From e8331f066dee9fc83fe3faa774419f4e56e71ef3 Mon Sep 17 00:00:00 2001
From: Alessandro Ranellucci <aar@cpan.org>
Date: Wed, 23 Nov 2016 18:58:40 +0100
Subject: [PATCH] Include layer-height as sttribute in SLA SVG output

---
 xs/src/libslic3r/SLAPrint.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/xs/src/libslic3r/SLAPrint.cpp b/xs/src/libslic3r/SLAPrint.cpp
index a50859fbd7..985e0e2cb5 100644
--- a/xs/src/libslic3r/SLAPrint.cpp
+++ b/xs/src/libslic3r/SLAPrint.cpp
@@ -147,8 +147,12 @@ SLAPrint::write_svg(const std::string &outputfile) const
     
     for (size_t i = 0; i < this->layers.size(); ++i) {
         const Layer &layer = this->layers[i];
-        fprintf(f, "\t<g id=\"layer%zu\" slic3r:z=\"%0.4f\" slic3r:slice-z=\"%0.4f\">\n", i,
-            layer.print_z, layer.slice_z);
+        fprintf(f,
+            "\t<g id=\"layer%zu\" slic3r:z=\"%0.4f\" slic3r:slice-z=\"%0.4f\" slic3r:layer-height=\"%0.4f\">\n", i,
+            layer.print_z,
+            layer.slice_z,
+            layer.print_z - (i == 0 ? 0 : this->layers[i-1].print_z)
+        );
         
         const ExPolygons &slices = layer.slices.expolygons;
         for (ExPolygons::const_iterator it = slices.begin(); it != slices.end(); ++it) {