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// This example illustrates how C++ classes can be used from D using SWIG.
// The D class gets mapped onto the C++ class and behaves as if it is a D class.
module runme;
import std.stdio;
import example;
void main() {
// ----- Object creation -----
writeln( "Creating some objects:" );
{
scope Square s = new Square(10);
scope Circle c = new Circle(10);
// ----- Access a static member -----
writefln( "%s shapes were created.", Shape.nshapes );
// ----- Member data access -----
// Notice how we can do this using functions specific to
// the 'Circle' class.
c.x = 20;
c.y = 30;
// Now use the same functions in the base class
Shape shape = s;
shape.x = -10;
shape.y = 5;
writeln( "\nHere is their current position:" );
writefln( " Circle = ( %s, %s )", c.x, c.y );
writefln( " Square = ( %s, %s )", s.x, s.y );
// ----- Call some methods -----
writeln( "\nHere are some properties of the shapes:" );
Shape[] shapes = [ cast(Shape) c, cast(Shape) s ];
foreach ( currentShape; shapes )
{
writefln( " %s", currentShape.classinfo.name );
writefln( " area = %s", currentShape.area() );
writefln( " perimeter = %s", currentShape.perimeter() );
}
// Notice how the area() and perimeter() functions really
// invoke the appropriate virtual method on each object.
// ----- Delete everything -----
writeln( "\nGuess I'll clean up now:" );
// Note: when this using scope is exited the D destructors are called which
// in turn call the C++ destructors.
}
writefln( "%s shapes remain", Shape.nshapes );
writeln( "\nGoodbye!" );
}
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