Method

VipsImagegetpoint

Declaration [src]

int
vips_getpoint (
  VipsImage* in,
  double** vector,
  int* n,
  int x,
  int y,
  ...
)

Description [src]

Reads a single pixel on an image.

The pixel values are returned in vector, the length of the array in n. You must free the array with g_free() when you are done with it.

See also: vips_draw_point().

This method is not directly available to language bindings.

Parameters

vector An array of double*
 

Output pixel value here.

 The argument will be set by the function.
 The length of the array is specified in the n argument.
 The instance takes ownership of the data, and is responsible for freeing it.
n int*
 

Length of output vector.

 The argument will be set by the function.
x int
 

Position to read.

y int
 

Position to read.

...
 

NULL-terminated list of optional named arguments.

Return value

Returns: int
 

0 on success, or -1 on error.