Geant4 Cross Reference

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Geant4/externals/g4tools/include/tools/sg/ortho

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  1 // Copyright (C) 2010, Guy Barrand. All rights reserved.
  2 // See the file tools.license for terms.
  3 
  4 #ifndef tools_sg_ortho
  5 #define tools_sg_ortho
  6 
  7 #include "base_camera"
  8 
  9 namespace tools {
 10 namespace sg {
 11 
 12 class ortho : public base_camera {
 13   TOOLS_NODE(ortho,tools::sg::ortho,base_camera)
 14 public:
 15   virtual float near_height() const {return height.value();}
 16   virtual void zoom(float a_fac) {
 17     //for exa :
 18     //  a_fac = 0.99f is a zoom in
 19     //  a_fac = 1.01f is a zoom out
 20     height.value(height.value()*a_fac);
 21   }
 22   virtual camera_type type() const {return camera_ortho;}
 23 public:
 24   sf<float> height;
 25 public:
 26   virtual const desc_fields& node_desc_fields() const {
 27     TOOLS_FIELD_DESC_NODE_CLASS(tools::sg::ortho)
 28     static const desc_fields s_v(parent::node_desc_fields(),1, //WARNING : take care of count.
 29       TOOLS_ARG_FIELD_DESC(height)
 30     );
 31     return s_v;
 32   }
 33 private:
 34   void add_fields(){
 35     add_field(&height);
 36   }
 37 public:
 38   ortho()
 39   :parent()
 40   ,height(2)
 41   {
 42 #ifdef TOOLS_MEM
 43     mem::increment(s_class().c_str());
 44 #endif
 45     add_fields();
 46   }
 47   virtual ~ortho(){
 48 #ifdef TOOLS_MEM
 49     mem::decrement(s_class().c_str());
 50 #endif
 51   }
 52 public:
 53   ortho(const ortho& a_from)
 54   :parent(a_from)
 55   ,height(a_from.height)
 56   {
 57 #ifdef TOOLS_MEM
 58     mem::increment(s_class().c_str());
 59 #endif
 60     add_fields();
 61   }
 62   ortho& operator=(const ortho& a_from){
 63     parent::operator=(a_from);
 64     height = a_from.height;
 65     return *this;
 66   }
 67 public: //operators:
 68   bool operator==(const ortho& a_from) const{
 69     if(!parent::operator==(a_from)) return false;
 70     if(height!=a_from.height) return false;
 71     return true;
 72   }
 73   bool operator!=(const ortho& a_from) const {
 74     return !operator==(a_from);
 75   }
 76 public:
 77   void dump(std::ostream& a_out) {
 78     parent::dump(a_out);
 79     a_out << " height " << height.value() << std::endl;
 80   }
 81 protected:
 82   virtual void get_lrbt(unsigned int a_ww,unsigned int a_wh,
 83                         float& a_l,float& a_r,float& a_b,float& a_t) {
 84     float aspect = float(a_ww)/float(a_wh);
 85     //landscape : float aspect = float(a_action.wh())/float(a_action.ww());
 86     float hh = height.value()*0.5f;
 87     a_l = -aspect*hh;
 88     a_r = aspect*hh;
 89     a_b = -hh;
 90     a_t = hh;
 91   }
 92 };
 93 
 94 inline ortho* cast_ortho(base_camera& a_bcam) {return safe_cast<base_camera,ortho>(a_bcam);}
 95 
 96 }}
 97 
 98 #endif