gojs/extensionsJSM/RoundedRectangles.js

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

/*
*  Copyright (C) 1998-2023 by Northwoods Software Corporation. All Rights Reserved.
*/
/*
* This is an extension and not part of the main GoJS library.
* Note that the API for this class may change with any version, even point releases.
* If you intend to use an extension in production, you should copy the code to your own source directory.
* Extensions can be found in the GoJS kit under the extensions or extensionsJSM folders.
* See the Extensions intro page (https://gojs.net/latest/intro/extensions.html) for more information.
*/
import * as go from '../release/go-module.js';
// This file holds the definitions of several useful figures with rounded corners but straight sides:
// "RoundedTopRectangle", "RoundedBottomRectangle", "RoundedLeftRectangle", "RoundedRightRectangle",
// "CapsuleH", and "CapsuleV".
// The basic "RoundedRectangle" (corners on all four sides) is built into the GoJS library --
// you can see its definition in Figures.js.
// Two of these are demonstrated at ../samples/twoHalves.html and ../samples/roundedGroups.html.
go.Shape.defineFigureGenerator("RoundedTopRectangle", (shape, w, h) => {
    // this figure takes one parameter, the size of the corner
    let p1 = 5; // default corner size
    if (shape !== null) {
        const param1 = shape.parameter1;
        if (!isNaN(param1) && param1 >= 0)
            p1 = param1; // can't be negative or NaN
    }
    p1 = Math.min(p1, w / 3); // limit by width & height
    p1 = Math.min(p1, h);
    const geo = new go.Geometry();
    // a single figure consisting of straight lines and quarter-circle arcs
    geo.add(new go.PathFigure(0, p1)
        .add(new go.PathSegment(go.PathSegment.Arc, 180, 90, p1, p1, p1, p1))
        .add(new go.PathSegment(go.PathSegment.Line, w - p1, 0))
        .add(new go.PathSegment(go.PathSegment.Arc, 270, 90, w - p1, p1, p1, p1))
        .add(new go.PathSegment(go.PathSegment.Line, w, h))
        .add(new go.PathSegment(go.PathSegment.Line, 0, h).close()));
    // don't intersect with two top corners when used in an "Auto" Panel
    geo.spot1 = new go.Spot(0, 0, 0.3 * p1, 0.3 * p1);
    geo.spot2 = new go.Spot(1, 1, -0.3 * p1, 0);
    return geo;
});
go.Shape.defineFigureGenerator("RoundedBottomRectangle", (shape, w, h) => {
    // this figure takes one parameter, the size of the corner
    let p1 = 5; // default corner size
    if (shape !== null) {
        var param1 = shape.parameter1;
        if (!isNaN(param1) && param1 >= 0)
            p1 = param1; // can't be negative or NaN
    }
    p1 = Math.min(p1, w / 3); // limit by width & height
    p1 = Math.min(p1, h);
    const geo = new go.Geometry();
    // a single figure consisting of straight lines and quarter-circle arcs
    geo.add(new go.PathFigure(0, 0)
        .add(new go.PathSegment(go.PathSegment.Line, w, 0))
        .add(new go.PathSegment(go.PathSegment.Line, w, h - p1))
        .add(new go.PathSegment(go.PathSegment.Arc, 0, 90, w - p1, h - p1, p1, p1))
        .add(new go.PathSegment(go.PathSegment.Line, p1, h))
        .add(new go.PathSegment(go.PathSegment.Arc, 90, 90, p1, h - p1, p1, p1).close()));
    // don't intersect with two bottom corners when used in an "Auto" Panel
    geo.spot1 = new go.Spot(0, 0, 0.3 * p1, 0);
    geo.spot2 = new go.Spot(1, 1, -0.3 * p1, -0.3 * p1);
    return geo;
});
go.Shape.defineFigureGenerator("RoundedLeftRectangle", (shape, w, h) => {
    // this figure takes one parameter, the size of the corner
    let p1 = 5; // default corner size
    if (shape !== null) {
        var param1 = shape.parameter1;
        if (!isNaN(param1) && param1 >= 0)
            p1 = param1; // can't be negative or NaN
    }
    p1 = Math.min(p1, w); // limit by width & height
    p1 = Math.min(p1, h / 3);
    const geo = new go.Geometry();
    // a single figure consisting of straight lines and quarter-circle arcs
    geo.add(new go.PathFigure(w, 0)
        .add(new go.PathSegment(go.PathSegment.Line, w, h))
        .add(new go.PathSegment(go.PathSegment.Line, p1, h))
        .add(new go.PathSegment(go.PathSegment.Arc, 90, 90, p1, h - p1, p1, p1))
        .add(new go.PathSegment(go.PathSegment.Line, 0, p1))
        .add(new go.PathSegment(go.PathSegment.Arc, 180, 90, p1, p1, p1, p1).close()));
    // don't intersect with two top corners when used in an "Auto" Panel
    geo.spot1 = new go.Spot(0, 0, 0.3 * p1, 0.3 * p1);
    geo.spot2 = new go.Spot(1, 1, -0.3 * p1, 0);
    return geo;
});
go.Shape.defineFigureGenerator("RoundedRightRectangle", (shape, w, h) => {
    // this figure takes one parameter, the size of the corner
    let p1 = 5; // default corner size
    if (shape !== null) {
        var param1 = shape.parameter1;
        if (!isNaN(param1) && param1 >= 0)
            p1 = param1; // can't be negative or NaN
    }
    p1 = Math.min(p1, w); // limit by width & height
    p1 = Math.min(p1, h / 3);
    const geo = new go.Geometry();
    // a single figure consisting of straight lines and quarter-circle arcs
    geo.add(new go.PathFigure(0, 0)
        .add(new go.PathSegment(go.PathSegment.Line, w - p1, 0))
        .add(new go.PathSegment(go.PathSegment.Arc, 270, 90, w - p1, p1, p1, p1))
        .add(new go.PathSegment(go.PathSegment.Line, w, h - p1))
        .add(new go.PathSegment(go.PathSegment.Arc, 0, 90, w - p1, h - p1, p1, p1))
        .add(new go.PathSegment(go.PathSegment.Line, 0, h).close()));
    // don't intersect with two bottom corners when used in an "Auto" Panel
    geo.spot1 = new go.Spot(0, 0, 0.3 * p1, 0);
    geo.spot2 = new go.Spot(1, 1, -0.3 * p1, -0.3 * p1);
    return geo;
});
// these two figures have rounded ends
go.Shape.defineFigureGenerator("CapsuleH", (shape, w, h) => {
    const geo = new go.Geometry();
    if (w < h) {
        const fig = new go.PathFigure(w / 2, 0, true);
        fig.add(new go.PathSegment(go.PathSegment.Bezier, w / 2, h, w, 0, w, h));
        fig.add(new go.PathSegment(go.PathSegment.Bezier, w / 2, 0, 0, h, 0, 0));
        geo.add(fig);
        return geo;
    }
    else {
        const fig = new go.PathFigure(h / 2, 0, true);
        geo.add(fig);
        // Outline
        fig.add(new go.PathSegment(go.PathSegment.Line, w - h / 2, 0));
        fig.add(new go.PathSegment(go.PathSegment.Arc, 270, 180, w - h / 2, h / 2, h / 2, h / 2));
        fig.add(new go.PathSegment(go.PathSegment.Line, w - h / 2, h));
        fig.add(new go.PathSegment(go.PathSegment.Arc, 90, 180, h / 2, h / 2, h / 2, h / 2));
        return geo;
    }
});
go.Shape.defineFigureGenerator("Capsule", "CapsuleH"); // synonym
go.Shape.defineFigureGenerator("CapsuleV", (shape, w, h) => {
    const geo = new go.Geometry();
    if (h < w) {
        const fig = new go.PathFigure(0, h / 2, true);
        fig.add(new go.PathSegment(go.PathSegment.Bezier, w, h / 2, 0, h, w, h));
        fig.add(new go.PathSegment(go.PathSegment.Bezier, 0, h / 2, w, 0, 0, 0));
        geo.add(fig);
        return geo;
    }
    else {
        const fig = new go.PathFigure(0, w / 2, true);
        geo.add(fig);
        // Outline
        fig.add(new go.PathSegment(go.PathSegment.Arc, 180, 180, w / 2, w / 2, w / 2, w / 2));
        fig.add(new go.PathSegment(go.PathSegment.Line, w, h - w / 2));
        fig.add(new go.PathSegment(go.PathSegment.Arc, 0, 180, w / 2, h - w / 2, w / 2, w / 2));
        fig.add(new go.PathSegment(go.PathSegment.Line, 0, w / 2));
        return geo;
    }
});