CartoType::TTransform3D Class Reference

#include <cartotype_transform.h>

Public Member Functions
	TTransform3D (const TTransform &aTransform)
bool	operator== (const TTransform3D &aOther) const
void	Transform (TPoint3FP &aPoint) const
void	Transform (double &aX, double &aY, double &aZ, double &aW) const
void	Concat (const TTransform3D &aTransform)
void	Translate (double aX, double aY, double aZ)
void	Scale (double aXScale, double aYScale, double aZScale)
void	RotateX (double aAngle)
void	RotateY (double aAngle)
void	RotateZ (double aAngle)
void	ReflectY (double aY)
void	Invert ()
double	Determinant () const
TResult	Perspective (double aFieldOfViewYDegrees, double aAspect, double aNear, double aFar)
TResult	Frustum (double aLeft, double aRight, double aBottom, double aTop, double aNear, double aFar)
TTransform	Affine2DTransform () const
const double *	Data () const

Detailed Description

A 3D transformation.

Constructor & Destructor Documentation

TTransform3D()

CartoType::TTransform3D::TTransform3D

(

const TTransform &

aTransform

)

Creates a TTransform3FP object from a 2D transform.

Member Function Documentation

Affine2DTransform()

TTransform CartoType::TTransform3D::Affine2DTransform

(

)

const

Returns an affine 2D transform derived from the affine 2D part of this transform.

Concat()

void CartoType::TTransform3D::Concat

(

const TTransform3D &

aTransform

)

Concatenates aTransform to this transform.

Data()

const double * CartoType::TTransform3D::Data ( ) const

inline

Returns a pointer to the contiguous array of 16 values representing the 4x4 transformation matrix.

Determinant()

double CartoType::TTransform3D::Determinant

(

)

const

Returns the determinant of the transform's 4x4 matrix.

Frustum()

TResult CartoType::TTransform3D::Frustum	(	double	aLeft,
		double	aRight,
		double	aBottom,
		double	aTop,
		double	aNear,
		double	aFar
	)

Concatenates a perspective transformation defined by a frustum to this transform.

Invert()

void CartoType::TTransform3D::Invert

(

)

Inverts this transform. If the transform cannot be inverted throws KErrorNoInverse.

operator==()

bool CartoType::TTransform3D::operator== ( const TTransform3D &  aOther ) const

inline

The equality operator.

Perspective()

TResult CartoType::TTransform3D::Perspective	(	double	aFieldOfViewYDegrees,
		double	aAspect,
		double	aNear,
		double	aFar
	)

Concatenates a perspective transformation to this transform.

aFieldOfViewYDegrees is the vertical angle of the field of view: that is, the angle between the top and bottom planes of the view frustum.

aAspect is the ratio between the width and height of the screen and is calculated as width / height.

aNear is the distance from the eye to the near plane of the view frustum.

aFar is the distance from the eye to the far plane of the view frustum.

ReflectY()

void CartoType::TTransform3D::ReflectY

(

double

aY

)

Reflect the transform around the plane Y == aY.

RotateX()

void CartoType::TTransform3D::RotateX

(

double

aAngle

)

Rotate the transform around the X axis.

RotateY()

void CartoType::TTransform3D::RotateY

(

double

aAngle

)

Rotate the transform around the Y axis.

RotateZ()

void CartoType::TTransform3D::RotateZ

(

double

aAngle

)

Rotate the transform around the Z axis.

Scale()

void CartoType::TTransform3D::Scale	(	double	aXScale,
		double	aYScale,
		double	aZScale
	)

Scale a transform by aXScale, aYScale and aZScale. Do nothing if either XScale, YScale or aZScale is 0, which creates a non-invertible matrix.

Transform() [1/2]

void CartoType::TTransform3D::Transform	(	double &	aX,
		double &	aY,
		double &	aZ,
		double &	aW
	)		const

Transforms a point given in projective coordinates.

Transform() [2/2]

void CartoType::TTransform3D::Transform

(

TPoint3FP &

aPoint

)

const

Transforms a 3D point in place.

Translate()

void CartoType::TTransform3D::Translate	(	double	aX,
		double	aY,
		double	aZ
	)

Concatenates the translation (aX,aY,aZ) to this transform.

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

• cartotype_transform.h
• cartotype_transform.cpp