 Allegro 5.0 - Lab for Add Arc by Radius

   The purpose of this lab is to become familiar with Adding Arcs by Radius.  For Allegro 5.0, the arc endpoint is determined by angle, not xy-pick.

 1) Select  Add > Arc by Radius  command.

 2) Set the Ministatus Lock Angle to 45 degrees.

 3) Pick the arc CENTER point at location "x 4000 y 4000".

 4) Pick arc START point at location "x 4000 y 4700".  Note that these first two picks establish the arc radius which is then displayed on the command line.

 5) Move cursor clockwise and counter-clockwise observing arc dynamics, angle-lock increments, and angle readout in XY Status box.

 6) Change Ministatus "Lock Angle" to 0 and note that angle increments are at a resolution of .001 degrees.

 7) Pick an arbitrary END point location to establish arc segment.

 8) Press <F1> to continue to next frame ...
