From 070093a95d1f92b43b8bdbbff68d1515205349f3 Mon Sep 17 00:00:00 2001 From: dvlierop2 Date: Mon, 9 Apr 2007 12:50:25 +0000 Subject: [PATCH] Eliminate drift of origin if mirroring occurs during scaling/stretching --- src/seltrans.cpp | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) diff --git a/src/seltrans.cpp b/src/seltrans.cpp index 52afc0e14..21b8a0461 100644 --- a/src/seltrans.cpp +++ b/src/seltrans.cpp @@ -1355,8 +1355,13 @@ void Inkscape::SelTrans::stretch(SPSelTransHandle const &handle, NR::Point &pt, return; } - NR::Point new_bbox_min = _approximate_bbox->min() * (NR::translate(-scale_origin) * NR::Matrix(s) * NR::translate(scale_origin)); - NR::Point new_bbox_max = _approximate_bbox->max() * (NR::translate(-scale_origin) * NR::Matrix(s) * NR::translate(scale_origin)); + //Get two corners of the new bbox + NR::Point p1 = _approximate_bbox->min() * (NR::translate(-scale_origin) * NR::Matrix(s) * NR::translate(scale_origin)); + NR::Point p2 = _approximate_bbox->max() * (NR::translate(-scale_origin) * NR::Matrix(s) * NR::translate(scale_origin)); + + //Find the ones at the lower-left and upper-right, as required by get_scale_transform_with_stroke + NR::Point new_bbox_min = NR::Point(std::min(p1[NR::X], p2[NR::X]), std::min(p1[NR::Y], p2[NR::Y])); + NR::Point new_bbox_max = NR::Point(std::max(p1[NR::X], p2[NR::X]), std::max(p1[NR::Y], p2[NR::Y])); int transform_stroke = false; gdouble strokewidth = 0; @@ -1387,9 +1392,15 @@ void Inkscape::SelTrans::scale(NR::Point &pt, guint state) if (fabs(s[i]) < 1e-9) s[i] = 1e-9; } - NR::Point new_bbox_min = _approximate_bbox->min() * (NR::translate(-_origin) * NR::Matrix(s) * NR::translate(_origin)); - NR::Point new_bbox_max = _approximate_bbox->max() * (NR::translate(-_origin) * NR::Matrix(s) * NR::translate(_origin)); + + //Get two corners of the new bbox + NR::Point p1 = _approximate_bbox->min() * (NR::translate(-_origin) * NR::Matrix(s) * NR::translate(_origin)); + NR::Point p2 = _approximate_bbox->max() * (NR::translate(-_origin) * NR::Matrix(s) * NR::translate(_origin)); + //Find the ones at the lower-left and upper-right, as required by get_scale_transform_with_stroke + NR::Point new_bbox_min = NR::Point(std::min(p1[NR::X], p2[NR::X]), std::min(p1[NR::Y], p2[NR::Y])); + NR::Point new_bbox_max = NR::Point(std::max(p1[NR::X], p2[NR::X]), std::max(p1[NR::Y], p2[NR::Y])); + int transform_stroke = false; gdouble strokewidth = 0; -- 2.30.2