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Retrieve the RGB value of a pixel within an image
int PiGetPixelRGB( PhImage_t const *image,
unsigned short x,
unsigned short y,
PgColor_t *value );
ph
This function retrieves the RGB value of a pixel within an image.
The image argument is a pointer to a
PhImage_t
structure that defines the image to be queried,
while the x and y arguments specify the
coordinates of the pixel to be examined.
The value argument points to a
PgColor_t
where the result
of the query is stored.
- 0
- Success.
- -1
- An error occurred because the pixel was out of bounds or the
image type wasn't recognized.
Photon
Safety: | |
Interrupt handler |
No |
Signal handler |
No |
Thread |
No |
PgColor_t,
PhImage_t,
PiGetPixel(),
PiGetPixelFromData(),
PiSetPixel(),
PiSetPixelInData()
“Images”
in the Raw Drawing and Animation chapter of the
Photon Programmer's Guide
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