glviewvol
annotate src/image.cc @ 14:0d2447b9c512
did the histogram... doesn't seem to work right
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Thu, 01 Jan 2015 06:36:45 +0200 |
| parents | 32c4a7160350 |
| children |
| rev | line source |
|---|---|
| nuclear@12 | 1 /* |
| nuclear@12 | 2 glviewvol is an OpenGL 3D volume data viewer |
| nuclear@12 | 3 Copyright (C) 2014 John Tsiombikas <nuclear@member.fsf.org> |
| nuclear@12 | 4 |
| nuclear@12 | 5 This program is free software: you can redistribute it and/or modify |
| nuclear@12 | 6 it under the terms of the GNU General Public License as published by |
| nuclear@12 | 7 the Free Software Foundation, either version 3 of the License, or |
| nuclear@12 | 8 (at your option) any later version. |
| nuclear@12 | 9 |
| nuclear@12 | 10 This program is distributed in the hope that it will be useful, |
| nuclear@12 | 11 but WITHOUT ANY WARRANTY; without even the implied warranty of |
| nuclear@12 | 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| nuclear@12 | 13 GNU General Public License for more details. |
| nuclear@12 | 14 |
| nuclear@12 | 15 You should have received a copy of the GNU General Public License |
| nuclear@12 | 16 along with this program. If not, see <http://www.gnu.org/licenses/>. |
| nuclear@12 | 17 */ |
| nuclear@1 | 18 #include <string.h> |
| nuclear@0 | 19 #include <imago2.h> |
| nuclear@0 | 20 #include "image.h" |
| nuclear@0 | 21 |
| nuclear@0 | 22 Image::Image() |
| nuclear@0 | 23 { |
| nuclear@0 | 24 width = height = 0; |
| nuclear@0 | 25 pixels = 0; |
| nuclear@0 | 26 } |
| nuclear@0 | 27 |
| nuclear@3 | 28 void Image::destroy() |
| nuclear@0 | 29 { |
| nuclear@0 | 30 delete [] pixels; |
| nuclear@0 | 31 } |
| nuclear@0 | 32 |
| nuclear@0 | 33 bool Image::set_pixels(int x, int y, float *data) |
| nuclear@0 | 34 { |
| nuclear@0 | 35 float *new_pixels; |
| nuclear@0 | 36 try { |
| nuclear@0 | 37 new_pixels = new float[x * y]; |
| nuclear@0 | 38 } |
| nuclear@0 | 39 catch(...) { |
| nuclear@0 | 40 return false; |
| nuclear@0 | 41 } |
| nuclear@0 | 42 |
| nuclear@0 | 43 width = x; |
| nuclear@0 | 44 height = y; |
| nuclear@0 | 45 |
| nuclear@0 | 46 delete [] pixels; |
| nuclear@0 | 47 pixels = new_pixels; |
| nuclear@0 | 48 |
| nuclear@0 | 49 if(data) { |
| nuclear@0 | 50 memcpy(pixels, data, x * y * sizeof *data); |
| nuclear@0 | 51 } |
| nuclear@0 | 52 return true; |
| nuclear@0 | 53 } |
| nuclear@0 | 54 |
| nuclear@0 | 55 bool Image::load(const char *fname) |
| nuclear@0 | 56 { |
| nuclear@0 | 57 // TODO dicom loader ... ? |
| nuclear@0 | 58 |
| nuclear@0 | 59 int x, y; |
| nuclear@1 | 60 float *pixels = (float*)img_load_pixels(fname, &x, &y, IMG_FMT_GREYF); |
| nuclear@0 | 61 if(!pixels) { |
| nuclear@0 | 62 return false; |
| nuclear@0 | 63 } |
| nuclear@0 | 64 bool res = set_pixels(x, y, pixels); |
| nuclear@0 | 65 img_free_pixels(pixels); |
| nuclear@0 | 66 return res; |
| nuclear@0 | 67 } |