Module com.marginallyclever.ro3

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 PathPoint	a
final PathPoint	b
final AABB	bounds
final PathPoint	c

Constructor Summary

Constructors

Constructor	Description
PathTriangle(PathPoint a, PathPoint b, PathPoint c)

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.
Color	getColorAt(javax.vecmath.Point3d point)
javax.vecmath.Vector3d	getNormalAt(javax.vecmath.Point3d inside)
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 PathPoint a

b

public final PathPoint b

c

public final PathPoint c

bounds

public final AABB bounds

Constructor Details

PathTriangle

public PathTriangle(PathPoint a,
 PathPoint b,
 PathPoint c)

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.

getColorAt

public Color getColorAt(javax.vecmath.Point3d 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

getNormalAt

public javax.vecmath.Vector3d getNormalAt(javax.vecmath.Point3d inside)