org.sunflow.core.primitive
Class TriangleMesh

java.lang.Object
  org.sunflow.core.primitive.TriangleMesh

All Implemented Interfaces:

PrimitiveList, RenderObject

Direct Known Subclasses:

TriangleMeshLight

public class TriangleMesh
extends java.lang.Object
implements PrimitiveList

Field Summary

protected float[]	points
protected int[]	triangles

Constructor Summary

TriangleMesh()

Method Summary

PrimitiveList	getBakingPrimitives() Create a new PrimitiveList object suitable for baking lightmaps.
int	getNumPrimitives() Returns the number of individual primtives in this aggregate object.
protected Point3	getPoint(int i)
void	getPoint(int tri, int i, Point3 p)
float	getPrimitiveBound(int primID, int i) Retrieve the bounding box component of a particular primitive in object space.
BoundingBox	getWorldBounds(Matrix4 o2w) Compute a bounding box of this object in world space, using the specified object-to-world transformation matrix.
void	init()
void	intersectPrimitive(Ray r, int primID, IntersectionState state) Intersect the specified primitive in local space.
void	prepareShadingState(ShadingState state) Prepare the specified ShadingState by setting all of its internal parameters.
static void	setSmallTriangles(boolean smallTriangles)
boolean	update(ParameterList pl, SunflowAPI api) Update this object given a list of parameters.
void	writeObj(java.lang.String filename)

Methods inherited from class java.lang.Object

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

Field Detail

points

protected float[] points

triangles

protected int[] triangles

Constructor Detail

TriangleMesh

public TriangleMesh()

Method Detail

setSmallTriangles

public static void setSmallTriangles(boolean smallTriangles)

writeObj

public void writeObj(java.lang.String filename)

update

public boolean update(ParameterList pl,
                      SunflowAPI api)

Description copied from interface: RenderObject

Update this object given a list of parameters. This method is guarenteed to be called at least once on every object, but it should correctly handle empty parameter lists. This means that the object should be in a valid state from the time it is constructed. This method should also return true or false depending on whether the update was succesfull or not.

Specified by:

update in interface RenderObject

Parameters:

pl - list of parameters to read from

api - reference to the current scene

Returns:

true if the update is succesfull, false otherwise

getPrimitiveBound

public float getPrimitiveBound(int primID,
                               int i)

Description copied from interface: PrimitiveList

Retrieve the bounding box component of a particular primitive in object space. Even indexes get minimum values, while odd indexes get the maximum values for each axis.

Specified by:

getPrimitiveBound in interface PrimitiveList

Parameters:

primID - primitive index

i - bounding box side index

Returns:

value of the request bound

getWorldBounds

public BoundingBox getWorldBounds(Matrix4 o2w)

Description copied from interface: PrimitiveList

Compute a bounding box of this object in world space, using the specified object-to-world transformation matrix. The bounds should be as exact as possible, if they are difficult or expensive to compute exactly, you may use Matrix4.transform(BoundingBox). If the matrix is null no transformation is needed, and object space is equivalent to world space.

Specified by:

getWorldBounds in interface PrimitiveList

Parameters:

o2w - object to world transformation matrix

Returns:

object bounding box in world space

intersectPrimitive

public void intersectPrimitive(Ray r,
                               int primID,
                               IntersectionState state)

Description copied from interface: PrimitiveList

Intersect the specified primitive in local space.

Specified by:

intersectPrimitive in interface PrimitiveList

Parameters:

r - ray in the object's local space

primID - primitive index to intersect

state - intersection state

See Also:

Ray.setMax(float), IntersectionState.setIntersection(int, float, float)

getNumPrimitives

public int getNumPrimitives()

Description copied from interface: PrimitiveList

Returns the number of individual primtives in this aggregate object.

Specified by:

getNumPrimitives in interface PrimitiveList

Returns:

number of primitives

prepareShadingState

public void prepareShadingState(ShadingState state)

Description copied from interface: PrimitiveList

Prepare the specified ShadingState by setting all of its internal parameters.

Specified by:

prepareShadingState in interface PrimitiveList

Parameters:

state - shading state to fill in

init

public void init()

getPoint

protected Point3 getPoint(int i)

getPoint

public void getPoint(int tri,
                     int i,
                     Point3 p)

getBakingPrimitives

public PrimitiveList getBakingPrimitives()

Description copied from interface: PrimitiveList

Create a new PrimitiveList object suitable for baking lightmaps. This means a set of primitives laid out in the unit square UV space. This method is optional, objects which do not support it should simply return null.

Specified by:

getBakingPrimitives in interface PrimitiveList

Returns:

a list of baking primitives