volmetrics
annotate src/image.cc @ 22:4e120dcd55ec
added shaders that just draw
| author | Eleni Maria Stea <elene.mst@gmail.com> |
|---|---|
| date | Thu, 24 Apr 2014 20:47:48 +0300 |
| parents | 927c29b93009 |
| children |
| rev | line source |
|---|---|
| elene@3 | 1 #include <imago2.h> |
| elene@3 | 2 |
| elene@3 | 3 #include "image.h" |
| elene@3 | 4 |
| elene@3 | 5 Image::Image() |
| elene@3 | 6 { |
| elene@3 | 7 pixels = 0; |
| elene@3 | 8 width = 0; |
| elene@3 | 9 height = 0; |
| elene@3 | 10 } |
| elene@3 | 11 |
| elene@3 | 12 Image::~Image() |
| elene@3 | 13 { |
| elene@3 | 14 delete [] pixels; |
| elene@3 | 15 } |
| elene@3 | 16 |
| elene@4 | 17 //copy constructor - assignment operator |
| elene@4 | 18 Image::Image(const Image &img) |
| elene@4 | 19 { |
| elene@4 | 20 pixels = 0; |
| elene@4 | 21 set_pixels(img.pixels, img.width, img.height); |
| elene@4 | 22 } |
| elene@4 | 23 |
| elene@4 | 24 Image &Image::operator = (const Image &img) |
| elene@4 | 25 { |
| elene@4 | 26 if(&img != this) { |
| elene@4 | 27 set_pixels(img.pixels, img.width, img.height); |
| elene@4 | 28 } |
| elene@4 | 29 return *this; |
| elene@4 | 30 } |
| elene@4 | 31 |
| elene@4 | 32 //move constructor - move operator c++11 R-value reference to image |
| elene@4 | 33 Image::Image(Image &&img) |
| elene@4 | 34 { |
| elene@4 | 35 pixels = img.pixels; |
| elene@4 | 36 width = img.width; |
| elene@4 | 37 height = img.height; |
| elene@4 | 38 |
| elene@4 | 39 img.pixels = 0; |
| elene@4 | 40 img.width = 0; |
| elene@4 | 41 img.height = 0; |
| elene@4 | 42 } |
| elene@4 | 43 |
| elene@4 | 44 Image &Image::operator = (Image &&img) |
| elene@4 | 45 { |
| elene@4 | 46 if(&img != this) { |
| elene@4 | 47 pixels = img.pixels; |
| elene@4 | 48 width = img.width; |
| elene@4 | 49 height = img.height; |
| elene@4 | 50 |
| elene@4 | 51 img.pixels = 0; |
| elene@4 | 52 img.width = 0; |
| elene@4 | 53 img.height = 0; |
| elene@4 | 54 } |
| elene@4 | 55 |
| elene@4 | 56 return *this; |
| elene@4 | 57 } |
| elene@4 | 58 |
| elene@3 | 59 bool Image::load(const char *fname) |
| elene@3 | 60 { |
| elene@3 | 61 int new_width, new_height; |
| elene@3 | 62 float *new_pixels = (float*)img_load_pixels(fname, &new_width, &new_height, IMG_FMT_GREYF); |
| elene@3 | 63 |
| elene@3 | 64 if(!new_pixels) { |
| elene@3 | 65 fprintf(stderr, "Failed to load image: %s\n", fname); |
| elene@3 | 66 return false; |
| elene@3 | 67 } |
| elene@3 | 68 |
| elene@3 | 69 set_pixels(new_pixels, new_width, new_height); |
| elene@3 | 70 img_free_pixels(new_pixels); |
| elene@3 | 71 return true; |
| elene@3 | 72 } |
| elene@3 | 73 |
| elene@3 | 74 float *Image::get_pixels() |
| elene@3 | 75 { |
| elene@3 | 76 return pixels; |
| elene@3 | 77 } |
| elene@3 | 78 |
| elene@3 | 79 const float *Image::get_pixels() const |
| elene@3 | 80 { |
| elene@3 | 81 return pixels; |
| elene@3 | 82 } |
| elene@3 | 83 |
| elene@3 | 84 void Image::set_pixels(const float *pixels, int width, int height) |
| elene@3 | 85 { |
| elene@3 | 86 if(!pixels) |
| elene@3 | 87 return; |
| elene@3 | 88 |
| elene@3 | 89 delete [] this->pixels; |
| elene@3 | 90 |
| elene@3 | 91 this->pixels = new float[width * height]; |
| elene@3 | 92 for(int i=0; i<width * height; i++) { |
| elene@3 | 93 this->pixels[i] = pixels[i]; |
| elene@3 | 94 } |
| elene@3 | 95 this->width = width; |
| elene@3 | 96 this->height = height; |
| elene@3 | 97 } |
| elene@3 | 98 |
| elene@3 | 99 int Image::get_width() const |
| elene@3 | 100 { |
| elene@3 | 101 return width; |
| elene@3 | 102 } |
| elene@3 | 103 |
| elene@3 | 104 int Image::get_height() const |
| elene@3 | 105 { |
| elene@3 | 106 return height; |
| elene@3 | 107 } |