Coin Logo http://www.sim.no
http://www.coin3d.org

SoObliqueSlice Class Reference

Render a slice of the volume data, with any orientation. More...

#include <VolumeViz/nodes/SoObliqueSlice.h>

Inherits SoShape.

List of all members.

Public Types

enum  Interpolation { NEAREST, LINEAR }
enum  AlphaUse { ALPHA_AS_IS, ALPHA_OPAQUE, ALPHA_BINARY }

Static Public Member Functions

static void initClass (void)

Public Attributes

SoSFPlane plane
SoSFEnum interpolation
SoSFEnum alphaUse
SoSFNode alternateRep

Protected Member Functions

virtual void GLRender (SoGLRenderAction *action)
virtual void rayPick (SoRayPickAction *action)
virtual void generatePrimitives (SoAction *action)
virtual void computeBBox (SoAction *action, SbBox3f &box, SbVec3f &center)
virtual void write (SoWriteAction *action)
virtual SbBool readInstance (SoInput *in, unsigned short flags)

Friends

class SoObliqueSliceP


Detailed Description

Render a slice of the volume data, with any orientation.

Insert a node of this type after an SoVolumeData node in the scene graph to render a single slice from the full volume data set. The slice is specified as a plane with any orientation and position within the volume.

vol-obliqueslice.png

Note that this node will not work with OpenGL drivers too old to contain support for 3D-texturing. All OpenGL drivers of version 1.2 and onwards supports 3D-texturing, as does also older OpenGL drivers with the GL_EXT_texture3D extension. If none of these are available, and this node is still attempted used, a warning message will be output through Coin's SoDebugError::postWarning().

See also:
SoVolumeRender, SoOrthoSlice

SoVolumeTriangleStripSet, SoVolumeIndexedTriangleStripSet,

SoVolumeIndexedFaceSet, SoVolumeFaceSet

Since:
SIM Voleon 2.0

Member Enumeration Documentation

Enumeration of available types of voxel colors interpolation.

Enumerator:
NEAREST  For "in between" pixels of the screen rasterization, pick the color of the nearest voxel. Will give sharp edges and a distinct blocky look.
LINEAR  For "in between" pixels of the screen rasterization, interpolate by averaging the colors of several of the nearest voxels. Will give a smoother appearance, but sacrifies some "correctness" for appearance.

Enumerator:
ALPHA_AS_IS  The alpha channel is rendered 'as-is'.
ALPHA_OPAQUE  The alpha channel is ignored making the slice opaque.
ALPHA_BINARY  All alpha values not equal to 0 is threated as value 1.0f.


Member Data Documentation

The plane defining the slice.

Default value is an XY plane.

How to interpolate color values when rendering "in between" voxels. See SoObliqueSlice::Interpolation.

Default value is SoObliqueSlice::LINEAR.

How the alpha channel should be threated during rendering. See SoObliqueSlice::AlphaUse.

Default value is SoObliqueSlice::ALPHA_AS_IS

NOTE: support for this field not yet implemented in SIM Voleon.

Since:
SIM Voleon 2.0


The documentation for this class was generated from the following files:

Copyright © 1998-2004 by Systems in Motion AS. All rights reserved.

Generated on Mon Jul 27 22:01:15 2009 for SIMVoleon by Doxygen. 1.5.7.1