我的目标是为心率折线制作一个 svg 动画,如下所示 https://codepen.io/chriscoyier/pen/bGyoz
但看来我做错了。你知道这段代码有什么问题吗?
如果您知道一些使动画像真实心率一样的技术:始终从头开始显示线条而不是从末尾重建它,那就太好了! :-)
#heart {
position: absolute;
width: 100px;
height: 90px;
top: 50%;
left: 50%;
transform: translate(-50%,-50%);
z-index: 9999;
margin-top:10px;
}
#heart:before,
#heart:after {
position: absolute;
content: "";
left: 50px;
top: 0;
width: 50px;
height: 80px;
background: #1D74BA;
-moz-border-radius: 50px 50px 0 0;
border-radius: 50px 50px 0 0;
-webkit-transform: rotate(-45deg);
-moz-transform: rotate(-45deg);
-ms-transform: rotate(-45deg);
-o-transform: rotate(-45deg);
transform: rotate(-45deg);
-webkit-transform-origin: 0 100%;
-moz-transform-origin: 0 100%;
-ms-transform-origin: 0 100%;
-o-transform-origin: 0 100%;
transform-origin: 0 100%;
}
#heart:after {
left: 0;
-webkit-transform: rotate(45deg);
-moz-transform: rotate(45deg);
-ms-transform: rotate(45deg);
-o-transform: rotate(45deg);
transform: rotate(45deg);
-webkit-transform-origin: 100% 100%;
-moz-transform-origin: 100% 100%;
-ms-transform-origin: 100% 100%;
-o-transform-origin: 100% 100%;
transform-origin: 100% 100%;
}
svg.heart-rate {
position: absolute;
z-index: 999;
color: white;
fill: currentColor;
left: 213%;
top: 5%;
transform: translate(-50%,-50%) scale(0.85);
}
.path {
stroke-dasharray: 1000;
stroke-dashoffset: 1000;
animation: dash 2s linear alternate infinite;
}
@keyframes dash {
from {
stroke-dashoffset: 1000;
}
to {
stroke-dashoffset: 0;
}
}
<div id="heart">
<svg class="heart-rate" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="689px" height="359px" viewBox="0 0 689 359" preserveAspectRatio="xMidYMid meet" ><rect id="svgEditorBackground" x="0" y="0" width="689" height="359" style="fill: none; stroke: none;"/><path clas="path" style="stroke:white;fill:none;stroke-width:4px;" id="e1_polyline" d="M106.204 222.314 113.506 219.658 124.126 226.296 130.1 203.728 136.738 222.977 140.721 218.331 155.987 230.943 164.617 207.047 169.927 223.641 176.565 219.658 180.547 224.969 196.478 224.969"/></svg>
</div>
最佳答案
path
是一个元素,而不是一个类。您需要从选择器中删除句点。
.path { ... }
变为 path { ... }
#heart {
position: absolute;
width: 100px;
height: 90px;
top: 50%;
left: 50%;
transform: translate(-50%,-50%);
z-index: 9999;
margin-top:10px;
}
#heart:before,
#heart:after {
position: absolute;
content: "";
left: 50px;
top: 0;
width: 50px;
height: 80px;
background: #1D74BA;
-moz-border-radius: 50px 50px 0 0;
border-radius: 50px 50px 0 0;
-webkit-transform: rotate(-45deg);
-moz-transform: rotate(-45deg);
-ms-transform: rotate(-45deg);
-o-transform: rotate(-45deg);
transform: rotate(-45deg);
-webkit-transform-origin: 0 100%;
-moz-transform-origin: 0 100%;
-ms-transform-origin: 0 100%;
-o-transform-origin: 0 100%;
transform-origin: 0 100%;
}
#heart:after {
left: 0;
-webkit-transform: rotate(45deg);
-moz-transform: rotate(45deg);
-ms-transform: rotate(45deg);
-o-transform: rotate(45deg);
transform: rotate(45deg);
-webkit-transform-origin: 100% 100%;
-moz-transform-origin: 100% 100%;
-ms-transform-origin: 100% 100%;
-o-transform-origin: 100% 100%;
transform-origin: 100% 100%;
}
svg.heart-rate {
position: absolute;
z-index: 999;
color: white;
fill: currentColor;
left: 213%;
top: 5%;
transform: translate(-50%,-50%) scale(0.85);
}
path {
stroke-dasharray: 1000;
stroke-dashoffset: 1000;
animation: dash 2s linear alternate infinite;
}
@keyframes dash {
from {
stroke-dashoffset: 1000;
}
to {
stroke-dashoffset: 0;
}
}
<div id="heart">
<svg class="heart-rate" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="689px" height="359px" viewBox="0 0 689 359" preserveAspectRatio="xMidYMid meet" ><rect id="svgEditorBackground" x="0" y="0" width="689" height="359" style="fill: none; stroke: none;"/><path clas="path" style="stroke:white;fill:none;stroke-width:4px;" id="e1_polyline" d="M106.204 222.314 113.506 219.658 124.126 226.296 130.1 203.728 136.738 222.977 140.721 218.331 155.987 230.943 164.617 207.047 169.927 223.641 176.565 219.658 180.547 224.969 196.478 224.969"/></svg>
</div>
如果这是我的代码,我会稍微改变动画......
#heart {
position: absolute;
width: 100px;
height: 90px;
top: 50%;
left: 50%;
transform: translate(-50%,-50%);
z-index: 9999;
margin-top:10px;
}
#heart:before,
#heart:after {
position: absolute;
content: "";
left: 50px;
top: 0;
width: 50px;
height: 80px;
background: #1D74BA;
-moz-border-radius: 50px 50px 0 0;
border-radius: 50px 50px 0 0;
-webkit-transform: rotate(-45deg);
-moz-transform: rotate(-45deg);
-ms-transform: rotate(-45deg);
-o-transform: rotate(-45deg);
transform: rotate(-45deg);
-webkit-transform-origin: 0 100%;
-moz-transform-origin: 0 100%;
-ms-transform-origin: 0 100%;
-o-transform-origin: 0 100%;
transform-origin: 0 100%;
}
#heart:after {
left: 0;
-webkit-transform: rotate(45deg);
-moz-transform: rotate(45deg);
-ms-transform: rotate(45deg);
-o-transform: rotate(45deg);
transform: rotate(45deg);
-webkit-transform-origin: 100% 100%;
-moz-transform-origin: 100% 100%;
-ms-transform-origin: 100% 100%;
-o-transform-origin: 100% 100%;
transform-origin: 100% 100%;
}
svg.heart-rate {
position: absolute;
z-index: 999;
color: white;
fill: currentColor;
left: 213%;
top: 5%;
transform: translate(-50%,-50%) scale(0.85);
}
path {
stroke-dasharray: 500;
stroke-dashoffset: 500;
animation: dash 4s linear infinite;
}
@keyframes dash {
0% {
stroke-dashoffset: 500;
}
50% {
stroke-dashoffset: 0;
}
100% {
stroke-dashoffset: -500;
}
}
<div id="heart">
<svg class="heart-rate" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="689px" height="359px" viewBox="0 0 689 359" preserveAspectRatio="xMidYMid meet" ><rect id="svgEditorBackground" x="0" y="0" width="689" height="359" style="fill: none; stroke: none;"/><path clas="path" style="stroke:white;fill:none;stroke-width:4px;" id="e1_polyline" d="M106.204 222.314 113.506 219.658 124.126 226.296 130.1 203.728 136.738 222.977 140.721 218.331 155.987 230.943 164.617 207.047 169.927 223.641 176.565 219.658 180.547 224.969 196.478 224.969"/></svg>
</div>
关于css - svg 动画折线 心率,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/49446318/