Snap Modes
Snap modes can be viewed and changed in the Snap Setup dialog box (menu Tools). This dialog can be also opened from the cursor menu that appears when right-clicking on any of the snap buttons.
This table provides the names of raster snap modes, which can be used to snap to points of raster objects.
| Name | Description |
|---|---|
| Endpoint | Snap to the objects endpoints (lines, arcs etc.). |
| Midpoint | Snap to the middle of objects (lines, arcs etc.). |
| Centre | Snap to the centre of an arc, circle. |
| Quadrant | Snap to the nearest quadrant (the point located under an angle 0, 90, 180 or 270 degrees from centre) of arc, circle. |
| Nearest | Snap to the point of the object located close to the curser position. |
| Intersection | Snap to the intersections of objects (lines, circles, arcs etc.). |
| Perpendicular | Snap to the point of the object lying perpendicular to another object or to its imaginary extension. |
| Tangent | Snap to the point on an arc or circle belonging to the tangent of another object. |
In some cases when using snap tools, many Nearest points are revealed (since they are the easiest type to find) and these frequently obscure other points. To see more point types (if any) just turn off Nearest.
The WiseImage snapping algorithms can find the Intersection between raster and vector lines as shown in the figure below.
The raster circle is intersected by a vector line. WiseImage finds the Intersection snap (thin cross).
Note that to run this feature both RSNAP and VSNAP must be pressed.
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