VolumeJ
Class VJPhongShader

java.lang.Object
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  +--VolumeJ.VJShader
        |
        +--VolumeJ.VJPhongShader

public class VJPhongShader

extends VJShader

VJShader implements shading in a Phong illumination model, for ambient and diffuse shading only. Specular refelection has not been implemented. Copyright (c) 2001-2002, Michael Abramoff. All rights reserved.

Fields inherited from class VolumeJ.VJShader

doBackface, light

Constructor Summary

VJPhongShader(float ambient, VJLight light, boolean doBackface)
Create a new shader for ambient light and a VJLight light.

Method Summary

VJShade	shade(VJGradient g) Shading method for Phong illumination model that uses normalized gradient g.
java.lang.String	toString()

Methods inherited from class VolumeJ.VJShader

getBackground, getLight, setBackface

Methods inherited from class java.lang.Object

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

Constructor Detail

VJPhongShader

public VJPhongShader(float ambient,
                     VJLight light,
                     boolean doBackface)

Create a new shader for ambient light and a VJLight light.

Parameters:

ambient - a float [0-1] that sets the amount of background lighting.

light - a VJLight that is the position and intensity of the diffuse lighting.

doBackface - a boolean that sets whether or not backfacing is on.

Method Detail

shade

public VJShade shade(VJGradient g)

Shading method for Phong illumination model that uses normalized gradient g. Finds the shade that fits with light and g, with ambient and diffuse reflection only. Viewing direction = 0,0,1.

Overrides:

shade in class VJShader

Parameters:

g - a VJGradient containing the normalized gradients in x, y, and z dimensions.

Returns:

a VJShade containing a monocolor or trichannel shade.

toString

public java.lang.String toString()

Overrides:

toString in class VJShader