From d3ebcb29a7ae129f188b16a42ecb9583d57f6ca4 Mon Sep 17 00:00:00 2001
From: Jeffrey Duroyon <jeffrey.duroyon@gmail.com>
Date: Mon, 13 Jan 2020 23:14:32 +0100
Subject: [PATCH] feat(wheel): add spinning wheel

---
 package-lock.json                             |   5 +
 package.json                                  |   1 +
 src/App.vue                                   |   3 +
 .../spinning_wheel/SpinningWheel.vue          | 149 ++++++++++++++++++
 4 files changed, 158 insertions(+)
 create mode 100644 src/components/spinning_wheel/SpinningWheel.vue

diff --git a/package-lock.json b/package-lock.json
index 226ebe4..25b5ab2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3566,6 +3566,11 @@
       "integrity": "sha1-WW6WmP0MgOEgOMK4LW6xs1tiJNk=",
       "dev": true
     },
+    "d3": {
+      "version": "3.5.17",
+      "resolved": "https://registry.npmjs.org/d3/-/d3-3.5.17.tgz",
+      "integrity": "sha1-vEZ0gAQ3iyGjYMn8fPUjF5B2L7g="
+    },
     "dashdash": {
       "version": "1.14.1",
       "resolved": "https://registry.npmjs.org/dashdash/-/dashdash-1.14.1.tgz",
diff --git a/package.json b/package.json
index ddd3b35..1930af7 100644
--- a/package.json
+++ b/package.json
@@ -9,6 +9,7 @@
   "dependencies": {
     "core-js": "^3.4.4",
     "vue": "^2.6.10",
+    "d3": "3.5.17",
     "vuetify": "^2.1.0"
   },
   "devDependencies": {
diff --git a/src/App.vue b/src/App.vue
index 05878a1..6b03050 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -6,6 +6,7 @@
 
     <v-content>
       <SpeechlessPage/>
+      <SpinningWheel/>
     </v-content>
   </v-app>
 </template>
@@ -13,6 +14,7 @@
 <script>
 
 import SpeechlessPage from "./components/speechless_page/SpeechLessPage";
+import SpinningWheel from "./components/spinning_wheel/SpinningWheel";
 export default {
   name: 'App',
   props: {
@@ -22,6 +24,7 @@ export default {
     drawer: null,
   }),
   components: {
+    SpinningWheel,
     SpeechlessPage
   },
 };
diff --git a/src/components/spinning_wheel/SpinningWheel.vue b/src/components/spinning_wheel/SpinningWheel.vue
new file mode 100644
index 0000000..b6e9207
--- /dev/null
+++ b/src/components/spinning_wheel/SpinningWheel.vue
@@ -0,0 +1,149 @@
+<template>
+    <div>
+        <div id="chart"></div>
+        <div id="question"><h1></h1></div>
+    </div>
+</template>
+
+<script>
+    import * as d3 from 'd3'
+    export default {
+        name: 'SpinningWheel',
+        data: function () {
+            return {
+                container: null,
+                dataSpin : [
+                    {Nom:"Un film",  Lien:""},
+                    {Nom:"Une serie", Lien:""},
+                    {Nom:"Un logiciel", Lien:""}
+                ],
+            }
+        },
+        methods : {
+            getDataSpin(){
+                return this.dataSpin;
+            },
+            removeGraph(){
+                d3.select('#chart svg').remove()
+            },
+            buildGraph(){
+                // Strongly inspired by https://codepen.io/abarres/pen/KKwdNKq
+                var padding = {top:20, right:40, bottom:0, left:0},
+                    w = 500 - padding.left - padding.right,
+                    h = 500 - padding.top  - padding.bottom,
+                    r = Math.min(w, h)/2,
+                    rotation = 0,
+                    oldrotation = 0,
+                    picked = 100000,
+                    color = d3.scale.category20();
+                var data = this.getDataSpin();
+                var svg = d3.select('#chart')
+                    .append("svg")
+                    .data([data])
+                    .attr("width",  w + padding.left + padding.right)
+                    .attr("height", h + padding.top + padding.bottom);
+                var container = svg.append("g")
+                    .attr("class", "chartholder")
+                    .attr("transform", "translate(" + (w/2 + padding.left) + "," + (h/2 + padding.top) + ")");
+                var vis = container
+                    .append("g");
+
+                var pie = d3.layout.pie().sort(null).value(()=>{return 1;});
+                // declare an arc generator function
+                var arc = d3.svg.arc().outerRadius(r);
+                // select paths, use arc generator to draw
+                var arcs = vis.selectAll("g.slice")
+                    .data(pie)
+                    .enter()
+                    .append("g")
+                    .attr("class", "slice");
+                arcs.append("path")
+                    .attr("fill", function(d, i){ return color(i); })
+                    .attr("d", function (d) { return arc(d); });
+                // add the text
+                arcs.append("text").attr("transform", function(d){
+                    d.innerRadius = 0;
+                    d.outerRadius = r;
+                    d.angle = (d.startAngle + d.endAngle)/2;
+                    return "rotate(" + (d.angle * 180 / Math.PI - 90) + ")translate(" + (d.outerRadius -10) +")";
+                })
+                    .attr("text-anchor", "end")
+                    .style("font-size", "20px")
+                    .text( function(d, i) {
+                        return data[i].Nom;
+                    });
+                container.on("click", ()=> {
+                    var  ps       = 360/data.length,
+                        rng      = Math.floor((Math.random() * 1440) + 360);
+
+                    rotation = (Math.round(rng / ps) * ps);
+
+                    picked = Math.round(data.length - (rotation % 360)/ps);
+                    picked = picked >= data.length ? (picked % data.length) : picked;
+
+                    rotation += 90 - Math.round(ps/2);
+                    vis.transition()
+                        .duration(3000)
+                        .attrTween("transform", ()=> {
+                            var i = d3.interpolate(oldrotation % 360, rotation);
+                            return function(t) {
+                                return "rotate(" + i(t) + ")";
+                            };
+                        })
+                        .each("end", function(){
+                            //populate link
+                            d3.select("#link h1")
+                                .text(data[picked].Lien);
+                            oldrotation = rotation;
+
+                        });
+                });
+                //make arrow
+                svg.append("g")
+                    .attr("transform", "translate(" + (w + padding.left + padding.right) + "," + ((h/2)+padding.top) + ")")
+                    .append("path")
+                    .attr("d", "M-" + (r*.15) + ",0L0," + (r*.05) + "L0,-" + (r*.05) + "Z")
+                    .style({"fill":"black"});
+            }
+        },
+        created() {
+        },
+
+        computed: {
+            formTitle () {
+                return this.editedIndex === -1 ? 'New Item' : 'Edit Item'
+            },
+        },
+        watch: {
+            dialog (val) {
+                val || this.close()
+            },
+        },
+        mounted() {
+            this.buildGraph()
+        }
+    }
+</script>
+
+<style>
+    #chart{
+        width:500px;
+        height:500px;
+        display:inline-block;
+    }
+    #link{
+        display:inline-block;;
+    }
+    #link h1{
+        font-size: 50px;
+        font-weight: bold;
+        font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
+        position: absolute;
+        padding: 0;
+        margin: 0;
+        top:50%;
+        -webkit-transform:translate(0,-50%);
+        transform:translate(0,-50%);
+    }
+
+</style>