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| author | _Tradam <[email protected]> | 2023-09-08 01:29:47 +0000 |
|---|---|---|
| committer | GitHub <[email protected]> | 2023-09-08 01:29:47 +0000 |
| commit | 3c76c7f3d5db3f9586a90d03f8fbb02d79de9acd (patch) | |
| tree | afbe4b540967223911f7c5de36559b82154f02f3 /misc/examples/shape.cpp | |
| parent | 0841165881871ee01b782129be681209aeed2423 (diff) | |
| parent | 1a72205fe05c2375cfd380dd8381a8460d9ed8d1 (diff) | |
| download | STC-modified-modified.tar.gz STC-modified-modified.zip | |
Diffstat (limited to 'misc/examples/shape.cpp')
| -rw-r--r-- | misc/examples/shape.cpp | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/misc/examples/shape.cpp b/misc/examples/shape.cpp deleted file mode 100644 index ea1f53d2..00000000 --- a/misc/examples/shape.cpp +++ /dev/null @@ -1,122 +0,0 @@ -// Demo of polymorphism in C++ - -#include <iostream> -#include <memory> -#include <vector> - -// Shape definition -// ============================================================ - -struct Point { - float x, y; -}; - -std::ostream& operator<<(std::ostream& os, const Point& p) { - os << " (" << p.x << "," << p.y << ")"; - return os; -} - -struct Shape { - virtual ~Shape(); - virtual void draw() const = 0; - - uint32_t color; - uint16_t style; - uint8_t thickness; - uint8_t hardness; -}; - -Shape::~Shape() -{ - std::cout << "base destructed" << std::endl; -} - -// Triangle implementation -// ============================================================ - -struct Triangle : public Shape -{ - Triangle(Point a, Point b, Point c); - void draw() const override; - - private: Point p[3]; -}; - - -Triangle::Triangle(Point a, Point b, Point c) - : p{a, b, c} {} - -void Triangle::draw() const -{ - std::cout << "Triangle :" - << p[0] << p[1] << p[2] - << std::endl; -} - - -// Polygon implementation -// ============================================================ - - -struct Polygon : public Shape -{ - ~Polygon(); - void draw() const override; - void addPoint(const Point& p); - - private: std::vector<Point> points; -}; - - -void Polygon::addPoint(const Point& p) -{ - points.push_back(p); -} - -Polygon::~Polygon() -{ - std::cout << "poly destructed" << std::endl; -} - -void Polygon::draw() const -{ - std::cout << "Polygon :"; - for (auto& p : points) - std::cout << p ; - std::cout << std::endl; -} - - -// Test -// ============================================================ - -void testShape(const Shape* shape) -{ - shape->draw(); -} - -#include <array> - -int main(void) -{ - std::vector<std::unique_ptr<Shape>> shapes; - - auto tri1 = std::make_unique<Triangle>(Point{5, 7}, Point{12, 7}, Point{12, 20}); - auto pol1 = std::make_unique<Polygon>(); - auto pol2 = std::make_unique<Polygon>(); - - for (auto& p: std::array<Point, 4> - {{{50, 72}, {123, 73}, {127, 201}, {828, 333}}}) - pol1->addPoint(p); - - for (auto& p: std::array<Point, 5> - {{{5, 7}, {12, 7}, {12, 20}, {82, 33}, {17, 56}}}) - pol2->addPoint(p); - - shapes.push_back(std::move(tri1)); - shapes.push_back(std::move(pol1)); - shapes.push_back(std::move(pol2)); - - for (auto& shape: shapes) - testShape(shape.get()); -} |
