Module raytracer

Package de.grogra.ray.antialiasing

Class AdaptiveSupersampling

java.lang.Object

de.grogra.ray.antialiasing.AdaptiveSupersampling

All Implemented Interfaces:

Antialiasing

public class AdaptiveSupersampling
extends Object
implements Antialiasing

The adaptive supersampling algorithm is a nonuniform supersampling algorithm. Only if a supersampling for a pixel is reasonable the pixel is divided into subpixel. The following algorithm is used to perform the division: The color values of the four corners and the center of a pixel are determined. If the difference of two color values exceeds a given limit the pixel is recursively divided into subpixels until a depth limit of the recursion is achieved.

Author:

Micha

Constructor Summary

Constructors

Constructor	Description
AdaptiveSupersampling()

Method Summary

Modifier and Type	Method	Description
void	getColorFromFrustum(double x, double y, double width, double height, Color4f color)	This method has to return a color value determined for a given pixel frustum.
void	initialize(RTCamera camera, RayProcessor processor)	Initializes the antialiasing method and sets the camera and ray processor object that has to be used.

Methods inherited from class java.lang.Object

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

Constructor Details

AdaptiveSupersampling

public AdaptiveSupersampling()

Method Details

initialize

public void initialize(RTCamera camera,
 RayProcessor processor)

Description copied from interface: Antialiasing

Initializes the antialiasing method and sets the camera and ray processor object that has to be used.

Specified by:

initialize in interface Antialiasing

Parameters:

camera - sets the camera object that has to be used for the antialiasing class.

processor - sets the ray processor object that has to be used for the antialiasing class.

getColorFromFrustum

public void getColorFromFrustum(double x,
 double y,
 double width,
 double height,
 Color4f color)

Description copied from interface: Antialiasing

This method has to return a color value determined for a given pixel frustum. A pixel frustum is a sub frustum of the view frustum that encloses exactly a special pixel of the image. The pixel frustum is indirectly described by describing the related pixel.

Specified by:

getColorFromFrustum in interface Antialiasing

Parameters:

x - Describes the relative x position of the top left corner of the pixel. It can range from -1 to +1.

y - Describes the relative y position of the top left corner of the pixel. It can range from -1 to +1.

width - Describes the relative width of the of the pixel. It can range from 0 to +2.

height - Describes the relative height of the of the pixel. It can range from 0 to +2.

color - The determined color for the pixel frustum will be saved in this parameter. So this parameter will be changed!