00001 ////////////////////////////////////////////////////////////////////// 00002 // 9/6/02 Aaron Lefohn Scientific Computing and Imaging Institute 00003 // School of Computing University of Utah 00004 // 00005 // This library is free software; you can redistribute it and/or 00006 // modify it under the terms of the GNU Lesser General Public 00007 // License as published by the Free Software Foundation; either 00008 // version 2.1 of the License, or (at your option) any later version. 00009 // 00010 // This library is distributed in the hope that it will be useful, 00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 // Lesser General Public License for more details. 00014 // 00015 // You should have received a copy of the GNU Lesser General Public 00016 // License along with this library; if not, write to the Free Software 00017 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00018 00019 #ifndef GLIFT_NRRD_H 00020 #define GLIFT_NRRD_H 00021 00022 #ifdef GLIFT_NRRD 00023 00024 #include <GL/glew.h> 00025 #include <nrrd.h> 00026 #include <arrayGutz.h> 00027 #include <mathGutz.h> 00028 00029 namespace glift { 00030 00031 ////////////////////////////////////////////////////////////////////////// 00032 /// 00033 ///@name nrrd2GL 00034 /// Ensemble of functions that convert nrrd enums to OpenGL enums 00035 ///@{ 00036 /////////////////////////////////////////////////////////////////////// 00037 00038 00039 // File format enumeration 00040 enum GliftFormat { 00041 GliftFormatUnknown = -1, 00042 GliftFormatPGM = 0, 00043 GliftFormatPPM = 1, 00044 GliftFormatLast = 2 00045 }; 00046 00047 /// Error macro for nrrdExpression 00048 /// - Prevents 'nrrdExpr' from being evaluated if an error has occured 00049 /// Also sets 'e' to the error state if the current expr produces an error. 00050 /// - 'e' is an 'int' 00051 /// - 'nrrdExpr' is any valid nrrd function call 00052 #define nerr( nrrdExpr, e ) if( !e ) {e |= nrrdExpr;} 00053 00054 /// Conversion between OpenGL and Nrrd types 00055 GLenum typeN2GL( int nrrdType ); /// Convert a nrrdType to an OpenGL type 00056 GLenum typeGL2N( GLenum glType); /// Convert an OpenGL type to a nrrdType 00057 00058 // Return GliftFormatPGM, GliftFormatPPM, or GliftFormatUnknown 00059 GliftFormat gliftNrrdTypePNM( Nrrd* nIn ); 00060 00061 // Read just the Nrrd header of 'fileName' 00062 int gliftNrrdLoadHeader( Nrrd* nIn, const char* fileName ); 00063 00064 // Flip the y-axis for data in 'data' 00065 void gliftNrrdFlipYub( gutz::arrayo2ub& data ); 00066 00067 // Tile 3D scalar data only in X and Y 00068 // Result is written to "tiledData" 00069 void gliftNrrdTileDataXYub( const gutz::arrayw3ub& srcData3, const gutz::vec2i& tileSize, 00070 gutz::arrayo5ub& tiledData ); 00071 00072 // Untile XY-tiled (5D), 3D data into a standard 3D scalar format 00073 // - Opposite of "gliftNrrdTileDataXYub" 00074 void gliftNrrdUntileXYub( const gutz::arrayw5ub& tiledData, gutz::arrayo3ub& untiledData ); 00075 00076 // Downsample 'scalarVol' to 'resampledVol' with a box filter 00077 // unu resample -k box -s x(rescale.x) x(rescale.y) x(rescale.z) 00078 // - Set 'rescale' to 1.0 if you do NOT want the axis resampled. 00079 // Otherwise set to scaleFactor for that axis 00080 void gliftNrrdResampleVolBoxf( const gutz::vec3d& rescale, const gutz::arrayw3f& scalarVol, 00081 gutz::arrayo3f& resampledVol); 00082 00083 // Downsample 'scalarVol' to 'resampledVol' with a box filter 00084 // unu resample -k box -s x(rescale.x) x(rescale.y) x(rescale.z) 00085 // - Set 'rescale' to 1.0 if you do NOT want the axis resampled. 00086 // Otherwise set to scaleFactor for that axis 00087 void gliftNrrdResampleVolBoxub( const gutz::vec3d& rescale, const gutz::arrayw3ub& scalarVol, 00088 gutz::arrayo3ub& resampledVol); 00089 00090 00091 ///@} 00092 00093 } /// End of namespace glift 00094 00095 #endif 00096 00097 #endif 00098
