Zoom

Most Zoom functions are available on the middle mouse button.
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This includes scroll wheel in and out about the cursor location, pan, zoom in and zoom out, and double click to zoom fit.
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These are described in more detail under mouse operation at the beginning of this manual.
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The Zoom Window command allows the alteration of the magnification and position of the display of the current model, within the displayed extents of the view, by defining the required rectangular zoom window with the selection of two point locations.
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The extents of the window are defined by selecting any two diagonally opposite corner point locations.
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The zoom window is fitted, such that its defined extents appear within the displayed extents of the view.
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You will notice that the current zoom scale is reported in the status line at the bottom of the graphics area.
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If there are multiple views displayed on screen you must first select the view you want to alter.
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The Zoom Scale command allows the alteration of the magnification and position of the display of the current model, within the displayed extents of the view, by specifying the new zoom scale and selecting the new centre of the zoom window.
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The new zoom scale is specified, followed by the selection of a point location to define the new centre of the resultant zoom window.
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The zoom window is then fitted such that its extents appear within the displayed extents of the view.
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A zoom scale specified greater than the current value will enable more of the model to appear within the displayed extents of the view (i.e. a zoom out).
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A zoom scale specified less than the current value will enable less of the model to appear within the displayed extents of the view (i.e. a zoom in).

The Zoom In/Out command allows the alteration of the magnification and position of the display of the current model, within the displayed extents of the view, by applying a specified multiplication factor to the current zoom scale and selecting the new centre of the zoom window.
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The multiplication factor (Zoom In/Out factor) is specified, followed by the selection of a point location to define the new centre of the resultant zoom window.
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The zoom window is then fitted such that its extents appear within the displayed extents of the view.
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A zoom out factor greater than 1 decreases the magnification (i.e. the current zoom scale is multiplied) of the display of the model (i.e. a zoom out).
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However, if the zoom out factor is less than 1, the current zoom scale is effectively divided and the magnification of the display of the model will increase (i.e. a zoom in).

The Zoom Scroll command allows the zoom window, within the displayed extents of the view, to be scrolled across the model with no change in the zoom scale.
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The scroll is performed by selecting two point locations which define the old and new positions of the zoom window respectively (i.e. the zoom window is translated).
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Also be aware that you can dynamically scroll in and out if you have a scroll wheel on your mouse.
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The dynamic scroll operates around the position of the cursor on screen. Move the cursor to the screen position about which you wish your model to move in and out.
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The Zoom Fit command allows the zoom scale to be automatically calculated so as to fit all points in the model within the displayed extents of the view.
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Only the points in the model determine its fit in the zoom window.
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If the points are associated to an entity which extends beyond them (e.g. circles), that portion of the model will not appear within the zoom window.
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If this occurs, use the Zoom Out command to increase the zoom scale.

Allows the user to define what is included in any Zoom Fit operation.

Reverts to the previous Zoom level.