From 819fef2e67bf32e4e685733792d44c998083d76b Mon Sep 17 00:00:00 2001
From: Catalin Constantin Mititiuc <webdevcat@proton.me>
Date: Mon, 16 Jun 2025 22:41:28 -0700
Subject: [PATCH] WIP: line draw, localstorage settings

---
 index.html |   5 +-
 index.js   | 202 ++++++++++++++++++++++++++++++++++++++++++++++++-----
 style.css  |  38 +++++++---
 3 files changed, 216 insertions(+), 29 deletions(-)

diff --git a/index.html b/index.html
index 309e976..536940d 100644
--- a/index.html
+++ b/index.html
@@ -150,8 +150,8 @@
       </defs>
 
       <rect id="background" x="-1" y="-1" width="2287" height="3087" />
-      <image id="map2" class="map-scans" href="scans/map2.jpg" width="2284" height="1518" x="2" y="2" />
-      <image id="map3" class="map-scans" href="scans/map3.jpg" width="2284" height="1518" x="4" y="1564" />
+      <!-- <image id="map2" class="map-scans" href="scans/map2.jpg" width="2284" height="1518" x="2" y="2" />
+      <image id="map3" class="map-scans" href="scans/map3.jpg" width="2284" height="1518" x="4" y="1564" /> -->
       <g id="firing-arcs"></g>
       <rect id="map" x="-1" y="-1" width="2287" height="3087" />
       <g id="points"></g>
@@ -159,6 +159,7 @@
     </svg>
 
     <div id="content">
+      <input type="checkbox" class="visible" checked />
       <div>
         Set firing arc:
         <button type="button" class="set-firing-arc" data-size="small">
diff --git a/index.js b/index.js
index 4845aea..6393721 100644
--- a/index.js
+++ b/index.js
@@ -63,14 +63,17 @@ const svgns = "http://www.w3.org/2000/svg",
       svg = document.querySelector('svg'),
       map = document.querySelector('rect#map'),
       hex = document.getElementById('point'),
-      pointsGroup = document.getElementById('points'),
-      settingsPanel = document.getElementById('panel');
+      ptGrp = document.getElementById('points'),
+      settingsPanel = document.getElementById('panel'),
+      recordSheetVisibility = document.querySelector('#content input[type="checkbox"].visible');
 
 const { x: VIEWBOX_X, y: VIEWBOX_Y, width: VIEWBOX_WIDTH, height: VIEWBOX_HEIGHT } =
   svg.viewBox.baseVal;
 
-const COLUMN_COUNT = 33,
-      ROW_COUNT = 51,
+// const COLUMN_COUNT = 33,
+//       ROW_COUNT = 51,
+const COLUMN_COUNT = 20,
+      ROW_COUNT = 20,
       HORZ_POINT_DISTANCE = 1.005,
       VERT_POINT_DISTANCE = Math.sqrt(3) * HORZ_POINT_DISTANCE / 2,
       ALTERNATING_OFFSET = HORZ_POINT_DISTANCE / 2,
@@ -85,9 +88,21 @@ const FIRING_ARC_SIZE = {
         'large': Math.atan((21 * HORZ_POINT_DISTANCE) / (6 * VERT_POINT_DISTANCE))
       }
 
-Object.values(settingsPanel.querySelectorAll('fieldset')).forEach(fieldset => {
+let prevVb = localStorage.getItem('viewBox');
+let recVis = localStorage.getItem('recordsVisibility');
+
+if (prevVb) {
+  svg.setAttributeNS(null, 'viewBox', prevVb);
+}
+
+if (recVis == 'false') {
+  recordSheetVisibility.checked = false;
+}
+
+// Object.values(settingsPanel.querySelectorAll('fieldset')).forEach(fieldset => {
+[].forEach(fieldset => {
   const target = document.getElementById(fieldset.name);
-  const transform = window.getComputedStyle(target).transform.match(/-?\d+\.?\d*/g);
+  const transform = getComputedStyle(target).transform.match(/-?\d+\.?\d*/g);
   const inputs = fieldset.querySelectorAll('input');
 
   if (transform) {
@@ -131,9 +146,12 @@ POINTS.forEach((row, index) => row.forEach(([x, y]) => {
       cy = y * 3 / 2 * CIRCUMRADIUS,
       point = document.createElementNS(svgns, 'use');
 
+  cx = parseFloat(cx.toFixed(1));
+  cy = parseFloat(cy.toFixed(1));
+
   point.setAttributeNS(null, 'href', `#point`);
-  point.setAttributeNS(null, 'x', `${parseFloat(cx.toFixed(1))}`);
-  point.setAttributeNS(null, 'y', `${parseFloat(cy.toFixed(1))}`);
+  point.setAttributeNS(null, 'x', cx);
+  point.setAttributeNS(null, 'y', cy);
   point.dataset.x = x;
   point.dataset.y = y;
 
@@ -146,21 +164,20 @@ POINTS.forEach((row, index) => row.forEach(([x, y]) => {
           {troopNumber, troopAllegiance} = selectedSoldier.dataset,
           selector = troopSelector(troopNumber, troopAllegiance);
 
-      let matrix = window.getComputedStyle(pointsGroup).transform.match(/-?\d+\.?\d*/g),
-          svgMatrix = new DOMMatrix(matrix || ''),
+      let transProp = getComputedStyle(ptGrp).transform.match(/-?\d+\.?\d*/g),
+          mtx = new DOMMatrix(transProp || ''),
           pt = new DOMPoint(point.x.baseVal.value, point.y.baseVal.value),
-          svgP = pt.matrixTransform(svgMatrix);
+          svgP = pt.matrixTransform(mtx);
 
-      counter.setAttributeNS(null, 'cx', `${parseFloat(svgP.x.toFixed(1))}`);
-      counter.setAttributeNS(null, 'cy', `${parseFloat(svgP.y.toFixed(1))}`);
+      counter.setAttributeNS(null, 'cx', svgP.x);
+      counter.setAttributeNS(null, 'cy', svgP.y);
       counter.setAttributeNS(null, 'r', '0.25in');
       counter.dataset.troopNumber = troopNumber;
       counter.dataset.troopAllegiance = troopAllegiance;
       counter.classList.add('counter');
 
-      text.setAttributeNS(null, 'text-anchor', 'middle');
-      text.setAttributeNS(null, 'x', `${svgP.x}`);
-      text.setAttributeNS(null, 'y', `${svgP.y}`);
+      text.setAttributeNS(null, 'x', svgP.x);
+      text.setAttributeNS(null, 'y', svgP.y);
       text.dataset.troopNumber = troopNumber;
       text.dataset.troopAllegiance = troopAllegiance;
       text.textContent = troopNumber;
@@ -233,9 +250,146 @@ POINTS.forEach((row, index) => row.forEach(([x, y]) => {
 
   point.addEventListener('mouseout', e => e.target.removeAttribute('class'));
 
-  pointsGroup.appendChild(point);
+  ptGrp.appendChild(point);
+
+  text = document.createElementNS(svgns, 'text'),
+
+  text.setAttributeNS(null, 'x', cx);
+  text.setAttributeNS(null, 'y', cy);
+  text.textContent = `${point.dataset.x},${point.dataset.y}`;
+
+  ptGrp.appendChild(text);
 }));
 
+(function debug() {
+  function drawLine(x1, y1, x2, y2) {
+    let start = ptGrp.querySelector(`[data-x="${x1}"][data-y="${y1}"]`);
+    let end = ptGrp.querySelector(`[data-x="${x2}"][data-y="${y2}"]`);
+    let [startX, startY] = [start.x.baseVal.value, start.y.baseVal.value];
+    let [endX, endY] = [end.x.baseVal.value, end.y.baseVal.value];
+
+    let startP = new DOMPoint(startX, startY);
+    let endP = new DOMPoint(endX, endY);
+
+    let tStart = startP.matrixTransform(mtx);
+    let tEnd = endP.matrixTransform(mtx);
+
+    let line = document.createElementNS(svgns, 'line');
+    line.setAttributeNS(null, 'x1', tStart.x);
+    line.setAttributeNS(null, 'y1', tStart.y);
+    line.setAttributeNS(null, 'x2', tEnd.x);
+    line.setAttributeNS(null, 'y2', tEnd.y);
+    line.classList.add('debug');
+
+    line.setAttributeNS(null, 'stroke', 'green');
+    line.setAttributeNS(null, 'stroke-width', 10);
+    svg.appendChild(line);
+
+    return line;
+  }
+
+  let transProp = getComputedStyle(ptGrp).transform.match(/-?\d+\.?\d*/g),
+      mtx = new DOMMatrix(transProp || ''),
+      circR = (new DOMPoint(0, 3 * CIRCUMRADIUS / 2)).matrixTransform(mtx).y * 2 / 3;
+
+  // let l1 = drawLine(1, 1, 1, 2);
+
+  drawLine(0, 0, 5, 4);
+  // drawLine(1, 1, 1, 3);
+
+  // let pt = l1.getPointAtLength(circR);
+
+  // let c = document.createElementNS(svgns, 'circle');
+  // c.setAttributeNS(null, 'cx', pt.x);
+  // c.setAttributeNS(null, 'cy', pt.y);
+  // c.setAttributeNS(null, 'r', 20);
+  // c.setAttributeNS(null, 'fill', 'red');
+  // c.setAttributeNS(null, 'opacity', '0.2');
+  // svg.appendChild(c);
+})();
+
+function evenr_to_axial(x, y) {
+  return {q: x - (y + (y & 1)) / 2, r: y};
+}
+
+function axial_to_evenr(q, r) {
+  return {x: q + (r + (r & 1)) / 2, y: r};
+}
+
+function axial_distance(q1, r1, q2, r2) {
+  return (Math.abs(q1 - q2) + Math.abs(q1 + r1 - q2 - r2) + Math.abs(r1 - r2)) / 2;
+}
+
+function offset_distance(x1, y1, x2, y2) {
+  let { q: q1, r: r1 } = evenr_to_axial(x1, y1),
+      { q: q2, r: r2 } = evenr_to_axial(x2, y2);
+
+  return axial_distance(q1, r1, q2, r2);
+}
+
+function cube_to_axial(q, r, s) {
+  return { q: q, r: r };
+}
+
+function axial_to_cube(q, r) {
+  return { q: q, r: r, s: -q - r};
+}
+
+function cube_round(q, r, s) {
+  rQ = Math.round(q);
+  rR = Math.round(r);
+  rS = Math.round(s);
+
+  let q_diff = Math.abs(rQ - q),
+      r_diff = Math.abs(rR - r),
+      s_diff = Math.abs(rS - s);
+
+  if (q_diff > r_diff && q_diff > s_diff) {
+    rQ = -rR - rS;
+  } else if (r_diff > s_diff) {
+    rR = -rQ - rS;
+  } else {
+    rS = -rQ - rR;
+  }
+
+  return {q: rQ, r: rR, s: rS};
+}
+
+function axial_round(q, r) {
+  let cube = axial_to_cube(q, r),
+      round = cube_round(cube.q, cube.r, cube.s),
+      axial = cube_to_axial(round.q, round.r, round.s);
+
+  return {q: axial.q, r: axial.r};
+}
+
+function lerp(a, b, t) {
+  return a + (b - a) * t;
+}
+
+function axial_lerp(q1, r1, q2, r2, t) {
+  return { q: lerp(q1, q2, t), r: lerp(r1, r2, t) };
+}
+
+function linedraw(x1, y1, x2, y2) {
+  let axial1 = evenr_to_axial(x1, y1),
+      axial2 = evenr_to_axial(x2, y2),
+      n = offset_distance(x1, y1, x2, y2),
+      results = [];
+
+  for (let i = 0; i <= n; i++) {
+    let lerp = axial_lerp(axial1.q, axial1.r, axial2.q, axial2.r, 1.0 / n * i),
+        round = axial_round(lerp.q, lerp.r),
+        { x, y } = axial_to_evenr(round.q, round.r)
+
+    console.log(x, y);
+
+    results.push([x, y]);
+  }
+
+  return results;
+}
+
 map.addEventListener('mousemove', e => {
   let boundingRect = e.target.getBoundingClientRect();
   let pointerX = e.clientX - boundingRect.left;
@@ -462,7 +616,10 @@ svg.addEventListener('wheel', e => {
   // newX = newX < VIEWBOX_X ? VIEWBOX_X : newX;
   // newY = newY < VIEWBOX_Y ? VIEWBOX_Y : newY;
 
-  svg.setAttributeNS(null, 'viewBox', `${newX} ${newY} ${newWidth} ${newHeight}`);
+  let vb = `${newX} ${newY} ${newWidth} ${newHeight}`
+
+  localStorage.setItem('viewBox', vb);
+  svg.setAttributeNS(null, 'viewBox', vb);
 });
 
 svg.addEventListener('pointerdown', e => {
@@ -493,7 +650,10 @@ svg.addEventListener('pointerdown', e => {
             moveX = parseInt(svgStartPt.x - svgMovePt.x + x),
             moveY = parseInt(svgStartPt.y - svgMovePt.y + y);
 
-      svg.setAttributeNS(null, 'viewBox', `${moveX} ${moveY} ${width} ${height}`);
+      let vb = `${moveX} ${moveY} ${width} ${height}`;
+
+      localStorage.setItem('viewBox', vb);
+      svg.setAttributeNS(null, 'viewBox', vb);
     }
   }
 
@@ -505,4 +665,8 @@ svg.addEventListener('pointerdown', e => {
 
   svg.addEventListener('pointermove', pointerMove);
   svg.addEventListener('pointerup', pointerUp);
+});
+
+recordSheetVisibility.addEventListener('input', e => {
+  localStorage.setItem('recordsVisibility', recordSheetVisibility.checked);
 });
\ No newline at end of file
diff --git a/style.css b/style.css
index 68e5294..8de53aa 100644
--- a/style.css
+++ b/style.css
@@ -8,14 +8,21 @@ body {
 svg {
   background-color: darkgray;
   flex-basis: 100%;
-  /* transform: rotate(-90deg);
-  transform-origin: center; */
   /* max-height: 50vh; */
   /* max-height: 100vw; */
 }
 
 svg text {
   user-select: none;
+  font-size: 4px;
+  fill: white;
+  stroke: black;
+  stroke-width: 0.2px;
+  font-weight: bold;
+  transform: translateY(6px);
+  font-family: monospace;
+  text-anchor: middle;
+  /* display: none; */
 }
 
 div#content {
@@ -27,6 +34,7 @@ div#content {
   max-height: 100vh;
   flex-direction: column;
   /* padding: 2px; */
+  position: relative;
 }
 
 #content > div:first-of-type {
@@ -34,6 +42,23 @@ div#content {
   border-bottom: 1px solid gray;
 }
 
+#content > div {
+  display: none;
+}
+
+#content input[type="checkbox"].visible {
+  position: absolute;
+  right: 0;
+}
+
+#content:has(input[type="checkbox"].visible:checked) > div {
+  display: block;
+}
+
+#content:has(input[type="checkbox"].visible:checked) div#record-sheet {
+  display: flex;
+}
+
 #record-sheet {
   /* max-height: 100%; */
   overflow-y: auto;
@@ -73,13 +98,14 @@ div#content {
 }
 
 svg > defs > #point {
-  fill: transparent;
+  fill: teal;
+  fill-opacity: 0.5;
   stroke: black;
   stroke-width: 0.5px;
 }
 
 use[href="#point"] {
-  opacity: 0;
+  opacity: 0.2;
 }
 
 use[href="#point"].active {
@@ -90,10 +116,6 @@ g#points {
   transform: translate(19px, 31px) scale(4);
 }
 
-g#test {
-  transform: scale(2);
-}
-
 #background {
   fill: #bacae3;
 }