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-rw-r--r--gerber/render/svgwrite_backend.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/gerber/render/svgwrite_backend.py b/gerber/render/svgwrite_backend.py
index a88abfe..f8136e0 100644
--- a/gerber/render/svgwrite_backend.py
+++ b/gerber/render/svgwrite_backend.py
@@ -109,7 +109,7 @@ class GerberSvgContext(GerberContext):
self.dwg.add(acircle)
def _render_rectangle(self, rectangle, color):
- center = map(mul, rectangle.position, self.scale)
+ center = tuple(map(mul, rectangle.position, self.scale))
size = tuple(map(mul, (rectangle.width, rectangle.height), map(abs, self.scale)))
insert = center[0] - size[0] / 2., center[1] - size[1] / 2.
arect = self.dwg.rect(insert=insert, size=size,