neofx-zoomedit/Triangle.h

#ifndef TRIANGLE_H_
#define TRIANGLE_H_


#include "Vertex.h"
#include "Line.h"

class Triangle {
  private:
    Vertex va, vb, vc;
  public:
    enum Direction {
      CW, CCW, Unknown
    };
        
    Triangle() {}
    Triangle(const Vertex& vertexa, const Vertex& vertexb, const Vertex& vertexc)
      : va(vertexa), vb(vertexb), vc(vertexc) {}
    
    Vertex &getVertexA() {return va;}
    const Vertex &getVertexA() const {return va;}
    void setVertexA(const Vertex &v) {va = v;}
    
    Vertex &getVertexB() {return vb;}
    const Vertex &getVertexB() const {return vb;}
    void setVertexB(const Vertex &v) {vb = v;}
    
    Vertex &getVertexC() {return vc;}
    const Vertex &getVertexC() const {return vc;}
    void setVertexC(const Vertex &v) {vc = v;}
    
    Direction getDirection() const;
    
    float area() const;
    float perimeter() const;
    
    bool contains(const Vertex &v) const;
    bool onEdge(const Vertex &v) const;
    int intersectionCount(const Line &l) const;
};

#endif /*TRIANGLE_H_*/