Javascript 带SMIL的SVG动画_Javascript_Jquery_Svg_Smil

Javascript 带SMIL的SVG动画

javascript jquery svg

Javascript 带SMIL的SVG动画,javascript,jquery,svg,smil,Javascript,Jquery,Svg,Smil,关于使用smil SVG动画和使用javascript/jquery otf更改内容，我有一些问题 <svg version="1.1" id="story_animation_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 400 500" enable-background="new

关于使用smil SVG动画和使用javascript/jquery otf更改内容，我有一些问题

        <svg version="1.1" id="story_animation_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
        viewBox="0 0 400 500" enable-background="new 0 0 400 500" xml:space="preserve" style="background-color:#4B4542;">

            <g id="story_1">
                <path id="story_1_1" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,100z">
                    <animate id="story_1_1_1"
                             attributeName="d" 
                             from="M200,100l0,0" to="M200,100l0,380" dur="1s"
                             begin="0s;story_1_1_2.end"
                             end=""
                    />
                    <animate id="story_1_1_2" 
                             attributeName="d" 
                             from="M200,100l0,380" to="M200,100l0,0" dur="1s"
                             begin="story_1_1_1.end"
                             end=""
                    />
                </path>
                <path id="story_1_2" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,500z">
                    <animate id="story_1_2_1" 
                             attributeName="d" 
                             from="M200,500l0,0" to="M200,500l0,-380" dur="1s"
                             begin="story_1_1_1.begin+1s;story_1_2_2.end"
                             end=""
                    />
                    <animate id="story_1_2_2" 
                             attributeName="d" 
                             from="M200,500l0,-380" to="M200,500l0,0" dur="1s"
                             begin="story_1_2_1.end"
                             end=""
                    />
                </path>
            <g/>

            <g id="story_2">
                <path id="story_2_1" style="fill:none; stroke:#fff; stroke-width:2; stroke-dasharray:795.8291015625,795.8291015625; stroke-dashoffset:795.8291015625;" d="M200,100l86,50l-172,100l172,100l-172,100l86,50">
                    <animate id="story_2_1_1" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="-795.8291015625" dur="2s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                    <animate id="story_2_1_2" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="0" dur="1s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                </path>
            <g/>

        </svg>

以下是我已经尝试过的：

        <svg version="1.1" id="story_animation_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
        viewBox="0 0 400 500" enable-background="new 0 0 400 500" xml:space="preserve" style="background-color:#4B4542;">

            <g id="story_1">
                <path id="story_1_1" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,100z">
                    <animate id="story_1_1_1"
                             attributeName="d" 
                             from="M200,100l0,0" to="M200,100l0,380" dur="1s"
                             begin="0s;story_1_1_2.end"
                             end=""
                    />
                    <animate id="story_1_1_2" 
                             attributeName="d" 
                             from="M200,100l0,380" to="M200,100l0,0" dur="1s"
                             begin="story_1_1_1.end"
                             end=""
                    />
                </path>
                <path id="story_1_2" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,500z">
                    <animate id="story_1_2_1" 
                             attributeName="d" 
                             from="M200,500l0,0" to="M200,500l0,-380" dur="1s"
                             begin="story_1_1_1.begin+1s;story_1_2_2.end"
                             end=""
                    />
                    <animate id="story_1_2_2" 
                             attributeName="d" 
                             from="M200,500l0,-380" to="M200,500l0,0" dur="1s"
                             begin="story_1_2_1.end"
                             end=""
                    />
                </path>
            <g/>

            <g id="story_2">
                <path id="story_2_1" style="fill:none; stroke:#fff; stroke-width:2; stroke-dasharray:795.8291015625,795.8291015625; stroke-dashoffset:795.8291015625;" d="M200,100l86,50l-172,100l172,100l-172,100l86,50">
                    <animate id="story_2_1_1" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="-795.8291015625" dur="2s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                    <animate id="story_2_1_2" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="0" dur="1s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                </path>
            <g/>

        </svg>

HTML/XML:

        <svg version="1.1" id="story_animation_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
        viewBox="0 0 400 500" enable-background="new 0 0 400 500" xml:space="preserve" style="background-color:#4B4542;">

            <g id="story_1">
                <path id="story_1_1" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,100z">
                    <animate id="story_1_1_1"
                             attributeName="d" 
                             from="M200,100l0,0" to="M200,100l0,380" dur="1s"
                             begin="0s;story_1_1_2.end"
                             end=""
                    />
                    <animate id="story_1_1_2" 
                             attributeName="d" 
                             from="M200,100l0,380" to="M200,100l0,0" dur="1s"
                             begin="story_1_1_1.end"
                             end=""
                    />
                </path>
                <path id="story_1_2" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,500z">
                    <animate id="story_1_2_1" 
                             attributeName="d" 
                             from="M200,500l0,0" to="M200,500l0,-380" dur="1s"
                             begin="story_1_1_1.begin+1s;story_1_2_2.end"
                             end=""
                    />
                    <animate id="story_1_2_2" 
                             attributeName="d" 
                             from="M200,500l0,-380" to="M200,500l0,0" dur="1s"
                             begin="story_1_2_1.end"
                             end=""
                    />
                </path>
            <g/>

            <g id="story_2">
                <path id="story_2_1" style="fill:none; stroke:#fff; stroke-width:2; stroke-dasharray:795.8291015625,795.8291015625; stroke-dashoffset:795.8291015625;" d="M200,100l86,50l-172,100l172,100l-172,100l86,50">
                    <animate id="story_2_1_1" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="-795.8291015625" dur="2s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                    <animate id="story_2_1_2" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="0" dur="1s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                </path>
            <g/>

        </svg>

        <svg version="1.1" id="story_animation_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
        viewBox="0 0 400 500" enable-background="new 0 0 400 500" xml:space="preserve" style="background-color:#4B4542;">

            <g id="story_1">
                <path id="story_1_1" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,100z">
                    <animate id="story_1_1_1"
                             attributeName="d" 
                             from="M200,100l0,0" to="M200,100l0,380" dur="1s"
                             begin="0s;story_1_1_2.end"
                             end=""
                    />
                    <animate id="story_1_1_2" 
                             attributeName="d" 
                             from="M200,100l0,380" to="M200,100l0,0" dur="1s"
                             begin="story_1_1_1.end"
                             end=""
                    />
                </path>
                <path id="story_1_2" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,500z">
                    <animate id="story_1_2_1" 
                             attributeName="d" 
                             from="M200,500l0,0" to="M200,500l0,-380" dur="1s"
                             begin="story_1_1_1.begin+1s;story_1_2_2.end"
                             end=""
                    />
                    <animate id="story_1_2_2" 
                             attributeName="d" 
                             from="M200,500l0,-380" to="M200,500l0,0" dur="1s"
                             begin="story_1_2_1.end"
                             end=""
                    />
                </path>
            <g/>

            <g id="story_2">
                <path id="story_2_1" style="fill:none; stroke:#fff; stroke-width:2; stroke-dasharray:795.8291015625,795.8291015625; stroke-dashoffset:795.8291015625;" d="M200,100l86,50l-172,100l172,100l-172,100l86,50">
                    <animate id="story_2_1_1" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="-795.8291015625" dur="2s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                    <animate id="story_2_1_2" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="0" dur="1s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                </path>
            <g/>

        </svg>

令人钦佩的结果：

        <svg version="1.1" id="story_animation_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
        viewBox="0 0 400 500" enable-background="new 0 0 400 500" xml:space="preserve" style="background-color:#4B4542;">

            <g id="story_1">
                <path id="story_1_1" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,100z">
                    <animate id="story_1_1_1"
                             attributeName="d" 
                             from="M200,100l0,0" to="M200,100l0,380" dur="1s"
                             begin="0s;story_1_1_2.end"
                             end=""
                    />
                    <animate id="story_1_1_2" 
                             attributeName="d" 
                             from="M200,100l0,380" to="M200,100l0,0" dur="1s"
                             begin="story_1_1_1.end"
                             end=""
                    />
                </path>
                <path id="story_1_2" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,500z">
                    <animate id="story_1_2_1" 
                             attributeName="d" 
                             from="M200,500l0,0" to="M200,500l0,-380" dur="1s"
                             begin="story_1_1_1.begin+1s;story_1_2_2.end"
                             end=""
                    />
                    <animate id="story_1_2_2" 
                             attributeName="d" 
                             from="M200,500l0,-380" to="M200,500l0,0" dur="1s"
                             begin="story_1_2_1.end"
                             end=""
                    />
                </path>
            <g/>

            <g id="story_2">
                <path id="story_2_1" style="fill:none; stroke:#fff; stroke-width:2; stroke-dasharray:795.8291015625,795.8291015625; stroke-dashoffset:795.8291015625;" d="M200,100l86,50l-172,100l172,100l-172,100l86,50">
                    <animate id="story_2_1_1" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="-795.8291015625" dur="2s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                    <animate id="story_2_1_2" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="0" dur="1s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                </path>
            <g/>

        </svg>

我希望实现：

        <svg version="1.1" id="story_animation_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
        viewBox="0 0 400 500" enable-background="new 0 0 400 500" xml:space="preserve" style="background-color:#4B4542;">

            <g id="story_1">
                <path id="story_1_1" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,100z">
                    <animate id="story_1_1_1"
                             attributeName="d" 
                             from="M200,100l0,0" to="M200,100l0,380" dur="1s"
                             begin="0s;story_1_1_2.end"
                             end=""
                    />
                    <animate id="story_1_1_2" 
                             attributeName="d" 
                             from="M200,100l0,380" to="M200,100l0,0" dur="1s"
                             begin="story_1_1_1.end"
                             end=""
                    />
                </path>
                <path id="story_1_2" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,500z">
                    <animate id="story_1_2_1" 
                             attributeName="d" 
                             from="M200,500l0,0" to="M200,500l0,-380" dur="1s"
                             begin="story_1_1_1.begin+1s;story_1_2_2.end"
                             end=""
                    />
                    <animate id="story_1_2_2" 
                             attributeName="d" 
                             from="M200,500l0,-380" to="M200,500l0,0" dur="1s"
                             begin="story_1_2_1.end"
                             end=""
                    />
                </path>
            <g/>

            <g id="story_2">
                <path id="story_2_1" style="fill:none; stroke:#fff; stroke-width:2; stroke-dasharray:795.8291015625,795.8291015625; stroke-dashoffset:795.8291015625;" d="M200,100l86,50l-172,100l172,100l-172,100l86,50">
                    <animate id="story_2_1_1" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="-795.8291015625" dur="2s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                    <animate id="story_2_1_2" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="0" dur="1s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                </path>
            <g/>

        </svg>

有一个动画循环在不断地运行
在事件触发时（如单击、按键等），在当前迭代结束时结束当前正在运行的动画
在第一个动画结束时，启动第二个动画（-重复更多动画）（-理想情况下做同样的事情：从动画2变为动画1）

实际结果：

        <svg version="1.1" id="story_animation_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
        viewBox="0 0 400 500" enable-background="new 0 0 400 500" xml:space="preserve" style="background-color:#4B4542;">

            <g id="story_1">
                <path id="story_1_1" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,100z">
                    <animate id="story_1_1_1"
                             attributeName="d" 
                             from="M200,100l0,0" to="M200,100l0,380" dur="1s"
                             begin="0s;story_1_1_2.end"
                             end=""
                    />
                    <animate id="story_1_1_2" 
                             attributeName="d" 
                             from="M200,100l0,380" to="M200,100l0,0" dur="1s"
                             begin="story_1_1_1.end"
                             end=""
                    />
                </path>
                <path id="story_1_2" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,500z">
                    <animate id="story_1_2_1" 
                             attributeName="d" 
                             from="M200,500l0,0" to="M200,500l0,-380" dur="1s"
                             begin="story_1_1_1.begin+1s;story_1_2_2.end"
                             end=""
                    />
                    <animate id="story_1_2_2" 
                             attributeName="d" 
                             from="M200,500l0,-380" to="M200,500l0,0" dur="1s"
                             begin="story_1_2_1.end"
                             end=""
                    />
                </path>
            <g/>

            <g id="story_2">
                <path id="story_2_1" style="fill:none; stroke:#fff; stroke-width:2; stroke-dasharray:795.8291015625,795.8291015625; stroke-dashoffset:795.8291015625;" d="M200,100l86,50l-172,100l172,100l-172,100l86,50">
                    <animate id="story_2_1_1" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="-795.8291015625" dur="2s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                    <animate id="story_2_1_2" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="0" dur="1s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                </path>
            <g/>

        </svg>

到目前为止发生了什么：

        <svg version="1.1" id="story_animation_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
        viewBox="0 0 400 500" enable-background="new 0 0 400 500" xml:space="preserve" style="background-color:#4B4542;">

            <g id="story_1">
                <path id="story_1_1" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,100z">
                    <animate id="story_1_1_1"
                             attributeName="d" 
                             from="M200,100l0,0" to="M200,100l0,380" dur="1s"
                             begin="0s;story_1_1_2.end"
                             end=""
                    />
                    <animate id="story_1_1_2" 
                             attributeName="d" 
                             from="M200,100l0,380" to="M200,100l0,0" dur="1s"
                             begin="story_1_1_1.end"
                             end=""
                    />
                </path>
                <path id="story_1_2" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,500z">
                    <animate id="story_1_2_1" 
                             attributeName="d" 
                             from="M200,500l0,0" to="M200,500l0,-380" dur="1s"
                             begin="story_1_1_1.begin+1s;story_1_2_2.end"
                             end=""
                    />
                    <animate id="story_1_2_2" 
                             attributeName="d" 
                             from="M200,500l0,-380" to="M200,500l0,0" dur="1s"
                             begin="story_1_2_1.end"
                             end=""
                    />
                </path>
            <g/>

            <g id="story_2">
                <path id="story_2_1" style="fill:none; stroke:#fff; stroke-width:2; stroke-dasharray:795.8291015625,795.8291015625; stroke-dashoffset:795.8291015625;" d="M200,100l86,50l-172,100l172,100l-172,100l86,50">
                    <animate id="story_2_1_1" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="-795.8291015625" dur="2s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                    <animate id="story_2_1_2" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="0" dur="1s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                </path>
            <g/>

        </svg>

动画1循环工作正常
按键时：
案例1（顶行向下时按下）：
- 它起作用了
案例2（您在顶行上升时按下）：
- 静止动画重复一次，然后停止

我对如何做到这一点的不同方法和/或想法持开放态度。SMIL似乎至少在一开始是一种快速简便的方法，在移动设备上也有很好的性能。也许css3动画在这种情况下更好

        <svg version="1.1" id="story_animation_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
        viewBox="0 0 400 500" enable-background="new 0 0 400 500" xml:space="preserve" style="background-color:#4B4542;">

            <g id="story_1">
                <path id="story_1_1" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,100z">
                    <animate id="story_1_1_1"
                             attributeName="d" 
                             from="M200,100l0,0" to="M200,100l0,380" dur="1s"
                             begin="0s;story_1_1_2.end"
                             end=""
                    />
                    <animate id="story_1_1_2" 
                             attributeName="d" 
                             from="M200,100l0,380" to="M200,100l0,0" dur="1s"
                             begin="story_1_1_1.end"
                             end=""
                    />
                </path>
                <path id="story_1_2" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,500z">
                    <animate id="story_1_2_1" 
                             attributeName="d" 
                             from="M200,500l0,0" to="M200,500l0,-380" dur="1s"
                             begin="story_1_1_1.begin+1s;story_1_2_2.end"
                             end=""
                    />
                    <animate id="story_1_2_2" 
                             attributeName="d" 
                             from="M200,500l0,-380" to="M200,500l0,0" dur="1s"
                             begin="story_1_2_1.end"
                             end=""
                    />
                </path>
            <g/>

            <g id="story_2">
                <path id="story_2_1" style="fill:none; stroke:#fff; stroke-width:2; stroke-dasharray:795.8291015625,795.8291015625; stroke-dashoffset:795.8291015625;" d="M200,100l86,50l-172,100l172,100l-172,100l86,50">
                    <animate id="story_2_1_1" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="-795.8291015625" dur="2s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                    <animate id="story_2_1_2" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="0" dur="1s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                </path>
            <g/>

        </svg>

我怎样才能解决这个问题呢？

这是一个很难解决的问题……我在这里搞砸了：

        <svg version="1.1" id="story_animation_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
        viewBox="0 0 400 500" enable-background="new 0 0 400 500" xml:space="preserve" style="background-color:#4B4542;">

            <g id="story_1">
                <path id="story_1_1" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,100z">
                    <animate id="story_1_1_1"
                             attributeName="d" 
                             from="M200,100l0,0" to="M200,100l0,380" dur="1s"
                             begin="0s;story_1_1_2.end"
                             end=""
                    />
                    <animate id="story_1_1_2" 
                             attributeName="d" 
                             from="M200,100l0,380" to="M200,100l0,0" dur="1s"
                             begin="story_1_1_1.end"
                             end=""
                    />
                </path>
                <path id="story_1_2" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,500z">
                    <animate id="story_1_2_1" 
                             attributeName="d" 
                             from="M200,500l0,0" to="M200,500l0,-380" dur="1s"
                             begin="story_1_1_1.begin+1s;story_1_2_2.end"
                             end=""
                    />
                    <animate id="story_1_2_2" 
                             attributeName="d" 
                             from="M200,500l0,-380" to="M200,500l0,0" dur="1s"
                             begin="story_1_2_1.end"
                             end=""
                    />
                </path>
            <g/>

            <g id="story_2">
                <path id="story_2_1" style="fill:none; stroke:#fff; stroke-width:2; stroke-dasharray:795.8291015625,795.8291015625; stroke-dashoffset:795.8291015625;" d="M200,100l86,50l-172,100l172,100l-172,100l86,50">
                    <animate id="story_2_1_1" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="-795.8291015625" dur="2s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                    <animate id="story_2_1_2" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="0" dur="1s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                </path>
            <g/>

        </svg>

$(window).keypress(function(e) {//spacebar trigger
    if (e.keyCode === 0 || e.keyCode === 32) {
        $('#story_1_1_1, #story_1_1_2, #story_1_2_1, #story_1_2_2').attr('end', 'story_2_1_1.begin');
        $('#story_2_1_1').attr('begin', '0s;story_2_1_2.end');
    }
});

        <svg version="1.1" id="story_animation_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
        viewBox="0 0 400 500" enable-background="new 0 0 400 500" xml:space="preserve" style="background-color:#4B4542;">

            <g id="story_1">
                <path id="story_1_1" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,100z">
                    <animate id="story_1_1_1"
                             attributeName="d" 
                             from="M200,100l0,0" to="M200,100l0,380" dur="1s"
                             begin="0s;story_1_1_2.end"
                             end=""
                    />
                    <animate id="story_1_1_2" 
                             attributeName="d" 
                             from="M200,100l0,380" to="M200,100l0,0" dur="1s"
                             begin="story_1_1_1.end"
                             end=""
                    />
                </path>
                <path id="story_1_2" style="fill:none; stroke:#fff; stroke-width:2;" d="M200,500z">
                    <animate id="story_1_2_1" 
                             attributeName="d" 
                             from="M200,500l0,0" to="M200,500l0,-380" dur="1s"
                             begin="story_1_1_1.begin+1s;story_1_2_2.end"
                             end=""
                    />
                    <animate id="story_1_2_2" 
                             attributeName="d" 
                             from="M200,500l0,-380" to="M200,500l0,0" dur="1s"
                             begin="story_1_2_1.end"
                             end=""
                    />
                </path>
            <g/>

            <g id="story_2">
                <path id="story_2_1" style="fill:none; stroke:#fff; stroke-width:2; stroke-dasharray:795.8291015625,795.8291015625; stroke-dashoffset:795.8291015625;" d="M200,100l86,50l-172,100l172,100l-172,100l86,50">
                    <animate id="story_2_1_1" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="-795.8291015625" dur="2s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                    <animate id="story_2_1_2" 
                             attributeName="stroke-dashoffset" 
                             from="795.8291015625" to="0" dur="1s"
                             begin=""
                             calcMode="spline"
                             keySplines=".28 .25 .265 .25"
                             keyTimes="0;1"
                             end=""
                    />
                </path>
            <g/>

        </svg>