From 29a20da87fae96cf89e082f8b0d4e194b662b55e Mon Sep 17 00:00:00 2001
From: jaseg <git@jaseg.net>
Date: Fri, 10 Jan 2020 07:38:16 +0100
Subject: Add handling for layers without apertures

Fixes #4
---
 gerbolyze.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gerbolyze.py b/gerbolyze.py
index fad7a33..47a9e33 100755
--- a/gerbolyze.py
+++ b/gerbolyze.py
@@ -224,6 +224,7 @@ def plot_contours(
         scale:float,
         debug=lambda *args:None,
         status_print=lambda *args:None):
+    from gerber.primitives import Line, Region, Circle
     imgh, imgw = img.shape
 
     # Extract contour hierarchy using OpenCV
@@ -231,9 +232,8 @@ def plot_contours(
     # See https://stackoverflow.com/questions/48291581/how-to-use-cv2-findcontours-in-different-opencv-versions/48292371
     contours, hierarchy = cv2.findContours(img, cv2.RETR_TREE, cv2.CHAIN_APPROX_TC89_KCOS)[-2:]
 
-    aperture = list(layer.apertures)[0]
+    aperture = list(layer.apertures)[0] if layer.apertures else Circle(None, 0.10)
 
-    from gerber.primitives import Line, Region
     status_print('offx', offx, 'scale', scale)
 
     xbias, ybias = offx
-- 
cgit