experimenting with ortho

src/App.tsx

@@ -1,63 +1,92 @@
-import { Canvas, useThree } from "@react-three/fiber";
+import { Canvas } from "@react-three/fiber";
-import { OrbitControls } from "@react-three/drei";
+import {
+  OrbitControls,
+  OrthographicCamera,
+  type OrbitControlsChangeEvent,
+} from "@react-three/drei";
 
 import styles from "./styles.module.scss";
 import "katex/dist/katex.min.css";
 import Point from "./components/Point";
 import Path from "./components/Path";
 import { SettingsBox } from "./SettingsContext";
-import { useCallback } from "react";
+import { useCallback, useState } from "react";
-import { atom, useAtom, useSetAtom } from "jotai";
+import { atom, useAtom } from "jotai";
-import { defaultValues, parseCoord, parsePath } from "./lib/points";
+import { Euler, type Matrix4 } from "three";
 
 // https://threejs.org/manual/#en/align-html-elements-to-3d
 
-function getInitialValue() {
-  try {
-    const h = location.hash;
-    if (h.length === 0) return defaultValues;
-    return JSON.parse(atob(h.replace("#", "")));
-  } catch (e) {
-    console.log("error", e);
-    return defaultValues;
-  }
-}
-
-export const stateAtom = atom<{ [_: string]: string }>(getInitialValue());
-
-export const updateStateAtom = atom(null, (_, set, newValue) => {
-  // @ts-ignore
-  set(stateAtom, newValue);
-  location.hash = btoa(JSON.stringify(newValue));
-});
-
-function AdjustCamera() {
-  useThree(({ camera }) => {
-    camera.position.z = 2;
-  });
-  return <></>;
-}
-
 function App() {
-  const [state] = useAtom(stateAtom);
+  const [rotationMatrix, setRotationMatrix] = useState<Matrix4 | undefined>(
-  const updateStateFunc = useSetAtom(updateStateAtom);
+    undefined,
-
-  console.log("state", state);
-
-  const updateState = useCallback(
-    (z: string, value: string) => {
-      const newState = { ...state, [z]: value };
-      updateStateFunc(newState);
-    },
-    [state]
   );
+  let coords: [number, number, number][] = [
+    [0, 0, 0],
+    [0, 0, 1],
+    [0, 1, 0],
+    [0, 1, 1],
+    [1, 0, 0],
+    [1, 0, 1],
+    [1, 1, 0],
+    [1, 1, 1],
+  ];
+
+  coords = coords.map((a) => [a[0] - 0.5, a[1] - 0.5, a[2] - 0.5]);
+
+  const paths = coords
+    .flatMap((a) => coords.map((b) => [a, b]))
+    .filter(
+      ([[a1, a2, a3], [b1, b2, b3]]) =>
+        [a1 === b1 ? 1 : 0, a2 === b2 ? 1 : 0, a3 === b3 ? 1 : 0].reduce(
+          (x, y) => x + y,
+        ) === 2 &&
+        a1 <= b1 &&
+        a2 <= b2 &&
+        a3 <= b3,
+    );
+
+  const orbitChange = useCallback((evt?: OrbitControlsChangeEvent) => {
+    // if (evt) setRotation(evt.target.object.rotation);
+    console.log(evt?.target.object.toJSON());
+    setRotationMatrix(evt?.target.object.matrix);
+  }, []);
 
   return (
     <div className={styles.container}>
       <SettingsBox />
+      <div className={styles.coordsBox}>
+        <Canvas>
+          <OrthographicCamera
+            makeDefault
+            zoom={200}
+            top={200}
+            bottom={-200}
+            left={-200}
+            right={200}
+            near={-1.5}
+            far={1.5}
+            matrix={rotationMatrix}
+            position={[200, 0, 0]}
+          >
+            <axesHelper />
+          </OrthographicCamera>
+        </Canvas>
+      </div>
       <Canvas className={styles.canvas}>
-        <AdjustCamera />
+        <OrthographicCamera
-        <OrbitControls />
+          makeDefault
+          zoom={200}
+          top={200}
+          bottom={-200}
+          left={-200}
+          right={200}
+          near={-1.5}
+          far={1.5}
+          matrix={rotationMatrix}
+          position={[200, 0, 0]}
+        />
+        <OrbitControls onChange={orbitChange} makeDefault />
+
         <ambientLight intensity={Math.PI / 2} />
         <spotLight
           position={[10, 10, 10]}
@@ -68,34 +97,17 @@ function App() {
         />
         <pointLight position={[-10, -10, -10]} decay={0} intensity={Math.PI} />
 
-        {Object.entries(state).map(([thing, value]) => {
+        {coords.map((coord) => (
-          if (thing.length === 6) {
+          <Point key={JSON.stringify(coord)} coord={coord} />
-            const [start, end] = parsePath(thing);
+        ))}
-            return (
+
-              <Path
+        {paths.map(([start, end]) => (
-                key={thing}
+          <Path key={JSON.stringify([start, end])} start={start} end={end} />
-                start={start}
+        ))}
-                end={end}
-                onEdit={(newValue) => updateState(thing, newValue)}
-                value={value}
-              />
-            );
-          } else if (thing.length === 3) {
-            const coord = parseCoord(thing);
-            return (
-              <Point
-                key={thing}
-                coord={coord}
-                onEdit={(newValue) => updateState(thing, newValue)}
-                value={value}
-              />
-            );
-          }
-        })}
       </Canvas>
       <div className={styles.footer}>
         <a
-          href="https://git.mzhang.io/michael/cubeviz"
+          href="https://git.sr.ht/~mzhang/cubeviz"
           target="_blank"
           rel="noreferrer noopener"
         >

src/SettingsContext.tsx

@@ -1,25 +1,13 @@
-import { atom, useAtom, useAtomValue, useSetAtom } from "jotai";
+import { atom, useAtom } from "jotai";
 import styles from "./styles.module.scss";
-import { stateAtom, updateStateAtom } from "./App";
-import { useCallback } from "react";
 
 export const showEmptyAtom = atom(true);
 
 export function SettingsBox() {
-  const state = useAtomValue(stateAtom);
-  const updateState = useSetAtom(updateStateAtom);
   const [showEmpty, setShowEmpty] = useAtom(showEmptyAtom);
 
-  const doClear = useCallback(() => {
-    updateState(
-      Object.fromEntries(Object.entries(state).map(([a, _]) => [a, ""]))
-    );
-  }, [state]);
-
   return (
     <div className={styles.header}>
-      <button onClick={doClear}>Clear</button>
-
       <input
         type="checkbox"
         id="showEmptyCheckbox"

src/components/EditBox.module.scss

@@ -1,5 +1,6 @@
 .editBox {
     padding: 4px;
+
     transform: translateX(-50%) translateY(-50%);
 }
 

src/components/EditBox.tsx

@@ -1,35 +1,27 @@
-import { type FormEvent, useCallback, useEffect, useState } from "react";
+import { type FormEvent, useCallback, useState } from "react";
 import { BlockMath } from "react-katex";
 
 import styles from "./EditBox.module.scss";
 import { showEmptyAtom } from "../SettingsContext";
 import { useAtomValue } from "jotai";
 
-export interface EditBoxProps {
+// export interface EditBoxProps {}
-  value: string;
-  onUpdate?: (newValue: string) => void;
-}
 
-export default function EditBox({ onUpdate, value }: EditBoxProps) {
+export default function EditBox() {
-  const [innerValue, setInnerValue] = useState("");
+  const [value, setValue] = useState("");
   const [isEditing, setIsEditing] = useState(false);
   const showEmpty = useAtomValue(showEmptyAtom);
 
-  useEffect(() => {
-    setInnerValue(value);
-  }, [value]);
-
   const handleDblClick = useCallback(() => {
     if (!isEditing) setIsEditing(true);
   }, [isEditing]);
 
   const done = useCallback(
     (evt: FormEvent) => {
-      onUpdate?.(innerValue);
       evt.preventDefault();
       if (isEditing) setIsEditing(false);
     },
-    [value, isEditing, innerValue]
+    [isEditing],
   );
 
   return (
@@ -40,8 +32,8 @@ export default function EditBox({ onUpdate, value }: EditBoxProps) {
             // biome-ignore lint/a11y/noAutofocus: <explanation>
             autoFocus={true}
             onBlur={done}
-            value={innerValue}
+            value={value}
-            onChange={(evt) => setInnerValue(evt.target.value)}
+            onChange={(evt) => setValue(evt.target.value)}
             placeholder="Type latex code..."
           />
         </form>

src/components/Path.tsx

@@ -8,11 +8,9 @@ extend({ MeshLineGeometry, MeshLineMaterial });
 export interface PointProps {
   start: [number, number, number];
   end: [number, number, number];
-  value: string;
-  onEdit?: (newValue: string) => void;
 }
 
-export default function Path({ start, end, onEdit, value }: PointProps) {
+export default function Path({ start, end }: PointProps) {
   const midpoint: [number, number, number] = [
     (start[0] + end[0]) / 2.0,
     (start[1] + end[1]) / 2.0,
@@ -25,7 +23,7 @@ export default function Path({ start, end, onEdit, value }: PointProps) {
         <meshBasicMaterial />
       </Line>
       <Html position={midpoint}>
-        <EditBox value={value} onUpdate={onEdit} />
+        <EditBox />
       </Html>
     </>
   );

src/components/Point.tsx

@@ -3,18 +3,16 @@ import EditBox from "./EditBox";
 
 export interface PointProps {
   coord: [number, number, number];
-  value: string;
-  onEdit?: (newValue: string) => void;
 }
 
-export default function Point({ coord, onEdit, value }: PointProps) {
+export default function Point({ coord }: PointProps) {
   return (
     <mesh position={coord}>
       <sphereGeometry args={[0.05]} />
       <meshStandardMaterial color="gray" />
 
       <Html>
-        <EditBox value={value} onUpdate={onEdit} />
+        <EditBox />
       </Html>
     </mesh>
   );

src/lib/points.ts

@@ -1,51 +0,0 @@
-export type coord = [number, number, number];
-const coords: coord[] = [
-  [0, 0, 0],
-  [0, 0, 1],
-  [0, 1, 0],
-  [0, 1, 1],
-  [1, 0, 0],
-  [1, 0, 1],
-  [1, 1, 0],
-  [1, 1, 1],
-];
-
-const ppCoord = (c: coord): string => c.map((n) => n.toString()).join("");
-
-const offset = (a: coord): coord => [a[0] - 0.5, a[1] - 0.5, a[2] - 0.5];
-
-const offsetCoords: [string, coord][] = coords.map((a) => [
-  ppCoord(a),
-  offset(a),
-]);
-
-const paths: [string, [coord, coord]][] = offsetCoords
-  .flatMap((a) => offsetCoords.map((b) => [a, b]))
-  .filter(
-    ([[_a, [a1, a2, a3]], [_b, [b1, b2, b3]]]) =>
-      [a1 === b1 ? 1 : 0, a2 === b2 ? 1 : 0, a3 === b3 ? 1 : 0].reduce(
-        (x, y) => x + y
-      ) === 2 &&
-      a1 <= b1 &&
-      a2 <= b2 &&
-      a3 <= b3
-  )
-  .map(([[aname, acoord], [bname, bcoord]]) => [
-    aname + bname,
-    [acoord, bcoord],
-  ]);
-
-export const defaultValues: [string, string] = Object.fromEntries([
-  ...offsetCoords.map(([a]) => [a, ""]),
-  ...paths.map(([a]) => [a, ""]),
-]);
-
-export function parseCoord(s: string): coord {
-  // @ts-ignore
-  const t: [number, number, number] = s.split("").map((n) => parseInt(n));
-  return offset(t);
-}
-
-export function parsePath(s: string): [coord, coord] {
-  return [parseCoord(s.substring(0, 3)), parseCoord(s.substring(3, 6))];
-}

src/styles.module.scss

@@ -6,6 +6,16 @@
     height: 100%;
 }
 
+.coordsBox {
+    grid-area: 1 / 1;
+    place-self: start end;
+    width: 120px;
+    height: 120px;
+    border: 1px solid gray;
+    z-index: 60;
+    ;
+}
+
 .canvas {
     grid-area: 1 / 1;
     position: relative;