603 lines
15 KiB
JavaScript
603 lines
15 KiB
JavaScript
define(() => {
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'use strict';
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/* jshint -W071 */ // TODO: break up rendering logic
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function empty(node) {
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while(node.childNodes.length > 0) {
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node.removeChild(node.lastChild);
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}
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}
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function mergeSets(target, b) {
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if(!b) {
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return;
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}
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for(let i = 0; i < b.length; ++ i) {
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if(target.indexOf(b[i]) === -1) {
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target.push(b[i]);
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}
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}
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}
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function removeAll(target, b) {
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if(!b) {
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return;
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}
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for(let i = 0; i < b.length; ++ i) {
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const p = target.indexOf(b[i]);
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if(p !== -1) {
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target.splice(p, 1);
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}
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}
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}
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const NS = 'http://www.w3.org/2000/svg';
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const LINE_HEIGHT = 1.3;
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const TITLE_MARGIN = 10;
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const OUTER_MARGIN = 5;
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const BOX_PADDING = 10;
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const AGENT_MARGIN = 10;
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const AGENT_CROSS_SIZE = 20;
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const AGENT_NONE_HEIGHT = 10;
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const ACTION_MARGIN = 5;
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const CONNECT_HEIGHT = 8;
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const CONNECT_POINT = 4;
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const CONNECT_LABEL_PADDING = 6;
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const CONNECT_LABEL_MASK_PADDING = 3;
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const CONNECT_LABEL_MARGIN_TOP = 2;
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const CONNECT_LABEL_MARGIN_BOTTOM = 1;
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const ATTRS = {
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TITLE: {
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'font-family': 'sans-serif',
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'font-size': 20,
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'text-anchor': 'middle',
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'class': 'title',
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},
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AGENT_LINE: {
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'fill': 'none',
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'stroke': '#000000',
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'stroke-width': 1,
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},
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AGENT_BOX: {
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'fill': '#FFFFFF',
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'stroke': '#000000',
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'stroke-width': 1,
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'height': 24,
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},
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AGENT_BOX_LABEL: {
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'font-family': 'sans-serif',
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'font-size': 12,
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'text-anchor': 'middle',
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},
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AGENT_CROSS: {
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'fill': 'none',
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'stroke': '#000000',
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'stroke-width': 1,
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},
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AGENT_BAR: {
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'fill': '#000000',
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'height': 5,
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},
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CONNECT_LINE_SOLID: {
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'fill': 'none',
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'stroke': '#000000',
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'stroke-width': 1,
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},
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CONNECT_LINE_DASH: {
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'fill': 'none',
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'stroke': '#000000',
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'stroke-width': 1,
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'stroke-dasharray': '2, 2',
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},
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CONNECT_LABEL: {
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'font-family': 'sans-serif',
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'font-size': 8,
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'text-anchor': 'middle',
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},
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CONNECT_LABEL_MASK: {
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'fill': '#FFFFFF',
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},
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CONNECT_HEAD: {
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'fill': '#000000',
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'stroke': '#000000',
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'stroke-width': 1,
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'stroke-linejoin': 'miter',
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},
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};
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function makeText(text = '') {
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return document.createTextNode(text);
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}
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function makeSVGNode(type, attrs = {}) {
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const o = document.createElementNS(NS, type);
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for(let k in attrs) {
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if(attrs.hasOwnProperty(k)) {
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o.setAttribute(k, attrs[k]);
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}
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}
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return o;
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}
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function traverse(stages, fn) {
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stages.forEach((stage) => {
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fn(stage);
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if(stage.type === 'block') {
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stage.sections.forEach((section) => {
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traverse(section.stages, fn);
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});
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}
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});
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}
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return class Renderer {
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constructor() {
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this.base = makeSVGNode('svg', {
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'xmlns': NS,
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'version': '1.1',
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'width': '100%',
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'height': '100%',
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});
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this.title = makeSVGNode('text', Object.assign({
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'y': ATTRS.TITLE['font-size'] + OUTER_MARGIN,
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}, ATTRS.TITLE));
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this.titleText = makeText();
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this.title.appendChild(this.titleText);
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this.base.appendChild(this.title);
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this.diagram = makeSVGNode('g');
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this.agentLines = makeSVGNode('g');
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this.agentDecor = makeSVGNode('g');
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this.actions = makeSVGNode('g');
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this.diagram.appendChild(this.agentLines);
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this.diagram.appendChild(this.agentDecor);
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this.diagram.appendChild(this.actions);
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this.base.appendChild(this.diagram);
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this.renderAgentCap = {
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'box': this.renderAgentCapBox.bind(this),
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'cross': this.renderAgentCapCross.bind(this),
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'bar': this.renderAgentCapBar.bind(this),
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'none': this.renderAgentCapNone.bind(this),
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};
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this.renderAction = {
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'agent begin': this.renderAgentBegin.bind(this),
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'agent end': this.renderAgentEnd.bind(this),
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'connection': this.renderConnection.bind(this),
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'block': this.renderBlock.bind(this),
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'note over': this.renderNoteOver.bind(this),
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'note left': this.renderNoteLeft.bind(this),
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'note right': this.renderNoteRight.bind(this),
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'note between': this.renderNoteBetween.bind(this),
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};
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this.separationAction = {
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'agent begin': this.separationAgentCap.bind(this),
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'agent end': this.separationAgentCap.bind(this),
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'connection': this.separationConnection.bind(this),
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'block': this.separationBlock.bind(this),
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'note over': this.separationNoteOver.bind(this),
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'note left': this.separationNoteLeft.bind(this),
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'note right': this.separationNoteRight.bind(this),
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'note between': this.separationNoteBetween.bind(this),
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};
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this.width = 0;
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this.height = 0;
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}
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addSeparation(agentInfo, agent, dist) {
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let d = agentInfo.separations.get(agent) || 0;
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agentInfo.separations.set(agent, Math.max(d, dist));
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}
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separationAgentCap(agentInfos, stage) {
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switch(stage.mode) {
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case 'box':
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case 'bar':
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stage.agents.forEach((agent1) => {
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const info1 = agentInfos.get(agent1);
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const sep1 = (
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info1.labelWidth / 2 +
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AGENT_MARGIN
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);
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stage.agents.forEach((agent2) => {
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if(agent1 === agent2) {
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return;
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}
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const info2 = agentInfos.get(agent2);
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this.addSeparation(info1, agent2,
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sep1 + info2.labelWidth / 2
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);
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});
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this.visibleAgents.forEach((agent2) => {
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if(stage.agents.indexOf(agent2) === -1) {
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const info2 = agentInfos.get(agent2);
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this.addSeparation(info1, agent2, sep1);
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this.addSeparation(info2, agent1, sep1);
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}
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});
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});
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break;
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case 'cross':
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stage.agents.forEach((agent1) => {
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const info1 = agentInfos.get(agent1);
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const sep1 = (
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AGENT_CROSS_SIZE / 2 +
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AGENT_MARGIN
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);
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stage.agents.forEach((agent2) => {
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if(agent1 === agent2) {
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return;
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}
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this.addSeparation(info1, agent2,
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sep1 + AGENT_CROSS_SIZE / 2
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);
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});
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this.visibleAgents.forEach((agent2) => {
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if(stage.agents.indexOf(agent2) === -1) {
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const info2 = agentInfos.get(agent2);
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this.addSeparation(info1, agent2, sep1);
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this.addSeparation(info2, agent1, sep1);
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}
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});
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});
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break;
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}
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if(stage.type === 'agent begin') {
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mergeSets(this.visibleAgents, stage.agents);
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} else if(stage.type === 'agent end') {
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removeAll(this.visibleAgents, stage.agents);
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}
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}
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separationConnection(agentInfos, stage) {
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const w = (
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this.testTextWidth(this.testConnectWidth, stage.label) +
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CONNECT_POINT * 2 +
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CONNECT_LABEL_PADDING * 2 +
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ATTRS.AGENT_LINE['stroke-width']
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);
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const agent1 = stage.agents[0];
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const agent2 = stage.agents[1];
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this.addSeparation(agentInfos.get(agent1), agent2, w);
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this.addSeparation(agentInfos.get(agent2), agent1, w);
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}
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separationBlock(/*agentInfos, stage*/) {
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// TODO
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}
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separationNoteOver(/*agentInfos, stage*/) {
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// TODO
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}
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separationNoteLeft(/*agentInfos, stage*/) {
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// TODO
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}
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separationNoteRight(/*agentInfos, stage*/) {
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// TODO
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}
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separationNoteBetween(/*agentInfos, stage*/) {
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// TODO
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}
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checkSeparation(agentInfos, stage) {
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this.separationAction[stage.type](agentInfos, stage);
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}
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renderAgentCapBox({x, labelWidth, label}) {
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this.agentDecor.appendChild(makeSVGNode('rect', Object.assign({
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'x': x - labelWidth / 2,
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'y': this.currentY,
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'width': labelWidth,
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}, ATTRS.AGENT_BOX)));
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const name = makeSVGNode('text', Object.assign({
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'x': x,
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'y': this.currentY + (
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ATTRS.AGENT_BOX.height +
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ATTRS.AGENT_BOX_LABEL['font-size'] * (2 - LINE_HEIGHT)
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) / 2,
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}, ATTRS.AGENT_BOX_LABEL));
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name.appendChild(makeText(label));
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this.agentDecor.appendChild(name);
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return {
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lineTop: 0,
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lineBottom: ATTRS.AGENT_BOX.height,
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height: ATTRS.AGENT_BOX.height,
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};
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}
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renderAgentCapCross({x}) {
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const y = this.currentY;
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const d = AGENT_CROSS_SIZE / 2;
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this.agentDecor.appendChild(makeSVGNode('path', Object.assign({
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'd': (
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'M ' + (x - d) + ' ' + y +
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' L ' + (x + d) + ' ' + (y + d * 2) +
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' M ' + (x + d) + ' ' + y +
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' L ' + (x - d) + ' ' + (y + d * 2)
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),
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}, ATTRS.AGENT_CROSS)));
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return {
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lineTop: d,
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lineBottom: d,
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height: d * 2,
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};
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}
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renderAgentCapBar({x, labelWidth}) {
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this.agentDecor.appendChild(makeSVGNode('rect', Object.assign({
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'x': x - labelWidth / 2,
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'y': this.currentY,
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'width': labelWidth,
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}, ATTRS.AGENT_BAR)));
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return {
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lineTop: 0,
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lineBottom: ATTRS.AGENT_BAR.height,
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height: ATTRS.AGENT_BAR.height,
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};
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}
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renderAgentCapNone() {
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return {
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lineTop: AGENT_NONE_HEIGHT,
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lineBottom: 0,
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height: AGENT_NONE_HEIGHT,
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};
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}
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renderAgentBegin(agentInfos, stage) {
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let shifts = {height: 0};
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stage.agents.forEach((agent) => {
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const agentInfo = agentInfos.get(agent);
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shifts = this.renderAgentCap[stage.mode](agentInfo);
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agentInfo.latestYStart = this.currentY + shifts.lineBottom;
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});
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this.currentY += shifts.height + ACTION_MARGIN;
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}
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renderAgentEnd(agentInfos, stage) {
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let shifts = {height: 0};
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stage.agents.forEach((agent) => {
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const agentInfo = agentInfos.get(agent);
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const x = agentInfo.x;
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shifts = this.renderAgentCap[stage.mode](agentInfo);
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this.agentLines.appendChild(makeSVGNode('path', Object.assign({
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'd': (
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'M ' + x + ' ' + agentInfo.latestYStart +
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' L ' + x + ' ' + (this.currentY + shifts.lineTop)
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),
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}, ATTRS.AGENT_LINE)));
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agentInfo.latestYStart = null;
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});
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this.currentY += shifts.height + ACTION_MARGIN;
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}
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renderConnection(agentInfos, {label, agents, line, left, right}) {
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/* jshint -W074, -W071 */ // TODO: tidy this up
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const from = agentInfos.get(agents[0]);
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const to = agentInfos.get(agents[1]);
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const dy = CONNECT_HEIGHT / 2;
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const dx = CONNECT_POINT;
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const dir = (from.x < to.x) ? 1 : -1;
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const short = ATTRS.AGENT_LINE['stroke-width'];
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let y = this.currentY;
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const lineAttrs = {
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'solid': ATTRS.CONNECT_LINE_SOLID,
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'dash': ATTRS.CONNECT_LINE_DASH,
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};
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if(label) {
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const mask = makeSVGNode('rect', ATTRS.CONNECT_LABEL_MASK);
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const labelNode = makeSVGNode('text', ATTRS.CONNECT_LABEL);
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labelNode.appendChild(makeText(label));
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const sz = ATTRS.CONNECT_LABEL['font-size'];
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this.actions.appendChild(mask);
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this.actions.appendChild(labelNode);
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y += Math.max(
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dy,
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CONNECT_LABEL_MARGIN_TOP +
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sz * LINE_HEIGHT +
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CONNECT_LABEL_MARGIN_BOTTOM
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);
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const w = labelNode.getComputedTextLength();
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const x = (from.x + to.x) / 2;
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const yBase = (
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y -
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sz * (LINE_HEIGHT - 1) -
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CONNECT_LABEL_MARGIN_BOTTOM
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);
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labelNode.setAttribute('x', x);
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labelNode.setAttribute('y', yBase);
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mask.setAttribute('x', x - w / 2 - CONNECT_LABEL_MASK_PADDING);
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mask.setAttribute('y', yBase - sz);
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mask.setAttribute('width', w + CONNECT_LABEL_MASK_PADDING * 2);
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mask.setAttribute('height', sz * LINE_HEIGHT);
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} else {
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y += dy;
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}
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this.actions.appendChild(makeSVGNode('path', Object.assign({
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'd': (
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'M ' + (from.x + (left ? short : 0) * dir) + ' ' + y +
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' L ' + (to.x - (right ? short : 0) * dir) + ' ' + y
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),
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}, lineAttrs[line])));
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if(left) {
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this.actions.appendChild(makeSVGNode('path', Object.assign({
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'd': (
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'M ' + (from.x + (dx + short) * dir) + ' ' + (y - dy) +
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' L ' + (from.x + short * dir) + ' ' + y +
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' L ' + (from.x + (dx + short) * dir) + ' ' + (y + dy) +
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(ATTRS.CONNECT_HEAD.fill === 'none' ? '' : ' Z')
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),
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}, ATTRS.CONNECT_HEAD)));
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}
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if(right) {
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this.actions.appendChild(makeSVGNode('path', Object.assign({
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'd': (
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'M ' + (to.x - (dx + short) * dir) + ' ' + (y - dy) +
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' L ' + (to.x - short * dir) + ' ' + y +
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' L ' + (to.x - (dx + short) * dir) + ' ' + (y + dy) +
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(ATTRS.CONNECT_HEAD.fill === 'none' ? '' : ' Z')
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),
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}, ATTRS.CONNECT_HEAD)));
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}
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this.currentY = y + dy + ACTION_MARGIN;
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}
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renderBlock(/*agentInfos, stage*/) {
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// TODO
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}
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renderNoteOver(/*agentInfos, stage*/) {
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// TODO
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}
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renderNoteLeft(/*agentInfos, stage*/) {
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// TODO
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}
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renderNoteRight(/*agentInfos, stage*/) {
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// TODO
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}
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renderNoteBetween(/*agentInfos, stage*/) {
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// TODO
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}
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addAction(agentInfos, stage) {
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this.renderAction[stage.type](agentInfos, stage);
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}
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makeTextTester(attrs) {
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const text = makeText();
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const node = makeSVGNode('text', attrs);
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node.appendChild(text);
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this.agentDecor.appendChild(node);
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return {text, node};
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}
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testTextWidth(tester, text) {
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tester.text.nodeValue = text;
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return tester.node.getComputedTextLength();
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}
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removeTextTester(tester) {
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this.agentDecor.removeChild(tester.node);
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}
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buildAgentInfos(agents, stages) {
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const testNameWidth = this.makeTextTester(ATTRS.AGENT_BOX_LABEL);
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const agentInfos = new Map();
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agents.forEach((agent) => {
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agentInfos.set(agent, {
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label: agent,
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labelWidth: (
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this.testTextWidth(testNameWidth, agent) +
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BOX_PADDING * 2
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),
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x: null,
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latestYStart: null,
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separations: new Map(),
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});
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});
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agentInfos.get('[').labelWidth = 0;
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agentInfos.get(']').labelWidth = 0;
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this.removeTextTester(testNameWidth);
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this.testConnectWidth = this.makeTextTester(ATTRS.CONNECT_LABEL);
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this.visibleAgents = ['[', ']'];
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traverse(stages, this.checkSeparation.bind(this, agentInfos));
|
|
this.removeTextTester(this.testConnectWidth);
|
|
|
|
let currentX = 0;
|
|
agents.forEach((agent) => {
|
|
const agentInfo = agentInfos.get(agent);
|
|
agentInfo.separations.forEach((dist, otherAgent) => {
|
|
const otherAgentInfo = agentInfos.get(otherAgent);
|
|
if(otherAgentInfo.x !== null) {
|
|
currentX = Math.max(currentX, otherAgentInfo.x + dist);
|
|
}
|
|
});
|
|
agentInfo.x = currentX;
|
|
});
|
|
|
|
return {agentInfos, minX: 0, maxX: currentX};
|
|
}
|
|
|
|
updateBounds(stagesHeight) {
|
|
const titleWidth = this.title.getComputedTextLength();
|
|
const stagesWidth = (this.maxX - this.minX);
|
|
|
|
const width = Math.ceil(
|
|
Math.max(stagesWidth, titleWidth) +
|
|
OUTER_MARGIN * 2
|
|
);
|
|
const height = Math.ceil(
|
|
ATTRS.TITLE['font-size'] * LINE_HEIGHT +
|
|
TITLE_MARGIN +
|
|
stagesHeight +
|
|
OUTER_MARGIN * 2
|
|
);
|
|
|
|
this.diagram.setAttribute('transform',
|
|
'translate(' + ((width - stagesWidth) / 2 - this.minX) + ',' + (
|
|
OUTER_MARGIN +
|
|
ATTRS.TITLE['font-size'] * LINE_HEIGHT +
|
|
TITLE_MARGIN
|
|
) + ')'
|
|
);
|
|
|
|
this.title.setAttribute('x', width / 2);
|
|
this.base.setAttribute('viewBox', '0 0 ' + width + ' ' + height);
|
|
this.width = width;
|
|
this.height = height;
|
|
}
|
|
|
|
render({meta, agents, stages}) {
|
|
empty(this.agentLines);
|
|
empty(this.agentDecor);
|
|
empty(this.actions);
|
|
|
|
this.titleText.nodeValue = meta.title || '';
|
|
|
|
const info = this.buildAgentInfos(agents, stages);
|
|
|
|
this.minX = info.minX;
|
|
this.maxX = info.maxX;
|
|
this.currentY = 0;
|
|
|
|
traverse(stages, this.addAction.bind(this, info.agentInfos));
|
|
|
|
this.updateBounds(Math.max(this.currentY - ACTION_MARGIN, 0));
|
|
}
|
|
|
|
svg() {
|
|
return this.base;
|
|
}
|
|
};
|
|
});
|