(Document and Medical Imaging toolkits)
The Curve annotation object (ANNOBJECT_CURVE) is a sequence of points that are joined by cubic polynomials such that adjacent polynomials are continuous at the first and second derivates. The result is a smooth, continuous curve going through all the points.
With the automated functions, each curve is formed with a mouse click, and the object is completed on a double click.
You can change the points using the L_AnnGetPoints and the L_AnnSetPoints functions.
With low-level functions, you must provide the points that define the shape of the object. Other applicable properties have the following defaults, which you can change:
Visible |
Defaults to FALSE. It can be changed using the L_AnnSetVisible function. |
Selected |
Defaults to FALSE. It can be changed using the L_AnnSetSelected function. |
Name |
Defaults to an empty string. It can be changed using the L_AnnSetNameOptions function. |
Line width |
Defaults to 0.75 points. It can be changed using the L_AnnSetLineWidth function. (Note that when displayed, the line must have a minimum width of 1 pixel.) |
Line style |
Defaults to solid. It can be changed using the L_AnnSetLineStyle function. |
ROP2 code |
Defaults to ANNROP2_COPY. It can be changed using the L_AnnSetROP2 function. |
Foreground color |
Defaults to red. It can be changed using the L_AnnSetForeColor function. |
Nodes |
Defaults to displaying every node. It can be changed using the L_AnnSetNodes function. |
Fixed State |
Defaults to not fixed. It can be changed using the L_AnnSetFixed function. |
Hyperlink |
Defaults to None. It can be changed using the L_AnnSetHyperlink function. |
Tag (identifier) |
Defaults to 0. It can be changed using the L_AnnSetTag function. |
Window handle |
Defaults to NULL or the handle inherited from the container. It can be changed for all objects using the L_AnnSetWnd function. |
User mode |
Defaults to design mode or the mode inherited from the container. It can be changed for all objects using the L_AnnSetUserMode function. |
For information on flipping, reversing or rotating annotation objects, refer to Flipping, Reversing and Rotating Annotation Objects.
Related topics:
Low-Level Coordinate System for Annotations.
Annotation Objects - Automated Features.
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