gpuray_glsl

annotate src/image.cc @ 5:000017955721

fixed the cone normal
author John Tsiombikas <nuclear@member.fsf.org>
date Tue, 11 Nov 2014 20:25:59 +0200
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nuclear@0 1 #include <stdio.h>
nuclear@0 2 #include <string.h>
nuclear@0 3 #include <errno.h>
nuclear@0 4 #include "image.h"
nuclear@0 5 #include "material.h"
nuclear@0 6 #include <imago2.h>
nuclear@0 7
nuclear@0 8 Image::Image()
nuclear@0 9 {
nuclear@0 10 pixels = 0;
nuclear@0 11 xsz = ysz = 0;
nuclear@0 12 }
nuclear@0 13
nuclear@0 14 Image::Image(int xsz, int ysz)
nuclear@0 15 {
nuclear@0 16 pixels = 0;
nuclear@0 17 set_pixels(xsz, ysz, 0);
nuclear@0 18 }
nuclear@0 19
nuclear@0 20 Image::~Image()
nuclear@0 21 {
nuclear@0 22 delete [] pixels;
nuclear@0 23 }
nuclear@0 24
nuclear@0 25 void Image::set_pixels(int xsz, int ysz, const Color *pix)
nuclear@0 26 {
nuclear@0 27 delete [] pixels;
nuclear@0 28
nuclear@0 29 pixels = new Color[xsz * ysz];
nuclear@0 30 this->xsz = xsz;
nuclear@0 31 this->ysz = ysz;
nuclear@0 32
nuclear@0 33 if(pix) {
nuclear@0 34 memcpy(pixels, pix, xsz * ysz * sizeof *pixels);
nuclear@0 35 }
nuclear@0 36 }
nuclear@0 37
nuclear@0 38 bool Image::load(const char *fname)
nuclear@0 39 {
nuclear@0 40 int xsz, ysz;
nuclear@0 41 Color *img = (Color*)img_load_pixels(fname, &xsz, &ysz, IMG_FMT_RGBF);
nuclear@0 42 if(!img) {
nuclear@0 43 return false;
nuclear@0 44 }
nuclear@0 45
nuclear@0 46 /* convert the pixels to linear color space */
nuclear@0 47 for(int i=0; i<xsz*ysz; i++) {
nuclear@0 48 img[i].x = pow(img[i].x, 2.2);
nuclear@0 49 img[i].y = pow(img[i].y, 2.2);
nuclear@0 50 img[i].z = pow(img[i].z, 2.2);
nuclear@0 51 }
nuclear@0 52
nuclear@0 53 set_pixels(xsz, ysz, img);
nuclear@0 54 img_free_pixels(img);
nuclear@0 55 return true;
nuclear@0 56 }
nuclear@0 57
nuclear@0 58
nuclear@0 59 bool Image::save(const char *fname) const
nuclear@0 60 {
nuclear@0 61 if(!pixels) {
nuclear@0 62 return false;
nuclear@0 63 }
nuclear@0 64
nuclear@0 65 if(img_save_pixels(fname, pixels, xsz, ysz, IMG_FMT_RGBAF) == -1) {
nuclear@0 66 return false;
nuclear@0 67 }
nuclear@0 68 return true;
nuclear@0 69 }