Module raytracer

Package de.grogra.ray2.antialiasing

Class StochasticSupersampling

java.lang.Object

de.grogra.ray2.tracing.ProcessorBase

de.grogra.ray2.antialiasing.NoAntialiasing

de.grogra.ray2.antialiasing.StochasticSupersampling

All Implemented Interfaces:

Antialiasing, Cloneable

public class StochasticSupersampling
extends NoAntialiasing

This class implements a stratified stochastic supersampling strategy. Each pixel rectangle is divided into a square grid of strata, for each stratum a random ray is generated and its color determined.

Author:

Michael Tauer, Ole Kniemeyer

Field Summary

Fields

Modifier and Type	Field	Description
static int	CURRENT_I
static int	CURRENT_J
static int	DEBUG_I
static int	DEBUG_J
static final String	GRID_SIZE

Fields inherited from class de.grogra.ray2.antialiasing.NoAntialiasing

processor

Constructor Summary

Constructors

Constructor	Description
StochasticSupersampling()

Method Summary

Modifier and Type	Method	Description
protected void	appendStatisticsImpl(StringBuffer stats)
void	getColorOfRectangle(double x, double y, double width, double height, Color4f color, Random random)	This method has to return a color value determined for a given rectangular region on the image plane.
void	initialize(PixelwiseRenderer tracer, Scene scene)	Initializes the antialiasing method using the data available through the renderer.
protected void	initLocals()
void	setGridSize(int size)	Sets the grid size for supersampling.

Methods inherited from class de.grogra.ray2.antialiasing.NoAntialiasing

dup, setPixelXY

Methods inherited from class de.grogra.ray2.tracing.ProcessorBase

appendStatistics, clone, mergeStatistics

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface de.grogra.ray2.antialiasing.Antialiasing

appendStatistics

Field Details

GRID_SIZE

public static final String GRID_SIZE

See Also:

• Constant Field Values

DEBUG_I

public static int DEBUG_I

DEBUG_J

public static int DEBUG_J

CURRENT_I

public static int CURRENT_I

CURRENT_J

public static int CURRENT_J

Constructor Details

StochasticSupersampling

public StochasticSupersampling()

Method Details

initLocals

protected void initLocals()

Overrides:

initLocals in class NoAntialiasing

initialize

public void initialize(PixelwiseRenderer tracer,
 Scene scene)

Description copied from interface: Antialiasing

Initializes the antialiasing method using the data available through the renderer.

Specified by:

initialize in interface Antialiasing

Overrides:

initialize in class NoAntialiasing

Parameters:

tracer - the renderer which provides the needed information

scene - the scene which is rendered

setGridSize

public void setGridSize(int size)

Sets the grid size for supersampling. A square grid of size by size strata will be used to generate the random rays.

Parameters:

size - size of the grid edges

getColorOfRectangle

public void getColorOfRectangle(double x,
 double y,
 double width,
 double height,
 Color4f color,
 Random random)

Description copied from interface: Antialiasing

This method has to return a color value determined for a given rectangular region on the image plane. The coordinates are understood as uv coordinates for the Sensor which represents the camera.

Specified by:

getColorOfRectangle in interface Antialiasing

Overrides:

getColorOfRectangle in class NoAntialiasing

Parameters:

x - Describes the x position of the lower left corner of the rectangle.

y - Describes the y position of the lower left corner of the rectangle.

width - width of the rectangle

height - height of the of the rectangle

color - The determined color of the rectangle will be stored in this parameter.

random - pseudorandom generator

appendStatisticsImpl

protected void appendStatisticsImpl(StringBuffer stats)

Overrides:

appendStatisticsImpl in class NoAntialiasing