diff options
| -rw-r--r-- | main_simple_scanner.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/main_simple_scanner.cpp b/main_simple_scanner.cpp index 9b578d2..99fed35 100644 --- a/main_simple_scanner.cpp +++ b/main_simple_scanner.cpp @@ -124,7 +124,7 @@ public: const auto r = center - viewpoint; const int img_hw = image_width / 2, img_hh = image_height / 2; // iterate over every pixel on the image - for (int j = -img_hh; j < img_hh; ++j) { // axis y + for (int j = -img_hh + 1; j <= img_hh; ++j) { // axis y, transformation is needed for (int i = -img_hw; i < img_hw; ++i) { // axis x const vec3d off{ .x=1.0 * i / img_hw * half_width, @@ -134,7 +134,7 @@ public: const auto dir = r + off; // direction vector from camera to current pixel on screen const ray3d ray{viewpoint, dir}; // from camera to pixel (on the viewport) const auto pixel = color(ray); - image.set(i + img_hw, j + img_hh, pixel); + image.set(i + img_hw, -j + img_hh, pixel); } } return image; |