java coding help - Polygon ROI

Posted by Kenneth Sloan-2 on Oct 25, 2017; 10:35pm
URL: http://imagej.273.s1.nabble.com/java-coding-help-Polygon-ROI-tp5019604.html

Java plugin - I’m prompting the user to create POINT and POLYGON ROIs.

 For POINT ROI, this seems to work just fine:

     IJ.setTool("multipoint");
     WaitForUserDialog wfudOCT = new WaitForUserDialog("select three (3) landmarks in OCT; then click OK");
     wfudOCT.show();
     Roi octLMROI = octIPlus.getRoi();
     Polygon octLMPolygon = octLMROI.getPolygon();


But, for POLYGON ROI, this very similar code fails:
     IJ.setTool("polygon");
     WaitForUserDialog wfudOCT = new WaitForUserDialog("select Polygon in OCT; then click OK");
     wfudOCT.show();
     Roi octPolyROI = octIPlus.getRoi();
     Polygon octPolygon = octPolyROI.getPolygon();

In the second case, octPolyROI is null.  The user has drawn a polygon (and completed it) and then clicks on “OK” in the dialog box.  The polygon is displayed on the image (with the verticies minimized)


What am I doing wrong?

I do notice that there’s a difference in how the “multipoint” and “Polygon selections” are presented in the
ImageJ toolbar.

If it matters, this is running under FIJI, latest version.

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Kenneth Sloan
[hidden email] <mailto:[hidden email]>
Vision is the art of seeing what is invisible to others.





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