | ||
| 139 | + | // Главный цикл анимации | |
| 140 | + | function animate() { | |
| 141 | + | time++; | |
| 142 | + | ||
| 143 | + | if (phase === 0) { | |
| 144 | + | // Появление: слева направо (индекс 0 первый, потом 1, 2...) | |
| 145 | + | for (let i = 0; i < lineCount; i++) { | |
| 146 | + | // Задержка увеличивается с индексом → левые появляются раньше | |
| 147 | + | const delay = (lineCount - 1 - i) * appearStagger; | |
| 148 | + | const localTime = Math.max(0, time - delay); | |
| 149 | + | const progress = Math.min(1, localTime / baseAppearDuration); | |
| 150 | + | const easedProgress = easeOutQuad(progress); | |
| 151 | + | ||
| 152 | + | lines[i].height = maxLineHeight * easedProgress; | |
| 153 | + | lines[i].currentX = lines[i].baseX; | |
| 154 | + | lines[i].width = baseLineWidth; | |
| 155 | + | updateLine(lines[i]); | |
| 156 | + | } | |
| 157 | + | ||
| 158 | + | if (time >= appearDuration) { | |
| 159 | + | phase = 1; | |
| 160 | + | time = 0; | |
| 161 | + | } | |
| 162 | + | } else if (phase === 1) { | |
| 163 | + | // Перелистывание | |
| 164 | + | for (let i = 0; i < lineCount; i++) { | |
| 165 | + | const delay = i * lineDelay; | |
| 166 | + | const localTime = Math.max(0, time - delay); | |
| 167 | + | const progress = Math.min(1, localTime / baseFlipDuration); | |
| 168 | + | ||
| 169 | + | const moveProgress = easeInOutQuad(progress); | |
| 170 | + | lines[i].currentX = lines[i].baseX - lines[i].moveDistance * moveProgress; | |
| 171 | + | ||
| 172 | + | const widthProgress = progress < 0.5 | |
| 173 | + | ? easeOutQuad(progress * 2) | |
| 174 | + | : 1 - easeInQuad((progress - 0.5) * 2); | |
| 175 | + | ||
| 176 | + | lines[i].width = baseLineWidth + (maxLineWidth - baseLineWidth) * widthProgress; | |
| 177 | + | ||
| 178 | + | updateLine(lines[i]); | |
| 179 | + | } | |
| 180 | + | ||
| 181 | + | if (time >= flipDuration) { | |
| 182 | + | phase = 2; | |
| 183 | + | time = 0; | |
| 184 | + | } | |
| 185 | + | } else if (phase === 2) { | |
| 186 | + | // Исчезновение: справа налево (последний индекс первый, потом предпоследний...) | |
| 187 | + | for (let i = 0; i < lineCount; i++) { | |
| 188 | + | // Задержка уменьшается с индексом → правые (большие индексы) исчезают раньше | |
| 189 | + | const delay = (lineCount - 1 - i) * appearStagger; | |
| 190 | + | const localTime = Math.max(0, time - delay); | |
| 191 | + | const progress = Math.min(1, localTime / baseDisappearDuration); | |
| 192 | + | const easedProgress = easeInQuad(progress); | |
| 193 | + | ||
| 194 | + | lines[i].height = maxLineHeight * (1 - easedProgress); | |
| 195 | + | updateLine(lines[i]); | |
| 196 | + | } | |
| 197 | + | ||
| 198 | + | if (time >= disappearDuration + pauseDuration) { | |
| 199 | + | // Сброс | |
| 200 | + | phase = 0; | |
| 201 | + | time = 0; | |
| 202 | + | for (let i = 0; i < lineCount; i++) { | |
| 203 | + | lines[i].currentX = lines[i].baseX; | |
| 204 | + | lines[i].width = baseLineWidth; | |
| 205 | + | lines[i].height = 0; | |
| 206 | + | } | |
| 207 | + | } | |
| 208 | + | } | |
| 209 | + | ||
| 210 | + | requestAnimationFrame(animate); | |
| 211 | + | } | |
| 212 | + | ||
| 213 | + | animate(); | |
| 214 | + | </script> | |
| 215 | + | </body> | |
| 216 | + | </html> | |