markgojs/extensionsTS/DimensioningScript.ts

Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams

"use strict";
/*
*  Copyright (C) 1998-2019 by Northwoods Software Corporation. All Rights Reserved.
*/

import * as go from "../release/go";
import { DimensioningLink } from "./DimensioningLink";

export function init() {
	if (typeof (<any>window)["goSamples"] === 'function') (<any>window)["goSamples"]();  // init for these samples -- you don't need to call this

	const $ = go.GraphObject.make;

	let myDiagram =
		$(go.Diagram, "myDiagramDiv",
			{
        initialContentAlignment: go.Spot.Center,
			  "undoManager.isEnabled": true
			});

	// A simple resizable node
	myDiagram.nodeTemplate =
		$(go.Node, "Auto",
			{ locationSpot: go.Spot.Center },
			new go.Binding("location", "loc", go.Point.parse).makeTwoWay(go.Point.stringify),
			{ resizable: true },
			$(go.Shape, { strokeWidth: 0, fill: "lightgray" },
				new go.Binding("fill", "color")),
			$(go.TextBlock, { margin: 10 },
				new go.Binding("text", "key"))
		);

	// A generalized example template using a DimensioningLink.
	// Most usage might not have so many Bindings.
	myDiagram.linkTemplateMap.add("Dimensioning",
		$(DimensioningLink,
			new go.Binding("fromSpot", "fromSpot", go.Spot.parse),
			new go.Binding("toSpot", "toSpot", go.Spot.parse),
			new go.Binding("direction"),
			new go.Binding("extension"),
			new go.Binding("inset"),
			$(go.Shape, { stroke: "gray" },
				new go.Binding("stroke", "color")),
			$(go.Shape, { fromArrow: "BackwardOpenTriangle", segmentIndex: 2, stroke: "gray" },
				new go.Binding("stroke", "color")),
			$(go.Shape, { toArrow: "OpenTriangle", segmentIndex: -3, stroke: "gray" },
				new go.Binding("stroke", "color")),
			$(go.TextBlock,
				{
					segmentIndex: 2,
					segmentFraction: 0.5,
					segmentOrientation: go.Link.OrientUpright,
					alignmentFocus: go.Spot.Bottom,
					stroke: "gray",
					font: "8pt sans-serif"
				},
				new go.Binding("text", "", showDistance).ofObject(),
				new go.Binding("stroke", "color"))
		));

	// Return a string representing the distance between the two points.
	// This is the cartesian distance if this.direction is NaN;
	// otherwise it is the orthogonal distance along that axis.
	function showDistance(link: go.Link) {
		var numpts = link.pointsCount;
		if (numpts < 2) return "";
		var p0 = link.getPoint(0);
		var pn = link.getPoint(numpts - 1);
		var ang = (<any>link).direction;
		if (isNaN(ang)) return Math.floor(Math.sqrt(p0.distanceSquaredPoint(pn))) + "";
		var rad = ang * Math.PI / 180;
		return Math.floor(Math.abs(Math.cos(rad) * (p0.x - pn.x)) +
			Math.abs(Math.sin(rad) * (p0.y - pn.y))) + "";
	}

	myDiagram.model = new go.GraphLinksModel([
		{ key: "Alpha", loc: "0 50" },
		{ key: "Beta", loc: "150 0" },
		{ key: "Gamma", loc: "100 150" }
	], [
			{
				from: "Alpha", to: "Beta", category: "Dimensioning",
				fromSpot: "TopRight", toSpot: "TopLeft"
			},
			{
				from: "Alpha", to: "Beta", category: "Dimensioning",
				fromSpot: "TopLeft", toSpot: "TopRight", extension: 50, color: "blue"
			},
			{
				from: "Alpha", to: "Beta", category: "Dimensioning",
				fromSpot: "TopLeft", toSpot: "TopLeft", direction: 270, color: "green"
			},
			{
				from: "Alpha", to: "Beta", category: "Dimensioning",
				fromSpot: "BottomRight", toSpot: "BottomRight", direction: 90, color: "purple"
			},
			{
				from: "Alpha", to: "Beta", category: "Dimensioning",
				fromSpot: "Center", toSpot: "Center", extension: 50, direction: NaN, color: "red"
			},

			{
				from: "Gamma", to: "Gamma", category: "Dimensioning",
				fromSpot: "TopLeft", toSpot: "TopRight", direction: 0
			},
			{
				from: "Gamma", to: "Gamma", category: "Dimensioning",
				fromSpot: "TopRight", toSpot: "BottomRight", direction: 90
			},
			{
				from: "Gamma", to: "Gamma", category: "Dimensioning",
				fromSpot: "BottomRight", toSpot: "BottomLeft", direction: 180
			},
			{
				from: "Gamma", to: "Gamma", category: "Dimensioning",
				fromSpot: "BottomLeft", toSpot: "TopLeft", direction: 270
			}
		]);
}