Function subtractSize

subtractSize(
    a: Geometry.RectPositioned,
    b: number | Geometry.Rect,
    c?: number,
): Geometry.RectPositioned
Subtracts a width & height from a. Leaves x & y as-is.
```
const rect = { x: 10, y: 20, width: 100, height: 200 };
subtractSize(rect, { width: 50, height: 100 });
subtractSize(rec, 50, 100);
// Both yields: { x:10, y: 20, width: 50, height: 100 }
```
Parameters
- a: Geometry.RectPositioned
  Rectangle
- b: number | Geometry.Rect
  Rectangle to subtract by, or width
- Optionalc: number
  Height, if second parameter is width
Returns Geometry.RectPositioned
subtractSize(
    a: Geometry.Rect,
    b: number | Geometry.Rect,
    c?: number,
): Geometry.Rect
Subtracts a width & height from a.
```
const rect = { width: 100, height: 200 };
subtractSize(rect, { width: 50, height: 100 });
subtractSize(rec, 50, 100);
// Both yields: { width: 50, height: 100 }
```
Parameters
- a: Geometry.Rect
  Rectangle
- b: number | Geometry.Rect
  Rectangle to subtract by, or width
- Optionalc: number
  Height, if second parameter is width
Returns Geometry.Rect