Rasterizer3D Class Reference

#include <Rasterizer3D.h>

Public Member Functions
	Rasterizer3D (FrameBuffer *fb)
	~Rasterizer3D ()
void	clear (const Color &color)
void	draw (list< Triangle *> triangles)
void	useDimetricView (double phi)
void	useIsometricView ()
void	useThreePointPerspectiveView (double d, double tx, double ty, double tz, double phi, double theta)
void	useTrimetricView (double phi, double theta)
void	useTwoPointPerspectiveView (double d, double ty, double tz, double theta)

Private Member Functions
void	drawTriangle (Color color, Matrix< 4, 3 > triangle)
void	updatePerspectiveMatrix (double d)
void	updateRotationXMatrix (double sinPhi, double cosPhi)
void	updateRotationXMatrix (double phi)
void	updateRotationYMatrix (double sinTheta, double cosTheta)
void	updateRotationYMatrix (double theta)
void	updateTranslationMatrix (double tx, double ty, double tz)

Private Attributes
double	height
double	width
Matrix< 2, 4 >	downsize
Matrix< 4, 4 >	perspective
Matrix< 4, 4 >	projection
Matrix< 4, 4 >	rotationX
Matrix< 4, 4 >	rotationY
Matrix< 4, 4 >	translation
Rasterizer2D *	rasterizer2D

Detailed Description

A Rasterizer3D object rasterizes three-dimensional objects.

Constructor & Destructor Documentation

Rasterizer3D()

Rasterizer3D::Rasterizer3D ( FrameBuffer *  fb )

explicit

Explicit Value Constructor.

Parameters

fb	The FrameBuffer containing the pixels

~Rasterizer3D()

Rasterizer3D::~Rasterizer3D

(

)

Destructor.

Member Function Documentation

clear()

void Rasterizer3D::clear

(

const Color &

color

)

Fill the entire FrameBuffer with the given color.

Parameters

color

The color

draw()

void Rasterizer3D::draw

(

list< Triangle *>

triangles

)

Draw a list of Triangle objects.

Parameters

triangles

The Triangle objects

drawTriangle()

void Rasterizer3D::drawTriangle ( Color  color, Matrix< 4, 3 >  triangle  )

private

Draw a single triangle.

Parameters

color	The color to use
triangle	The triangle to draw

updatePerspectiveMatrix()

void Rasterizer3D::updatePerspectiveMatrix ( double  d )

private

Update the perspective matrix.

Parameters

d	The parameter

updateRotationXMatrix() [1/2]

void Rasterizer3D::updateRotationXMatrix ( double  sinPhi, double  cosPhi  )

private

Update the matrix for rotating around the x-axis.

Parameters

sinPhi	The sin of the rotation angle
cosPhi	The cos of the rotation angle

updateRotationXMatrix() [2/2]

void Rasterizer3D::updateRotationXMatrix ( double  phi )

private

Update the matrix for rotating around the x-axis.

Parameters

phi	The rotation angle (in radians)

updateRotationYMatrix() [1/2]

void Rasterizer3D::updateRotationYMatrix ( double  sinTheta, double  cosTheta  )

private

Update the matrix for rotating around the y-axis.

Parameters

sinTheta	The sin of the rotation angle
cosTheta	The cos of the rotation angle

updateRotationYMatrix() [2/2]

void Rasterizer3D::updateRotationYMatrix ( double  theta )

private

Update the matrix for rotating around the y-axis.

Parameters

theta

The rotation angle (in radians)

updateTranslationMatrix()

void Rasterizer3D::updateTranslationMatrix ( double  tx, double  ty, double  tz  )

private

Update the translation matrix.

Parameters

tx	The size of the translation in the x-direction
ty	The size of the translation in the y-direction
tz	The size of the translation in the z-direction

useDimetricView()

void Rasterizer3D::useDimetricView

(

double

phi

)

Instructs the rasterizer to use a dimetric view. Specifically, this method updates the two rotation matrices so that they are appropriate for a dimetric view.

Parameters

phi	The rotation around the x-axis (in radians)

useIsometricView()

void Rasterizer3D::useIsometricView

(

)

Instructs the rasterizer to use an isometric view. Specifically, this method updates the two rotation matrices so that they are appropriate for an isometric view.

useThreePointPerspectiveView()

void Rasterizer3D::useThreePointPerspectiveView	(	double	d,
		double	tx,
		double	ty,
		double	tz,
		double	phi,
		double	theta
	)

Instructs the rasterizer to use a three-point perspective view. Specifically, this method updates the rotation and translation matrices so that they are appropriate for a three-point perspective view.

Parameters

d	The COP
tx	Translation along the x-axis
ty	Translation along the y-axis
tz	Translation along the z-axis
phi	Rotation around the x-axis (in radians)
theta	Rotation around the y-axis (in radians)

useTrimetricView()

void Rasterizer3D::useTrimetricView	(	double	phi,
		double	theta
	)

Instructs the rasterizer to use a trimetric view. Specifically, this method updates the two rotation matrices so that they are appropriate for a trimetric view.

Parameters

phi	Rotation around the x-axis (in radians)
theta	Rotation around the y-axis (in radians)

useTwoPointPerspectiveView()

void Rasterizer3D::useTwoPointPerspectiveView	(	double	d,
		double	ty,
		double	tz,
		double	theta
	)

Instructs the rasterizer to use a two-point perspective view. Specifically, this method updates the rotation and translation matrices so that they are appropriate for a two-point perspective view.

Parameters

d	The COP
ty	Translation along the y-axis
tz	Translation along the z-axis
theta	Rotation around the y-axis (in radians)

Member Data Documentation

downsize

Matrix<2, 4> Rasterizer3D::downsize

private

An intermediate variable used to reduce the dimensionality of a triangle.

height

double Rasterizer3D::height

private

The height of the raster (in pixels).

perspective

Matrix<4, 4> Rasterizer3D::perspective

private

The perspective Matrix.

projection

Matrix<4, 4> Rasterizer3D::projection

private

The projection Matrix.

rasterizer2D

Rasterizer2D* Rasterizer3D::rasterizer2D

private

The Rasterizer2D to use.

rotationX

Matrix<4, 4> Rasterizer3D::rotationX

private

The rotation around the x-axis Matrix.

rotationY

Matrix<4, 4> Rasterizer3D::rotationY

private

The rotation around the y-axis Matrix.

translation

Matrix<4, 4> Rasterizer3D::translation

private

The translation Matrix.

width

double Rasterizer3D::width

private

The width of the raster (in pixels).

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

• Rasterizer3D.h
• Rasterizer3D.cpp