Version 5.0 The LEDA User Manual

template
bool GW.get obj text(GeoBaseScene ∗ sc, typename T :: iterator it,
geowin text& gt)
Gets the text associated with the object it points to
and assigns it to gt. If no text is associated with the
object, false will be returned, otherwise true.
template
void GW.set obj text(GeoBaseScene ∗ sc, void ∗ adr, const geowin text& gt)
Assigns gt to the object at adr in scene sc.
template
void GW.set obj text(GeoBaseScene ∗ sc, typename T :: iterator it,
const geowin text& gt)
Assigns gt to the object it points to in scene sc.
template
void GW.reset obj attributes(GeoBaseScene ∗ sc)
d) Input and Output Operations
deletes all individual attributes of objects in scene
(∗sc).
void
void
void
GW.read(geo scene sc, istream& is)
GW.write(geo scene sc, ostream& os)
GW.write active scene(ostream& os)
reads the contents of sc from input stream is. Before
the contents of sc is cleared.
writes the contents of sc to output stream os.
writes the contents of the active scene of GW to output
stream os.
e) View Operations
void GW.zoom up( ) The visible range is reduced to the half.
void GW.zoom down( ) The visible range is doubled.
void GW.fill window( ) changes window coordinate system, so that the objects
of the currently active scene fill the window.
void GW.reset window( ) resets the visible range to the values that where current
when constructing GW .
f) Parameter Operations
The following operations allow the set and retrieve the various parameters of GeoWin.