From 67033837b2f1d0341589f6ad4051e3c8e2b0c7e3 Mon Sep 17 00:00:00 2001
From: Karsten Schmidt <k@thi.ng>
Date: Wed, 14 Apr 2021 11:04:28 +0100
Subject: [PATCH] docs(lowdisc): add tool script for dot anims

---
 packages/lowdisc/tools/index.ts      | 36 ++++++++++++++++++++++++++++
 packages/lowdisc/tools/tsconfig.json | 10 ++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 packages/lowdisc/tools/index.ts
 create mode 100644 packages/lowdisc/tools/tsconfig.json

diff --git a/packages/lowdisc/tools/index.ts b/packages/lowdisc/tools/index.ts
new file mode 100644
index 0000000000..6c9d8e3018
--- /dev/null
+++ b/packages/lowdisc/tools/index.ts
@@ -0,0 +1,36 @@
+import { cosineGradient, COSINE_GRADIENTS } from "@thi.ng/color";
+import { asSvg, circle, svgDoc } from "@thi.ng/geom";
+import { setPrecision } from "@thi.ng/hiccup-svg";
+import { Z4 } from "@thi.ng/strings";
+import { mapIndexed, take } from "@thi.ng/transducers";
+import { writeFileSync } from "fs";
+import { plasticND } from "../src";
+
+const W = 600;
+const R = 0.005;
+const NUM_COL = 256;
+
+const grad = cosineGradient(NUM_COL, COSINE_GRADIENTS["blue-magenta-orange"]);
+
+// hiccup-svg output precision
+setPrecision(4);
+
+for (let i = 100, j = 0; i < 5000; i += 100, j++) {
+    writeFileSync(
+        `export/ld-${Z4(j)}.svg`,
+        asSvg(
+            svgDoc(
+                {
+                    width: W,
+                    height: W,
+                    viewBox: "0 0 1 1",
+                },
+                ...mapIndexed(
+                    (k, p: number[]) =>
+                        circle(p, R, { fill: grad[k % NUM_COL] }),
+                    take(i, plasticND(2))
+                )
+            )
+        )
+    );
+}
diff --git a/packages/lowdisc/tools/tsconfig.json b/packages/lowdisc/tools/tsconfig.json
new file mode 100644
index 0000000000..9655cbea10
--- /dev/null
+++ b/packages/lowdisc/tools/tsconfig.json
@@ -0,0 +1,10 @@
+{
+    "extends": "../../../tsconfig.json",
+    "compilerOptions": {
+        "outDir": "../build",
+        "module": "commonjs",
+        "noUnusedLocals": false,
+        "noUnusedParameters": false
+    },
+    "include": ["./**/*.ts", "../src/**/*.ts"]
+}