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799 lines
29 KiB
C
799 lines
29 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkFixedPointVolumeRayCastMapper.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkFixedPointVolumeRayCastMapper
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* @brief A fixed point mapper for volumes
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*
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* This is a software ray caster for rendering volumes in vtkImageData.
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* It works with all input data types and up to four components. It performs
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* composite or MIP rendering, and can be intermixed with geometric data.
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* Space leaping is used to speed up the rendering process. In addition,
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* calculation are performed in 15 bit fixed point precision. This mapper
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* is threaded, and will interleave scan lines across processors.
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*
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* WARNING: This ray caster may not produce consistent results when
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* the number of threads exceeds 1. The class warns if the number of
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* threads > 1. The differences may be subtle. Applications should decide
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* if the trade-off in performance is worth the lack of consistency.
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*
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* This mapper is a good replacement for vtkVolumeRayCastMapper EXCEPT:
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* - it does not do isosurface ray casting
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* - it does only interpolate before classify compositing
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* - it does only maximum scalar value MIP
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*
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* The vtkVolumeRayCastMapper CANNOT be used in these instances when a
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* vtkFixedPointVolumeRayCastMapper can be used:
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* - if the data is not unsigned char or unsigned short
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* - if the data has more than one component
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*
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* This mapper handles all data type from unsigned char through double.
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* However, some of the internal calcultions are performed in float and
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* therefore even the full float range may cause problems for this mapper
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* (both in scalar data values and in spacing between samples).
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*
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* Space leaping is performed by creating a sub-sampled volume. 4x4x4
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* cells in the original volume are represented by a min, max, and
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* combined gradient and flag value. The min max volume has three
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* unsigned shorts per 4x4x4 group of cells from the original volume -
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* one reprenting the minimum scalar index (the scalar value adjusted
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* to fit in the 15 bit range), the maximum scalar index, and a
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* third unsigned short which is both the maximum gradient opacity in
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* the neighborhood (an unsigned char) and the flag that is filled
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* in for the current lookup tables to indicate whether this region
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* can be skipped.
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*
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* @sa
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* vtkVolumeMapper
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*/
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#ifndef vtkFixedPointVolumeRayCastMapper_h
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#define vtkFixedPointVolumeRayCastMapper_h
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#include "vtkRenderingVolumeModule.h" // For export macro
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#include "vtkVolumeMapper.h"
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#define VTKKW_FP_SHIFT 15
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#define VTKKW_FPMM_SHIFT 17
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#define VTKKW_FP_MASK 0x7fff
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#define VTKKW_FP_SCALE 32767.0
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class vtkMatrix4x4;
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class vtkMultiThreader;
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class vtkPlaneCollection;
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class vtkRenderer;
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class vtkTimerLog;
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class vtkVolume;
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class vtkTransform;
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class vtkRenderWindow;
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class vtkColorTransferFunction;
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class vtkPiecewiseFunction;
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class vtkFixedPointVolumeRayCastMIPHelper;
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class vtkFixedPointVolumeRayCastCompositeHelper;
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class vtkFixedPointVolumeRayCastCompositeGOHelper;
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class vtkFixedPointVolumeRayCastCompositeGOShadeHelper;
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class vtkFixedPointVolumeRayCastCompositeShadeHelper;
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class vtkVolumeRayCastSpaceLeapingImageFilter;
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class vtkDirectionEncoder;
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class vtkEncodedGradientShader;
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class vtkFiniteDifferenceGradientEstimator;
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class vtkRayCastImageDisplayHelper;
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class vtkFixedPointRayCastImage;
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class vtkDataArray;
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// Forward declaration needed for use by friend declaration below.
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VTK_THREAD_RETURN_TYPE FixedPointVolumeRayCastMapper_CastRays( void *arg );
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VTK_THREAD_RETURN_TYPE vtkFPVRCMSwitchOnDataType( void *arg );
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class VTKRENDERINGVOLUME_EXPORT vtkFixedPointVolumeRayCastMapper : public vtkVolumeMapper
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{
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public:
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static vtkFixedPointVolumeRayCastMapper *New();
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vtkTypeMacro(vtkFixedPointVolumeRayCastMapper,vtkVolumeMapper);
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void PrintSelf( ostream& os, vtkIndent indent );
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//@{
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/**
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* Set/Get the distance between samples used for rendering
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* when AutoAdjustSampleDistances is off, or when this mapper
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* has more than 1 second allocated to it for rendering.
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*/
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vtkSetMacro( SampleDistance, float );
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vtkGetMacro( SampleDistance, float );
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//@}
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//@{
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/**
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* Set/Get the distance between samples when interactive rendering is happening.
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* In this case, interactive is defined as this volume mapper having less than 1
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* second allocated for rendering. When AutoAdjustSampleDistance is On, and the
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* allocated render time is less than 1 second, then this InteractiveSampleDistance
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* will be used instead of the SampleDistance above.
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*/
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vtkSetMacro( InteractiveSampleDistance, float );
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vtkGetMacro( InteractiveSampleDistance, float );
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//@}
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//@{
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/**
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* Sampling distance in the XY image dimensions. Default value of 1 meaning
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* 1 ray cast per pixel. If set to 0.5, 4 rays will be cast per pixel. If
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* set to 2.0, 1 ray will be cast for every 4 (2 by 2) pixels. This value
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* will be adjusted to meet a desired frame rate when AutoAdjustSampleDistances
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* is on.
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*/
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vtkSetClampMacro( ImageSampleDistance, float, 0.1f, 100.0f );
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vtkGetMacro( ImageSampleDistance, float );
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//@}
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//@{
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/**
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* This is the minimum image sample distance allow when the image
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* sample distance is being automatically adjusted.
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*/
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vtkSetClampMacro( MinimumImageSampleDistance, float, 0.1f, 100.0f );
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vtkGetMacro( MinimumImageSampleDistance, float );
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//@}
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//@{
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/**
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* This is the maximum image sample distance allow when the image
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* sample distance is being automatically adjusted.
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*/
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vtkSetClampMacro( MaximumImageSampleDistance, float, 0.1f, 100.0f );
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vtkGetMacro( MaximumImageSampleDistance, float );
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//@}
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//@{
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/**
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* If AutoAdjustSampleDistances is on, the the ImageSampleDistance
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* and the SampleDistance will be varied to achieve the allocated
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* render time of this prop (controlled by the desired update rate
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* and any culling in use). If this is an interactive render (more
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* than 1 frame per second) the SampleDistance will be increased,
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* otherwise it will not be altered (a binary decision, as opposed
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* to the ImageSampleDistance which will vary continuously).
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*/
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vtkSetClampMacro( AutoAdjustSampleDistances, int, 0, 1 );
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vtkGetMacro( AutoAdjustSampleDistances, int );
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vtkBooleanMacro( AutoAdjustSampleDistances, int );
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//@}
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//@{
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/**
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* Automatically compute the sample distance from the data spacing. When
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* the number of voxels is 8, the sample distance will be roughly 1/200
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* the average voxel size. The distance will grow proportionally to
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* numVoxels^(1/3) until it reaches 1/2 average voxel size when number of
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* voxels is 1E6. Note that ScalarOpacityUnitDistance is still taken into
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* account and if different than 1, will effect the sample distance.
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*/
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vtkSetClampMacro( LockSampleDistanceToInputSpacing, int, 0, 1 );
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vtkGetMacro( LockSampleDistanceToInputSpacing, int );
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vtkBooleanMacro( LockSampleDistanceToInputSpacing, int );
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//@}
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//@{
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/**
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* Set/Get the number of threads to use. This by default is equal to
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* the number of available processors detected.
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* WARNING: If number of threads > 1, results may not be consistent.
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*/
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void SetNumberOfThreads( int num );
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int GetNumberOfThreads();
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//@}
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//@{
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/**
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* If IntermixIntersectingGeometry is turned on, the zbuffer will be
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* captured and used to limit the traversal of the rays.
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*/
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vtkSetClampMacro( IntermixIntersectingGeometry, int, 0, 1 );
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vtkGetMacro( IntermixIntersectingGeometry, int );
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vtkBooleanMacro( IntermixIntersectingGeometry, int );
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//@}
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//@{
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/**
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* What is the image sample distance required to achieve the desired time?
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* A version of this method is provided that does not require the volume
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* argument since if you are using an LODProp3D you may not know this information.
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* If you use this version you must be certain that the ray cast mapper is
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* only used for one volume (and not shared among multiple volumes)
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*/
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float ComputeRequiredImageSampleDistance( float desiredTime,
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vtkRenderer *ren );
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float ComputeRequiredImageSampleDistance( float desiredTime,
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vtkRenderer *ren,
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vtkVolume *vol );
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//@}
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/**
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* WARNING: INTERNAL METHOD - NOT INTENDED FOR GENERAL USE
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* Initialize rendering for this volume.
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*/
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void Render( vtkRenderer *, vtkVolume * );
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unsigned int ToFixedPointPosition( float val );
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void ToFixedPointPosition( float in[3], unsigned int out[3] );
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unsigned int ToFixedPointDirection( float dir );
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void ToFixedPointDirection( float in[3], unsigned int out[3] );
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void FixedPointIncrement( unsigned int position[3], unsigned int increment[3] );
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void GetFloatTripleFromPointer( float v[3], float *ptr );
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void GetUIntTripleFromPointer( unsigned int v[3], unsigned int *ptr );
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void ShiftVectorDown( unsigned int in[3], unsigned int out[3] );
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int CheckMinMaxVolumeFlag( unsigned int pos[3], int c );
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int CheckMIPMinMaxVolumeFlag( unsigned int pos[3], int c, unsigned short maxIdx, int flip );
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void LookupColorUC( unsigned short *colorTable,
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unsigned short *scalarOpacityTable,
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unsigned short index,
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unsigned char color[4] );
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void LookupDependentColorUC( unsigned short *colorTable,
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unsigned short *scalarOpacityTable,
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unsigned short index[4],
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int components,
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unsigned char color[4] );
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void LookupAndCombineIndependentColorsUC(
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unsigned short *colorTable[4],
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unsigned short *scalarOpacityTable[4],
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unsigned short index[4],
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float weights[4],
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int components,
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unsigned char color[4] );
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int CheckIfCropped( unsigned int pos[3] );
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vtkGetObjectMacro( RenderWindow, vtkRenderWindow );
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vtkGetObjectMacro( MIPHelper, vtkFixedPointVolumeRayCastMIPHelper );
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vtkGetObjectMacro( CompositeHelper, vtkFixedPointVolumeRayCastCompositeHelper );
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vtkGetObjectMacro( CompositeGOHelper, vtkFixedPointVolumeRayCastCompositeGOHelper );
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vtkGetObjectMacro( CompositeGOShadeHelper, vtkFixedPointVolumeRayCastCompositeGOShadeHelper );
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vtkGetObjectMacro( CompositeShadeHelper, vtkFixedPointVolumeRayCastCompositeShadeHelper );
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vtkGetVectorMacro( TableShift, float, 4 );
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vtkGetVectorMacro( TableScale, float, 4 );
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vtkGetMacro( ShadingRequired, int );
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vtkGetMacro( GradientOpacityRequired, int );
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vtkGetObjectMacro( CurrentScalars, vtkDataArray );
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vtkGetObjectMacro( PreviousScalars, vtkDataArray );
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int *GetRowBounds() {return this->RowBounds;}
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unsigned short *GetColorTable(int c) {return this->ColorTable[c];}
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unsigned short *GetScalarOpacityTable(int c) {return this->ScalarOpacityTable[c];}
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unsigned short *GetGradientOpacityTable(int c) {return this->GradientOpacityTable[c];}
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vtkVolume *GetVolume() {return this->Volume;}
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unsigned short **GetGradientNormal() {return this->GradientNormal;}
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unsigned char **GetGradientMagnitude() {return this->GradientMagnitude;}
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unsigned short *GetDiffuseShadingTable(int c) {return this->DiffuseShadingTable[c];}
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unsigned short *GetSpecularShadingTable(int c) {return this->SpecularShadingTable[c];}
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void ComputeRayInfo( int x, int y,
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unsigned int pos[3],
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unsigned int dir[3],
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unsigned int *numSteps );
|
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void InitializeRayInfo( vtkVolume *vol );
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int ShouldUseNearestNeighborInterpolation( vtkVolume *vol );
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//@{
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/**
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* Set / Get the underlying image object. One will be automatically
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* created - only need to set it when using from an AMR mapper which
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* renders multiple times into the same image.
|
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*/
|
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void SetRayCastImage( vtkFixedPointRayCastImage * );
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vtkGetObjectMacro( RayCastImage, vtkFixedPointRayCastImage );
|
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//@}
|
||
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|
||
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int PerImageInitialization( vtkRenderer *, vtkVolume *, int,
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double *, double *, int * );
|
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void PerVolumeInitialization( vtkRenderer *, vtkVolume * );
|
||
|
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void PerSubVolumeInitialization( vtkRenderer *, vtkVolume *, int );
|
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|
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void RenderSubVolume();
|
||
|
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void DisplayRenderedImage( vtkRenderer *, vtkVolume * );
|
||
|
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void AbortRender();
|
||
|
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|
||
|
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void CreateCanonicalView( vtkVolume *volume,
|
||
|
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vtkImageData *image,
|
||
|
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int blend_mode,
|
||
|
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double viewDirection[3],
|
||
|
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double viewUp[3] );
|
||
|
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|
||
|
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/**
|
||
|
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* Get an estimate of the rendering time for a given volume / renderer.
|
||
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* Only valid if this mapper has been used to render that volume for
|
||
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* that renderer previously. Estimate is good when the viewing parameters
|
||
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* have not changed much since that last render.
|
||
|
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*/
|
||
|
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float GetEstimatedRenderTime( vtkRenderer *ren,
|
||
|
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vtkVolume *vol )
|
||
|
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{ return this->RetrieveRenderTime( ren, vol ); }
|
||
|
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float GetEstimatedRenderTime( vtkRenderer *ren )
|
||
|
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{ return this->RetrieveRenderTime( ren ); }
|
||
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|
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|
||
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//@{
|
||
|
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/**
|
||
|
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* Set/Get the window / level applied to the final color.
|
||
|
|
* This allows brightness / contrast adjustments on the
|
||
|
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* final image.
|
||
|
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* window is the width of the window.
|
||
|
|
* level is the center of the window.
|
||
|
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* Initial window value is 1.0
|
||
|
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* Initial level value is 0.5
|
||
|
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* window cannot be null but can be negative, this way
|
||
|
|
* values will be reversed.
|
||
|
|
* |window| can be larger than 1.0
|
||
|
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* level can be any real value.
|
||
|
|
*/
|
||
|
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vtkSetMacro( FinalColorWindow, float );
|
||
|
|
vtkGetMacro( FinalColorWindow, float );
|
||
|
|
vtkSetMacro( FinalColorLevel, float );
|
||
|
|
vtkGetMacro( FinalColorLevel, float );
|
||
|
|
//@}
|
||
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|
||
|
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|
||
|
|
// Here to be used by the mapper to tell the helper
|
||
|
|
// to flip the MIP comparison in order to support
|
||
|
|
// minimum intensity blending
|
||
|
|
vtkGetMacro( FlipMIPComparison, int );
|
||
|
|
|
||
|
|
/**
|
||
|
|
* WARNING: INTERNAL METHOD - NOT INTENDED FOR GENERAL USE
|
||
|
|
* Release any graphics resources that are being consumed by this mapper.
|
||
|
|
* The parameter window could be used to determine which graphic
|
||
|
|
* resources to release.
|
||
|
|
*/
|
||
|
|
virtual void ReleaseGraphicsResources(vtkWindow *);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
vtkFixedPointVolumeRayCastMapper();
|
||
|
|
~vtkFixedPointVolumeRayCastMapper();
|
||
|
|
|
||
|
|
// The helper class that displays the image
|
||
|
|
vtkRayCastImageDisplayHelper *ImageDisplayHelper;
|
||
|
|
|
||
|
|
// The distance between sample points along the ray
|
||
|
|
float SampleDistance;
|
||
|
|
float InteractiveSampleDistance;
|
||
|
|
|
||
|
|
// The distance between rays in the image
|
||
|
|
float ImageSampleDistance;
|
||
|
|
float MinimumImageSampleDistance;
|
||
|
|
float MaximumImageSampleDistance;
|
||
|
|
int AutoAdjustSampleDistances;
|
||
|
|
int LockSampleDistanceToInputSpacing;
|
||
|
|
|
||
|
|
// Saved values used to restore
|
||
|
|
float OldSampleDistance;
|
||
|
|
float OldImageSampleDistance;
|
||
|
|
|
||
|
|
// Internal method for computing matrices needed during
|
||
|
|
// ray casting
|
||
|
|
void ComputeMatrices( double volumeOrigin[3],
|
||
|
|
double volumeSpacing[3],
|
||
|
|
int volumeExtent[6],
|
||
|
|
vtkRenderer *ren,
|
||
|
|
vtkVolume *vol );
|
||
|
|
|
||
|
|
int ComputeRowBounds( vtkRenderer *ren,
|
||
|
|
int imageFlag, int rowBoundsFlag,
|
||
|
|
int volumeExtent[6]);
|
||
|
|
|
||
|
|
void CaptureZBuffer( vtkRenderer *ren );
|
||
|
|
|
||
|
|
friend VTK_THREAD_RETURN_TYPE FixedPointVolumeRayCastMapper_CastRays( void *arg );
|
||
|
|
friend VTK_THREAD_RETURN_TYPE vtkFPVRCMSwitchOnDataType( void *arg );
|
||
|
|
|
||
|
|
vtkMultiThreader *Threader;
|
||
|
|
|
||
|
|
vtkMatrix4x4 *PerspectiveMatrix;
|
||
|
|
vtkMatrix4x4 *ViewToWorldMatrix;
|
||
|
|
vtkMatrix4x4 *ViewToVoxelsMatrix;
|
||
|
|
vtkMatrix4x4 *VoxelsToViewMatrix;
|
||
|
|
vtkMatrix4x4 *WorldToVoxelsMatrix;
|
||
|
|
vtkMatrix4x4 *VoxelsToWorldMatrix;
|
||
|
|
|
||
|
|
vtkMatrix4x4 *VolumeMatrix;
|
||
|
|
|
||
|
|
vtkTransform *PerspectiveTransform;
|
||
|
|
vtkTransform *VoxelsTransform;
|
||
|
|
vtkTransform *VoxelsToViewTransform;
|
||
|
|
|
||
|
|
// This object encapsulated the image and all related information
|
||
|
|
vtkFixedPointRayCastImage *RayCastImage;
|
||
|
|
|
||
|
|
int *RowBounds;
|
||
|
|
int *OldRowBounds;
|
||
|
|
|
||
|
|
float *RenderTimeTable;
|
||
|
|
vtkVolume **RenderVolumeTable;
|
||
|
|
vtkRenderer **RenderRendererTable;
|
||
|
|
int RenderTableSize;
|
||
|
|
int RenderTableEntries;
|
||
|
|
|
||
|
|
void StoreRenderTime( vtkRenderer *ren, vtkVolume *vol, float t );
|
||
|
|
float RetrieveRenderTime( vtkRenderer *ren, vtkVolume *vol );
|
||
|
|
float RetrieveRenderTime( vtkRenderer *ren );
|
||
|
|
|
||
|
|
int IntermixIntersectingGeometry;
|
||
|
|
|
||
|
|
float MinimumViewDistance;
|
||
|
|
|
||
|
|
vtkColorTransferFunction *SavedRGBFunction[4];
|
||
|
|
vtkPiecewiseFunction *SavedGrayFunction[4];
|
||
|
|
vtkPiecewiseFunction *SavedScalarOpacityFunction[4];
|
||
|
|
vtkPiecewiseFunction *SavedGradientOpacityFunction[4];
|
||
|
|
int SavedColorChannels[4];
|
||
|
|
float SavedScalarOpacityDistance[4];
|
||
|
|
int SavedBlendMode;
|
||
|
|
vtkImageData *SavedParametersInput;
|
||
|
|
vtkTimeStamp SavedParametersMTime;
|
||
|
|
|
||
|
|
vtkImageData *SavedGradientsInput;
|
||
|
|
vtkTimeStamp SavedGradientsMTime;
|
||
|
|
|
||
|
|
float SavedSampleDistance;
|
||
|
|
|
||
|
|
|
||
|
|
unsigned short ColorTable[4][32768*3];
|
||
|
|
unsigned short ScalarOpacityTable[4][32768];
|
||
|
|
unsigned short GradientOpacityTable[4][256];
|
||
|
|
int TableSize[4];
|
||
|
|
float TableScale[4];
|
||
|
|
float TableShift[4];
|
||
|
|
|
||
|
|
float GradientMagnitudeScale[4];
|
||
|
|
float GradientMagnitudeShift[4];
|
||
|
|
|
||
|
|
unsigned short **GradientNormal;
|
||
|
|
unsigned char **GradientMagnitude;
|
||
|
|
unsigned short *ContiguousGradientNormal;
|
||
|
|
unsigned char *ContiguousGradientMagnitude;
|
||
|
|
|
||
|
|
int NumberOfGradientSlices;
|
||
|
|
|
||
|
|
vtkDirectionEncoder *DirectionEncoder;
|
||
|
|
|
||
|
|
vtkEncodedGradientShader *GradientShader;
|
||
|
|
|
||
|
|
vtkFiniteDifferenceGradientEstimator *GradientEstimator;
|
||
|
|
|
||
|
|
unsigned short DiffuseShadingTable [4][65536*3];
|
||
|
|
unsigned short SpecularShadingTable[4][65536*3];
|
||
|
|
|
||
|
|
int ShadingRequired;
|
||
|
|
int GradientOpacityRequired;
|
||
|
|
|
||
|
|
vtkDataArray *CurrentScalars;
|
||
|
|
vtkDataArray *PreviousScalars;
|
||
|
|
|
||
|
|
vtkRenderWindow *RenderWindow;
|
||
|
|
vtkVolume *Volume;
|
||
|
|
|
||
|
|
int ClipRayAgainstVolume( float rayStart[3],
|
||
|
|
float rayEnd[3],
|
||
|
|
float rayDirection[3],
|
||
|
|
double bounds[6] );
|
||
|
|
|
||
|
|
int UpdateColorTable( vtkVolume *vol );
|
||
|
|
int UpdateGradients( vtkVolume *vol );
|
||
|
|
int UpdateShadingTable( vtkRenderer *ren,
|
||
|
|
vtkVolume *vol );
|
||
|
|
void UpdateCroppingRegions();
|
||
|
|
|
||
|
|
void ComputeGradients( vtkVolume *vol );
|
||
|
|
|
||
|
|
int ClipRayAgainstClippingPlanes( float rayStart[3],
|
||
|
|
float rayEnd[3],
|
||
|
|
int numClippingPlanes,
|
||
|
|
float *clippingPlanes );
|
||
|
|
|
||
|
|
unsigned int FixedPointCroppingRegionPlanes[6];
|
||
|
|
unsigned int CroppingRegionMask[27];
|
||
|
|
|
||
|
|
// Get the ZBuffer value corresponding to location (x,y) where (x,y)
|
||
|
|
// are indexing into the ImageInUse image. This must be converted to
|
||
|
|
// the zbuffer image coordinates. Nearest neighbor value is returned.
|
||
|
|
float GetZBufferValue( int x, int y );
|
||
|
|
|
||
|
|
vtkFixedPointVolumeRayCastMIPHelper *MIPHelper;
|
||
|
|
vtkFixedPointVolumeRayCastCompositeHelper *CompositeHelper;
|
||
|
|
vtkFixedPointVolumeRayCastCompositeGOHelper *CompositeGOHelper;
|
||
|
|
vtkFixedPointVolumeRayCastCompositeShadeHelper *CompositeShadeHelper;
|
||
|
|
vtkFixedPointVolumeRayCastCompositeGOShadeHelper *CompositeGOShadeHelper;
|
||
|
|
|
||
|
|
// Some variables used for ray computation
|
||
|
|
float ViewToVoxelsArray[16];
|
||
|
|
float WorldToVoxelsArray[16];
|
||
|
|
float VoxelsToWorldArray[16];
|
||
|
|
|
||
|
|
double CroppingBounds[6];
|
||
|
|
|
||
|
|
int NumTransformedClippingPlanes;
|
||
|
|
float *TransformedClippingPlanes;
|
||
|
|
|
||
|
|
double SavedSpacing[3];
|
||
|
|
|
||
|
|
|
||
|
|
// Min Max structure used to do space leaping
|
||
|
|
unsigned short *MinMaxVolume;
|
||
|
|
int MinMaxVolumeSize[4];
|
||
|
|
vtkImageData *SavedMinMaxInput;
|
||
|
|
vtkImageData *MinMaxVolumeCache;
|
||
|
|
vtkVolumeRayCastSpaceLeapingImageFilter * SpaceLeapFilter;
|
||
|
|
|
||
|
|
void UpdateMinMaxVolume( vtkVolume *vol );
|
||
|
|
void FillInMaxGradientMagnitudes( int fullDim[3],
|
||
|
|
int smallDim[3] );
|
||
|
|
|
||
|
|
float FinalColorWindow;
|
||
|
|
float FinalColorLevel;
|
||
|
|
|
||
|
|
int FlipMIPComparison;
|
||
|
|
|
||
|
|
void ApplyFinalColorWindowLevel();
|
||
|
|
|
||
|
|
private:
|
||
|
|
vtkFixedPointVolumeRayCastMapper(const vtkFixedPointVolumeRayCastMapper&) VTK_DELETE_FUNCTION;
|
||
|
|
void operator=(const vtkFixedPointVolumeRayCastMapper&) VTK_DELETE_FUNCTION;
|
||
|
|
|
||
|
|
bool ThreadWarning;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
inline unsigned int vtkFixedPointVolumeRayCastMapper::ToFixedPointPosition( float val )
|
||
|
|
{
|
||
|
|
return static_cast<unsigned int>(val * VTKKW_FP_SCALE + 0.5);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void vtkFixedPointVolumeRayCastMapper::ToFixedPointPosition( float in[3], unsigned int out[3] )
|
||
|
|
{
|
||
|
|
out[0] = static_cast<unsigned int>(in[0] * VTKKW_FP_SCALE + 0.5);
|
||
|
|
out[1] = static_cast<unsigned int>(in[1] * VTKKW_FP_SCALE + 0.5);
|
||
|
|
out[2] = static_cast<unsigned int>(in[2] * VTKKW_FP_SCALE + 0.5);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline unsigned int vtkFixedPointVolumeRayCastMapper::ToFixedPointDirection( float dir )
|
||
|
|
{
|
||
|
|
return ((dir<0.0)?
|
||
|
|
(static_cast<unsigned int>(-dir * VTKKW_FP_SCALE + 0.5)):
|
||
|
|
(0x80000000+static_cast<unsigned int>(dir*VTKKW_FP_SCALE + 0.5)));
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void vtkFixedPointVolumeRayCastMapper::ToFixedPointDirection( float in[3], unsigned int out[3] )
|
||
|
|
{
|
||
|
|
out[0] = ((in[0]<0.0)?
|
||
|
|
(static_cast<unsigned int>(-in[0] * VTKKW_FP_SCALE + 0.5)):
|
||
|
|
(0x80000000+
|
||
|
|
static_cast<unsigned int>(in[0]*VTKKW_FP_SCALE + 0.5)));
|
||
|
|
out[1] = ((in[1]<0.0)?
|
||
|
|
(static_cast<unsigned int>(-in[1] * VTKKW_FP_SCALE + 0.5)):
|
||
|
|
(0x80000000+
|
||
|
|
static_cast<unsigned int>(in[1]*VTKKW_FP_SCALE + 0.5)));
|
||
|
|
out[2] = ((in[2]<0.0)?
|
||
|
|
(static_cast<unsigned int>(-in[2] * VTKKW_FP_SCALE + 0.5)):
|
||
|
|
(0x80000000+
|
||
|
|
static_cast<unsigned int>(in[2]*VTKKW_FP_SCALE + 0.5)));
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void vtkFixedPointVolumeRayCastMapper::FixedPointIncrement( unsigned int position[3], unsigned int increment[3] )
|
||
|
|
{
|
||
|
|
if ( increment[0]&0x80000000 )
|
||
|
|
{
|
||
|
|
position[0] += (increment[0]&0x7fffffff);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
position[0] -= increment[0];
|
||
|
|
}
|
||
|
|
if ( increment[1]&0x80000000 )
|
||
|
|
{
|
||
|
|
position[1] += (increment[1]&0x7fffffff);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
position[1] -= increment[1];
|
||
|
|
}
|
||
|
|
if ( increment[2]&0x80000000 )
|
||
|
|
{
|
||
|
|
position[2] += (increment[2]&0x7fffffff);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
position[2] -= increment[2];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
inline void vtkFixedPointVolumeRayCastMapper::GetFloatTripleFromPointer( float v[3], float *ptr )
|
||
|
|
{
|
||
|
|
v[0] = *(ptr);
|
||
|
|
v[1] = *(ptr+1);
|
||
|
|
v[2] = *(ptr+2);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void vtkFixedPointVolumeRayCastMapper::GetUIntTripleFromPointer( unsigned int v[3], unsigned int *ptr )
|
||
|
|
{
|
||
|
|
v[0] = *(ptr);
|
||
|
|
v[1] = *(ptr+1);
|
||
|
|
v[2] = *(ptr+2);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void vtkFixedPointVolumeRayCastMapper::ShiftVectorDown( unsigned int in[3],
|
||
|
|
unsigned int out[3] )
|
||
|
|
{
|
||
|
|
out[0] = in[0] >> VTKKW_FP_SHIFT;
|
||
|
|
out[1] = in[1] >> VTKKW_FP_SHIFT;
|
||
|
|
out[2] = in[2] >> VTKKW_FP_SHIFT;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline int vtkFixedPointVolumeRayCastMapper::CheckMinMaxVolumeFlag( unsigned int mmpos[3], int c )
|
||
|
|
{
|
||
|
|
vtkIdType offset =
|
||
|
|
static_cast<vtkIdType>(this->MinMaxVolumeSize[3]) *
|
||
|
|
( mmpos[2]*static_cast<vtkIdType>(
|
||
|
|
this->MinMaxVolumeSize[0]*this->MinMaxVolumeSize[1]) +
|
||
|
|
mmpos[1]*static_cast<vtkIdType>(this->MinMaxVolumeSize[0]) +
|
||
|
|
mmpos[0] ) + static_cast<vtkIdType>(c);
|
||
|
|
|
||
|
|
return ((*(this->MinMaxVolume + 3*offset + 2))&0x00ff);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline int vtkFixedPointVolumeRayCastMapper::CheckMIPMinMaxVolumeFlag( unsigned int mmpos[3], int c,
|
||
|
|
unsigned short maxIdx, int flip )
|
||
|
|
{
|
||
|
|
vtkIdType offset =
|
||
|
|
static_cast<vtkIdType>(this->MinMaxVolumeSize[3]) *
|
||
|
|
( mmpos[2]*static_cast<vtkIdType>(
|
||
|
|
this->MinMaxVolumeSize[0]*this->MinMaxVolumeSize[1]) +
|
||
|
|
mmpos[1]*static_cast<vtkIdType>(this->MinMaxVolumeSize[0]) +
|
||
|
|
mmpos[0] ) + static_cast<vtkIdType>(c);
|
||
|
|
|
||
|
|
if ( (*(this->MinMaxVolume + 3*offset + 2)&0x00ff) )
|
||
|
|
{
|
||
|
|
if (flip)
|
||
|
|
{
|
||
|
|
return ( *(this->MinMaxVolume + 3*offset) < maxIdx );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return ( *(this->MinMaxVolume + 3*offset + 1) > maxIdx );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void vtkFixedPointVolumeRayCastMapper::LookupColorUC( unsigned short *colorTable,
|
||
|
|
unsigned short *scalarOpacityTable,
|
||
|
|
unsigned short index,
|
||
|
|
unsigned char color[4] )
|
||
|
|
{
|
||
|
|
unsigned short alpha = scalarOpacityTable[index];
|
||
|
|
color[0] = static_cast<unsigned char>
|
||
|
|
((colorTable[3*index ]*alpha + 0x7fff)>>(2*VTKKW_FP_SHIFT - 8));
|
||
|
|
color[1] = static_cast<unsigned char>
|
||
|
|
((colorTable[3*index+1]*alpha + 0x7fff)>>(2*VTKKW_FP_SHIFT - 8));
|
||
|
|
color[2] = static_cast<unsigned char>
|
||
|
|
((colorTable[3*index+2]*alpha + 0x7fff)>>(2*VTKKW_FP_SHIFT - 8));
|
||
|
|
color[3] = static_cast<unsigned char>(alpha>>(VTKKW_FP_SHIFT - 8));
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void vtkFixedPointVolumeRayCastMapper::LookupDependentColorUC( unsigned short *colorTable,
|
||
|
|
unsigned short *scalarOpacityTable,
|
||
|
|
unsigned short index[4],
|
||
|
|
int components,
|
||
|
|
unsigned char color[4] )
|
||
|
|
{
|
||
|
|
unsigned short alpha;
|
||
|
|
switch ( components )
|
||
|
|
{
|
||
|
|
case 2:
|
||
|
|
alpha = scalarOpacityTable[index[1]];
|
||
|
|
color[0] = static_cast<unsigned char>
|
||
|
|
((colorTable[3*index[0] ]*alpha + 0x7fff)>>(2*VTKKW_FP_SHIFT - 8));
|
||
|
|
color[1] = static_cast<unsigned char>
|
||
|
|
((colorTable[3*index[0]+1]*alpha + 0x7fff)>>(2*VTKKW_FP_SHIFT - 8));
|
||
|
|
color[2] = static_cast<unsigned char>
|
||
|
|
((colorTable[3*index[0]+2]*alpha + 0x7fff)>>(2*VTKKW_FP_SHIFT - 8));
|
||
|
|
color[3] = static_cast<unsigned char>(alpha>>(VTKKW_FP_SHIFT - 8));
|
||
|
|
break;
|
||
|
|
case 4:
|
||
|
|
alpha = scalarOpacityTable[index[3]];
|
||
|
|
color[0] = static_cast<unsigned char>((index[0]*alpha + 0x7fff)>>VTKKW_FP_SHIFT );
|
||
|
|
color[1] = static_cast<unsigned char>((index[1]*alpha + 0x7fff)>>VTKKW_FP_SHIFT );
|
||
|
|
color[2] = static_cast<unsigned char>((index[2]*alpha + 0x7fff)>>VTKKW_FP_SHIFT );
|
||
|
|
color[3] = static_cast<unsigned char>(alpha>>(VTKKW_FP_SHIFT - 8));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
inline void vtkFixedPointVolumeRayCastMapper::LookupAndCombineIndependentColorsUC( unsigned short *colorTable[4],
|
||
|
|
unsigned short *scalarOpacityTable[4],
|
||
|
|
unsigned short index[4],
|
||
|
|
float weights[4],
|
||
|
|
int components,
|
||
|
|
unsigned char color[4] )
|
||
|
|
{
|
||
|
|
unsigned int tmp[4] = {0,0,0,0};
|
||
|
|
|
||
|
|
for ( int i = 0; i < components; i++ )
|
||
|
|
{
|
||
|
|
unsigned short alpha = static_cast<unsigned short>(static_cast<float>(scalarOpacityTable[i][index[i]])*weights[i]);
|
||
|
|
tmp[0] += static_cast<unsigned char>(((colorTable[i][3*index[i] ])*alpha + 0x7fff)>>(2*VTKKW_FP_SHIFT - 8));
|
||
|
|
tmp[1] += static_cast<unsigned char>(((colorTable[i][3*index[i]+1])*alpha + 0x7fff)>>(2*VTKKW_FP_SHIFT - 8));
|
||
|
|
tmp[2] += static_cast<unsigned char>(((colorTable[i][3*index[i]+2])*alpha + 0x7fff)>>(2*VTKKW_FP_SHIFT - 8));
|
||
|
|
tmp[3] += static_cast<unsigned char>(alpha>>(VTKKW_FP_SHIFT - 8));
|
||
|
|
}
|
||
|
|
|
||
|
|
color[0] = static_cast<unsigned char>((tmp[0]>255)?(255):(tmp[0]));
|
||
|
|
color[1] = static_cast<unsigned char>((tmp[1]>255)?(255):(tmp[1]));
|
||
|
|
color[2] = static_cast<unsigned char>((tmp[2]>255)?(255):(tmp[2]));
|
||
|
|
color[3] = static_cast<unsigned char>((tmp[3]>255)?(255):(tmp[3]));
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
inline int vtkFixedPointVolumeRayCastMapper::CheckIfCropped( unsigned int pos[3] )
|
||
|
|
{
|
||
|
|
int idx;
|
||
|
|
|
||
|
|
if ( pos[2] < this->FixedPointCroppingRegionPlanes[4] )
|
||
|
|
{
|
||
|
|
idx = 0;
|
||
|
|
}
|
||
|
|
else if ( pos[2] > this->FixedPointCroppingRegionPlanes[5] )
|
||
|
|
{
|
||
|
|
idx = 18;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
idx = 9;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( pos[1] >= this->FixedPointCroppingRegionPlanes[2] )
|
||
|
|
{
|
||
|
|
if ( pos[1] > this->FixedPointCroppingRegionPlanes[3] )
|
||
|
|
{
|
||
|
|
idx += 6;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
idx += 3;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( pos[0] >= this->FixedPointCroppingRegionPlanes[0] )
|
||
|
|
{
|
||
|
|
if ( pos[0] > this->FixedPointCroppingRegionPlanes[1] )
|
||
|
|
{
|
||
|
|
idx += 2;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
idx += 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return !(static_cast<unsigned int>(this->CroppingRegionFlags)
|
||
|
|
&this->CroppingRegionMask[idx]);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|