org.deegree.rendering.r3d.multiresolution.crit
Class ViewFrustumCrit

java.lang.Object
  org.deegree.rendering.r3d.multiresolution.crit.ViewFrustumCrit

All Implemented Interfaces:

LODCriterion

public class ViewFrustumCrit
extends Object
implements LODCriterion

LODCriterion for specifying LODs that are optimized for perspective rendering.

Version:

$Revision: 29127 $

Author:

Markus Schneider, last edited by: $Author: aschmitz $

Field Summary

Fields inherited from interface org.deegree.rendering.r3d.multiresolution.crit.LODCriterion

COARSEST, FINEST

Constructor Summary

ViewFrustumCrit(ViewParams viewParams, float maxPixelError, float zScale, int maxTextureSize, TextureManager[] textureManagers, float maxProjectedTexelSize)
Creates a new ViewFrustumCrit instance.

Method Summary

boolean	needsRefinement(Arc arc) Returns true, iff the region associated with the arc is inside the view frustum volume and the estimated screen projection error is greater than the maximum tolerable error.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ViewFrustumCrit

public ViewFrustumCrit(ViewParams viewParams,
                       float maxPixelError,
                       float zScale,
                       int maxTextureSize,
                       TextureManager[] textureManagers,
                       float maxProjectedTexelSize)

Creates a new ViewFrustumCrit instance.

Parameters:

viewParams - specifies the visible space volume (viewer position, view direction, etc.)

maxPixelError - maximum tolerable screen space error in pixels (in the rendered image)

zScale - scaling factor applied to z values of the mesh geometry (and bounding boxes)

maxTextureSize - maximum texture size (all fragments of the extracted LOD must have a size that is small enough, so they can be textured regarding this value and the finestTextureResolution parameter

textureManagers - texture managers that will be used to provide the textures

maxProjectedTexelSize -

Method Detail

needsRefinement

public boolean needsRefinement(Arc arc)

Returns true, iff the region associated with the arc is inside the view frustum volume and the estimated screen projection error is greater than the maximum tolerable error.

Specified by:

needsRefinement in interface LODCriterion

Parameters:

arc - arc to be checked

Returns:

true, iff the arc's region is inside the view frustum and the estimated screen projection error is greater than the maximum tolerable error

toString

public String toString()

Overrides:

toString in class Object