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DraftSight Tutorial: Using ETracking and Polar Guides

DraftSight Tutorial: Using ETracking and Polar Guides

16 August, 2010

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Using ETracking and Polar Guides will give you the ability to use the current geometry for reference in the construction of the remainder of your geometry, without the need of adding additional construction geometry.  Using Polar Guides is similar to using the ORTHO function.  With the ORTHO function set to ON, you can draw lines horizontal or vertical, or at 0, 90, 180 and 270 degrees.  Using polar guides is like being able to set the angled (polar) increments to whatever angle you’d like.  So, if you know you’ll be constructing geometry at increments of 45 degrees, you can set the Polar angle to 45 degrees and therefore, you will be able to snap lines at 45, 135, 225 and 315 degrees as well as 0, 90, 180 and 270.  The big difference is when using ORTHO, DraftSight forces you to draw lines either horizontal or vertical.  With Polar Guides, DraftSight will only snap at the specified increments when the Polar Tracking Guide is visible. ETracking is the ability to use ESnap points as reference for geometry construction.  First, you need to have ESnap se to ON for ETracking to work (make sure Snap is OFF) Also, you need to be sure to have your ESnap points set to the functions you will use.  For example, if you wanted to add a circle to the center of a rectangle, you would need to be sure the MIDPOINT ESnap point is set.  When you hover your cursor over the intended reference point an indicator will appear, as well as a tracking guide.  As you move your cursor away from the reference point, the indicator will remain.  You can select a point anywhere along the tracking guide to be sure your geometry will be constructed along that reference.  It is possible to combine two tracking points, and choose their virtual intersection as a reference point, as would be the case of the circle in the center of the rectangle.  Once you have ‘woken up’ one of the reference points and the indicator is visible, move to the second reference point, and hover your cursor over it to ‘wake it up’.  As you move your cursor to the virtual intersection, and BOTH tracking guides appear, select that position and you have selected the center of the rectangle.  When finished be sure to verify the new geometry by adding dimension.

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This post was submitted by Mark Lyons.

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