Method intersectRects

packages/fairygui/src/render/RenderBridge.ts:297–309

(a: IRectangle, b: IRectangle)

    }

    private intersectRects(a: IRectangle, b: IRectangle): IRectangle {
        const x = Math.max(a.x, b.x);
        const y = Math.max(a.y, b.y);
        const right = Math.min(a.x + a.width, b.x + b.width);
        const bottom = Math.min(a.y + a.height, b.y + b.height);

        return {
            x,
            y,
            width: Math.max(0, right - x),
            height: Math.max(0, bottom - y)
        };
    }
}