1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/image.cc	Sun Nov 09 13:03:36 2014 +0200
     1.3 @@ -0,0 +1,69 @@
     1.4 +#include <stdio.h>
     1.5 +#include <string.h>
     1.6 +#include <errno.h>
     1.7 +#include "image.h"
     1.8 +#include "material.h"
     1.9 +#include <imago2.h>
    1.10 +
    1.11 +Image::Image()
    1.12 +{
    1.13 +	pixels = 0;
    1.14 +	xsz = ysz = 0;
    1.15 +}
    1.16 +
    1.17 +Image::Image(int xsz, int ysz)
    1.18 +{
    1.19 +	pixels = 0;
    1.20 +	set_pixels(xsz, ysz, 0);
    1.21 +}
    1.22 +
    1.23 +Image::~Image()
    1.24 +{
    1.25 +	delete [] pixels;
    1.26 +}
    1.27 +
    1.28 +void Image::set_pixels(int xsz, int ysz, const Color *pix)
    1.29 +{
    1.30 +	delete [] pixels;
    1.31 +
    1.32 +	pixels = new Color[xsz * ysz];
    1.33 +	this->xsz = xsz;
    1.34 +	this->ysz = ysz;
    1.35 +
    1.36 +	if(pix) {
    1.37 +		memcpy(pixels, pix, xsz * ysz * sizeof *pixels);
    1.38 +	}
    1.39 +}
    1.40 +
    1.41 +bool Image::load(const char *fname)
    1.42 +{
    1.43 +	int xsz, ysz;
    1.44 +	Color *img = (Color*)img_load_pixels(fname, &xsz, &ysz, IMG_FMT_RGBF);
    1.45 +	if(!img) {
    1.46 +		return false;
    1.47 +	}
    1.48 +
    1.49 +	/* convert the pixels to linear color space */
    1.50 +	for(int i=0; i<xsz*ysz; i++) {
    1.51 +		img[i].x = pow(img[i].x, 2.2);
    1.52 +		img[i].y = pow(img[i].y, 2.2);
    1.53 +		img[i].z = pow(img[i].z, 2.2);
    1.54 +	}
    1.55 +
    1.56 +	set_pixels(xsz, ysz, img);
    1.57 +	img_free_pixels(img);
    1.58 +	return true;
    1.59 +}
    1.60 +
    1.61 +
    1.62 +bool Image::save(const char *fname) const
    1.63 +{
    1.64 +	if(!pixels) {
    1.65 +		return false;
    1.66 +	}
    1.67 +
    1.68 +	if(img_save_pixels(fname, pixels, xsz, ysz, IMG_FMT_RGBAF) == -1) {
    1.69 +		return false;
    1.70 +	}
    1.71 +	return true;
    1.72 +}