182 lines
5.8 KiB
JavaScript
Executable File
182 lines
5.8 KiB
JavaScript
Executable File
//
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// Diagramme "radar" montrant les notes d'un étudiant
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//
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// ScoDoc, (c) E. Viennet 2012
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//
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// Ce code utilise d3.js
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var WIDTH = 460; // taille du canvas SVG
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var HEIGHT = WIDTH;
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var CX = WIDTH/2; // coordonnees centre du cercle
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var CY = HEIGHT/2;
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var RR = 0.4*WIDTH; // Rayon du cercle exterieur
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/* Emplacements des marques (polygones et axe gradué) */
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var R_TICS = [ 8, 10, 20 ]; /* [6, 8, 10, 12, 14, 16, 18, 20]; */
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var R_AXIS_TICS = [4, 6, 8, 10, 12, 14, 16, 18, 20];
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var NB_TICS = R_TICS.length;
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draw_radar(notes);
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function draw_radar(notes) {
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/* Calcul coordonnées des éléments */
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var nmod = notes.length;
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var angle = 2*Math.PI/nmod;
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for (var i=0; i<notes.length; i++) {
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var d = notes[i];
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var cx = Math.sin(i*angle);
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var cy = - Math.cos(i*angle);
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d["x_v"] = CX + RR * d.note/20 * cx;
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d["y_v"] = CY + RR * d.note/20 * cy;
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d["x_moy"] = CX + RR * d.moy/20 * cx;
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d["y_moy"] = CY + RR * d.moy/20 * cy;
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d["x_20"] = CX + RR * cx;
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d["y_20"] = CY + RR * cy;
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d["x_label"] = CX + (RR + 25) * cx - 10
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d["y_label"] = CY + (RR + 25) * cy + 10;
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d["tics"] = [];
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// Coords des tics sur chaque axe
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for (var j=0; j < NB_TICS; j++) {
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var r = R_TICS[j]/20 * RR;
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d["tics"][j] = { "x" : CX + r * cx, "y" : CY + r * cy };
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}
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}
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var notes_circ = notes.slice(0);
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notes_circ.push(notes[0])
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var notes_circ_valid = notes_circ.filter( function(e,i,a) { return e.note != 'NA' && e.note != '-'; } );
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var notes_valid = notes.filter( function(e,i,a) { return e.note != 'NA' && e.note != '-'; } )
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/* Crée l'élément SVG */
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g = d3.select("#radar_bulletin").append("svg")
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.attr("class", "radar")
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.attr("width", WIDTH)
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.attr("height", HEIGHT);
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/* Centre */
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g.append( "circle" ).attr("cy", CY)
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.attr("cx", CX)
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.attr("r", 2)
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.attr("class", "radar_center_mark");
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/* Lignes "tics" */
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for (var j=0; j < NB_TICS; j++) {
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var ligne_tics = d3.svg.line()
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.x(function(d) { return d["tics"][j]["x"]; })
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.y(function(d) { return d["tics"][j]["y"]; });
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g.append( "svg:path" )
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.attr("class", "radar_disk_tic")
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.attr("id", "radar_disk_tic_" + R_TICS[j])
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.attr("d", ligne_tics(notes_circ));
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}
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/* Lignes radiales pour chaque module */
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g.selectAll("radar_rad")
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.data(notes)
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.enter().append("line")
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.attr("x1", CX)
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.attr("y1", CY)
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.attr("x2", function(d) { return d["x_20"]; })
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.attr("y2", function(d) { return d["y_20"]; })
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.attr("class", "radarrad");
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/* Lignes entre notes */
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var ligne = d3.svg.line()
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.x(function(d) { return d["x_v"]; })
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.y(function(d) { return d["y_v"]; });
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g.append( "svg:path" )
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.attr("class", "radarnoteslines")
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.attr("d", ligne(notes_circ_valid));
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var ligne_moy = d3.svg.line()
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.x(function(d) { return d["x_moy"]; })
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.y(function(d) { return d["y_moy"]; })
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g.append( "svg:path" )
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.attr("class", "radarmoylines")
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.attr("d", ligne_moy(notes_circ_valid));
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/* Points (notes) */
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g.selectAll("circle1")
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.data(notes_valid)
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.enter().append("circle")
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.attr("cx", function(d) { return d["x_v"]; })
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.attr("cy", function(d) { return d["y_v"]; })
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.attr("r", function(x, i) { return 3; } )
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.style("stroke-width", 1)
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.style("stroke", "black")
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.style("fill", "blue")
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.on("mouseover", function(d) {
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var rwidth = 290;
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var x = d["x_v"];
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if (x + rwidth + 12 > WIDTH) {
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x = WIDTH - rwidth - 12;
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}
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var r = g.append("rect")
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.attr('class','radartip')
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.attr("x", x + 5)
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.attr("y", d["y_v"] + 5 );
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var txt = g.append("text").text("Note: " + d.note + "/20, moyenne promo: " + d.moy + "/20")
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.attr('class','radartip')
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.attr("x", x + 5 + 5)
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.attr("y", d["y_v"] + 5 + 16 );
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r.attr("width", rwidth).attr("height", 20);
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})
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.on("mouseout", function(d){
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d3.selectAll(".radartip").remove()
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});
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/* Valeurs des notes */
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g.selectAll("notes_labels")
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.data(notes_valid)
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.enter().append("text")
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.text(function(d) { return d["note"]; })
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.attr("x", function(d) {
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return d["x_v"];
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})
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.attr("y", function(d) {
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if (d["y_v"] > CY)
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return d["y_v"] + 16;
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else
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return d["y_v"] - 8;
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})
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.attr("class", "note_label");
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/* Petits points sur les poyennes */
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g.selectAll("circle2")
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.data(notes_valid)
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.enter().append("circle")
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.attr("cx", function(d) { return d["x_moy"]; })
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.attr("cy", function(d) { return d["y_moy"]; })
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.attr("r", function(x, i) { return 2; } )
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.style("stroke-width", 0)
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.style("stroke", "black")
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.style("fill", "rgb(20,90,50)");
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/* Valeurs sur axe */
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g.selectAll("textaxis")
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.data( R_AXIS_TICS )
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.enter().append("text")
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.text(String)
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.attr("x", CX - 10)
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.attr("y", function(x, i) { return CY - x*RR/20 + 6; })
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.attr("class", "textaxis");
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/* Noms des modules */
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g.selectAll("text_modules")
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.data(notes)
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.enter().append("text")
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.text( function(d) { return d['code']; } )
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.attr("x", function(d) { return d['x_label']; } )
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.attr("y", function(d) { return d['y_label']; })
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.attr("dx", 0)
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.attr("dy", 0);
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} |