00001 #ifndef vsol_region_3d_h_ 00002 #define vsol_region_3d_h_ 00003 //***************************************************************************** 00004 //: 00005 // \file 00006 // \brief Region of a 3D space 00007 // 00008 // \author 00009 // François BERTEL 00010 // 00011 // \verbatim 00012 // Modifications 00013 // 2000/05/04 François BERTEL Creation 00014 // 2000/06/17 Peter Vanroose Implemented all operator==()s and type info 00015 // 2003/01/08 Peter Vanroose Added pure virtual is_convex() 00016 // 2004/09/06 Peter Vanroose Added safe cast methods to polygon_3d 00017 // 2004/10/09 Peter Vanroose Inlined all 1-line methods in class decl 00018 // \endverbatim 00019 //***************************************************************************** 00020 00021 #include <vsol/vsol_surface_3d.h> 00022 class vsol_polygon_3d; 00023 00024 class vsol_region_3d : public vsol_surface_3d 00025 { 00026 protected: 00027 enum vsol_region_3d_type 00028 { REGION_NO_TYPE=0, 00029 POLYGON, 00030 NUM_REGION_TYPES 00031 }; 00032 00033 //--------------------------------------------------------------------------- 00034 //: Return the region type 00035 //--------------------------------------------------------------------------- 00036 virtual vsol_region_3d_type region_type(void) const { return vsol_region_3d::REGION_NO_TYPE; } 00037 00038 public: 00039 //--------------------------------------------------------------------------- 00040 //: Return the spatial type 00041 //--------------------------------------------------------------------------- 00042 vsol_spatial_object_3d_type spatial_type(void) const { return vsol_spatial_object_3d::REGION; } 00043 00044 //*************************************************************************** 00045 // Initialization 00046 //*************************************************************************** 00047 00048 //--------------------------------------------------------------------------- 00049 // Destructor 00050 //--------------------------------------------------------------------------- 00051 virtual ~vsol_region_3d() {} 00052 00053 //*************************************************************************** 00054 // virtuals of vsol_spatial_object_3d 00055 //*************************************************************************** 00056 00057 virtual vsol_region_3d* cast_to_region(void) { return this; } 00058 virtual vsol_region_3d const* cast_to_region(void) const { return this; } 00059 00060 virtual vsol_polygon_3d *cast_to_polygon(void) {return 0;} 00061 virtual vsol_polygon_3d const* cast_to_polygon(void) const {return 0;} 00062 00063 //*************************************************************************** 00064 // Status report 00065 //*************************************************************************** 00066 00067 //--------------------------------------------------------------------------- 00068 //: Return the area of `this' 00069 //--------------------------------------------------------------------------- 00070 virtual double area(void) const=0; 00071 00072 //--------------------------------------------------------------------------- 00073 //: Return true if this region is convex 00074 //--------------------------------------------------------------------------- 00075 virtual bool is_convex(void) const=0; 00076 00077 //: Return a platform independent string identifying the class 00078 virtual vcl_string is_a() const { return vcl_string("vsol_region_3d"); } 00079 00080 //: Return true if the argument matches the string identifying the class or any parent class 00081 virtual bool is_class(const vcl_string& cls) const 00082 { return cls==is_a() || vsol_surface_3d::is_class(cls); } 00083 }; 00084 00085 #endif // vsol_region_3d_h_
1.7.5.1