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LibpngImageFactory Class Reference

#include <LibpngImage.h>

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Public Member Functions

LibpngImagecreateLibpngImageToRead (char *filename, BoundingBox< double > bbox, double resx, double resy)
 Create an LibpngImage object, for reading.

Detailed Description

Author
Institut national de l'information géographique et forestière

Member Function Documentation

LibpngImage * LibpngImageFactory::createLibpngImageToRead ( char *  filename,
BoundingBox< double >  bbox,
double  resx,
double  resy 
)

Create an LibpngImage object, for reading.

Bbox and resolutions are not present in the PNG file, so we precise them. All other informations are extracted from PNG header. We have to check consistency between provided bbox and resolutions and read image's dimensions.

Negative resolutions leads to georeferencement calculation. Both resolutions will be equals to 1 and the bounding box will be (0,0,width,height).

Parameters
[in]filenamepath to image file
[in]bboxbounding box
[in]resxX wise resolution.
[in]resyY wise resolution.
Returns
a LibpngImage object pointer, NULL if error

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