@daign/2d-graphics/dist/lib/control-modifiers/orthogonalModifier.js

Two dimensional graphics library that implements the daign-2d-pipeline.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.OrthogonalModifier = void 0;
/**
 * Orthogonal modifier.
 * The point has to be orthogonal to the previous point.
 */
var OrthogonalModifier = /** @class */ (function () {
    /**
     * Constructor.
     */
    function OrthogonalModifier() {
        // Variable to temporarily disable the control modifier.
        this.enabled = true;
    }
    /**
     * Modify the position change that has been requested for a control object.
     * @param updatedPoints - The array of updated points.
     * @param pointIndex - The index of the point that initiated the change.
     * @param controlObject - The corresponding control object.
     * @returns The modified array of points.
     */
    OrthogonalModifier.prototype.modifyPoints = function (updatedPoints, pointIndex, _controlObject) {
        if (!this.enabled) {
            return updatedPoints;
        }
        // The first point can move freely. No change necessary.
        if (pointIndex === 0) {
            return updatedPoints;
        }
        var targetPoint = updatedPoints[pointIndex];
        var previousPoint = updatedPoints[pointIndex - 1];
        var diffHorizontal = Math.abs(targetPoint.x - previousPoint.x);
        var diffVertical = Math.abs(targetPoint.y - previousPoint.y);
        if (diffHorizontal > diffVertical) {
            targetPoint.set(targetPoint.x, previousPoint.y);
        }
        else {
            targetPoint.set(previousPoint.x, targetPoint.y);
        }
        return updatedPoints;
    };
    return OrthogonalModifier;
}());
exports.OrthogonalModifier = OrthogonalModifier;