MyNormalVisitor Class Reference

#include <MyNormalVisitor.h>

List of all members.

Public Types
enum	GenerateMethods {   MWE = 0, MWA, MWSELR, MWAAT,   MWELR, MWSRELR }
Public Member Functions
	MyNormalVisitor (int method=MWE, bool flip=false)
virtual	~MyNormalVisitor ()
void	setMethod (int m)
int	getMethod () const
void	setThreshold (double t)
double	getThreshold () const
virtual void	apply (osg::Geode &geode)
Static Public Member Functions
static void	buildNormal (osg::Geometry &geoset, bool flip=false, int method=MWE, double threshold=1e-6)
static void	buildNormalZ (osg::Geometry &geoset, bool flip=false, int method=MWE, double threshold=1e-6)
Public Attributes
int	done
Static Protected Member Functions
static bool	checkPrimitives (osg::Geometry &geom)
Protected Attributes
double	_threshold
int	_method
bool	_flip

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Member Enumeration Documentation

enum MyNormalVisitor::GenerateMethods

Enumerator:

MWE
MWA
MWSELR
MWAAT
MWELR
MWSRELR

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Constructor & Destructor Documentation

MyNormalVisitor::MyNormalVisitor	(	int	method = MWE,
		bool	flip = false
	)

MyNormalVisitor::~MyNormalVisitor

(

)

[virtual]

---

Member Function Documentation

void MyNormalVisitor::apply

(

osg::Geode &

geode

)

[virtual]

void MyNormalVisitor::buildNormal	(	osg::Geometry &	geoset,
		bool	flip = false,
		int	method = MWE,
		double	threshold = 1e-6
	)			[static]

Create normals for geometry.

void MyNormalVisitor::buildNormalZ	(	osg::Geometry &	geoset,
		bool	flip = false,
		int	method = MWE,
		double	threshold = 1e-6
	)			[static]

bool MyNormalVisitor::checkPrimitives

(

osg::Geometry &

geom

)

[static, protected]

int MyNormalVisitor::getMethod

(

)

const [inline]

double MyNormalVisitor::getThreshold

(

)

const [inline]

void MyNormalVisitor::setMethod

(

int

m

)

[inline]

Set normal algorithm to use. There are 6 methods at present:

• MWE: "Mean Weighted Equally" (Henri Gouraud, 1971), also known as the smoothing normal.
• MWA: "Mean Weighted by Angle" (Thurmer and Wuthrich, 1998).
• MWSELR: "Mean Weighted by Sine and Edge Length Reciprocals" (Max, 1999).
• MWAAT: "Mean Weighted by Areas of Adjacent Triangles" (Max, 1999).
• MWELR: "Mean Weighted by Edge Length Reciprocals" (Max, 1999).
• MWSRELR: "Mean Weighted by Square Root of Edge Length Reciprocals" (Max, 1999).

void MyNormalVisitor::setThreshold

(

double

t

)

[inline]

Set a threshold to decide whether to include a triangle's for calculating. The threshold will be compared with the dot product of normals of 2 triangles sharing same vertex, and the normal will be included in the averaging if the dot product greater than the threshold. A corner vertex of a sharp crease (with a cosine 90 degree) will not be smoothing then. If you want a totally smooth geometry, just set the threshold to be greater than 1.

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Member Data Documentation

bool MyNormalVisitor::_flip [protected]

int MyNormalVisitor::_method [protected]

double MyNormalVisitor::_threshold [protected]

int MyNormalVisitor::done

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The documentation for this class was generated from the following files:

• C:/Users/Robert/Documents/Visual Studio 2008/Projects/ferprojekt/TerrainEditor/TerrainEditor/MyNormalVisitor.h
• C:/Users/Robert/Documents/Visual Studio 2008/Projects/ferprojekt/TerrainEditor/TerrainEditor/MyNormalVisitor.cpp