Pitney Bowes MapXtreme User Manual
Page 422
Chapter 23: Workspace Manager
Layer Control
MapXtreme v7.1
429
Developer Guide
The Snap Tolerance setting specifies how far the tools will search for “snappable” nodes. You can
choose which layers use the Snap to Node feature. For example, you might want to turn on Snap To
Node, but only have the snap crosshair appear when the cursor is near a feature in a particular
layer. To turn the Snap To Node feature on or off for a specific layer, select the layer in the layer tree,
then select or clear the Snap To Node check box in the Options tab.
The Dynamic Selection Tools check box controls whether features are selected immediately (while
you are using the selection tool) or selected when you release the mouse button to finish using the
selection tool:
If the Dynamic Selection Tools check box is not selected, selection tools do not actually select any
features on the map until you finish using the tool. For example, the Radius Select tool will not select
any features until you specify a radius and release the mouse button.
If the Dynamic Selection Tools check box is selected, features become selected or de-selected
dynamically as you drag the mouse. For example, if you use the Radius Select tool, you will see
more features become selected as you drag the mouse to enlarge the radius.
Style
The options in the Style tab enable you to control translucency and anti-aliasing properties.
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Use Anti-Aliasing–Use this option to smooth jagged edges of lines, curves, and region borders
when representing a high-definition rendition at a lower resolution. When you select Use
Anti-Aliasing, Enable Translucency is also selected automatically. Whenever Enable
Translucency is deselected, Use Anti-Aliasing is automatically deselected.
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Enable Translucency–Use this option to allow translucent values in style colors and layers
when drawing the map onto the screen, printer, or file export. When translucency is enabled, you
can use the translucency trackbar in style dialogs.
This property has no effect on raster translucency; however, Enable Translucency must be
selected to print translucent raster images.
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Rendering higher quality maps by enabling translucency and anti-aliasing, particularly in a
map with three or more transparent layers, will often result in a slower rendering speed.
For more information on anti-aliasing and translucency, see