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DXF Editor: Zoom Options

Within the DXF Editor, there are several ZOOM functions to help the user view various details of the flood profiles. The ZOOM functions can be accessed by buttons located on the Main Toolbar and by the View menu, both of which are shown below.

The following descriptions explain what each ZOOM function is capable of:

Zoom Window

Displays an area specified by two opposite points defining a rectangular window. This allows the user to zoom in to view a specific portion of the flood profile. After clicking on the Zoom Window button, specify the first corner by left-clicking at that point; the user can specify the second corner by left-clicking again at the second point.

Zoom Extents

Displays the drawing extents and results in the largest possible display of all the objects. This allows the user to view all of the flood profiles in that RASPLOT .dxf file at once. Clicking on the Zoom Extents button will automatically zoom out to show the entire drawing extents.

Zoom Previous

Displays the previous view. The user can restore up to 10 previous views. Clicking on the Zoom Previous button will automatically show the previous view.


The Pan option can be used to search for a small detail that is difficult to find in the current view. This option allows the user to move from one profile to another while the view is zoomed in. This view changes dynamically as the user holds down the left mouse button and drags to the specified area.

Zoom In

This command allows the user to view an area at a closer scale. By clicking on the Zoom In button, the picture size automatically zooms in by 10%.

Zoom Out

This command allows the user to view an area from a more distanced scale. By clicking on the Zoom Out button, the picture size automatically zooms out by 10%.

DXF Editor: Snap Options

The Snap function restricts the movement of the crosshairs to intervals that the user defines. When the Snap function is on, the cursor seems to adhere, or "snap," to an invisible grid. The Snap function is a quick way to locate the exact position of an object without knowing the coordinate or drawing construction lines. For example, the user can use the Snap function when selecting the area to be printed. By using the Endpoint Snap, as described below, the exact coordinates of the panel can be printed by selecting the endpoints at the two opposite corners of the flood profile panel.

If AutoSnap is turned on, the DXFEditor displays a yellow marker when the user moves the mouse over a snap point. This feature provides a visual clue that indicates which object snaps are in effect.

There are a variety of ways to turn on the Snap function. If the user chooses an individual Snap tool from the Right Toolbar, the option is only effective for the next point you specify. Also, the user can set the Snap function to remain in effect until it is turned off by double-clicking on the SNAP OFF area at the bottom of the screen. This toggles between ON and OFF.

The following descriptions explain what each SNAP function is capable of:

Snap to Endpoint

Snaps to the endpoint of an object

Snap to Midpoint

Snaps to the midpoint of an object

Snap to Center

Snaps to the center of an object

Snap to Perpendicular

Snaps to the perpendicular point of an object

Snap to Insert Point

Snaps to a point that is created for an existing object

Snap to Nearest

Snaps to the nearest point of an object on the invisible snap grid

Snap to Intersection

Snaps to the intersection of two objects

Snap Clear

Turns off the Snap function

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Last Modified: Tuesday, 26-Jun-2007 11:57:20 EDT