Package cz.fidentis.analyst.engines.distance.impl

Class MeshDistanceRCGPU

java.lang.Object

cz.fidentis.analyst.engines.distance.impl.MeshDistanceVisitorImpl

cz.fidentis.analyst.engines.distance.impl.MeshDistanceRCGPU

All Implemented Interfaces:

MeshVisitor, MeshDistanceVisitor, Serializable

public class MeshDistanceRCGPU
extends MeshDistanceVisitorImpl

This visitor searches for the closest points of the primary mesh (provided to the constructor) and inspected meshes by casting rays (RC) in the direction of normal vectors on the inspected mesh.

Computation is done on the GPU (if available). After GPU finishes visit (blocking), java-side reads the results from GPU.

The distance is computed either as absolute or relative. Absolute represents Euclidean distance (all numbers are positive). On the contrary, relative distance considers orientation of the visited mesh (determined by its normal vectors) and produces positive or negative distances depending on whether the primary mesh is "in front of" or "behind" the given vertex.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
MeshDistanceRCGPU(com.jogamp.opengl.GLContext context, Collection<MeshFacet> mainFacets, boolean relativeDistance)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	dispose()	Dispose all disposable resources this visitor was using.
boolean	isThreadSafe()	Returns true if the implementation is thread-safe and then a single visitor instance can be applied to multiple mesh facets simultaneously.
void	visitMeshFacet(MeshFacet comparedFacet)	The inspection method to be implemented by specific visitors.

Methods inherited from class cz.fidentis.analyst.engines.distance.impl.MeshDistanceVisitorImpl

getDistancesOfVisitedFacets, inParallel, relativeDistance

Methods inherited from class java.lang.Object

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

Constructor Details

MeshDistanceRCGPU

public MeshDistanceRCGPU(com.jogamp.opengl.GLContext context,
 Collection<MeshFacet> mainFacets,
 boolean relativeDistance)

Constructor. Creates 3D uniform grid and populates it with triangles from facets.

Parameters:

context - active OpenGL context on which makeCurrent() can be called now and during visit

mainFacets - facets from which to take triangles, at least two triangles must be present in total

relativeDistance - If true, then the visitor calculates the relative distances with respect to the normal vectors of source facets (normal vectors have to present), i.e., we can get negative distances.

Throws:

IllegalArgumentException - if some parameter is wrong

Method Details

visitMeshFacet

public void visitMeshFacet(MeshFacet comparedFacet)

Description copied from interface: MeshVisitor

The inspection method to be implemented by specific visitors.

Parameters:

comparedFacet - Mesh facet to be visited.

isThreadSafe

public boolean isThreadSafe()

Description copied from interface: MeshVisitor

Returns true if the implementation is thread-safe and then a single visitor instance can be applied to multiple mesh facets simultaneously.

Thread-safe implementation means that any read or write from/to the visitor's state is protected by synchronized.

Returns:

true if the implementation is thread-safe.

dispose

public void dispose()

Description copied from interface: MeshVisitor

Dispose all disposable resources this visitor was using. Distances can still be retrieved after calling this method. Subclasses should override this method if they need to dispose something.

Specified by:

dispose in interface MeshVisitor

Overrides:

dispose in class MeshDistanceVisitorImpl