ImageGear .NET v25.2 - Updated
Polyline Ruler
Developer Guide > How to Work with... > ART Mark Annotations > ART Annotations > ART 3.0, ART 2.0 Marks > Measurement Marks > Polyline Ruler

 

The Polyline Ruler mark enables the end user to create a polyline (several connected straight lines) that displays its total length.

Edit Mode

In Edit mode, end users create this mark as follows:

  1. Click the Polyline Ruler button.
  2. Click at the point where the polyline ruler starts.
  3. Drag to the location of a vertice and click to create the vertice.
  4. Drag and click to create each additional vertice.
  5. Double-click the location where the polyline ruler ends.
  6. Right-click the mark after it is created to activate the popup Edit menu.   

Polyline Ruler Length Measuring Modes

ImageGear provides two different length measuring modes for Ruler and PolyRuler annotations – Absolute and Relative, which can be changed using ImGearARTPage.AspectKind property.

If the physical measurements of your marks need to reflect the changes to the resolution of the underlying image, you should work with pages and marks in Relative mode instead.

If the physical measurements of your marks need to remain constant regardless of the resolution of the underlying image, you should work with pages and marks in Absolute mode instead.

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