FGFS-4.1/OpenSceneGraph
4
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Added code for rescaling images.

Browse Source
This commit is contained in:
Robert Osfield
2005-02-01 09:02:01 +00:00
parent 7be056275b
commit a927d924e1
1 changed files with 35 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
examples/osgvolume/osgvolume.cpp
View File

@@ -872,6 +872,35 @@ struct ScaleOperator
inline void rgba(float& r,float& g,float& b,float& a) const { r*= _scale; g*=_scale; b*=_scale; a*=_scale; }
};
struct RecordRowOperator
{
RecordRowOperator(unsigned int num):_colours(num),_pos(0) {}
mutable std::vector<osg::Vec4> _colours;
mutable unsigned int _pos;
inline void luminance(float l) const { rgba(l,l,l,1.0f); }
inline void alpha(float a) const { rgba(1.0f,1.0f,1.0f,a); }
inline void luminance_alpha(float l,float a) const { rgba(l,l,l,a); }
inline void rgb(float r,float g,float b) const { rgba(r,g,b,1.0f); }
inline void rgba(float r,float g,float b,float a) const { _colours[_pos++].set(r,g,b,a); }
};
struct WriteRowOperator
{
WriteRowOperator():_pos(0) {}
WriteRowOperator(unsigned int num):_colours(num),_pos(0) {}
std::vector<osg::Vec4> _colours;
mutable unsigned int _pos;
inline void luminance(float& l) const { l = _colours[_pos++].red(); }
inline void alpha(float& a) const { a = _colours[_pos++].alpha(); }
inline void luminance_alpha(float& l,float& a) const { l = _colours[_pos].red(); a = _colours[_pos++].alpha(); }
inline void rgb(float& r,float& g,float& b) const { r = _colours[_pos].red(); g = _colours[_pos].green(); b = _colours[_pos].blue(); }
inline void rgba(float& r,float& g,float& b,float& a) const { r = _colours[_pos].red(); g = _colours[_pos].green(); b = _colours[_pos].blue(); a = _colours[_pos++].alpha(); }
};
osg::Image* readRaw(int sizeX, int sizeY, int sizeZ, int numberBytesPerComponent, int numberOfComponents, const std::string& endian, const std::string& raw_filename)
{
std::ifstream fin(raw_filename.c_str());
@@ -968,12 +997,18 @@ osg::Image* readRaw(int sizeX, int sizeY, int sizeZ, int numberBytesPerComponent
}
fin.close();
if (dataType!=GL_UNSIGNED_BYTE)
{
// need to convert to ubyte
}
return image.release();
}
int main( int argc, char **argv )
{