# file: example.pl # This file illustrates the low-level C++ interface # created by SWIG. In this case, all of our C++ classes # get converted into function calls. use example; # ----- Object creation ----- print "Creating some objects:\n"; $c = example::new_Circle(10); print " Created circle $c\n"; $s = example::new_Square(10); print " Created square $s\n"; # ----- Access a static member ----- print "\nA total of $example::Shape_nshapes shapes were created\n"; # ----- Member data access ----- # Set the location of the object. # Note: methods in the base class Shape are used since # x and y are defined there. example::Shape_x_set($c, 20); example::Shape_y_set($c, 30); example::Shape_x_set($s,-10); example::Shape_y_set($s,5); print "\nHere is their current position:\n"; print " Circle = (",example::Shape_x_get($c),",", example::Shape_y_get($c),")\n"; print " Square = (",example::Shape_x_get($s),",", example::Shape_y_get($s),")\n"; # ----- Call some methods ----- print "\nHere are some properties of the shapes:\n"; foreach $o ($c,$s) { print " $o\n"; print " area = ", example::Shape_area($o), "\n"; print " perimeter = ", example::Shape_perimeter($o), "\n"; } # Notice how the Shape_area() and Shape_perimeter() functions really # invoke the appropriate virtual method on each object. # ----- Delete everything ----- print "\nGuess I'll clean up now\n"; # Note: this invokes the virtual destructor example::delete_Shape($c); example::delete_Shape($s); print $example::Shape_nshapes," shapes remain\n"; print "Goodbye\n";