gojs/extensionsJSM/RoundedRectangles.js

/*
*  Copyright (C) 1998-2021 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 extensionsTS 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 two useful figures: "RoundedTopRectangle" and "RoundedBottomRectangle".
// These are demonstrated at ../samples/twoHalves.html and ../samples/roundedGroups.html.
go.Shape.defineFigureGenerator('RoundedTopRectangle', function (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 / 2);
    p1 = Math.min(p1, h / 2); // limit by whole height or by half height?
    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', function (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 / 2);
    p1 = Math.min(p1, h / 2); // limit by whole height or by half height?
    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;
});