2019-12-02 12:54:32 +08:00
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<script src="../../dist/vue.global.js"></script>
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<script>
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// math helper...
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function valueToPoint (value, index, total) {
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var x = 0
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var y = -value * 0.8
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var angle = Math.PI * 2 / total * index
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var cos = Math.cos(angle)
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var sin = Math.sin(angle)
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var tx = x * cos - y * sin + 100
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var ty = x * sin + y * cos + 100
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return {
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x: tx,
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y: ty
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}
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}
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const AxisLabel = {
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template: '<text :x="point.x" :y="point.y">{{stat.label}}</text>',
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props: {
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stat: Object,
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index: Number,
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total: Number
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},
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computed: {
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point: function () {
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return valueToPoint(
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+this.stat.value + 10,
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this.index,
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this.total
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)
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}
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}
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}
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</script>
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<!-- template for the polygraph component. -->
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<script type="text/x-template" id="polygraph-template">
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<g>
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<polygon :points="points"></polygon>
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<circle cx="100" cy="100" r="80"></circle>
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<axis-label
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v-for="(stat, index) in stats"
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:stat="stat"
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:index="index"
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:total="stats.length">
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</axis-label>
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</g>
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</script>
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<script>
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const Polygraph = {
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props: ['stats'],
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template: '#polygraph-template',
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computed: {
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// a computed property for the polygon's points
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points() {
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const total = this.stats.length
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return this.stats.map((stat, i) => {
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const point = valueToPoint(stat.value, i, total)
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return point.x + ',' + point.y
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}).join(' ')
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}
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},
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components: {
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AxisLabel
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}
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}
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</script>
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<!-- demo root element -->
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<div id="demo">
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<!-- Use the polygraph component -->
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<svg width="200" height="200">
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<polygraph :stats="stats"></polygraph>
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</svg>
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<!-- controls -->
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<div v-for="stat in stats">
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<label>{{stat.label}}</label>
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<input type="range" v-model="stat.value" min="0" max="100">
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<span>{{stat.value}}</span>
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<button @click="remove(stat)" class="remove">X</button>
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</div>
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<form id="add">
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<input name="newlabel" v-model="newLabel">
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<button @click="add">Add a Stat</button>
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</form>
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<pre id="raw">{{ stats }}</pre>
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</div>
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<script>
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2019-12-21 00:56:36 +08:00
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const globalStats = [
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{ label: 'A', value: 100 },
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{ label: 'B', value: 100 },
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{ label: 'C', value: 100 },
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{ label: 'D', value: 100 },
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{ label: 'E', value: 100 },
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{ label: 'F', value: 100 }
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]
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2020-01-24 04:05:38 +08:00
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Vue.createApp({
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2019-12-02 12:54:32 +08:00
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components: {
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Polygraph
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},
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2020-01-24 04:05:38 +08:00
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data: () => ({
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2019-12-02 12:54:32 +08:00
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newLabel: '',
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2019-12-21 00:56:36 +08:00
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stats: globalStats
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2020-01-24 04:05:38 +08:00
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}),
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2019-12-02 12:54:32 +08:00
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methods: {
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add(e) {
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e.preventDefault()
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if (!this.newLabel) return
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this.stats.push({
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label: this.newLabel,
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value: 100
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})
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this.newLabel = ''
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},
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remove(stat) {
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if (this.stats.length > 3) {
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this.stats.splice(this.stats.indexOf(stat), 1)
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} else {
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alert('Can\'t delete more!')
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}
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}
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}
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2020-01-24 04:05:38 +08:00
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}).mount('#demo')
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2019-12-02 12:54:32 +08:00
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</script>
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<style>
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body {
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font-family: Helvetica Neue, Arial, sans-serif;
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}
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polygon {
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fill: #42b983;
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opacity: .75;
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}
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circle {
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fill: transparent;
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stroke: #999;
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}
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text {
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font-family: Helvetica Neue, Arial, sans-serif;
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font-size: 10px;
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fill: #666;
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}
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label {
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display: inline-block;
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margin-left: 10px;
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width: 20px;
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}
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#raw {
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position: absolute;
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top: 0;
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left: 300px;
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}
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</style>
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