gdstk backend: close API gaps so the tutorials run

src/glayout/pdk/gf180_mapped/gf180_mapped.py

@@ -10,7 +10,6 @@
 # Actual Pin definations for GlobalFoundries 180nmMCU from the PDK manual
 # Ref: https://gf180mcu-pdk.readthedocs.io/en/latest/
 
-#LAYER["fusetop"]=(75, 0)
 LAYER = {
     "metal5": (81, 0),
     "via4": (41, 0),
@@ -29,7 +28,19 @@
     "nwell": (21, 0),
     "lvpwell": (204, 0),
     "dnwell": (12, 0),
+    # MIM capacitor, option A. The top plate is FuseTop; CAP_MK is only a
+    # marker that has to enclose it (rule MIM.7). Drawing the marker as if it
+    # were the plate leaves the cap with no dielectric at all, so the via2
+    # array that contacts the top plate lands on the bottom plate instead and
+    # shorts the two together.
+    "fusetop": (75, 0),
     "CAP_MK": (117, 5),
+    # Segundo marcador del MIM. MIM.7 solo pide CAP_MK, asi que con ese solo
+    # el DRC pasa -- pero la extraccion de LVS hace
+    #     fusetop.interacting(cap_mk).interacting(mim_l_mk)
+    # y sin este el conjunto sale vacio: el condensador es legal y a la vez
+    # invisible para el LVS.
+    "MIM_L_MK": (117, 10),
     # BJT layers
     "drc_bjt": (127, 5),
     "lvs_bjt": (118, 5),
@@ -62,7 +73,9 @@
     "nwell": "nwell",
     "pwell": "lvpwell",
     "dnwell": "dnwell",
-    "capmet": "CAP_MK",
+    "capmet": "fusetop",
+    "capmet_mk": "CAP_MK",
+    "capmet_mk2": "MIM_L_MK",
     # bjt layer
     "drc_bjt": "drc_bjt",
     "lvs_bjt": "lvs_bjt",

src/glayout/pdk/mappedpdk.py

@@ -258,6 +258,9 @@ class MappedPDK(Pdk):
         "via4",
         "met5",
         "capmet",
+        # optional marker some processes require around the cap plate
+        "capmet_mk",
+        "capmet_mk2",
         "lvs_bjt",
         "drc_bjt",
         # _pin layers

src/glayout/primitives/mimcap.py

@@ -73,6 +73,13 @@ def mimcap(
     )
     bottom_met_enclosure = pdk.get_grule(capmetbottom,"capmet")["min_enclosure"]
     mim_cap.add_padding(layers=(pdk.get_glayer(capmetbottom),),default=bottom_met_enclosure)
+    # Some processes require a marker enclosing the cap plate -- gf180 rule
+    # MIM.7 asks for CAP_MK around FuseTop. PDKs without such a marker just
+    # do not map the glayer.
+    for mk in ("capmet_mk", "capmet_mk2"):
+        if mk in pdk.glayers:
+            marker_enclosure = pdk.get_grule("capmet").get("mk_enclosure", bottom_met_enclosure)
+            mim_cap.add_padding(layers=(pdk.get_glayer(mk),), default=marker_enclosure)
     # flatten and create ports
     mim_cap = add_ports_perimeter(mim_cap, layer=pdk.get_glayer(capmetbottom), prefix="bottom_met_")
     mim_cap.add_ports(top_met_ref.get_ports_list())

tutorial/BJT_tutorials/test_bjt_gdsfactory.ipynb

@@ -47,9 +47,10 @@
    "source": [
     "from glayout import MappedPDK, sky130 , gf180\n",
     "#from gdsfactory.cell import cell\n",
-    "from gdsfactory import Component\n",
-    "from gdsfactory.geometry import boolean\n",
-    "from gdsfactory.components import text_freetype, rectangle, array, rectangular_ring"
+    "from glayout.backend import Component\n",
+    "from glayout.backend import boolean\n",
+    "from glayout.backend import rectangle, rectangular_ring\n",
+    "from gdsfactory.components import text_freetype, array"
    ]
   },
   {

tutorial/GLayout_Cmirror.ipynb

@@ -37,7 +37,7 @@
     "from glayout.util.comp_utils import move, movex, movey, align_comp_to_port, evaluate_bbox, prec_center\n",
     "from glayout.routing.straight_route import straight_route\n",
     "from glayout.routing.c_route import c_route\n",
-    "from gdsfactory import Component\n",
+    "from glayout.backend import Component\n",
     "import gdstk\n",
     "import svgutils.transform as sg\n",
     "import IPython.display\n",
@@ -103,7 +103,7 @@
     "from glayout.util.comp_utils import evaluate_bbox, prec_center\n",
     "from glayout.routing.straight_route import straight_route\n",
     "from glayout.routing.c_route import c_route\n",
-    "from gdsfactory import Component\n"
+    "from glayout.backend import Component\n"
    ]
   },
   {

tutorial/GLayout_Introduction.ipynb

@@ -193,8 +193,8 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "from gdsfactory import Component\n",
-    "from gdsfactory.components import rectangle\n",
+    "from glayout.backend import Component\n",
+    "from glayout.backend import rectangle\n",
     "\n",
     "def makeMet1Rectangle(pdk, length):\n",
     "  met1 = pdk.get_glayer(\"met1\")\n",

tutorial/GLayout_Via.ipynb

@@ -104,8 +104,8 @@
    "outputs": [],
    "source": [
     "from glayout import sky130, gf180\n",
-    "from gdsfactory import Component\n",
-    "from gdsfactory.components import rectangle"
+    "from glayout.backend import Component\n",
+    "from glayout.backend import rectangle"
    ]
   },
   {

tutorial/glayout_tutorial_5T_OTA_part1.ipynb

@@ -136,8 +136,9 @@
    "outputs": [],
    "source": [
     "from glayout import MappedPDK, sky130, gf180\n",
-    "from gdsfactory import Component\n",
-    "from gdsfactory.components import text_freetype, rectangle\n",
+    "from glayout.backend import Component\n",
+    "from glayout.backend import rectangle\n",
+    "from gdsfactory.components import text_freetype\n",
     "\n",
     "from glayout import nmos, pmos\n",
     "from glayout import via_stack\n",

tutorial/glayout_tutorial_5T_OTA_part2.ipynb

@@ -95,8 +95,9 @@
    "source": [
     "from glayout import MappedPDK, sky130 , gf180\n",
     "#from gdsfactory.cell import cell\n",
-    "from gdsfactory import Component\n",
-    "from gdsfactory.components import text_freetype, rectangle"
+    "from glayout.backend import Component\n",
+    "from glayout.backend import rectangle\n",
+    "from gdsfactory.components import text_freetype"
    ]
   },
   {
@@ -236,8 +237,9 @@
     "fivet_ota_code_string = \"\"\"\n",
     "from glayout import MappedPDK, sky130 , gf180\n",
     "# from gdsfactory.cell import cell\n",
-    "from gdsfactory import Component\n",
-    "from gdsfactory.components import text_freetype, rectangle\n",
+    "from glayout.backend import Component\n",
+    "from glayout.backend import rectangle\n",
+    "from gdsfactory.components import text_freetype\n",
     "\n",
     "from glayout import nmos, pmos\n",
     "from glayout import via_stack\n",

tutorial/glayout_tutorial_FVF_part1.ipynb

@@ -171,8 +171,9 @@
    "source": [
     "from glayout import MappedPDK, sky130 , gf180\n",
     "#from gdsfactory.cell import cell\n",
-    "from gdsfactory import Component\n",
-    "from gdsfactory.components import text_freetype, rectangle"
+    "from glayout.backend import Component\n",
+    "from glayout.backend import rectangle\n",
+    "from gdsfactory.components import text_freetype"
    ]
   },
   {
@@ -863,8 +864,9 @@
     "fvf_code_string = \"\"\"\n",
     "from glayout import MappedPDK, sky130 , gf180\n",
     "# from gdsfactory.cell import cell\n",
-    "from gdsfactory import Component\n",
-    "from gdsfactory.components import text_freetype, rectangle\n",
+    "from glayout.backend import Component\n",
+    "from glayout.backend import rectangle\n",
+    "from gdsfactory.components import text_freetype\n",
     "\n",
     "from glayout import nmos, pmos\n",
     "from glayout import via_stack\n",

tutorial/glayout_tutorial_FVF_part2.ipynb

@@ -113,8 +113,9 @@
    "source": [
     "from glayout import MappedPDK, sky130 , gf180\n",
     "#from gdsfactory.cell import cell\n",
-    "from gdsfactory import Component\n",
-    "from gdsfactory.components import text_freetype, rectangle"
+    "from glayout.backend import Component\n",
+    "from glayout.backend import rectangle\n",
+    "from gdsfactory.components import text_freetype"
    ]
   },
   {

tutorial/glayout_tutorial_INV_part1.ipynb

@@ -164,8 +164,9 @@
    "source": [
     "from glayout import MappedPDK, sky130 , gf180\n",
     "#from gdsfactory.cell import cell\n",
-    "from gdsfactory import Component\n",
-    "from gdsfactory.components import text_freetype, rectangle"
+    "from glayout.backend import Component\n",
+    "from glayout.backend import rectangle\n",
+    "from gdsfactory.components import text_freetype"
    ]
   },
   {
@@ -803,9 +804,10 @@
    "source": [
     "inv_code_string = \"\"\"\n",
     "from glayout import MappedPDK, sky130 , gf180\n",
-    "from gdsfactory.cell import cell\n",
-    "from gdsfactory import Component\n",
-    "from gdsfactory.components import text_freetype, rectangle\n",
+    "from glayout.backend import cell\n",
+    "from glayout.backend import Component\n",
+    "from glayout.backend import rectangle\n",
+    "from gdsfactory.components import text_freetype\n",
     "\n",
     "from glayout import nmos, pmos\n",
     "from glayout import via_stack\n",

tutorial/glayout_tutorial_INV_part2.ipynb

@@ -105,8 +105,9 @@
    "outputs": [],
    "source": [
     "from glayout import MappedPDK, sky130 , gf180\n",
-    "from gdsfactory import Component\n",
-    "from gdsfactory.components import text_freetype, rectangle\n",
+    "from glayout.backend import Component\n",
+    "from glayout.backend import rectangle\n",
+    "from gdsfactory.components import text_freetype\n",
     "\n",
     "import gdsfactory as gf\n",
     "gf.clear_cache()"