From 7ca5c0b34f9b9b3fa4e0871df7981342252fe577 Mon Sep 17 00:00:00 2001
From: mguthaus <mrg@ucsc.edu>
Date: Tue, 23 May 2017 16:18:11 -0700
Subject: [PATCH] Added zoom to technology file so labels in each tech are
 readable size. Made default size.

---
 compiler/geometry.py                | 11 ++++++++---
 compiler/hierarchy_layout.py        |  2 +-
 technology/freepdk45/tech/tech.py   |  3 +++
 technology/scn3me_subm/tech/tech.py |  3 +++
 4 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/compiler/geometry.py b/compiler/geometry.py
index cf3b40d9..079ac64e 100644
--- a/compiler/geometry.py
+++ b/compiler/geometry.py
@@ -1,9 +1,9 @@
 """
 This provides a set of useful generic types for the gdsMill interface. 
 """
-import tech
 import debug
 from vector import vector
+from tech import GDS
 
 class geometry:
     """
@@ -97,14 +97,19 @@ class path(geometry):
 class label(geometry):
     """Represents a text label"""
 
-    def __init__(self, text, layerNumber, offset, zoom=1):
+    def __init__(self, text, layerNumber, offset, zoom=-1):
         """Initializes a text label for specified layer"""
         geometry.__init__(self)
         self.name = "label"
         self.text = text
         self.layerNumber = layerNumber
         self.offset = vector(offset).snap_to_grid()
-        self.zoom = zoom
+        if zoom<0:
+            self.zoom = GDS["zoom"]
+        else:
+            self.zoom = zoom
+
+
         self.size = 0
 
         debug.info(3,"creating label " + self.text + " " + str(self.layerNumber) + " " + str(self.offset))
diff --git a/compiler/hierarchy_layout.py b/compiler/hierarchy_layout.py
index 0251a124..58524882 100644
--- a/compiler/hierarchy_layout.py
+++ b/compiler/hierarchy_layout.py
@@ -126,7 +126,7 @@ class layout:
                        offset=offset)
 
 
-    def add_label(self, text, layer, offset=[0,0],zoom=0.05):
+    def add_label(self, text, layer, offset=[0,0],zoom=-1):
         """Adds a text label on the given layer,offset, and zoom level"""
         # negative layers indicate "unused" layers in a given technology
         layerNumber = techlayer[layer]
diff --git a/technology/freepdk45/tech/tech.py b/technology/freepdk45/tech/tech.py
index 92ae30ef..e19c8fa7 100644
--- a/technology/freepdk45/tech/tech.py
+++ b/technology/freepdk45/tech/tech.py
@@ -12,7 +12,10 @@ info["has_nwell"] = True
 
 #GDS file info
 GDS = {}
+# gds units
 GDS["unit"] = (0.0005,1e-9)
+# default label zoom
+GDS["zoom"] = 0.05
 
 #####################################################################################################
 ##GDS Layer Map######################################################################################
diff --git a/technology/scn3me_subm/tech/tech.py b/technology/scn3me_subm/tech/tech.py
index f719df64..e473c882 100755
--- a/technology/scn3me_subm/tech/tech.py
+++ b/technology/scn3me_subm/tech/tech.py
@@ -11,7 +11,10 @@ info["has_nwell"] = True
 
 #GDS file info
 GDS={}
+# gds units
 GDS["unit"]=(0.001,1e-6)  
+# default label zoom
+GDS["zoom"] = 0.5
 
 #####################################################################################################
 ##GDS Layer Map######################################################################################