diff options
Diffstat (limited to 'src/sp-guide.cpp')
| -rw-r--r-- | src/sp-guide.cpp | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/src/sp-guide.cpp b/src/sp-guide.cpp index 890c1f597..08b055508 100644 --- a/src/sp-guide.cpp +++ b/src/sp-guide.cpp @@ -156,8 +156,15 @@ void SPGuide::set(unsigned int key, const gchar *value) { // If root viewBox set, interpret guides in terms of viewBox (90/96) SPRoot *root = document->getRoot(); if( root->viewBox_set ) { - newx = newx * root->width.computed / root->viewBox.width(); - newy = newy * root->height.computed / root->viewBox.height(); + if(Geom::are_near((root->width.computed * root->viewBox.height()) / (root->viewBox.width() * root->height.computed), 1.0, Geom::EPSILON)) { + // for uniform scaling, try to reduce numerical error + double vbunit2px = (root->width.computed / root->viewBox.width() + root->height.computed / root->viewBox.height())/2.0; + newx = newx * vbunit2px; + newy = newy * vbunit2px; + } else { + newx = newx * root->width.computed / root->viewBox.width(); + newy = newy * root->height.computed / root->viewBox.height(); + } } this->point_on_line = Geom::Point(newx, newy); } else if (success == 1) { |