More stability fixes for poorly constructed files

1 files changed, 4 insertions, 2 deletions

diff --git a/gerber/render/cairo_backend.py b/gerber/render/cairo_backend.py
index 68e9e98..fbc4271 100644
--- a/gerber/render/cairo_backend.py
+++ b/gerber/render/cairo_backend.py
@@ -76,7 +76,10 @@ class GerberCairoContext(GerberContext):
         radius = self.scale[0] * arc.radius

         angle1 = arc.start_angle

         angle2 = arc.end_angle

-        width = arc.aperture.diameter if arc.aperture.diameter != 0 else 0.001

+        if isinstance(arc.aperture, Circle):

+            width = arc.aperture.diameter if arc.aperture.diameter != 0 else 0.001

+        else:

+            width = max(arc.aperture.width, arc.aperture.height, 0.001)

         self.ctx.set_source_rgba(color[0], color[1], color[2],  self.alpha)

         self.ctx.set_operator(cairo.OPERATOR_OVER if (arc.level_polarity == "dark" and not self.invert)else cairo.OPERATOR_CLEAR)        

         self.ctx.set_line_width(width * self.scale[0])

@@ -163,7 +166,6 @@ class GerberCairoContext(GerberContext):
             self.ctx.line_to(*map(mul, v, self.scale))

 

         self.ctx.fill()

-        

 

     def _render_drill(self, circle, color):

         self._render_circle(circle, color)