Detailed Description

Description:: This class stores the hierarchy tree of a shape object. In addition it stores a BitArray with an entry for each polygon in the shape which indicates whether that polygon should be reversed in order to provide the proper clockwise/counterclockwise ordering for the nested shapes. All methods of this class are implemented by the system.

Data Members:: GenericHierarchy hier;

Describes the hierarchy.

BitArray reverse;

Indicates whether that polygon should be reversed in order to provide the proper clockwise / counterclockwise ordering for the nested shapes. There is one bit in the bit array for every polygon in the shape. For example, if you pass in two nested circles and they are both clockwise, the outermost circle will have its reverse bit set to indicate it should be reversed in order to be properly extruded or lofted. This is because for nested shapes the outermost circle should be counterclockwise.

#include <shphier.h>

Inheritance diagram for ShapeHierarchy:

Public Member Functions
	ShapeHierarchy ()
	ShapeHierarchy (int polys)
void	New (int polys=0)
ShapeHierarchy &	operator= (ShapeHierarchy &from)
Public Attributes
GenericHierarchy	hier
BitArray	reverse

Constructor & Destructor Documentation

ShapeHierarchy ( ) [inline]

{}

ShapeHierarchy ( int polys ) [inline]

Remarks:: Constructor. This constructor clears out the hierarchy, sets the number of polygons to poly and clears all the bits in the BitArray.

{ New(polys); }

void New ( int polys = 0 ) [inline]

Remarks:: This methods clears out the hierarchy, sets the number of polygons to poly and clears all the bits in the BitArray.

{ hier.New(); reverse.SetSize(polys); reverse.ClearAll(); }

ShapeHierarchy& operator= ( ShapeHierarchy & from ) [inline]

{ hier=from.hier; reverse=from.reverse; return *this; }