diff options
| -rw-r--r-- | src/selection-chemistry.cpp | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/selection-chemistry.cpp b/src/selection-chemistry.cpp index 33f14e050..680a2e871 100644 --- a/src/selection-chemistry.cpp +++ b/src/selection-chemistry.cpp @@ -2504,11 +2504,14 @@ sp_selection_create_bitmap_copy () // Calculate the matrix that will be applied to the image so that it exactly overlaps the source objects NR::Matrix eek = sp_item_i2d_affine (SP_ITEM(parent_object)); NR::Matrix t; + + double shift_x = bbox.x0; + double shift_y = bbox.y1; if (res == PX_PER_IN) { // for default 90 dpi, snap it to pixel grid - t = NR::scale (1, -1) * NR::translate ((unsigned) (bbox.x0 + 0.5), (unsigned) (bbox.y1 + 0.5)) * eek.inverse(); - } else { - t = NR::scale (1, -1) * NR::translate (bbox.x0, bbox.y1) * eek.inverse(); + shift_x = round (shift_x); + shift_y = -round (-shift_y); // this gets correct rounding despite coordinate inversion, remove the negations when the inversion is gone } + t = NR::scale(1, -1) * NR::translate (shift_x, shift_y) * eek.inverse(); // Do the export sp_export_png_file(document, filepath, |