Re: [Boost-users] [GIL] Black filled or not ?

Subject: Re: [Boost-users] [GIL] Black filled or not ?
From: Lubomir Bourdev (lbourdev_at_[hidden])
Date: 2010-01-14 05:58:02

GIL core provides channel-level equivalents for some STL algorithms, including std::fill. These have the “static_” prefix since they are compile-time recursive:

rgb8_pixel_t p;
static_fill(p, 10);
assert(p == rgb8_pixel_t(10,10,10));

http://stlab.adobe.com/gil/html/group___color_base_algorithm_fill.html

Lubomir

On 1/13/10 11:24 PM, "Nicolas Lelong" <rotoglup_at_[hidden]> wrote:

Depending on if you can rely on a boost gil extension, numeric/pixel_numeric_operations.hpp has a zero_channels function.

This would give (untested) :

comp_pixel_t black;
zero_channels( black );
fill_pixels( tmpv, black );

Cheers,
Nicolas

On Wed, Jan 13, 2010 at 9:45 PM, Eloi Du Bois <eloi.du.bois_at_[hidden]> wrote:
Okay, I see.
But the problem is that I don't know the pixel number of channel. It have to be full generic.
That's why I am trying this (unsuccessfully):
    comp_pixel_t black;
    color_convert( bgil::gray8_pixel_t( 0 ), black );
    fill_pixels( tmpv, black);