Function rectInflate

rectInflate(r: Rect, dx: number, dy?: number): Rect
Grow (or shrink, if negative) the rect on every side by dx/dy.
Parameters
- r: Rect
  The rectangle to process.
- dx: number
  The horizontal offset.
- dy: number = dx
  The vertical offset.
Returns Rect
The resulting Rect.
- Defined in packages/viewer-core/src/geometry.ts:192