html - 如何控制 CSS3 动画的时间

Question

我正在制作 SVG 线条绘制动画，如下所示。

所以我在做什么是通过使用动画耳朵stroke-dasharray并继续使用点来为耳朵设置动画。

我设法完成了耳朵的绘制，但我不知道如何控制点的时间。以下是我的动画步骤：

1. 5s内画耳朵动画
2. 5s 后，继续点动画（逐行动画）
3. 完成点动画后，循环回到第一步

这是我的代码，但它逐渐闪烁。如何调整时间？

.firstpath {
  stroke-dasharray: 1500;
  animation: firstanimate 5s linear forwards infinite;
}
@keyframes firstanimate {
  from {
    stroke-dashoffset: 1500;
  }
  to {
    stroke-dashoffset: 0;
  }
}
.secondpath {
  stroke-dasharray: 500;
  animation: secondanimate 5s linear forwards infinite;
}
@keyframes secondanimate {
  from {
    stroke-dashoffset: 500;
  }
  to {
    stroke-dashoffset: 0;
  }
}
.thirdpath {
  stroke-dasharray: 500;
  animation: thirdanimate 5s linear forwards infinite;
}
@keyframes thirdanimate {
  from {
    stroke-dashoffset: 500;
  }
  to {
    stroke-dashoffset: 0;
  }
}
.row1col1 {
  animation-delay: 1s;
  animation: blink 2s step-start 0s infinite;
  -webkit-animation: blink 2s step-start 0s infinite;
}
@keyframes blink {
  0% {
    opacity: 1.0;
  }
  50% {
    opacity: 0.0;
  }
  100% {
    opacity: 1.0;
  }
}
@-webkit-keyframes blink {
  0% {
    opacity: 1.0;
  }
  50% {
    opacity: 0.0;
  }
  100% {
    opacity: 1.0;
  }
}

<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="841.89px" height="595.28px" viewBox="0 0 841.89 595.28" enable-background="new 0 0 841.89 595.28" xml:space="preserve">

  <g>
    <path class="firstpath" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" d="
			M253.441,284.167c0,0-0.883-14.535,15.429-18.551c5.364-1.32,15.943-0.665,21.667,6.79c13.859,18.051-3.235,32.286-8.087,37.262
			c-4.853,4.979-7.713,21.027-17.543,20.528c-9.829-0.497-12.69-6.717-12.317-11.818" />

    <path class="secondpath" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" d="
			M285.249,285.252c0,0,0.654-8.212-8.864-10.544c-9.519-2.334-16.796,8.211-10.825,17.449c2.613-1.12,5.226,0.652,5.599,2.52
			c0.373,1.866-1.213,4.199-3.826,4.199" />

    <path class="thirdpath" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" d="
			M257.815,307.553c0,0-3.732,5.879,2.333,8.118c6.065,2.241,5.318-8.118,8.865-9.237c3.545-1.119,11.943-2.519,11.943-10.265
			c0-7.744-6.398-16.451-17.522-11.958" />
  </g>

  <line class="row1col1" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="319.41" y1="287.987" x2="324.156" y2="286.627" />

  <line fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="328.667" y1="285.335" x2="332.744" y2="284.167" />

  <line fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="338.25" y1="301.171" x2="343.41" y2="301.171" />

  <line fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="328.667" y1="301.171" x2="333.75" y2="301.171" />

  <line fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="319.41" y1="301.171" x2="324.156" y2="301.171" />

  <line fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="313.741" y1="314.625" x2="319.41" y2="315.987" />

  <line fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="323.741" y1="316.746" x2="329.667" y2="318.142" />

</svg>

Answer 1

形状各部分的形成方式需要多个关键帧动画才能按照您的预期方式工作。

以下是您必须执行的操作：

• 耳朵动画虽然预计在5s标记处完成，但在线条动画完成之前不应开始下一次迭代。也就是说，在线条完成动画所花费的时间内，耳朵应该保持空闲状态。因此，我们必须设置animation-duration耳朵，使其涵盖线条完成动画所需的时间。在这里，每个 line 组件都需要1s，因此animation-duration所有元素（ear 和 lines）的总和将是12s.
• 耳朵动画应在5s标记处完成（总持续时间为12s），因此from-to关键帧设置应替换为百分比。耳朵动画应该开始0%并完成41%它（大致是5s标记）。从那里开始，它应该保持其位置直到100%( 12s) 标记（基本上直到线条完成动画）。
• 每个线组件应该在它们的前一部分完成动画之后row1col1开始，因此应该从41%耳朵完全可见的时候开始（直到那时它应该保持不可见）。
• row1col1需要1s动画（大约8%是12s），因此应该row1col2等到49%总持续时间开始动画。同样row2col1应该开始于57%，row2col2应该开始于66%等等。
• 如果线条需要慢慢淡入，那么让它从opacity: 0at开始并在41%get opacity: 1at 49%（row1col1其余的以此类推）。另一方面，如果您需要它们立即出现，请减少它获得的百分比opacity: 1。在片段中，我已经row1col1达到opacity: 1了42%自身的范围（就像0.12s）。

笔记：

• 我还修改了stroke-dasharray耳朵组件的设置，以避免最初在耳朵动画完成和线条动画开始之间存在延迟。
• 我还建议您获得一些 SVG 专家的帮助来检查是否没有。零件的数量可以最小化，因为它会减少没有。所需的关键帧等。不幸的是，我的 SVG 知识有限，所以我帮不上什么忙。

.firstpath {
  stroke-dasharray: 150;
  animation: firstanimate 12s linear forwards infinite;
}
@keyframes firstanimate {
  0% {
    stroke-dashoffset: 150;
  }
  41% {
    stroke-dashoffset: 0;
  }
}
.secondpath {
  stroke-dasharray: 100;
  animation: secondanimate 12s linear forwards infinite;
}
@keyframes secondanimate {
  0% {
    stroke-dashoffset: 100;
  }
  41% {
    stroke-dashoffset: 0;
  }
}
.thirdpath {
  stroke-dasharray: 65;
  animation: thirdanimate 12s linear forwards infinite;
}
@keyframes thirdanimate {
  0% {
    stroke-dashoffset: 65;
  }
  41% {
    stroke-dashoffset: 0;
  }
}
line {
  opacity: 0;
}
.row1col1 {
  animation: blink 12s linear forwards infinite;
}
@keyframes blink {
  41% {
    opacity: 0;
  }
  42%, 100% {
    opacity: 1;
  }  

}
.row1col2 {
  animation: blink2 12s linear forwards infinite;
}
@keyframes blink2 {
  49% {
    opacity: 0;
  }
  50%, 100% {
    opacity: 1;
  }
}
.row2col1 {
  animation: blink3 12s linear forwards infinite;
}
@keyframes blink3 {
  57% {
    opacity: 0;
  }
  58%, 100% {
    opacity: 1;
  }
}
.row2col2 {
  animation: blink4 12s linear forwards infinite;
}
@keyframes blink4 {
  66% {
    opacity: 0;
  }
  67%, 100% {
    opacity: 1;
  }
}
.row2col3 {
  animation: blink5 12s linear forwards infinite;
}
@keyframes blink5 {
  75% {
    opacity: 0;
  }
  76%, 100% {
    opacity: 1;
  }
}
.row3col1 {
  animation: blink6 12s linear forwards infinite;
}
@keyframes blink6 {
  84% {
    opacity: 0;
  }
  85%, 100% {
    opacity: 1;
  }
}

.row3col2 {
  animation: blink7 12s linear forwards infinite;
}
@keyframes blink7 {
  92% {
    opacity: 0;
  }
  93%, 100% {
    opacity: 1;
  }
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/prefixfree/1.0.7/prefixfree.min.js"></script>
<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="841.89px" height="595.28px" viewBox="0 0 841.89 595.28" enable-background="new 0 0 841.89 595.28" xml:space="preserve">

  <g>
    <path class="firstpath" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" d="
			M253.441,284.167c0,0-0.883-14.535,15.429-18.551c5.364-1.32,15.943-0.665,21.667,6.79c13.859,18.051-3.235,32.286-8.087,37.262
			c-4.853,4.979-7.713,21.027-17.543,20.528c-9.829-0.497-12.69-6.717-12.317-11.818" />

    <path class="secondpath" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" d="
			M285.249,285.252c0,0,0.654-8.212-8.864-10.544c-9.519-2.334-16.796,8.211-10.825,17.449c2.613-1.12,5.226,0.652,5.599,2.52
			c0.373,1.866-1.213,4.199-3.826,4.199" />

    <path class="thirdpath" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" d="
			M257.815,307.553c0,0-3.732,5.879,2.333,8.118c6.065,2.241,5.318-8.118,8.865-9.237c3.545-1.119,11.943-2.519,11.943-10.265
			c0-7.744-6.398-16.451-17.522-11.958" />
  </g>

  <line class="row1col1" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="319.41" y1="287.987" x2="324.156" y2="286.627" />

  <line class="row1col2" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="328.667" y1="285.335" x2="332.744" y2="284.167" />

  <line class="row2col3" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="338.25" y1="301.171" x2="343.41" y2="301.171" />

  <line class="row2col2" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="328.667" y1="301.171" x2="333.75" y2="301.171" />

  <line class="row2col1" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="319.41" y1="301.171" x2="324.156" y2="301.171" />

  <line class="row3col1" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="313.741" y1="314.625" x2="319.41" y2="315.987" />

  <line class="row3col2" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="323.741" y1="316.746" x2="329.667" y2="318.142" />

</svg>

Answer 2

您可以播放动画时间。延迟仅适用于第一个动画。您还应该将非前缀属性移到前面。

我制作了一个动画，每 5 秒（共 5 秒）闪烁 2 秒。

.firstpath {
  stroke-dasharray: 1500;
  animation: firstanimate 5s linear forwards infinite;
}

@keyframes firstanimate {
  from { stroke-dashoffset: 1500; }
  to { stroke-dashoffset: 0; }
}

.secondpath {
  stroke-dasharray: 500;
  animation: secondanimate 5s linear forwards infinite;
}

@keyframes secondanimate {
  from { stroke-dashoffset: 500; }
  to { stroke-dashoffset: 0; }
}

.thirdpath {
  stroke-dasharray: 500;
  animation: thirdanimate 5s linear forwards infinite;
}

@keyframes thirdanimate {
  from { stroke-dashoffset: 500; }
  to { stroke-dashoffset: 0; }
}


.row1col1 {
  animation: blink1 5s step-start 0s infinite;
  -webkit-animation: blink1 5s step-start 0s infinite;
}
@-webkit-keyframes blink1 {
    0% {
    opacity: 1.0;
  }
  70% {
    opacity: 1.0;
  }
  
  80% {
    opacity: 0.0;
  }
  
  100% {
    opacity: 1.0;
  }
}

@keyframes blink1 {
  0% {
    opacity: 1.0;
  }
  70% {
    opacity: 1.0;
  }
  80% {
    opacity: 0.0;
  }
  
  100% {
    opacity: 1.0;
  }
}

.row1col2 {
  animation: blinkl2 5s step-start 0s infinite;
  -webkit-animation: blink2 5s step-start 0s infinite;
}
@-webkit-keyframes blink2 {
  0% {
    opacity: 1.0;
  }
  80% {
    opacity: 1.0;
  }
  
  90% {
    opacity: 0.0;
  }
  
  100% {
    opacity: 1.0;
  }
}
@keyframes blink2 {
  0% {
    opacity: 1.0;
  }
  80% {
    opacity: 1.0;
  }
  
  90% {
    opacity: 0.0;
  }
  
  100% {
    opacity: 1.0;
  }
}
.row1col3 {
  animation: blinkl3 5s step-start 0s infinite;
  -webkit-animation: blink3 5s step-start 0s infinite;
}
@-webkit-keyframes blink2 {
  0% {
    opacity: 1.0;
  }
  90% {
    opacity: 1.0;
  }
  
  95% {
    opacity: 0.0;
  }
  
  100% {
    opacity: 1.0;
  }
}
@keyframes blink3 {
  0% {
    opacity: 1.0;
  }
  90% {
    opacity: 1.0;
  }
  
  95% {
    opacity: 0.0;
  }
  
  100% {
    opacity: 1.0;
  }
}

<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="841.89px" height="595.28px" viewBox="0 0 841.89 595.28" enable-background="new 0 0 841.89 595.28" xml:space="preserve">
	 
	<g>
		<path class="firstpath" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" d="
			M253.441,284.167c0,0-0.883-14.535,15.429-18.551c5.364-1.32,15.943-0.665,21.667,6.79c13.859,18.051-3.235,32.286-8.087,37.262
			c-4.853,4.979-7.713,21.027-17.543,20.528c-9.829-0.497-12.69-6.717-12.317-11.818"/>
			
		<path class="secondpath" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" d="
			M285.249,285.252c0,0,0.654-8.212-8.864-10.544c-9.519-2.334-16.796,8.211-10.825,17.449c2.613-1.12,5.226,0.652,5.599,2.52
			c0.373,1.866-1.213,4.199-3.826,4.199"/>
			
		<path class="thirdpath" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" d="
			M257.815,307.553c0,0-3.732,5.879,2.333,8.118c6.065,2.241,5.318-8.118,8.865-9.237c3.545-1.119,11.943-2.519,11.943-10.265
			c0-7.744-6.398-16.451-17.522-11.958"/>
	</g>

	<line class="row1col1" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="319.41" y1="287.987" x2="324.156" y2="286.627"/>

	<line class="row1col2" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="328.667" y1="285.335" x2="332.744" y2="284.167"/>

	<line class="row1col3" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="338.25" y1="301.171" x2="343.41" y2="301.171"/>

	<line class="row1col2" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="328.667" y1="301.171" x2="333.75" y2="301.171"/>

	<line class="row1col1" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="319.41" y1="301.171" x2="324.156" y2="301.171"/>

	<line class="row1col1" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="313.741" y1="314.625" x2="319.41" y2="315.987"/>

	<line class="row1col2" fill="none" stroke="#000000" stroke-width="3" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="323.741" y1="316.746" x2="329.667" y2="318.142"/>