Module com.marginallyclever.robotoverlord

Package com.marginallyclever.ro3.apps.pathtracer

Class PathTriangle

java.lang.Object

com.marginallyclever.ro3.apps.pathtracer.PathTriangle

public class PathTriangle
extends Object

Triangle optimized for path tracing

Field Summary

Fields

Modifier and Type	Field	Description
final javax.vecmath.Point3d	a
final javax.vecmath.Point3d	b
final AABB	bounds
final javax.vecmath.Point3d	c
final javax.vecmath.Vector3d	normal
final javax.vecmath.Point2d	tA
final javax.vecmath.Point2d	tB
final javax.vecmath.Point2d	tC

Constructor Summary

Constructors

Constructor	Description
PathTriangle(javax.vecmath.Point3d a, javax.vecmath.Point3d b, javax.vecmath.Point3d c, javax.vecmath.Vector3d normal, javax.vecmath.Point2d tA, javax.vecmath.Point2d tB, javax.vecmath.Point2d tC)

Method Summary

Modifier and Type	Method	Description
double	getArea()
AABB	getBounds()
double	getCentroidAxis(int axis)	Get the centroid of the triangle along a specific axis.
javax.vecmath.Point3d	getRandomPointInside()	Get a random point inside the triangle using barycentric coordinates.
javax.vecmath.Point2d	getUVAt(javax.vecmath.Point3d point)	Get the UV coordinates of the texture at a specific point on the triangle.
double	intersectRay(Ray ray)	Test if a ray intersects this triangle.

Methods inherited from class java.lang.Object

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

Field Details

a

public final javax.vecmath.Point3d a

b

public final javax.vecmath.Point3d b

c

public final javax.vecmath.Point3d c

tA

public final javax.vecmath.Point2d tA

tB

public final javax.vecmath.Point2d tB

tC

public final javax.vecmath.Point2d tC

normal

public final javax.vecmath.Vector3d normal

bounds

public final AABB bounds

Constructor Details

PathTriangle

public PathTriangle(javax.vecmath.Point3d a,
 javax.vecmath.Point3d b,
 javax.vecmath.Point3d c,
 javax.vecmath.Vector3d normal,
 javax.vecmath.Point2d tA,
 javax.vecmath.Point2d tB,
 javax.vecmath.Point2d tC)

Method Details

getBounds

public AABB getBounds()

intersectRay

public double intersectRay(Ray ray)

Test if a ray intersects this triangle.

Parameters:

ray - the ray to test

Returns:

the distance along the ray to the intersection point, or Double.MAX_VALUE if there is no intersection.

getRandomPointInside

public javax.vecmath.Point3d getRandomPointInside()

Get a random point inside the triangle using barycentric coordinates.

Returns:

a random point inside the triangle.

getArea

public double getArea()

getUVAt

public javax.vecmath.Point2d getUVAt(javax.vecmath.Point3d point)

Get the UV coordinates of the texture at a specific point on the triangle.

Parameters:

point - the 3d world point of intersection with the triangle.

Returns:

the UV coordinates of the texture at the point.

getCentroidAxis

public double getCentroidAxis(int axis)

Get the centroid of the triangle along a specific axis.

Parameters:

axis - the axis to get the centroid along (0 for x, 1 for y, or 2 for z)

Returns:

the centroid coordinate along the specified axis