#星光计划2.0# 鸿蒙ArkUI js纯代码实现一颗圣诞树 原创 精华

发布于 2021-12-25 12:23
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前言

今天是圣诞节,首先祝大家圣诞节快乐。作为程序员以代码得方式创建一颗圣诞树不失为一种浪漫。今天给大家带来使用鸿蒙纯js实现的圣诞树。
先看下效果图:
#星光计划2.0# 鸿蒙ArkUI js纯代码实现一颗圣诞树-开源基础软件社区

实现思路

圣诞树的轮廓我们可以通过svg来绘制,彩灯和星星闪闪可以通过透明度动画来实现。

实现步骤

使用svg组件绘制圣诞树的轮廓,彩灯,星星

<div class="container">
    <text class="title" style="margin-top: 10vp;">
        {{ $t('strings.merry-christmas') }}
    </text>

<!-- Generator: Adobe Illustrator 19.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
    <svg x="0" y="0"
         viewBox="0 0 512 512">

        <path fill="#559E62" d="M472.949,459.932c-47.729-30.92-78.102-60.746-78.102-60.746
		c22.78,2.169,34.747-26.034,34.747-26.034c-22.242-5.424-60.711-43.39-60.711-43.39c22.233-0.547,52.137-17.356,52.137-17.356
		c-23.864-3.792-86.65-69.424-86.65-69.424c19.525,2.716,34.981-8.678,34.981-8.678c-19.525-3.792-51.521-43.39-51.521-43.39
		c24.402,1.085,44.475-8.678,44.475-8.678c-42.34-26.112-77.173-92.637-92.915-126.716C261.163,63.419,256,74.466,256,86.78
		c0-12.314-5.163-23.361-13.39-31.258c-15.742,34.078-50.575,100.604-92.915,126.716c0,0,20.063,9.763,44.475,8.678
		c0,0-32.004,39.598-51.53,43.39c0,0,15.464,11.394,34.99,8.678c0,0-62.785,65.631-86.649,69.424c0,0,29.904,16.809,52.137,17.356
		c0,0-38.469,37.966-60.711,43.39c0,0,11.967,28.203,34.747,26.034c0,0-30.373,29.826-78.102,60.746
		c0,0,107.928,3.254,156.203-26.034c0,0-46.106,41.758-60.746,43.39c0,0,66.169-0.547,91.119-26.034c0,0,13.017,14.64,30.373,17.356
		c17.356-2.716,30.373-17.356,30.373-17.356c24.949,25.487,91.119,26.034,91.119,26.034c-14.64-1.631-60.746-43.39-60.746-43.39
		C365.021,463.186,472.949,459.932,472.949,459.932">
        </path>

        <path fill="#0f1f2f" d="M275.008,251.661h-11.984c-3.879,0-7.02-3.141-7.02-7.029v-11.976c0-3.888,3.141-7.029,7.02-7.029
			h11.984c3.879,0,7.029,3.141,7.029,7.029v11.976C282.037,248.52,278.887,251.661,275.008,251.661">


        </path>

        <path fill="#3971E5" d="M248.974,173.559H236.99c-3.879,0-7.02-3.141-7.02-7.029v-11.976c0-3.888,3.141-7.029,7.02-7.029
			h11.984c3.879,0,7.029,3.141,7.029,7.029v11.976C256.003,170.418,252.853,173.559,248.974,173.559">


        </path>

        <path fill="#0f1f2f" d="M214.262,295.051h-11.984c-3.879,0-7.02-3.141-7.02-7.029v-11.976c0-3.888,3.141-7.029,7.02-7.029
			h11.984c3.879,0,7.029,3.141,7.029,7.029v11.976C221.292,291.909,218.142,295.051,214.262,295.051">

        </path>
        <path fill="#aa1231" d="M327.076,312.407h-11.984c-3.879,0-7.02-3.141-7.02-7.029v-11.976c0-3.888,3.141-7.029,7.02-7.029
			h11.984c3.879,0,7.029,3.141,7.029,7.029v11.976C334.105,309.265,330.955,312.407,327.076,312.407">

        </path>
        <path fill="#c1881c" d="M327.076,407.864h-11.984c-3.879,0-7.02-3.141-7.02-7.029V388.86c0-3.888,3.141-7.029,7.02-7.029
			h11.984c3.879,0,7.029,3.141,7.029,7.029v11.976C334.105,404.723,330.955,407.864,327.076,407.864">

        </path>
        <path fill="#FF3328" d="M257.652,355.797h-11.984c-3.879,0-7.02-3.141-7.02-7.029v-11.976c0-3.888,3.141-7.029,7.02-7.029
			h11.984c3.879,0,7.029,3.141,7.029,7.029v11.976C264.681,352.655,261.531,355.797,257.652,355.797">

        </path>

        <path fill="1f3e64" d="M188.229,399.186h-11.984c-3.879,0-7.02-3.141-7.02-7.029v-11.976c0-3.888,3.141-7.029,7.02-7.029
			h11.984c3.879,0,7.029,3.141,7.029,7.029v11.976C195.258,396.045,192.108,399.186,188.229,399.186">
         
        </path>

    <!-- base -->
        <path fill="#994530" d="M256,468.61c-6.569-1.024-12.505-3.758-17.356-6.76v41.472h34.712V461.85
		C268.505,464.853,262.569,467.586,256,468.61">
        </path>

        <path fill="#7A3726" d="M299.39,512h-86.78c-4.79,0-8.678-3.879-8.678-8.678c0-4.799,3.888-8.678,8.678-8.678h86.78
		c4.79,0,8.678,3.879,8.678,8.678C308.068,508.121,304.18,512,299.39,512"></path>

    <!--star -->
        <path fill="#ffff02" d="M212.61,43.39C236.596,43.39,256,23.986,256,0c0,23.986,19.404,43.39,43.39,43.39
		c-23.986,0-43.39,19.404-43.39,43.39C256,62.794,236.596,43.39,212.61,43.39">


        </path>
    </svg>

</div>

上面我们使用的svg组件,指定的起始坐标是0,0,视口大小是512,512
接下来是在svg中使用path组件来绘制圣诞树的各个部分。其中fill表示填充颜色,d表示绘制点的集合。

添加动画实现灯的闪烁

 <path fill="#0f1f2f" d="M275.008,251.661h-11.984c-3.879,0-7.02-3.141-7.02-7.029v-11.976c0-3.888,3.141-7.029,7.02-7.029
			h11.984c3.879,0,7.029,3.141,7.029,7.029v11.976C282.037,248.52,278.887,251.661,275.008,251.661">

            <animate attributeName="fill" values="#0f1f2f;#28527c;#0f1f2f" keyTimes="0;0.4;0.8" dur="0.6s"
                     repeatCount="indefinite"></animate>
        </path

在灯的path组件下我们使用animate添加动画,指定fill表示更改七颜色,values表示三个颜色值,keyTimes对应values的显示时刻,dur表示总时长0.6s

本来想在星星上面增加缩放的动画来实现光晕,但是svg的animate好像不能设置缩放中心,都是以远点缩放,导致效果很怪,期待后续鸿蒙有更多的svg接口公开
#星光计划2.0# 鸿蒙ArkUI js纯代码实现一颗圣诞树-开源基础软件社区

源码下载

参考

svg-path
svg-animate
svg-animateTransform

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已于2021-12-25 12:23:40修改
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