From 82ab50d13fed255eaec96d794f97e7b422af9cd0 Mon Sep 17 00:00:00 2001 From: Alvin Penner Date: Tue, 31 Dec 2013 08:17:23 -0500 Subject: prevent singularity when scaling horizontal or vertical line (bzr r12864) --- src/sp-item-transform.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src/sp-item-transform.cpp') diff --git a/src/sp-item-transform.cpp b/src/sp-item-transform.cpp index 88148c789..2d1dd8193 100644 --- a/src/sp-item-transform.cpp +++ b/src/sp-item-transform.cpp @@ -140,11 +140,11 @@ Geom::Affine get_scale_transform_for_uniform_stroke(Geom::Rect const &bbox_visua gdouble scale_y = 1; gdouble r1 = r0; - if (fabs(w0 - r0) < 1e-6) { // We have a vertical line at hand + if ((fabs(w0 - r0) < 1e-6) || w1 == 0) { // We have a vertical line at hand r1 = transform_stroke ? r0 * sqrt(h1/h0) : r0; scale_x = 1; scale_y = preserve ? h1/h0 : (h1 - r1)/(h0 - r0); - } else if (fabs(h0 - r0) < 1e-6) { // We have a horizontal line at hand + } else if ((fabs(h0 - r0) < 1e-6) || h1 == 0) { // We have a horizontal line at hand r1 = transform_stroke ? r0 * sqrt(w1/w0) : r0; scale_x = preserve ? w1/w0 : (w1 - r1)/(w0 - r0); scale_y = 1; -- cgit v1.2.3