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HxRgbStretch.h

00001 /*
00002  *  Copyright (c) 2000, University of Amsterdam, The Netherlands.
00003  *  All rights reserved.
00004  *
00005  *  Author(s):
00006  *  Dennis Koelma (koelma@wins.uva.nl)
00007  *
00008  */
00009 
00010 #ifndef HxRgbStretch_h
00011 #define HxRgbStretch_h
00012 
00013 #include "HxTagList.h"
00014 #include "HxClassName.h"
00015 #include "HxColConvert.h"
00016 
00017 
00021 template<class ValT, class ValDoubleT>
00022 class HxRgbStretch
00023 {
00024 public:
00026     typedef ValDoubleT ArithTypeDouble;
00027 
00029                         HxRgbStretch(HxTagList& tags)
00030                             {
00031                                 _lowVal = HxGetTag(tags, "lowVal", double(0));
00032                                 _highVal = HxGetTag(tags, "highVal", double(255));
00033                                 _interval = _highVal - _lowVal;
00034                             }
00035 
00037     int                 doIt(const ValT& pixV)
00038                             {
00039                                 HxVec3Double v = (HxVec3Double) pixV;
00040                                 int x = (int) (((v.x() - _lowVal) / _interval) * 255);
00041                                 int y = (int) (((v.y() - _lowVal) / _interval) * 255);
00042                                 int z = (int) (((v.z() - _lowVal) / _interval) * 255);
00043                                 return (255 << 24) | (x << 16) | (y << 8) | z;
00044                             }
00045 
00047     int                 doItDouble(const ValDoubleT& pixV)
00048                             {
00049                                 HxVec3Double v = (HxVec3Double) pixV;
00050                                 int x = (int) (((v.x() - _lowVal) / _interval) * 255);
00051                                 int y = (int) (((v.y() - _lowVal) / _interval) * 255);
00052                                 int z = (int) (((v.z() - _lowVal) / _interval) * 255);
00053                                 return (255 << 24) | (x << 16) | (y << 8) | z;
00054                             }
00055 
00057     static HxString     className()
00058                             { return HxString("Stretch"); }
00059 
00060 private:
00061     double              _lowVal;
00062     double              _highVal;
00063     double              _interval;
00064 };
00065 
00066 
00067 #endif

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