pddl-gantt/dist/SwimLane.js

Plan visualization for AI-Planning plans. The package includes HTML components for Gantt, swimlane and line plot visualization of plan originating from AI Planning solvers.

/* --------------------------------------------------------------------------------------------
 * Copyright (c) Jan Dolejsi 2020. All rights reserved.
 * Licensed under the MIT License. See License.txt in the project root for license information.
 * ------------------------------------------------------------------------------------------ */
'use strict';
Object.defineProperty(exports, "__esModule", { value: true });
exports.SwimLane = void 0;
/**
 * Swim lane visualization for activities that may run in sequence or in parallel.
 * This utility helps placing activities into the lane, so they do not overlap.
 */
class SwimLane {
    /**
     * Constructs the swim lane
     * @param separation separation enforced between bars in the sane lane (default is 0)
     */
    constructor(separation = 0) {
        this.separation = separation;
        /** Lanes and the width at which the last step in each of them ends. */
        this.subLaneEnds = [];
    }
    /**
     * Finds the first available lane that is not already occupied at offset leftOffset
     * @param leftOffset offset from the left for the new step to be placed
     * @param width step width
     */
    placeNext(leftOffset, width) {
        let availableLane = -1;
        for (let index = 0; index < this.subLaneEnds.length; index++) {
            if (this.subLaneEnds[index] + this.separation < leftOffset) {
                availableLane = index;
                break;
            }
        }
        if (availableLane < 0) {
            // no lane was available, must create a new one
            this.subLaneEnds.push(0);
            availableLane = this.subLaneEnds.length - 1;
        }
        // adjust the lane end to the end of the newly placed activity
        this.subLaneEnds[availableLane] = leftOffset + width;
        return availableLane;
    }
    laneCount() {
        return this.subLaneEnds.length;
    }
    laneEnd(idx) {
        if (idx >= this.subLaneEnds.length) {
            throw new Error('Lane does not exist');
        }
        return this.subLaneEnds[idx];
    }
}
exports.SwimLane = SwimLane;
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