Class IndexedFaceSet

java.lang.Object
  |
  +--Object
        |
        +--IndexedFaceSet

public class IndexedFaceSet

extends Object

IndexedFaceSet represents a collection of planar polygons

Field Summary

Fields inherited from class Object

SurfaceMaterial

Constructor Summary

IndexedFaceSet()

IndexedFaceSet(Material n)
Create a plane with the given material and plane equation Note values are referenced not copied in the new object

Method Summary

double	intersect(Ray ray) Find the intersection of the indexedfaceset and a given ray.
Vector	normal(Point p) Find the normal of an object at the given point on its surface.
void	print(SceneWriter os) Print a human readable version of the indexedfaceset definition to the given destination
void	read(SceneReader is) Read the indexedfaceset from the given source
void	write(SceneWriter os) Write the indexedfaceset to the given destination

Methods inherited from class java.lang.Object

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

Constructor Detail

IndexedFaceSet

public IndexedFaceSet()

IndexedFaceSet

public IndexedFaceSet(Material n)

Create a plane with the given material and plane equation Note values are referenced not copied in the new object

Parameters:

n - the material for the plane

Method Detail

normal

public Vector normal(Point p)

Find the normal of an object at the given point on its surface. Note that for planes the normal is constant and a reference to the internal vector is returned.

Specified by:

normal in class Object

Parameters:

p - the surface point to find the normal at

Returns:

a reference to the fixed normal of the plane

intersect

public double intersect(Ray ray)

Find the intersection of the indexedfaceset and a given ray. The return value is positive is the intersection is found and this value gives the distance along the ray. Negative values imply that the intersection was either not successful or the intersection point was before the origin. This value can be used with the pointAt method of the Ray class (@see Ray#pointAt)

Specified by:

intersect in class Object

Parameters:

ray - the ray to intersect with

Returns:

a double value that gives the distance along the ray.

read

public void read(SceneReader is)
          throws java.io.IOException,
                 java.lang.NumberFormatException

Read the indexedfaceset from the given source

Specified by:

read in class Object

Parameters:

is - the source to read from

Throws:

java.io.IOException - if the light can not be read

java.io.NumberFormatException - if there a number format error is encountered

java.lang.NumberFormatException

write

public void write(SceneWriter os)
           throws java.io.IOException

Write the indexedfaceset to the given destination

Specified by:

write in class Object

Parameters:

os - the destination to write to

Throws:

java.io.IOException - if the write fails.

print

public void print(SceneWriter os)
           throws java.io.IOException

Print a human readable version of the indexedfaceset definition to the given destination

Specified by:

print in class Object

Parameters:

os - the destination to write to

Throws:

java.io.IOException - if the write fails.