javascript - 如何为我的 SVG 路径设置动画

我有一个 SVG 我想用animejs制作动画。

基本上它是一个选择路径图。

我设法制作了动画，但结果是错误的。

我要这个:

var lineDrawing = anime({
  targets: 'path',
  strokeDashoffset: [anime.setDashoffset, 0],
  easing: 'easeInOutCubic',
  duration: 4000,
  begin: function(anim) {
    document.querySelector('path').setAttribute("stroke", "#4a56f2");
    document.querySelector('path').setAttribute("fill", "none");
  },
  complete: function(anim) {
  },
  autoplay: false
});

document.querySelector('.play-drawing').onclick = lineDrawing.restart;

body {
  margin: 20px;
  font-family: 'Lato';
  font-weight: 300;
  font-size: 1.2em;
}

#anime-demo {
  position: relative;
}

svg {
   padding: 10px;
}

button {
  background: orange;
  color: white;
  margin: 5px;
  padding: 10px;
  border-radius: 4px;
  font-family: 'Lato';
  cursor: pointer;
  border: none;
  outline: none;
}

button:hover {
  background: blue;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/animejs/2.0.2/anime.min.js"></script>
<div class="controls">
<button class="play-drawing">Draw the Anchor</button>
</div>

<div id="anime-demo">
<svg width="400" height="631" ></path><path id="path1" d="M182.961 0.223 L 181.958 0.347 181.958 4.954 L 181.958 9.561 186.584 9.561 L 191.210 9.561 191.210 4.780 L 191.210 0.000 187.587 0.049 C 185.594 0.077,183.512 0.155,182.961 0.223 M199.708 4.460 C 199.433 10.013,199.025 9.561,204.303 9.561 C 209.559 9.561,209.098 10.067,209.098 4.292 L 209.098 0.000 204.513 0.000 L 199.929 0.000 199.708 4.460 M217.625 1.928 C 217.518 2.818,217.429 4.882,217.428 6.515 L 217.425 9.483 218.389 9.676 C 218.919 9.782,220.980 9.869,222.969 9.869 L 226.586 9.869 226.786 7.509 C 226.896 6.212,226.985 4.151,226.985 2.930 L 226.985 0.710 223.978 0.511 C 222.325 0.401,220.262 0.311,219.395 0.310 L 217.819 0.308 217.625 1.928 M166.230 0.904 C 164.958 1.000,163.922 1.218,163.928 1.388 C 164.037 4.308,164.492 9.860,164.643 10.101 C 164.823 10.390,173.262 10.014,173.587 9.703 C 173.648 9.645,173.596 7.577,173.473 5.107 L 173.248 0.617 170.896 0.672 C 169.602 0.703,167.502 0.807,166.230 0.904 M235.518 1.621 C 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173.586,22.585 173.679,22.419 174.758 M330.186 189.845 C 329.189 192.138,328.426 194.048,328.489 194.092 C 329.008 194.446,336.824 197.743,336.919 197.647 C 337.180 197.387,340.478 189.853,340.478 189.519 C 340.478 189.203,332.878 185.646,332.253 185.668 C 332.112 185.673,331.182 187.553,330.186 189.845 M20.971 196.145 L 20.971 200.771 22.775 200.771 C 23.766 200.771,25.848 200.681,27.401 200.571 L 30.224 200.370 30.224 196.132 C 30.224 191.093,30.695 191.519,25.110 191.519 L 20.971 191.519 20.971 196.145 M323.251 205.942 C 320.888 211.958,320.619 211.164,325.605 212.876 C 330.300 214.487,330.301 214.487,330.301 214.000 C 330.301 213.813,331.009 211.861,331.875 209.663 C 332.740 207.465,333.400 205.630,333.340 205.586 C 333.280 205.541,331.843 204.934,330.146 204.237 C 328.450 203.540,326.552 202.755,325.928 202.493 L 324.794 202.015 323.251 205.942 M25.289 208.958 C 23.508 209.173,21.941 209.361,21.806 209.377 C 21.671 209.393,21.630 209.857,21.716 210.409 C 21.801 210.960,22.105 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51.968 283.696 55.513 281.382 C 57.464 280.109,59.235 278.965,59.449 278.840 C 59.732 278.676,59.366 277.896,58.120 276.007 C 57.174 274.573,56.105 272.880,55.745 272.244 C 54.929 270.802,55.356 270.708,51.190 273.241 M347.189 273.333 C 345.198 274.557,343.567 275.703,343.565 275.878 C 343.562 276.172,347.656 282.953,348.177 283.517 C 348.303 283.653,350.032 282.724,352.020 281.453 C 354.007 280.182,355.789 279.091,355.979 279.027 C 356.377 278.895,351.588 271.083,351.118 271.097 C 350.948 271.103,349.180 272.109,347.189 273.333 M60.722 288.058 C 56.412 291.096,56.531 290.449,59.529 294.592 C 62.527 298.736,61.954 298.649,66.215 295.605 C 70.347 292.655,70.235 293.421,67.155 289.139 C 64.123 284.925,64.966 285.067,60.722 288.058 M357.132 288.403 C 355.351 289.587,353.692 290.672,353.445 290.815 C 353.018 291.062,357.765 298.843,358.342 298.843 C 358.511 298.843,365.680 294.082,366.051 293.724 C 366.122 293.655,365.895 293.286,365.547 292.905 C 365.198 292.525,364.051 290.860,362.997 289.206 C 360.733 285.653,361.178 285.714,357.132 288.403 M71.306 302.968 C 69.234 304.206,67.467 305.290,67.380 305.377 C 67.293 305.464,67.916 306.979,68.765 308.743 C 69.613 310.507,70.394 312.402,70.500 312.953 C 70.606 313.504,70.782 313.954,70.890 313.953 C 71.263 313.948,79.607 311.552,79.750 311.409 C 80.107 311.052,76.694 303.086,75.330 301.091 C 75.145 300.821,74.027 301.343,71.306 302.968 M367.030 303.482 C 365.095 304.828,363.447 305.995,363.368 306.075 C 363.262 306.180,366.912 311.862,367.813 312.995 C 367.865 313.061,369.588 312.193,371.642 311.068 C 373.695 309.942,375.504 309.021,375.660 309.021 C 376.405 309.021,371.736 301.366,370.839 301.115 C 370.679 301.071,368.965 302.135,367.030 303.482 M374.711 318.202 C 372.591 318.974,370.827 319.623,370.793 319.645 C 370.719 319.691,373.233 327.614,373.384 327.811 C 373.503 327.968,381.866 325.669,382.161 325.398 C 382.593 325.003,379.653 316.729,379.094 316.765 C 378.804 316.784,376.831 317.431,374.711 318.202 M71.855 325.906 C 71.853 327.899,71.769 330.028,71.668 330.637 L 71.485 331.745 75.295 332.119 C 77.391 332.325,79.470 332.563,79.915 332.647 C 80.998 332.852,81.030 332.725,81.287 327.093 L 81.508 322.282 76.683 322.282 L 71.858 322.282 71.855 325.906 M379.847 334.785 C 374.729 336.011,375.250 335.499,375.935 338.635 C 376.250 340.073,376.663 342.024,376.854 342.971 L 377.201 344.694 381.702 343.830 C 384.178 343.354,386.246 342.924,386.296 342.874 C 386.459 342.710,384.493 333.692,384.302 333.727 C 384.200 333.746,382.196 334.222,379.847 334.785 M70.172 340.833 C 69.681 342.912,68.475 349.226,68.554 349.305 C 68.740 349.490,77.447 351.337,77.568 351.216 C 77.714 351.070,79.583 341.924,79.482 341.847 C 79.445 341.819,77.679 341.490,75.559 341.117 C 73.439 340.744,71.398 340.365,71.023 340.274 C 70.495 340.146,70.305 340.271,70.172 340.833 M383.192 352.103 C 380.817 352.528,378.838 352.909,378.793 352.952 C 378.708 353.031,379.916 361.034,380.103 361.637 C 380.201 361.953,389.013 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</div>

最佳答案

更新答案: 对于 OP 试图实现的目标。仍然是纯css。

解释:

查看“上一个答案”，了解如何使其像在 gif 中一样工作。

现在如何使每条虚线都像正方形。在蓝线中，我们每个破折号的 length 是 10 。我们可以使 stroke-width = 10 看起来像正方形。现在每个方块应该只有 outline 而没有 fill 。我们将创建另一个 mask 来阻挡每个正方形的内部。

path {
  fill: none
}

.path {
  stroke-dasharray: 10;
  stroke: blue;
  stroke-width: 10;
}


/* Let the outline width of each square be 1 */

.maskSquare {
  stroke: black;
  /* To block or remove inner blue portion */
  stroke-width: 8;
  /* blue-dash-length minus 2*sqaure-length = 10 - 2 */
  stroke-dasharray: 8 12;
  /* 8+12 == 20 as in blue-dash-line 10+10 == 20 */
  stroke-dashoffset: -1;
  /* To sync */
}

.maskLineLength {
  stroke: white;
  stroke-width: 11;
  animation: array 3s linear infinite;
}

@keyframes array {
  from {
    stroke-dasharray: 0 2000;
  }
  to {
    stroke-dasharray: 1000 2000;
  }
}

<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="340px" height="333px" viewBox="0 0 340 333" enable-background="new 0 0 340 333" xml:space="preserve">
  <defs>
     <mask id="mask">
           <path  class='maskLineLength' d="M66.039,133.545c0,0-21-57,18-67s49-4,65,8
          s30,41,53,27s66,4,58,32s-5,44,18,57s22,46,0,45s-54-40-68-16s-40,88-83,48s11-61-11-80s-79-7-70-41
          C46.039,146.545,53.039,128.545,66.039,133.545z"/>
       <path  class='maskSquare' d="M66.039,133.545c0,0-21-57,18-67s49-4,65,8
          s30,41,53,27s66,4,58,32s-5,44,18,57s22,46,0,45s-54-40-68-16s-40,88-83,48s11-61-11-80s-79-7-70-41
          C46.039,146.545,53.039,128.545,66.039,133.545z"/>
        </mask>
  </defs>
  <path mask="url(#mask)" class="path" d="M66.039,133.545c0,0-21-57,18-67s49-4,65,8
    s30,41,53,27s66,4,58,32s-5,44,18,57s22,46,0,45s-54-40-68-16s-40,88-83,48s11-61-11-80s-79-7-70-41
    C46.039,146.545,53.039,128.545,66.039,133.545z"/>
</svg>

上一个答案: 对于您提供的 gif

它可以在纯 css 中完成。

首先，蓝色破折号路径。

.path {
  stroke-dasharray: 10;
  stroke: blue;
}

<svg width="340px" height="333px">
  <path class="path" fill="none" stroke-width="3" stroke-miterlimit="10" d="M66.039,133.545c0,0-21-57,18-67s49-4,65,8
    s30,41,53,27s66,4,58,32s-5,44,18,57s22,46,0,45s-54-40-68-16s-40,88-83,48s11-61-11-80s-79-7-70-41
    C46.039,146.545,53.039,128.545,66.039,133.545z"/>
</svg>

接下来是 mask 路径，使用相同的路径 1px 更大的笔触宽度。

.maskPath {
  animation: array 3s linear infinite;
}

@keyframes array {
  from {
    stroke-dasharray: 0 2000;
  }
  to {
    stroke-dasharray: 1000 2000;
  }
}

<svg width="340px" height="333px">

           <path fill='none' class='maskPath' stroke="darkGray" stroke-width='4' d="M66.039,133.545c0,0-21-57,18-67s49-4,65,8
          s30,41,53,27s66,4,58,32s-5,44,18,57s22,46,0,45s-54-40-68-16s-40,88-83,48s11-61-11-80s-79-7-70-41
          C46.039,146.545,53.039,128.545,66.039,133.545z"/>

</svg>

在蓝色虚线上应用蒙版时，结果如下。

.path {
  stroke-dasharray: 10;
  stroke: blue;
}

.maskPath {
  animation: array 3s linear infinite;
}

@keyframes array {
  from {
    stroke-dasharray: 0 2000;
  }
  to {
    stroke-dasharray: 1000 2000;
  }
}

<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="340px" height="333px" viewBox="0 0 340 333" enable-background="new 0 0 340 333" xml:space="preserve">
  <defs>
     <mask id="mask">
           <path fill='none' class='maskPath' stroke="white" stroke-width='4' d="M66.039,133.545c0,0-21-57,18-67s49-4,65,8
          s30,41,53,27s66,4,58,32s-5,44,18,57s22,46,0,45s-54-40-68-16s-40,88-83,48s11-61-11-80s-79-7-70-41
          C46.039,146.545,53.039,128.545,66.039,133.545z"/>
        </mask>
  </defs>
  <path mask="url(#mask)" class="path" fill="none" stroke="#000000" stroke-width="3" d="M66.039,133.545c0,0-21-57,18-67s49-4,65,8
    s30,41,53,27s66,4,58,32s-5,44,18,57s22,46,0,45s-54-40-68-16s-40,88-83,48s11-61-11-80s-79-7-70-41
    C46.039,146.545,53.039,128.545,66.039,133.545z"/>
</svg>

(我可能无法提供更多帮助，因为我是 svg 的初学者)

关于javascript - 如何为我的 SVG 路径设置动画，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/49331049/