Get pixel array of float images in XSI... 2005-01-25 - By Aloys Baillet
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Hi all,
I'm currently trying to read the color of a floating point image clip in XSI.
Unfortunately the only information I could find to retrieve the color
value of each pixel was "The data is formatted as an array of pixel
color values, row by row." from the SDK doc.
Then I tried to read the data in that way:
<code>
// ---[ Get Image properties and pixels
]-- ---- ---- ---- ---- ---- ---- ---- ---- ----
const void * pixels = image.GetPixelArray();
long i_max = image.GetResX();
long j_max = image.GetResY();
long nb_chan = image.GetChannelSize();
long pix_size = image.GetChannelSize();
long max_size = image.GetPixelArraySize();
float r, g, b;
long buf_idx = 0;
if (pix_size == sizeof(float)){
for (long i=0; i<i_max; i++){
for (long j=0; j<j_max; j++){
buf_idx = (i + j*i_max)*nb_chan;
memcpy(&r, (float*)pixels + buf_idx, pix_size);
buf_idx += pix_size;
memcpy(&g, (float*)pixels + buf_idx, pix_size);
buf_idx +=pix_size;
memcpy(&b, (float*)pixels + buf_idx, pix_size);
k++;
}
}
}
</code>
But I didn't get the expected values...
So has anyone allready tried to read float pixels in C++ in XSI?
Or maybe somebody at Soft could help on this one?
Thank you!
--
Aloys Baillet - TD / R&D @ La Maison - www.alamaison.fr
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