如何控制CSS3动画的时机

时间：2015-11-17 10:27:03

标签： html css3 svg css-animations line-drawing

我正在研究SVG线条绘制动画，如下所示。

enter image description here

所以我正在做的是使用cPickle为耳朵制作动画并继续点。

我设法完成了耳朵画，但我不知道如何控制点的时间。以下是我的动画步骤：

  1. 5s内的耳朵绘制动画
  2. 5秒后，继续点动画（逐行动画）
  3. 完成圆点动画后，循环回到第1步

    4. 这是我的代码，但它逐渐闪烁。如何调整时间？

    stroke-dasharray
    .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;
  }
}

2 个答案:

答案 0 :(得分：4)

形状部分的形成方式，这需要多个关键帧动画才能按照您想要的方式工作。

以下是您需要做的事情：

  • 尽管预计在5s标记处完成的耳朵动画不应该开始下一次迭代，直到线条的动画完成为止。也就是说，耳朵应该在线完成动画所花费的时间内保持闲置状态。因此，我们必须为耳朵设置animation-duration，以便它涵盖线条完成动画所需的时间。在这里，每个线条组件都需要1s，因此所有元素（耳朵和线条）的总animation-duration将为12s。
  • 耳朵动画应该在5s标记处完成（在[{1}}的总持续时间内），因此12s - from关键帧设置应替换为百分比。耳朵动画应从to开始，并在0%（大致为41%标记）处完成。从那里开始，它应保持其位置直到5s（100%）标记（基本上直到线条完成动画）。
  • 每个线条组件应在其前一部分完成动画后开始，因此12s应从row1col1开始，这时耳朵变得完全可见（直到此时它应保持不可见）。
  • 41%需要row1col1到动画（1s大致8%），因此12s应该等到row1col2开始动画的总持续时间。同样，49%应从row2col1开始，57%应从row2col2开始，依此类推。
  • 如果线条需要慢慢淡入，请将其设为66% opacity: 0，41% opacity: 1（49%等等其余的）。另一方面，如果您需要它们即时出现，请减少它获得的百分比row1col1。在代码段中，我在opacity: 1处row1col1达到了opacity: 1到达42%（就像0.12s）。

注意：

  • 我还修改了耳朵组件的stroke-dasharray设置，以避免耳朵动画完成和线条动画开始之间的延迟。
  • 我还建议你让一些SVG专家帮忙检查一下是不是。部件可以最小化，因为它会减少没有。需要的关键帧等等。不幸的是，我的SVG知识是有限的，所以我对此无能为力。

.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>

答案 1 :(得分：1)

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。

我做了一个动画，每5秒钟闪烁2秒（总共5秒）。

＆＃13;
＆＃13; 
.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;
  }
}
＆＃13; 
<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"/>
＆＃13;
＆＃13;
＆＃13;

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