feat: add buf, not, mux and decode gates

components.typ

@@ -178,6 +178,21 @@
 
 /// Logic gates
 
+// BUF gate
+// type: node, fillable
+#let buf-gate = {
+  parts.buf-gate-body
+  parts.logic-gate-legs-single
+}
+
+// NOT gate
+// type: node, fillable
+#let not-gate = {
+  parts.buf-gate-body
+  parts.not-circle
+  parts.logic-gate-legs-single
+}
+
 /// AND gate
 /// type: node, fillable
 #let and-gate = {
@@ -227,6 +242,20 @@
   parts.xor-bar
 }
 
+/// MUX gate
+/// type: node, fillable
+#let mux-gate = {
+  parts.mux-gate-body
+  parts.logic-gate-legs-mux
+}
+
+/// DEC gate
+/// type: node, fillable
+#let dec-gate = {
+  parts.dec-gate-body
+  parts.logic-gate-legs-dec
+}
+
 #let path = (
   // Resistive bipoles
   "short": short,
@@ -250,10 +279,14 @@
   "op amp": op-amp,
 
   // Logic gates
+  "buf gate": buf-gate,
+  "not gate": not-gate,
   "and gate": and-gate,
   "nand gate": nand-gate,
   "or gate": or-gate,
   "nor gate": nor-gate,
   "xor gate": xor-gate,
-  "xnor gate": xnor-gate
+  "xnor gate": xnor-gate,
+  "mux gate": mux-gate,
+  "dec gate": dec-gate
 )

parts.typ

@@ -1,5 +1,77 @@
 #import "../typst-canvas/draw.typ": *
 #import "utils.typ": anchors
+
+#let mux-gate-body = {
+  line(
+    (-0.5, 0.8),
+    (-0.5, -0.8),
+    (0.5, -0.6),
+    (0.5, 0.6),
+    (-0.5, 0.8)
+  )
+  anchors((
+    "bin 1": (-0.5, 0.25),
+    "in 1": (rel: (-0.5, 0)),
+    "bin 2": (-0.5, -0.25),
+    "in 2": (rel: (-0.5, 0)),
+    "bsel": (0, 0.7),
+    "sel": (rel: (0, 0.3)),
+    "bout": (0.5, 0),
+    "out": (rel: (0.5, 0)),
+    "north": (0, 1),
+    "south": (rel: (0, -1)),
+    "east": "out",
+    "west": ("in 1", "|-", "center"),
+    "left": ("bin 1", "|-", "center"),
+    "right": "bout"
+  ))
+}
+
+#let dec-gate-body = {
+  line(
+    (-0.5, 0.6),
+    (-0.5, -0.6),
+    (0.5, -0.8),
+    (0.5, 0.8),
+    (-0.5, 0.6)
+  )
+  anchors((
+    "bin": (-0.5, 0),
+    "in": (rel: (-0.5, 0)),
+    "bout 1": (0.5, 0.25),
+    "out 1": (rel: (0.5, 0)),
+    "bout 2": (0.5, -0.25),
+    "out 2": (rel: (0.5, 0)),
+    "north": (0, 0.5),
+    "south": (rel: (0, -1)),
+    "east": (0.5, 0),
+    "west": ("in", "|-", "center"),
+    "left": ("bin", "|-", "center"),
+    "right": (0.5, 0)
+  ))
+}
+
+#let buf-gate-body = {
+  line(
+    (-0.5, 0.5),
+    (-0.5, -0.5),
+    (0.5, 0),
+    (-0.5, 0.5)
+  )
+  anchors((
+    "bin": (-0.5, 0),
+    "in": (rel: (-0.5, 0)),
+    "bout": (0.5, 0),
+    "out": (rel: (0.5, 0)),
+    "north": (0, 0.5),
+    "south": (rel: (0, -1)),
+    "east": "out",
+    "west": ("in", "|-", "center"),
+    "left": ("bin", "|-", "center"),
+    "right": "bout"
+  ))
+}
+
 #let and-gate-body = {
   merge-path(close: true, {
     arc((0,0), -90deg, 90deg, radius: 0.5, name: "curve", anchor: "origin")
@@ -75,4 +147,16 @@
 
 #let logic-gate-legs = for a in ("in 1", "in 2", "out") {
   line("b" + a, a)
-}
+}
+
+#let logic-gate-legs-single = for a in ("in", "out") {
+  line("b" + a, a)
+}
+
+#let logic-gate-legs-mux = for a in ("in 1",  "in 2", "out", "sel") {
+  line("b" + a, a)
+}
+
+#let logic-gate-legs-dec = for a in ("in", "out 1", "out 2") {
+  line("b" + a, a)
+}