/trunk/Examples/lua/owner/example.cxx
C++ | 69 lines | 53 code | 14 blank | 2 comment | 5 complexity | 8544e25cbe19bdb7e9061881b73d58aa MD5 | raw file
Possible License(s): LGPL-2.1, Cube, GPL-3.0, 0BSD, GPL-2.0
- /* File : example.c */
-
- #include "example.h"
- #include <stdio.h>
-
- #define M_PI 3.14159265358979323846
-
- /* Move the shape to a new location */
- void Shape::move(double dx, double dy) {
- x += dx;
- y += dy;
- }
-
- int Shape::nshapes = 0;
-
- double Circle::area(void) {
- return M_PI*radius*radius;
- }
-
- double Circle::perimeter(void) {
- return 2*M_PI*radius;
- }
-
- double Square::area(void) {
- return width*width;
- }
-
- double Square::perimeter(void) {
- return 4*width;
- }
-
- Circle* createCircle(double w)
- {
- return new Circle(w);
- }
-
- Square* createSquare(double w)
- {
- return new Square(w);
- }
-
- ShapeOwner::ShapeOwner() {printf(" ShapeOwner(%p)\n",this);}
- ShapeOwner::~ShapeOwner()
- {
- printf(" ~ShapeOwner(%p)\n",this);
- for(unsigned i=0;i<shapes.size();i++)
- delete shapes[i];
- }
-
- void ShapeOwner::add(Shape* ptr) // this method takes ownership of the object
- {
- shapes.push_back(ptr);
- }
-
- Shape* ShapeOwner::get(int idx) // this pointer is still owned by the class (assessor)
- {
- if (idx < 0 || idx >= static_cast<int>(shapes.size()))
- return NULL;
- return shapes[idx];
- }
-
- Shape* ShapeOwner::remove(int idx) // this method returns memory which must be deleted
- {
- if (idx < 0 || idx >= static_cast<int>(shapes.size()))
- return NULL;
- Shape* ptr=shapes[idx];
- shapes.erase(shapes.begin()+idx);
- return ptr;
- }