From f993e4c31bc3b9bef680801a9cd8174783a7b99c Mon Sep 17 00:00:00 2001
From: Matthias Koefferlein <matthias@koefferlein.de>
Date: Thu, 7 Jan 2021 00:01:47 +0100
Subject: [PATCH] WIP: clarification on shielding: in two-layer checks, the
 second layer shields, but not the first one.

---
 testdata/drc/drcSimpleTests_19.drc   |  11 ++++++++++-
 testdata/drc/drcSimpleTests_au19.gds | Bin 2762 -> 4554 bytes
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/testdata/drc/drcSimpleTests_19.drc b/testdata/drc/drcSimpleTests_19.drc
index e92ef5d58..f2b05ba56 100644
--- a/testdata/drc/drcSimpleTests_19.drc
+++ b/testdata/drc/drcSimpleTests_19.drc
@@ -9,18 +9,27 @@ l2 = input(2, 0)
 
 l1.output(1, 0)
 l2.output(2, 0)
+
 l1.space(3.0, transparent, projection).output(100, 0)
 l1.space(3.0, shielded, projection).output(101, 0)
+# NOTE: for two-layer checks, the *second* layer
+# shields, but not the first one
 l2.separation(l1, 3.0, transparent, projection).output(110, 0)
 l2.separation(l1, 3.0, shielded, projection).output(111, 0)
+l1.separation(l2, 3.0, transparent, projection).output(120, 0)
+l1.separation(l2, 3.0, shielded, projection).output(121, 0)
 
-deep 
+#deep 
 
 l1 = input(1, 0)
 l2 = input(2, 0)
 
 l1.space(3.0, transparent, projection).output(200, 0)
 l1.space(3.0, shielded, projection).output(201, 0)
+# NOTE: for two-layer checks, the *second* layer
+# shields, but not the first one
 l2.separation(l1, 3.0, transparent, projection).output(210, 0)
 l2.separation(l1, 3.0, shielded, projection).output(211, 0)
+l1.separation(l2, 3.0, transparent, projection).output(220, 0)
+l1.separation(l2, 3.0, shielded, projection).output(221, 0)
 
diff --git a/testdata/drc/drcSimpleTests_au19.gds b/testdata/drc/drcSimpleTests_au19.gds
index 17f23c5243563bd942571e4589aca2605e329640..8816a92ffc54cb11162771b352aec4d5bf35e91f 100644
GIT binary patch
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delta 238
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