Unigine::DatasetRasterPosResolver Class

DatasetRasterPosResolver Class

Members

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void getGeodeticPosition ( int x, int y, double & latitude, double & longitude ) #

Performs conversion of raster coordinates (x, y) of a given point to geodetic coordinates (latitude, longitude) and puts them to latitude and longitude respectively.

Arguments

• int x - X coordinate.
• int y - Y coordinate.
• double & latitude - Latitude coordinate.
• double & longitude - Longitude coordinate.

double getOriginX ( ) #

Returns the X coordinate of the origin.

Return value

X coordinate of the origin.

double getOriginY ( ) #

Returns the Y coordinate of the origin.

Return value

Y coordinate of the origin.

const char * getProjection ( ) #

Returns current projection reference string.

Return value

Projection reference string.

int getRasterPosition ( double latitude, double longitude, int & x, int & y ) #

Performs conversion of geodetic coordinates (latitude, longitude) of a given point to raster coordinates (x, y) and puts them to x and y respectively.

Arguments

• double latitude - Latitude coordinate.
• double longitude - Longitude coordinate.
• int & x - X coordinate.
• int & y - Y coordinate.

Return value

1 if resulting X coordinate is in the range [0, RasterSize_X] and Y coordinate is in the range [0, RasterSize_Y]; otherwise 0

int getRasterPosition ( double latitude, double longitude, float & x, float & y ) #

Performs conversion of geodetic coordinates (latitude, longitude) of a given point to raster coordinates (x, y) and puts them to x and y respectively.

Arguments

• double latitude - Latitude coordinate.
• double longitude - Longitude coordinate.
• float & x - X coordinate.
• float & y - Y coordinate.

Return value

1 if resulting X and Y coordinates are in the range [0.0f, 1.0f]; otherwise 0

void getRasterPositions ( double * latitudes, double * longitude, int size, int * ret_x, int * ret_y, bool * ret_pixels ) #

Performs conversion of geodetic coordinates (latitude, longitude) of given points specified in corresponding arrays to raster coordinates (x, y) and puts them to corresponding return arrays.

Arguments

• double * latitudes - Array with latitude coordinates.
• double * longitude - Array with longitude coordinates.
• int size - Number of elements in coordinate arrays.
• int * ret_x - Return array with X coordinates.
• int * ret_y - Return array with Y coordinates.
• bool * ret_pixels - Array of conversion results, where each element corresponding to a certain point is determined as follows: 1 if resulting X coordinate is in the range [0, RasterSize_X] and Y coordinate is in the range [0, RasterSize_Y]; otherwise 0

void getRasterPositions ( double * latitudes, double * longitude, int size, float * ret_x, float * ret_y, bool * ret_pixels ) #

Performs conversion of geodetic coordinates (latitude, longitude) of given points specified in corresponding arrays to raster coordinates (x, y) and puts them to corresponding return arrays.

Arguments

• double * latitudes - Array with latitude coordinates.
• double * longitude - Array with longitude coordinates.
• int size - Number of elements in coordinate arrays.
• float * ret_x - Return array with X coordinates.
• float * ret_y - Return array with Y coordinates.
• bool * ret_pixels - Array of conversion results, where each element corresponding to a certain point is determined as follows: 1 if resulting X and Y coordinates are in the range [0.0f, 1.0f]; otherwise 0

int getRasterSizeX ( ) #

Returns raster size along the X axis.

Return value

Raster size along the X axis.

int getRasterSizeY ( ) #

Returns raster size along the Y axis.

Return value

Raster size along the Y axis.

double getResolutionX ( ) #

Returns resolution along the X axis.

Return value

Resolution along the X axis.

double getResolutionY ( ) #

Returns resolution along the Y axis.

Return value

Resolution along the Y axis.

Ptr<DatasetRasterPosResolver> create ( const double * geotransform, const char * projection, int size_x, int size_y ) #

Creates a DatasetRasterPosResolver with specified parameters.

Arguments

• const double * geotransform - A GDAL geotransform array:
  • geotransform[0] - top left x
  • geotransform[1] - w-e pixel resolution
  • geotransform[2] - rotation, 0 if image is "north up"
  • geotransform[3] - top left y
  • geotransform[4] - rotation, 0 if image is "north up"
  • geotransform[5] - n-s pixel resolution
• const char * projection - Projection reference string.
• int size_x - Size along the X axis.
• int size_y - Size along the Y axis.

Return value

DatasetRasterPosResolver smart pointer.