Strokes.GetBoundingBox Method
Strokes.GetBoundingBox Method |
Returns the bounding Rectangle that contains the Strokes collection.
Overload List
public Rectangle GetBoundingBox() public Rectangle GetBoundingBox(BoundingBoxMode)
Remarks
The bounding Rectangle is in ink space coordinates.
The bounding Rectangle corresponds to the portion of the display to invalidate or redraw when displaying a Strokes collection.
When the bounding box is affected by the pen width, then this width is scaled appropriately for the Renderer object's view transform. To do this, the pen width is multiplied by the square root of the determinant of the view transform.
Note: If you have not set the pen width explicitly, it is 53 by default. You must multiply the pen width by the square root of the determinant to yield the correct bounding box. The height and width of the bounding box are expanded by half this amount in each direction. For example, consider that the pen width is
53
, the square root of the determinant is50
, and the bounding box is(0, 0, 1000, 1000)
. The pen width adjustment to the bounding box in each direction is calculated as(53 * 50) / 2
, and the right and bottom sides are incremented by one. This results in a rendered bounding box of(-1325, -1325, 2326, 2326)
.Note: The bounding Rectangle that this method returns is a copy of the bounding box of the Strokes collection. Altering the Rectangle that this method returns has no affect on the bounding box of the original Strokes collection.
Examples
See Also