Vips.Image.getpoint (original) (raw)
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.
The result array has an element for each band. If unpack_complex is set, pixels in complex images are returned as double-length arrays.
This method is not directly available to language bindings.
Parameters
vector
Type: 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 caller of the method takes ownership of the returned data, and is responsible for freeing it. |
n
Type: int*
Length of output vector.
The argument will be set by the function.
x
Type: int
Position to read.
y
Type: int
Position to read.
...
Type: ``
NULL-terminated list of optional named arguments.
Return value
Type: int
0 on success, or -1 on error.