hit-test-rectangle.ts

/*
 * Copyright (C) 2019 Toshiba Corporation
 * SPDX-License-Identifier: Apache-2.0
 */

import { EShape } from "../e-shape";
import { EShapeStrokeSide } from "../e-shape-stroke-side";
import { hitTestBBox } from "./hit-test-bbox";

export const hitTestRectangle = (
	shape: EShape,
	x: number,
	y: number,
	ax: number,
	ay: number,
	sw: number,
	ss: number
): boolean => {
	if (hitTestBBox(x, y, ax, ay)) {
		const fill = shape.fill;
		if (fill.enable) {
			return true;
		} else {
			const strokeSide = shape.stroke.side;
			if (0 < sw && strokeSide !== EShapeStrokeSide.NONE) {
				const s = sw * ss;
				const wx = Math.max(0.0, ax - s);
				const wy = Math.max(0.0, ay - s);
				if (!hitTestBBox(x, y, wx, wy)) {
					if (strokeSide === EShapeStrokeSide.ALL) {
						return true;
					} else {
						if (x <= -wx) {
							if (y <= -wy) {
								return !!(strokeSide & EShapeStrokeSide.TOP_OR_LEFT);
							} else if (+wy <= y) {
								return !!(strokeSide & EShapeStrokeSide.BOTTOM_OR_LEFT);
							} else {
								return !!(strokeSide & EShapeStrokeSide.LEFT);
							}
						} else if (+wx <= x) {
							if (y <= -wy) {
								return !!(strokeSide & EShapeStrokeSide.TOP_OR_RIGHT);
							} else if (+wy <= y) {
								return !!(strokeSide & EShapeStrokeSide.BOTTOM_OR_RIGHT);
							} else {
								return !!(strokeSide & EShapeStrokeSide.RIGHT);
							}
						} else {
							if (y <= -wy) {
								return !!(strokeSide & EShapeStrokeSide.TOP);
							} else if (+wy <= y) {
								return !!(strokeSide & EShapeStrokeSide.BOTTOM);
							} else {
								return false;
							}
						}
					}
				}
			}
		}
	}
	return false;
};