|
||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | |||||||
java.lang.Objectde.grogra.vecmath.geom.VolumeBase
de.grogra.vecmath.geom.CompoundVolume
de.grogra.vecmath.geom.UnionBase
de.grogra.vecmath.geom.SimpleUnion
public class SimpleUnion
An instance of this class represents a simple union of a list of volumes.
In constrast to CSGUnion, all intersections
of volume components are reported so that inner surfaces are not removed.
| Field Summary |
|---|
| Fields inherited from class de.grogra.vecmath.geom.CompoundVolume |
|---|
volumes |
| Constructor Summary | |
|---|---|
SimpleUnion()
|
|
| Method Summary | |
|---|---|
boolean |
computeIntersections(Line line,
int which,
IntersectionList list,
Intersection excludeStart,
Intersection excludeEnd)
Computes intersections between the boundary surface of this object and the specified line. |
| Methods inherited from class de.grogra.vecmath.geom.UnionBase |
|---|
contains, getExtent |
| Methods inherited from class de.grogra.vecmath.geom.CompoundVolume |
|---|
boxContainsBoundary, computeNormal, computeTangents, computeUV |
| Methods inherited from class de.grogra.vecmath.geom.VolumeBase |
|---|
addConvexIntersections, getId, operator$and, operator$com, operator$or, operator$sub, setId |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public SimpleUnion()
| Method Detail |
|---|
public boolean computeIntersections(Line line,
int which,
IntersectionList list,
Intersection excludeStart,
Intersection excludeEnd)
Volumeline. The intersections are added
to list in ascending order of distance
(i.e., of Intersection.parameter), where the
parameter has to lie between line.start
and line.end.
Implementations of this method must not
clear or modify the existing intersections in list.
The parameter which has to be one of
Intersection.ALL, Intersection.CLOSEST,
Intersection.ANY. It determines if all intersections
have to be added to the list, only the closest (minimal
value of Intersection.parameter), or an arbitrary
of the set of all intersections. Only in case of ALL,
the return value of this method is precise.
If specific intersection points should be excluded from the list
of computed intersections, they have to be specified in
excludeStart and excludeEnd.
The intersection point of excludeStart has to be the
starting point of line, the intersection point of
excludeEnd has to be the end point of line.
The exclusion of intersections is a useful feature for
ray-tracing, e.g., when a ray is re-emitted at an intersection point
in another direction.
line - a linewhich - one of Intersection.ALL,
Intersection.CLOSEST, Intersection.ANY, this
determines which intersections have to be added to listlist - the intersections are added to this listexcludeStart - intersection at start point which shall be excluded, or nullexcludeEnd - intersection at end point which shall be excluded, or null
true iff the beginning of the line lies
within the volume (i.e., if the line starts within the volume or
enters the volume at the starting point); however note that the returned
value is valid only if which == Intersection.ALL
|
||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | |||||||