My thanks to Larry and Sander. You have answered my questions. I will do some research on XOR drawing, and "rubberband" drawing.
Thanks, The Sunburned Surveyor P.S. - You are correct Larry. I will end up subclassing the SelectFeature tool for my Coordinate Selectors. However, I wanted to take a look at CursorTool, AbstractCursorTool, and DragTool, which my classes will also implement or extend via inheritence. On 9/1/06, Larry Becker <[EMAIL PROTECTED]> wrote: > Hi Sunburned, > > I believe that shape is this context is a reference to a Graphics2D > shape. > > XOR drawing is an old trick to erase the previously drawn item when doing > interactive "rubber-band" drawing. It has the property that any value you > XOR with can be restored by a second XOR operation. > > If you are doing selection, I would study the SelectTool. Selection > tools often do XOR drawing to give a visual display of the fence being > dragged around objects. > > regards, > Larry > > > On 8/31/06, Sunburned Surveyor <[EMAIL PROTECTED]> wrote: > > > When the AbstractCursorTool class makes reference to a "Shape", does > it mean the Java Shape object being drawn on the screen? (As an > example, the line drawn on the screen as a user picks points with the > CursorTool that allows the user to create new Features with a > LineString geomtry?) > > If this is the case, am I correct to conclude that not all CursorTool > implementations draw a shape? If I am implementing a CursorTool that > doesn't need to paint graphics on the screen, should I not extend this > class? > > Also, Jon says in his comment near the class declaration that this > class is "A tool that draws an XOR visual indicator. Subclasses need > not keep track of the XOR state of the indicator -- that logic is all > handled by this class. Even if the LayerViewPanel is repainted while > the XOR indicator is on-screen." > > What does Jon mean when he says an "XOR visual indicator"? > > Thanks, > > The Sunburned Surveyor > > ------------------------------------------------------------------------- > Using Tomcat but need to do more? Need to support web services, security? > Get stuff done quickly with pre-integrated technology to make your job > easier > Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > _______________________________________________ > Jump-pilot-devel mailing list > Jump-pilot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel > > > ------------------------------------------------------------------------- > Using Tomcat but need to do more? Need to support web services, security? > Get stuff done quickly with pre-integrated technology to make your job > easier > Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > > _______________________________________________ > Jump-pilot-devel mailing list > Jump-pilot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel > > > ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Jump-pilot-devel mailing list Jump-pilot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
