bionic (3) PolygonComp.3U.gz

NAME

       PolygonComp,   PolygonView,  PSPolygon  -  polygon  component  subject,  view,  and  PostScript  external
       representation

SYNOPSIS

       #include <Unidraw/Components/polygon.h>

DESCRIPTION

       PolygonComp is a VerticesComp that defines a polygon.   It  uses  an  SF_Polygon  graphic  to  store  its
       graphical  attributes.   PolygonView  is  a  VerticesView  for  displaying  the  polygon.  PSPolygon is a
       PSVertices that externalizes the subject's information in PostScript form.

POLYGONCOMP PUBLIC OPERATIONS

       PolygonComp(SF_Polygon* = nil)
              The constructor takes an optional stroked-filled polygon graphic that defines  the  attributes  of
              the polygon.

       SF_Polygon* GetPolygon()
              Return  the  Polygon  graphic  that defines the polygon's attributes.  GetPolygon is simply a more
              specific form of the GetGraphic operation.

POLYGONVIEW PUBLIC OPERATIONS

       PolygonView(PolygonComp* = nil)
              Create an PolygonView, optionally supplying the subject.

       virtual Manipulator* CreateManipulator(
          Viewer*, Event&, Transformer*, Tool*
       )

       virtual void InterpretManipulator(Manipulator*)
              PolygonView redefines its response to manipulation with a GraphicCompTool.  The  user  clicks  the
              left  mouse  button  to specify each vertex and clicks with the middle mouse button to specify the
              final vertex.  Vertex positioning will be  constrained  by  gravity,  if  any.   PolygonView  also
              defines  a  response  to  the  ReshapeTool,  allowing  the user to click on one of its vertices to
              reposition it.  The subject is actually replaced (via ReplaceCmd) with a new  PolygonComp  subject
              reflecting the repositioned vertex.  Repositioning will be influenced by gravity.

       PolygonComp* GetPolygonComp()
              Return the subject.

PSPOLYGON PUBLIC OPERATIONS

       PSPolygon(PolygonComp* = nil)
              Construct a PostScript external representation of the given subject, if any.

PSPOLYGON PROTECTED OPERATIONS

       virtual const char* Name()
              PSPolygon identifies itself as "Poly" in the PostScript output.

SEE ALSO

       Event(3I),    GraphicComp(3U),    GraphicCompTool(3U),    GraphicView(3U),    Grid(3U),   PatternCmd(3U),
       PostScriptView(3U),  ReshapeTool(3U),   Rubband(3I),   Transformer(3I),   VerticesComp(3U),   Viewer(3U),
       align(3U), edit(3U), polygons(3U)