forked from HEL/circuiteria
David Stadelmann
2e6bfab744
Introduces a new "s-shape" wire style connecting two ports on opposite cardinal sides (east<->west or north<->south) via 5 segments joined at 4 corners (u1-start, u1-end, u2-start, u2-end). The axis is auto-detected from port anchors; when both endpoints share the same perpendicular coordinate (single-block loopback) `s-ratio-mid` is reinterpreted as an absolute signed offset so the crossbar can still be placed above or below the endpoints. Also adds `u-at` to the "u-shape" style, an anchor-based crossbar placement analogous to `zigzag-at`. `u-depth` now defaults to `auto` to allow clean mutual-exclusion with `u-at`. Factors the shared placement normalizer into `normalize-scalar-offset(at, axis)`; `normalize-zigzag-at` remains as a thin backwards-compatible wrapper.
671 lines
20 KiB
Typst
671 lines
20 KiB
Typst
#import "example.typ": example
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#let alu = example(```
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element.alu(x: 0, y: 0, w: 1, h: 2, id: "alu")
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wire.stub("alu-port-in1", "west")
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wire.stub("alu-port-in2", "west")
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wire.stub("alu-port-out", "east")
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```)
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#let block = example(```
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element.block(
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x: 0, y: 0, w: 2, h: 2, id: "block",
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ports: (
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north: ((id: "clk", clock: true),),
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west: ((id: "in1", name: "A"),
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(id: "in2", name: "B")),
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east: ((id: "out", name: "C"),)
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)
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)
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wire.stub("block-port-clk", "north")
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wire.stub("block-port-in1", "west")
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wire.stub("block-port-in2", "west")
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wire.stub("block-port-out", "east")
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```)
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#let align-with-ports = example(
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```
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// `align-with` reuses another port's coord
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// (E/W: y, N/S: x). Forms:
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// 1. "id" — local
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// 2. (element:"e", port:"p") — cross-elmt
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// 3. "raw-anchor" — CeTZ anchor
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element.block(x: 0, y: 0, w: 2, h: 2, id: "b1",
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ports: (
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west: ((id: "a", name: "A", y: 30%),),
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east: ((id: "oa", name: "A'",
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"align-with": "a"),),
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))
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element.block(x: 4, y: -.3, w: 2, h: 2.6, id: "b2",
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ports: (
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west: ((id: "ia", name: "A",
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"align-with":
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(element: "b1", port: "oa")),),
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east: ((id: "o", name: "C"),),
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))
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wire.stub("b1-port-a", "west")
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wire.wire("w", ("b1-port-oa", "b2-port-ia"),
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style: "direct")
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wire.stub("b2-port-o", "east")
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```,
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vertical: true,
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)
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#let extender = example(```
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element.extender(
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x: 0, y: 0, w: 3, h: 1,
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id: "extender"
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)
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wire.stub("extender-port-in", "west")
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wire.stub("extender-port-out", "east")
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```)
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#let multiplexer = example(```
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element.multiplexer(
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x: 0, y: 0, w: 1, h: 3,
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id: "multiplexer",
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entries: 3
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)
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wire.stub("multiplexer.north", "north")
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wire.stub("multiplexer-port-out", "east")
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element.multiplexer(
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x: 0, y: -4, w: 1, h: 3,
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id: "multiplexer2",
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entries: ("A", "B", "C")
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)
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wire.stub("multiplexer2.south", "south")
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wire.stub("multiplexer2-port-out", "east")
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for i in range(3) {
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wire.stub("multiplexer-port-in" + str(i), "west")
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wire.stub("multiplexer2-port-in" + str(i), "west")
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}
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```)
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#let wires = example(
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```
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for i in range(5) {
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draw.circle((i * 3, 0), radius: .1, name: "p" + str(i * 2))
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draw.circle((i * 3 + 2, 1), radius: .1, name: "p" + str(i * 2 + 1))
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draw.content((i * 3 + 1, -1), raw(wire.wire-styles.at(i)))
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}
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wire.wire("w1", ("p0", "p1"), style: "direct")
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wire.wire("w2", ("p2", "p3"), style: "zigzag", zigzag-dir: "vertical")
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wire.wire("w3", ("p4", "p5"), style: "dodge",
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dodge-y: -0.5, dodge-margins: (0.5, 0.5))
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wire.wire("w4", ("p6","p7"), style: "guided",
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guided-center:(20%, 40%), guided-margins: (90%,87%),
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guided-sides: ("north","south"))
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wire.wire("w5", ("p8", "p9"), style: "u-shape",
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u-side: "east", u-depth: 0.5)
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```,
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vertical: true,
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)
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#let stub = example(```
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draw.circle((0, 0), radius: .1, name: "p")
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wire.stub("p", "north", name: "north", length: 1)
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wire.stub("p", "east", name: "east", vertical: true)
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wire.stub("p", "south", name: "south", length: 15pt)
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wire.stub("p", "west", name: "west", length: 3em)
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```)
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#let breakout = example(```
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// 16 breakouts: 4 directions × 4 label positions, laid out
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// two per row so the labels have room to breathe.
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let dirs = ("north-east", "north-west", "south-east", "south-west")
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let poss = ("north-east", "north-west", "south-east", "south-west")
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let short = (
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"north-east": "NE", "north-west": "NW",
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"south-east": "SE", "south-west": "SW",
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)
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let cols = 2
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let dx = 5
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let dy = 2
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for (i, dir) in dirs.enumerate() {
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for (j, pos) in poss.enumerate() {
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let n = i * poss.len() + j
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let r = calc.floor(n / cols)
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let c = calc.rem(n, cols)
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draw.circle((c * dx, -r * dy), radius: .05)
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wire.breakout("b" + str(n),
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x: c * dx, y: -r * dy,
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direction: dir,
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port-side: if dir.ends-with("east") { "west" } else { "east" },
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name: short.at(dir) + "/" + short.at(pos),
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name-pos: pos)
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}
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}
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```)
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#let breakout-label = example(
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```
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// name-pos matches direction → label sits at the end point.
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wire.breakout("b1", x: 0, y: 0, direction: "north-east",
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port-side: "east",
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name: "at end", name-pos: "north-east")
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// name-pos opposite to direction → label would cover the line, so
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// it falls back to the start point.
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wire.breakout("b2", x: 4, y: 0, direction: "north-east",
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port-side: "east",
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name: "at start", name-pos: "south-west")
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```,
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vertical: true,
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)
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#let breakout-wire = example(```
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// Bus fan-out: a horizontal wire from the left block to the lower
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// right block carries the full 10-bit bus. A breakout in the middle
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// of that wire taps bits [9:5] and routes them to the upper right
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// block via an L-shaped zigzag (up, then right).
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element.block(x: 0, y: 0, w: 2, h: 2, id: "src",
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fill: util.colors.blue,
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ports: (east: ((id: "out"),)))
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element.block(x: 6, y: 0, w: 2, h: 2, id: "dstL",
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fill: util.colors.green,
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ports: (west: ((id: "in"),)))
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element.block(x: 6, y: 4, w: 2, h: 2, id: "dstU",
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fill: util.colors.orange,
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ports: (west: ((id: "in"),)))
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// Full bus wire, labelled "[9:0]" on the left.
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wire.wire("wbus", ("src-port-out", "dstL-port-in"),
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name: "[9:0]", name-pos: "start")
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// Breakout tapped from the midpoint of the bus.
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wire.breakout("tap",
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x: (rel: 2, to: "src-port-out"),
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y: (from: "src-port-out"),
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direction: "north-east",
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port-side: "west",
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name: "[9:5]", name-pos: "north-east")
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// L-shaped wire from the breakout up and then right to the upper
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// block's input.
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wire.wire("wtap", ("tap-port-tap", "dstU-port-in"),
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style: "zigzag", zigzag-dir: "horizontal",
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zigzag-ratio: 100%)
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```)
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#let gate-and = example(
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```
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gates.gate-and(x: 0, y: 0, w: 1.5, h: 1.5)
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gates.gate-and(x: 3, y: 0, w: 1.5, h: 1.5, inverted: "all")
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```,
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vertical: true,
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)
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#let gate-nand = example(
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```
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gates.gate-nand(x: 0, y: 0, w: 1.5, h: 1.5)
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gates.gate-nand(x: 3, y: 0, w: 1.5, h: 1.5, inverted: "all")
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```,
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vertical: true,
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)
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#let gate-buf = example(
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```
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gates.gate-buf(x: 0, y: 0, w: 1.5, h: 1.5)
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gates.gate-buf(x: 3, y: 0, w: 1.5, h: 1.5, inverted: "all")
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```,
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vertical: true,
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)
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#let gate-not = example(
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```
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gates.gate-not(x: 0, y: 0, w: 1.5, h: 1.5)
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gates.gate-not(x: 3, y: 0, w: 1.5, h: 1.5, inverted: "all")
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```,
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vertical: true,
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)
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#let gate-or = example(
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```
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gates.gate-or(x: 0, y: 0, w: 1.5, h: 1.5)
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gates.gate-or(x: 3, y: 0, w: 1.5, h: 1.5, inverted: "all")
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```,
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vertical: true,
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)
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#let gate-nor = example(
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```
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gates.gate-nor(x: 0, y: 0, w: 1.5, h: 1.5)
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gates.gate-nor(x: 3, y: 0, w: 1.5, h: 1.5, inverted: "all")
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```,
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vertical: true,
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)
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#let gate-xor = example(
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```
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gates.gate-xor(x: 0, y: 0, w: 1.5, h: 1.5)
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gates.gate-xor(x: 3, y: 0, w: 1.5, h: 1.5, inverted: "all")
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```,
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vertical: true,
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)
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#let gate-xnor = example(
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```
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gates.gate-xnor(x: 0, y: 0, w: 1.5, h: 1.5)
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gates.gate-xnor(x: 3, y: 0, w: 1.5, h: 1.5, inverted: "all")
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```,
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vertical: true,
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)
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#let iec-gate-and = example(
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```
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gates.iec-gate-and(x: 0, y: 0, w: 1.5, h: 1.5)
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gates.iec-gate-and(x: 3, y: 0, w: 1.5, h: 1.5, inverted: "all")
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```,
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vertical: true,
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)
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#let iec-gate-nand = example(
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```
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gates.iec-gate-nand(x: 0, y: 0, w: 1.5, h: 1.5)
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gates.iec-gate-nand(x: 3, y: 0, w: 1.5, h: 1.5, inverted: "all")
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```,
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vertical: true,
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)
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#let iec-gate-or = example(
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```
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gates.iec-gate-or(x: 0, y: 0, w: 1.5, h: 1.5)
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gates.iec-gate-or(x: 3, y: 0, w: 1.5, h: 1.5, inverted: "all")
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```,
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vertical: true,
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)
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#let iec-gate-nor = example(
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```
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gates.iec-gate-nor(x: 0, y: 0, w: 1.5, h: 1.5)
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gates.iec-gate-nor(x: 3, y: 0, w: 1.5, h: 1.5, inverted: "all")
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```,
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vertical: true,
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)
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#let iec-gate-xor = example(
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```
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gates.iec-gate-xor(x: 0, y: 0, w: 1.5, h: 1.5)
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gates.iec-gate-xor(x: 3, y: 0, w: 1.5, h: 1.5, inverted: "all")
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```,
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vertical: true,
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)
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#let iec-gate-xnor = example(
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```
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gates.iec-gate-xnor(x: 0, y: 0, w: 1.5, h: 1.5)
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gates.iec-gate-xnor(x: 3, y: 0, w: 1.5, h: 1.5, inverted: "all")
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```,
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vertical: true,
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)
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#let iec-gate-buf = example(
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```
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gates.iec-gate-buf(x: 0, y: 0, w: 1.5, h: 1.5)
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gates.iec-gate-buf(x: 3, y: 0, w: 1.5, h: 1.5, inverted: "all")
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```,
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vertical: true,
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)
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#let iec-gate-not = example(
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```
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gates.iec-gate-not(x: 0, y: 0, w: 1.5, h: 1.5)
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gates.iec-gate-not(x: 3, y: 0, w: 1.5, h: 1.5, inverted: "all")
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```,
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vertical: true,
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)
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#let group = example(```
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element.group(
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id: "g1", name: "Group 1", stroke: (dash: "dashed"),
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{
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element.block(id: "b1", w: 2, h: 2,
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x: 0, y: 1.5,
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ports: (east: ((id: "out"),)),
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fill: util.colors.green
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)
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element.block(id: "b2", w: 2, h: 1,
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x: 0, y: 0,
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ports: (east: ((id: "out"),)),
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fill: util.colors.orange
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)
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}
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)
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element.block(id: "b3", w: 2, h: 3,
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x: (rel: 1, to: "g1.east"),
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y: (from: "b1-port-out", to: "in1"),
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ports: (west: ((id: "in1"), (id: "in2"))),
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fill: util.colors.blue
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)
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wire.wire("w1", ("b1-port-out", "b3-port-in1"))
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wire.wire("w2", ("b2-port-out", "b3-port-in2"),
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style: "zigzag")
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```)
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#let group-ports = example(
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```
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// outside-port-names: true (default) — labels outside the border
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element.group(
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id: "g1", name: "outside (default)",
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stroke: (dash: "dashed"),
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fill: util.colors.blue.lighten(60%),
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padding: 2em,
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outside-port-names: true,
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port-name-padding: 4pt,
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ports: (
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west: ((id: "in", name: "D"),),
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east: ((id: "out", name: "Q"),),
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),
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{ element.block(id: "b1", w: 2, h: 1.5, x: 0, y: 0,
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fill: util.colors.green,
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ports: (west: ((id: "d", name: "d"),),
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east: ((id: "q", name: "q"),))) }
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)
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wire.wire("wG1in", ("g1-port-in", "b1-port-d"), directed: true)
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wire.wire("wG1out", ("b1-port-q", "g1-port-out"), directed: true)
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// outside-port-names: false — labels inside the border (block style)
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// with extra padding via port-name-padding
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element.group(
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id: "g2", name: "inside",
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stroke: (dash: "dashed"),
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fill: util.colors.orange.lighten(60%),
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padding: 2em,
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outside-port-names: false,
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port-name-padding: 0.4em,
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ports: (
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west: ((id: "in", name: "D"),),
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east: ((id: "out", name: "Q"),),
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),
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{ element.block(id: "b2", w: 2, h: 1.5, x: 6, y: 0,
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fill: util.colors.green,
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ports: (west: ((id: "d"),), east: ((id: "q"),))) }
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)
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wire.stub("g2-port-in", "west")
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wire.stub("g2-port-out", "east")
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```,
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vertical: true,
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)
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#let port-names-outside = example(```
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element.block(
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x: 0, y: 0, w: 2, h: 2, id: "block",
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port-names-outside: true,
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port-name-padding: 4pt,
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ports: (
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north: ((id: "clk", name: "CLK", clock: true),),
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west: ((id: "in1", name: "A"),
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(id: "in2", name: "B")),
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east: ((id: "out", name: "Y"),)
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)
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)
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```)
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#let port-shape = example(```
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// Block with pentagon-shaped ports.
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// - port-shape / port-kind / port-size are element-level defaults.
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// - Any port field (shape, kind, size, stroke, fill) overrides per port.
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// - kind: "in" → tip points into the block (default)
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// kind: "out" → tip points away from the block
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// - clock ports with shape: "pentagon" drop their triangle and default
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// to a gray fill.
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element.block(
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id: "b", w: 3, h: 3, x: 0, y: 0,
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fill: util.colors.yellow.lighten(60%),
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port-shape: "pentagon",
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port-size: 1em,
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ports: (
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// west: default input
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west: ((id: "in", name: "D"),),
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// east: output — tip points away
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east: ((id: "out", name: "Q", kind: "out"),),
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// north: clock port — pentagon replaces the triangle, gray fill
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north: ((id: "clk", name: "CLK", clock: true),),
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// south: styled output with per-port fill and stroke
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south: ((id: "rdy", name: "RDY", kind: "out",
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fill: util.colors.blue, stroke: red + 1.5pt),),
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),
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)
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// Wires connect at the outer end of each pentagon.
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wire.stub("b-port-in", "west")
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wire.stub("b-port-out", "east")
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wire.stub("b-port-clk", "north")
|
||
wire.stub("b-port-rdy", "south")
|
||
```)
|
||
|
||
#let shell = example(```
|
||
// A shell block acts as a container: port name labels are drawn
|
||
// outside by default, and wires attach at the *inside* tip of
|
||
// pentagon-shaped ports so child elements can sit within.
|
||
element.block(
|
||
id: "sh", w: 5, h: 3, x: 0, y: 0,
|
||
shell: true,
|
||
port-shape: "pentagon",
|
||
fill: util.colors.blue.lighten(80%),
|
||
ports: (
|
||
west: ((id: "in", name: "IN"),),
|
||
east: ((id: "out", name: "OUT", kind: "out"),),
|
||
),
|
||
{
|
||
element.block(id: "inner", w: 2, h: 1.5, x: 1.5, y: 0.75,
|
||
fill: util.colors.yellow,
|
||
ports: (west: ((id: "a"),), east: ((id: "b"),)))
|
||
}
|
||
)
|
||
wire.wire("w-in", ("sh-port-in", "inner-port-a"))
|
||
wire.wire("w-out", ("inner-port-b", "sh-port-out"))
|
||
```)
|
||
|
||
#let intersection = example(```
|
||
wire.wire("w1", ((0, 0), (1, 1)), style: "zigzag", zigzag-dir: "vertical")
|
||
wire.wire("w2", ((0, 0), (1, -.5)),
|
||
style: "zigzag", zigzag-dir: "vertical", zigzag-ratio: 80%)
|
||
wire.intersection("w1.zig")
|
||
```)
|
||
|
||
#let u-shape-wire = example(
|
||
```
|
||
// east <-> east (u-side auto-detected)
|
||
element.block(x: 0, y: 0, w: 1.5, h: 1.5, id: "eA",
|
||
fill: util.colors.orange,
|
||
ports: (east: ((id: "out"),)))
|
||
element.block(x: 0.5, y: -2.5, w: 1.5, h: 1.5, id: "eB",
|
||
fill: util.colors.orange,
|
||
ports: (east: ((id: "out"),)))
|
||
wire.wire("uEE", ("eA-port-out", "eB-port-out"),
|
||
style: "u-shape", u-depth: 0.5)
|
||
|
||
// west <-> west (auto-detected)
|
||
element.block(x: 6, y: 0, w: 1.5, h: 1.5, id: "wA",
|
||
fill: util.colors.yellow,
|
||
ports: (west: ((id: "in"),)))
|
||
element.block(x: 6.5, y: -2.5, w: 1.5, h: 1.5, id: "wB",
|
||
fill: util.colors.yellow,
|
||
ports: (west: ((id: "in"),)))
|
||
wire.wire("uWW", ("wA-port-in", "wB-port-in"),
|
||
style: "u-shape", u-depth: 0.5)
|
||
|
||
// north <-> north (auto-detected)
|
||
element.block(x: 10, y: -3, w: 1.5, h: 1.5, id: "nA",
|
||
fill: util.colors.green,
|
||
ports: (north: ((id: "out"),)))
|
||
element.block(x: 12.5, y: -2.5, w: 1.5, h: 1.5, id: "nB",
|
||
fill: util.colors.green,
|
||
ports: (north: ((id: "out"),)))
|
||
wire.wire("uNN", ("nA-port-out", "nB-port-out"),
|
||
style: "u-shape", u-depth: 0.5)
|
||
|
||
// south <-> south with explicit u-side override
|
||
element.block(x: 16, y: -3, w: 1.5, h: 1.5, id: "sA",
|
||
fill: util.colors.pink,
|
||
ports: (south: ((id: "out"),)))
|
||
element.block(x: 18.5, y: -3.5, w: 1.5, h: 1.5, id: "sB",
|
||
fill: util.colors.pink,
|
||
ports: (south: ((id: "out"),)))
|
||
wire.wire("uSS", ("sA-port-out", "sB-port-out"),
|
||
style: "u-shape", u-side: "south", u-depth: 0.5)
|
||
```,
|
||
vertical: true,
|
||
)
|
||
|
||
#let zigzag-at = example(
|
||
```
|
||
// `zigzag-at` places the middle bend of a zigzag wire
|
||
// on the axis of a referenced anchor, overriding
|
||
// `zigzag-ratio`.
|
||
element.block(x: 0, y: 0, w: 1.5, h: 1.5, id: "src",
|
||
ports: (east: ((id: "o", name: "O"),),))
|
||
element.block(x: 3, y: -1.2, w: 1, h: 1, id: "ref",
|
||
fill: util.colors.pink,
|
||
ports: (west: ((id: "p", name: "R"),),))
|
||
element.block(x: 5.5, y: -2, w: 1.5, h: 1.5, id: "dst",
|
||
ports: (west: ((id: "i", name: "I"),),))
|
||
// String form: anchor name of a port.
|
||
wire.wire("w1", ("src-port-o", "dst-port-i"),
|
||
style: "zigzag",
|
||
zigzag-at: "ref-port-p")
|
||
// Ergonomic offset: shift 8pt right of ref.east.
|
||
wire.wire("w2", ("src-port-o", "dst-port-i"),
|
||
style: "zigzag",
|
||
zigzag-at: (rel: 8pt, to: "ref.east"))
|
||
```,
|
||
vertical: true,
|
||
)
|
||
|
||
#let u-at = example(
|
||
```
|
||
// `u-at` places the U-bend crossbar on the axis
|
||
// of a referenced anchor, overriding `u-depth`.
|
||
element.block(x: 0, y: 0, w: 1.5, h: 1.5, id: "eA",
|
||
fill: util.colors.orange,
|
||
ports: (east: ((id: "o1"), (id: "o2"))))
|
||
element.block(x: 0, y: -3.5, w: 1.5, h: 1.5, id: "eB",
|
||
fill: util.colors.orange,
|
||
ports: (east: ((id: "i1"), (id: "i2"))))
|
||
element.block(x: 4, y: -2.25, w: 0.6, h: 0.6, id: "ref",
|
||
fill: util.colors.pink)
|
||
// Align one U crossbar with ref.east.
|
||
wire.wire("u1", ("eA-port-o1", "eB-port-i1"),
|
||
style: "u-shape",
|
||
u-at: "ref.east")
|
||
// Ergonomic scalar offset: 1 right of ref.east.
|
||
wire.wire("u2", ("eA-port-o2", "eB-port-i2"),
|
||
style: "u-shape", color: util.colors.blue,
|
||
u-at: (rel: 1, to: "ref.east"))
|
||
```,
|
||
vertical: true,
|
||
)
|
||
|
||
#let s-shape-wire = example(
|
||
```
|
||
// `s-shape` connects endpoints on opposite sides
|
||
// via 5 segments joined at 4 corners (u1-start,
|
||
// u1-end, u2-start, u2-end). Auto-detects axis
|
||
// from port anchors.
|
||
element.block(x: 0, y: 0, w: 1, h: 1, id: "A",
|
||
fill: util.colors.orange,
|
||
ports: (west: ((id: "out"),)))
|
||
element.block(x: 2.5, y: -1.75, w: 1, h: 1, id: "B",
|
||
fill: util.colors.orange,
|
||
ports: (east: ((id: "in"),)))
|
||
wire.wire("s1", ("A-port-out", "B-port-in"),
|
||
style: "s-shape")
|
||
|
||
// Anchor-based override of the crossbar position.
|
||
element.block(x: 5.5, y: 0, w: 1, h: 1, id: "C",
|
||
fill: util.colors.yellow,
|
||
ports: (west: ((id: "out"),)))
|
||
element.block(x: 8.5, y: -1.75, w: 1, h: 1, id: "D",
|
||
fill: util.colors.yellow,
|
||
ports: (east: ((id: "in"),)))
|
||
element.block(x: 7, y: -0.7, w: 0.5, h: 0.5, id: "ref",
|
||
fill: util.colors.pink)
|
||
wire.wire("s2", ("C-port-out", "D-port-in"),
|
||
style: "s-shape",
|
||
s-at-mid: "ref.south")
|
||
|
||
// C-shape degeneration: crossbar outside the
|
||
// endpoint span (s-ratio-mid > 100%).
|
||
element.block(x: 11, y: 0, w: 1, h: 1, id: "E",
|
||
fill: util.colors.green,
|
||
ports: (west: ((id: "out"),)))
|
||
element.block(x: 14, y: -0.75, w: 1, h: 1, id: "F",
|
||
fill: util.colors.green,
|
||
ports: (east: ((id: "in"),)))
|
||
wire.wire("s3", ("E-port-out", "F-port-in"),
|
||
style: "s-shape",
|
||
s-ratio-mid: 200%)
|
||
```,
|
||
vertical: true,
|
||
)
|
||
|
||
#let s-shape-wire-vertical = example(
|
||
```
|
||
// `s-shape` on the vertical axis (north <-> south):
|
||
// seg1 and seg5 are vertical, the crossbar is
|
||
// vertical, and the two horizontals connect them.
|
||
element.block(x: 0, y: 0, w: 1, h: 1, id: "A",
|
||
fill: util.colors.orange,
|
||
ports: (north: ((id: "out"),)))
|
||
element.block(x: 2, y: -3, w: 1, h: 1, id: "B",
|
||
fill: util.colors.orange,
|
||
ports: (south: ((id: "in"),)))
|
||
wire.wire("s1", ("A-port-out", "B-port-in"),
|
||
style: "s-shape")
|
||
|
||
// Anchor-based override of the vertical crossbar.
|
||
element.block(x: 5, y: 0, w: 1, h: 1, id: "C",
|
||
fill: util.colors.yellow,
|
||
ports: (north: ((id: "out"),)))
|
||
element.block(x: 7, y: -3, w: 1, h: 1, id: "D",
|
||
fill: util.colors.yellow,
|
||
ports: (south: ((id: "in"),)))
|
||
element.block(x: 6.25, y: -1.5, w: 0.5, h: 0.5, id: "vref",
|
||
fill: util.colors.pink)
|
||
wire.wire("s2", ("C-port-out", "D-port-in"),
|
||
style: "s-shape",
|
||
s-at-mid: "vref.east")
|
||
```,
|
||
vertical: true,
|
||
)
|
||
|
||
#let s-shape-wire-loopback = example(
|
||
```
|
||
// `s-shape` looping back on a single block that
|
||
// has a west output and an east input. The wire
|
||
// exits west, wraps around below the block via a
|
||
// C-shape, and enters from the east.
|
||
//
|
||
// Since both endpoints share the same y, the
|
||
// crossbar's position is set by `s-ratio-mid`
|
||
// as an absolute distance below the endpoint y.
|
||
element.block(x: 2, y: 0, w: 1.5, h: 1.5, id: "A",
|
||
fill: util.colors.orange,
|
||
ports: (
|
||
west: ((id: "out"),),
|
||
east: ((id: "in"),),
|
||
))
|
||
wire.wire("s1", ("A-port-out", "A-port-in"),
|
||
style: "s-shape",
|
||
s-depth-1: 1.5, s-depth-2: 1.5,
|
||
s-ratio-mid: 150%)
|
||
|
||
// Negative `s-ratio-mid` routes the crossbar the
|
||
// other way (above the block).
|
||
element.block(x: 7, y: 0, w: 1.5, h: 1.5, id: "B",
|
||
fill: util.colors.yellow,
|
||
ports: (
|
||
west: ((id: "out"),),
|
||
east: ((id: "in"),),
|
||
))
|
||
wire.wire("s2", ("B-port-out", "B-port-in"),
|
||
style: "s-shape",
|
||
s-depth-1: 1.5, s-depth-2: 1.5,
|
||
s-ratio-mid: -150%)
|
||
```,
|
||
vertical: true,
|
||
)
|