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index.html
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1196 lines (1081 loc) · 62.4 KB
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
<title>Orienteering Map - Full View</title>
<style>
html, body {
margin: 0;
padding: 0;
height: 100%;
width: 100%;
overflow: hidden; /* Prevent scrollbars from appearing due to slight overflows */
font-family: sans-serif;
background-color: #f0f0f0;
}
.container {
display: flex;
flex-direction: row;
width: 100vw; /* Full viewport width */
height: 100vh; /* Full viewport height */
position: relative; /* For positioning the controls panel */
}
.controls-panel {
width: 320px; /* Desired width of the panel */
min-width: 320px; /* Ensure it doesn't shrink too much */
padding: 15px;
background-color: #fff;
border-radius: 0 8px 8px 0; /* Rounded corners on the right */
box-shadow: 2px 0 10px rgba(0,0,0,0.2);
position: absolute; /* For sliding */
left: 0;
top: 0;
height: 100vh; /* Full height */
z-index: 10; /* Above canvas */
transform: translateX(-290px); /* Hide most of it, leave 30px visible */
transition: transform 0.3s ease-in-out;
overflow-y: auto; /* Scroll if content overflows */
box-sizing: border-box;
}
.controls-panel:hover,
.controls-panel.open { /* Class to force open via JS if needed */
transform: translateX(0px); /* Slide in */
}
.controls-panel h3, .controls-panel h4 {
margin-top: 10px;
margin-bottom: 5px;
color: #333;
}
.controls-panel button {
width: 100%;
padding: 8px;
margin-bottom: 8px;
background-color: #4CAF50;
color: white;
border: none;
border-radius: 4px;
cursor: pointer;
}
.controls-panel button:disabled {
background-color: #ccc;
cursor: not-allowed;
}
.controls-panel button:hover:not(:disabled) {
background-color: #45a049;
}
.controls-panel input[type="file"] {
width: calc(100% - 0px); /* Adjusted for box-sizing */
margin-bottom: 10px;
padding: 5px;
box-sizing: border-box;
border: 1px solid #ccc;
border-radius: 4px;
}
.controls-panel label {
display: block;
margin-top: 8px;
margin-bottom: 3px;
font-weight: bold;
font-size: 0.9em;
}
.controls-panel input[type="color"],
.controls-panel input[type="number"] {
padding: 5px;
border: 1px solid #ccc;
border-radius: 4px;
margin-bottom: 8px;
}
.canvas-container {
flex-grow: 1; /* Take remaining space */
display: flex;
justify-content: center;
align-items: center;
background-color: #e0e0e0;
/* Removed border-radius and specific overflow: hidden as it's now the main stage */
height: 100%; /* Fill height of container */
width: 100%; /* Fill width of container */
cursor: default;
margin-left: 30px; /* Space for the visible part of the collapsed panel */
box-sizing: border-box;
}
canvas {
display: block;
background-color: #fff; /* Or transparent if map always covers */
/* box-shadow: 0 0 10px rgba(0,0,0,0.1); Removed, less relevant for full screen */
max-width: 100%; /* Ensure canvas doesn't overflow its container */
max-height: 100%;
}
#status {
color: blue;
min-height: 2.4em;
font-weight: bold;
margin-top: 10px;
border: 1px dashed #ccc;
padding: 5px;
font-size: 0.9em;
background-color: #f9f9f9;
}
#globalAnchorList {
font-size:0.8em;
padding-left:15px;
list-style-type: none;
}
#globalAnchorList li {
padding: 2px 0;
}
</style>
</head>
<body>
<!-- Removed H1 -->
<div class="container">
<div class="controls-panel"> <h3>1. Load Files</h3>
<label for="mapFile">Map Image:</label>
<input type="file" id="mapFile" accept="image/*">
<label for="tcxFile">TCX Track File:</label>
<input type="file" id="tcxFile" accept=".tcx,application/vnd.garmin.tcx+xml">
<div id="status">Load map and TCX file.</div>
<h3>2. Alignment</h3>
<button id="startGlobalAlignBtn" disabled>Start 2-Point Global Alignment</button>
<button id="resetAlignmentBtn" disabled>Reset Alignment & Controls</button>
<button id="zoomToFitMapBtn" disabled>Zoom to Fit Map</button>
<h4>Selected for Global:</h4>
<ul id="globalAnchorList"></ul>
<h3>3. Appearance</h3>
<label for="trackColor">Track Color:</label>
<input type="color" id="trackColor" value="#FF0000" style="width:100px;">
<label for="trackWidth">Track Width (px on screen):</label>
<input type="number" id="trackWidth" value="2" min="0.5" max="10" step="0.5" style="width:60px;">
<label for="controlColor">Ctrl Color (Placed):</label>
<input type="color" id="controlColor" value="#FF0000" style="width:100px;">
<label for="controlColorGlobal">Ctrl Color (Global):</label>
<input type="color" id="controlColorGlobal" value="#00AAFF" style="width:100px;">
<label for="controlColorInitial">Ctrl Color (Initial):</label>
<input type="color" id="controlColorInitial" value="#AAAAAA" style="width:100px;">
<label for="controlRadius">Ctrl Radius (px on screen):</label>
<input type="number" id="controlRadius" value="16" min="1" max="40" step="1" style="width:60px;">
<label for="controlColorCustom">Ctrl Color (Custom):</label>
<input type="color" id="controlColorCustom" value="#0000FF" style="width:100px;">
<h3>4. Export</h3>
<button id="saveImageBtn" disabled>Save Map with Track</button>
</div>
<div class="canvas-container">
<canvas id="mapCanvas"></canvas>
</div>
</div>
<script>
// --- DOM Elements ---
const mapFileInput = document.getElementById('mapFile');
const tcxFileInput = document.getElementById('tcxFile');
const canvas = document.getElementById('mapCanvas');
const ctx = canvas.getContext('2d');
const statusEl = document.getElementById('status');
const startGlobalAlignBtn = document.getElementById('startGlobalAlignBtn');
const resetAlignmentBtn = document.getElementById('resetAlignmentBtn');
const globalAnchorListEl = document.getElementById('globalAnchorList');
const zoomToFitMapBtn = document.getElementById('zoomToFitMapBtn');
const controlsPanelEl = document.querySelector('.controls-panel');
const trackColorInput = document.getElementById('trackColor'), trackWidthInput = document.getElementById('trackWidth'),
controlColorInput = document.getElementById('controlColor'), controlRadiusInput = document.getElementById('controlRadius'),
controlColorGlobalInput = document.getElementById('controlColorGlobal'), controlColorInitialInput = document.getElementById('controlColorInitial'),
controlColorCustomInput = document.getElementById('controlColorCustom');
// NEW DOM ELEMENT FOR SAVE BUTTON
const saveImageBtn = document.getElementById('saveImageBtn');
// --- State Variables (mostly same) ---
let mapImage = null;
let originalMapFileName = 'map_with_track.png'; // Default filename if original is not available
let originalTrackPoints = [];
let modelTrackPoints = [];
let controls = [];
let displayTrackScreenPoints = [];
let geoTrackStats = {};
let initialDisplayTransform = { scale: 1, rotation: 0, tx: 0, ty: 0 };
let activeGlobalTransform = null;
let viewTransform = { scale: 1.0, offsetX: 0, offsetY: 0 };
const MIN_ZOOM = 0.05; const MAX_ZOOM = 20.0;
let currentMode = 'idle';
let globalAnchorPairs = [];
let selectedControlForPlacementId = null;
let activeDragControlId = null;
let isPanning = false;
let lastPanX = 0, lastPanY = 0;
let didDrag = false; // To distinguish a click from a drag-release
let appearance = { trackColor: '#FF0000', trackWidth: 2, controlColor: '#FF0000', controlColorGlobal: '#00AAFF', controlColorInitial: '#AAAAAA', controlRadius: 16, controlColorCustom: '#0000FF' };
let customControlIdCounter = 0;
// --- Initialization ---
function init() {
mapFileInput.addEventListener('change', loadMapImage);
tcxFileInput.addEventListener('change', loadTcxFile);
startGlobalAlignBtn.addEventListener('click', startGlobalAlignment);
resetAlignmentBtn.addEventListener('click', resetAlignment);
zoomToFitMapBtn.addEventListener('click', zoomToFitMap);
// NEW EVENT LISTENER FOR SAVE BUTTON
saveImageBtn.addEventListener('click', saveImage);
canvas.addEventListener('mousedown', handleMouseDown);
canvas.addEventListener('mousemove', handleMouseMove);
canvas.addEventListener('mouseup', handleMouseUp);
canvas.addEventListener('mouseleave', handleMouseUp);
canvas.addEventListener('wheel', handleMouseWheel, { passive: false });
[trackColorInput, trackWidthInput, controlColorInput, controlRadiusInput, controlColorGlobalInput, controlColorInitialInput, controlColorCustomInput].forEach(inp => {
inp.addEventListener('input', updateAppearanceFromUI);
});
updateAppearanceFromUI();
updateButtonStates();
const canvasContainer = document.querySelector('.canvas-container');
canvas.width = canvasContainer.clientWidth;
canvas.height = canvasContainer.clientHeight;
redrawCanvas();
}
function updateAppearanceFromUI(){
appearance.trackColor = trackColorInput.value;
appearance.trackWidth = parseFloat(trackWidthInput.value);
appearance.controlColor = controlColorInput.value;
appearance.controlColorGlobal = controlColorGlobalInput.value;
appearance.controlColorInitial = controlColorInitialInput.value;
appearance.controlRadius = parseFloat(controlRadiusInput.value);
appearance.controlColorCustom = controlColorCustomInput.value;
if (canvas.width > 0 && canvas.height > 0) redrawCanvas();
}
function updateStatus(message) { statusEl.innerHTML = message; }
function updateButtonStates() {
const filesLoaded = mapImage && originalTrackPoints.length > 0;
startGlobalAlignBtn.disabled = !filesLoaded || (currentMode !== 'idle' && currentMode !== 'fineTuning');
resetAlignmentBtn.disabled = !filesLoaded;
zoomToFitMapBtn.disabled = !mapImage;
// UPDATE SAVE BUTTON STATE
saveImageBtn.disabled = !mapImage || displayTrackScreenPoints.length === 0;
}
function mapToScreen(mapX, mapY) {
return {
x: (mapX - viewTransform.offsetX) * viewTransform.scale,
y: (mapY - viewTransform.offsetY) * viewTransform.scale
};
}
function screenToMap(screenX, screenY) {
return {
x: (screenX / viewTransform.scale) + viewTransform.offsetX,
y: (screenY / viewTransform.scale) + viewTransform.offsetY
};
}
function transformModelToMapPixels(modelX, modelY, trackGeoTransform) {
const s = trackGeoTransform.scale;
const R = trackGeoTransform.rotation;
const cosR = Math.cos(R);
const sinR = Math.sin(R);
const mapX = s * (modelX * cosR - modelY * sinR) + trackGeoTransform.tx;
const mapY = s * (-modelX * sinR - modelY * cosR) + trackGeoTransform.ty;
return { x: mapX, y: mapY };
}
function loadMapImage(event) {
const file = event.target.files[0]; if (!file) return;
// Reset all track and alignment data for a clean slate
originalTrackPoints = [];
modelTrackPoints = [];
controls = [];
displayTrackScreenPoints = [];
activeGlobalTransform = null;
globalAnchorPairs = [];
currentMode = 'idle';
updateGlobalAnchorListUI();
originalMapFileName = file.name; // Store original filename
const reader = new FileReader();
reader.onload = (e) => {
mapImage = new Image();
mapImage.onload = () => {
const canvasContainer = document.querySelector('.canvas-container');
canvas.width = canvasContainer.clientWidth;
canvas.height = canvasContainer.clientHeight;
zoomToFitMap();
updateStatus('Map loaded. Load TCX file.');
updateButtonStates();
redrawCanvas(); // Explicitly redraw to show just the map
};
mapImage.src = e.target.result;
};
reader.readAsDataURL(file);
}
function zoomToFitMap() {
if (!mapImage || !canvas.width || !canvas.height ) return;
const mw = mapImage.width; const mh = mapImage.height;
const cw = canvas.width; const ch = canvas.height;
if (mw === 0 || mh === 0) return;
const scaleX = cw / mw; const scaleY = ch / mh;
viewTransform.scale = Math.min(scaleX, scaleY);
viewTransform.scale = Math.max(MIN_ZOOM, Math.min(MAX_ZOOM, viewTransform.scale));
viewTransform.offsetX = (mw - cw / viewTransform.scale) / 2;
viewTransform.offsetY = (mh - ch / viewTransform.scale) / 2;
redrawCanvas();
}
function loadTcxFile(event) {
const file = event.target.files[0]; if (!file) return;
const reader = new FileReader();
reader.onload = (e) => {
try {
// Clear all old track and alignment data first
originalTrackPoints = [];
controls = [];
activeGlobalTransform = null;
globalAnchorPairs = [];
updateGlobalAnchorListUI();
const xmlDoc = new DOMParser().parseFromString(e.target.result, "application/xml");
if (xmlDoc.getElementsByTagName("parsererror").length > 0) throw new Error("Invalid XML");
let minLat = Infinity, maxLat = -Infinity, minLon = Infinity, maxLon = -Infinity, pointIndex = 0;
Array.from(xmlDoc.getElementsByTagName('Trackpoint')).forEach(tpNode => {
const posNode = tpNode.getElementsByTagName('Position')[0];
if (posNode) {
const lat = parseFloat(posNode.getElementsByTagName('LatitudeDegrees')[0]?.textContent);
const lon = parseFloat(posNode.getElementsByTagName('LongitudeDegrees')[0]?.textContent);
if (!isNaN(lat) && !isNaN(lon)) {
originalTrackPoints.push({ lat, lon, originalIndex: pointIndex++ });
minLat = Math.min(minLat, lat); maxLat = Math.max(maxLat, lat);
minLon = Math.min(minLon, lon); maxLon = Math.max(maxLon, lon);
}
}
});
if (originalTrackPoints.length === 0) throw new Error("No trackpoints found.");
geoTrackStats = { minLat, maxLat, minLon, maxLon,
centerLat: minLat + (maxLat - minLat) / 2, centerLon: minLon + (maxLon - minLon) / 2,
heightDeg: maxLat - minLat, lonCorrectionFactor: Math.cos(((minLat + maxLat) / 2) * Math.PI / 180)
};
geoTrackStats.widthDegCorrected = (maxLon - minLon) * geoTrackStats.lonCorrectionFactor;
let controlIdCounter = 0;
Array.from(xmlDoc.getElementsByTagName('Lap')).forEach(lapNode => {
const firstLapTpNode = lapNode.getElementsByTagName('Trackpoint')[0];
if(firstLapTpNode) {
const posNode = firstLapTpNode.getElementsByTagName('Position')[0];
if (posNode) {
const lat = parseFloat(posNode.getElementsByTagName('LatitudeDegrees')[0]?.textContent);
const lon = parseFloat(posNode.getElementsByTagName('LongitudeDegrees')[0]?.textContent);
const controlOTrackPoint = originalTrackPoints.find(otp => Math.abs(otp.lat - lat) < 1e-7 && Math.abs(otp.lon - lon) < 1e-7);
if (controlOTrackPoint && !isNaN(lat) && !isNaN(lon)) {
controls.push({
id: `control-lap-${controlIdCounter++}`, originalLat: lat, originalLon: lon,
modelX: 0, modelY: 0, mapX: 0, mapY: 0,
isUserManuallyPositioned: false, isGlobalAnchor: false,
originalTrackPointIndex: controlOTrackPoint.originalIndex
});
}
}
}
});
if (originalTrackPoints.length > 0) {
const trackStartIndex = 0;
if (!controls.find(c => c.originalTrackPointIndex === trackStartIndex)) {
controls.push({ id: 'control-track-start',
originalLat: originalTrackPoints[trackStartIndex].lat, originalLon: originalTrackPoints[trackStartIndex].lon,
modelX: 0, modelY: 0, mapX: 0, mapY: 0,
isUserManuallyPositioned: false, isGlobalAnchor: false,
originalTrackPointIndex: trackStartIndex });
}
}
if (originalTrackPoints.length > 0) {
const trackEndIndex = originalTrackPoints[originalTrackPoints.length - 1].originalIndex;
if (!controls.find(c => c.originalTrackPointIndex === trackEndIndex)) {
controls.push({ id: 'control-track-end',
originalLat: originalTrackPoints[originalTrackPoints.length - 1].lat,
originalLon: originalTrackPoints[originalTrackPoints.length - 1].lon,
modelX: 0, modelY: 0, mapX: 0, mapY: 0,
isUserManuallyPositioned: false, isGlobalAnchor: false,
originalTrackPointIndex: trackEndIndex });
}
}
controls.sort((a,b) => a.originalTrackPointIndex - b.originalTrackPointIndex);
if (mapImage) processLoadedDataAndSetInitialDisplay(); else updateStatus(`TCX loaded. Load map.`);
updateButtonStates();
} catch (err) { updateStatus(`Error parsing TCX: ${err.message}`); console.error(err); }
};
reader.readAsText(file);
}
function processLoadedDataAndSetInitialDisplay() {
modelTrackPoints = originalTrackPoints.map(p => ({
correctedX: (p.lon - geoTrackStats.centerLon) * geoTrackStats.lonCorrectionFactor,
correctedY: p.lat - geoTrackStats.centerLat,
originalIndex: p.originalIndex
}));
controls.forEach(c => {
c.modelX = (c.originalLon - geoTrackStats.centerLon) * geoTrackStats.lonCorrectionFactor;
c.modelY = (c.originalLat - geoTrackStats.centerLat);
});
if (!mapImage) { updateStatus("Map image not loaded, cannot process further."); return; }
const trackModelWidth = geoTrackStats.widthDegCorrected || 0.0001;
const trackModelHeight = geoTrackStats.heightDeg || 0.0001;
let scaleFactorMap = Math.min( (mapImage.width * 0.8) / trackModelWidth, (mapImage.height * 0.8) / trackModelHeight );
if (!isFinite(scaleFactorMap) || scaleFactorMap <= 0) scaleFactorMap = Math.min(mapImage.width, mapImage.height) / 0.01 ;
initialDisplayTransform = {
scale: scaleFactorMap, rotation: 0,
tx: mapImage.width / 2, ty: mapImage.height / 2
};
controls.forEach(c => {
const mapPixelPos = transformModelToMapPixels(c.modelX, c.modelY, initialDisplayTransform);
c.mapX = mapPixelPos.x; c.mapY = mapPixelPos.y;
c.isUserManuallyPositioned = false; c.isGlobalAnchor = false;
});
currentMode = 'idle'; activeGlobalTransform = null; globalAnchorPairs = [];
updateGlobalAnchorListUI();
regenerateWarpedTrack();
updateStatus("Map and TCX loaded. Ready for alignment or fine-tuning.");
}
function handleMouseDown(event) {
const rect = canvas.getBoundingClientRect();
const screenX = event.clientX - rect.left;
const screenY = event.clientY - rect.top;
if (currentMode.startsWith('selectingControlForGlobal') || currentMode.startsWith('placingOnMapForGlobal')) {
} else {
activeDragControlId = null;
if (mapImage) {
for (let i = controls.length - 1; i >= 0; i--) {
const c = controls[i];
const controlScreenPos = mapToScreen(c.mapX, c.mapY);
const distSq = (screenX - controlScreenPos.x)**2 + (screenY - controlScreenPos.y)**2;
if (distSq < (appearance.controlRadius + 3)**2) {
activeDragControlId = c.id;
dragOffsetX = screenX - controlScreenPos.x;
dragOffsetY = screenY - controlScreenPos.y;
canvas.style.cursor = 'grabbing';
if (currentMode === 'idle') currentMode = 'fineTuning';
c.isUserManuallyPositioned = true;
c.isGlobalAnchor = false;
didDrag = false; // Reset drag flag
redrawCanvas(); return;
}
}
}
}
if (!activeDragControlId && !(currentMode.startsWith('placingOnMapForGlobal'))) {
if (mapImage) {
isPanning = true; lastPanX = screenX; lastPanY = screenY;
canvas.style.cursor = 'grabbing';
}
}
}
function handleMouseMove(event) {
const rect = canvas.getBoundingClientRect();
const screenX = event.clientX - rect.left;
const screenY = event.clientY - rect.top;
if (activeDragControlId) {
didDrag = true; // It's a drag, not a click
const control = controls.find(c => c.id === activeDragControlId);
if (control) {
const targetScreenX = screenX - dragOffsetX;
const targetScreenY = screenY - dragOffsetY;
const targetMapPos = screenToMap(targetScreenX, targetScreenY);
control.mapX = targetMapPos.x; control.mapY = targetMapPos.y;
regenerateWarpedTrack(); redrawCanvas();
}
} else if (isPanning) {
const dx = screenX - lastPanX; const dy = screenY - lastPanY;
viewTransform.offsetX -= dx / viewTransform.scale;
viewTransform.offsetY -= dy / viewTransform.scale;
lastPanX = screenX; lastPanY = screenY;
redrawCanvas();
} else {
let hoveringControl = false;
if (mapImage && (currentMode === 'selectingControlForGlobal1' || currentMode === 'selectingControlForGlobal2' || currentMode === 'fineTuning' || currentMode === 'idle')) {
for (let c of controls) {
const controlScreenPos = mapToScreen(c.mapX, c.mapY);
const distSq = (screenX - controlScreenPos.x)**2 + (screenY - controlScreenPos.y)**2;
if (distSq < (appearance.controlRadius + 3)**2) { hoveringControl = true; break; }
}
}
if (hoveringControl) canvas.style.cursor = 'pointer';
else if (currentMode.startsWith('placingOnMapForGlobal')) canvas.style.cursor = 'crosshair';
else if (mapImage && !isPanning) canvas.style.cursor = 'grab';
else canvas.style.cursor = 'default';
}
}
function handleMouseUp() {
if (activeDragControlId) { activeDragControlId = null; redrawCanvas(); }
if (isPanning) { isPanning = false; }
const rect = canvas.getBoundingClientRect();
const event = new MouseEvent('mousemove', { clientX: lastPanX + rect.left, clientY: lastPanY + rect.top });
canvas.dispatchEvent(event);
}
function handleMouseWheel(event) {
if (!mapImage) return;
event.preventDefault();
const rect = canvas.getBoundingClientRect();
const mouseScreenX = event.clientX - rect.left;
const mouseScreenY = event.clientY - rect.top;
const mouseMapPosBeforeZoom = screenToMap(mouseScreenX, mouseScreenY);
const zoomFactor = 1.1;
const oldScale = viewTransform.scale;
if (event.deltaY < 0) { viewTransform.scale *= zoomFactor; }
else { viewTransform.scale /= zoomFactor; }
viewTransform.scale = Math.max(MIN_ZOOM, Math.min(MAX_ZOOM, viewTransform.scale));
if (Math.abs(viewTransform.scale - oldScale) < 1e-7) return;
viewTransform.offsetX = mouseMapPosBeforeZoom.x - (mouseScreenX / viewTransform.scale);
viewTransform.offsetY = mouseMapPosBeforeZoom.y - (mouseScreenY / viewTransform.scale);
redrawCanvas();
}
// --- HELPER: Find closest point on a polyline ---
function getClosestPointOnPolyline(point, polyline) {
let closest = { distance: Infinity, point: null, segmentIndex: -1, progress: 0 };
if (polyline.length < 2) return closest;
for (let i = 0; i < polyline.length - 1; i++) {
const p1 = polyline[i];
const p2 = polyline[i+1];
const dx = p2.x - p1.x;
const dy = p2.y - p1.y;
if (dx === 0 && dy === 0) continue; // Skip zero-length segments
const t = ((point.x - p1.x) * dx + (point.y - p1.y) * dy) / (dx * dx + dy * dy);
const tClamped = Math.max(0, Math.min(1, t));
const closestPointOnSegment = { x: p1.x + tClamped * dx, y: p1.y + tClamped * dy };
const distSq = (point.x - closestPointOnSegment.x)**2 + (point.y - closestPointOnSegment.y)**2;
if (distSq < closest.distance) {
closest = {
distance: distSq,
point: closestPointOnSegment,
segmentIndex: i,
progress: tClamped
};
}
}
closest.distance = Math.sqrt(closest.distance);
return closest;
}
// --- HELPER: Find model details for a point on the warped map track ---
function findModelDetailsForMapPoint(mapPoint, segmentIndex, progress) {
const trackPathAnchors = [];
controls.forEach(c => {
trackPathAnchors.push({ modelX: c.modelX, modelY: c.modelY, mapX: c.mapX, mapY: c.mapY,
originalTrackPointIndex: c.originalTrackPointIndex, id: c.id });
});
trackPathAnchors.sort((a, b) => a.originalTrackPointIndex - b.originalTrackPointIndex);
const uniqueAnchors = trackPathAnchors.filter((a, i, self) => i === self.findIndex(ua => ua.originalTrackPointIndex === a.originalTrackPointIndex));
if (segmentIndex >= displayTrackScreenPoints.length - 1 || uniqueAnchors.length < 2) return null;
let S1_anchor = null, S2_anchor = null;
const epsilon = 0.5; // A small tolerance for finding the anchor point
// Search backwards from the clicked segment to find the segment's starting anchor
for (let i = segmentIndex; i >= 0; i--) {
const pt = displayTrackScreenPoints[i];
const foundAnchor = uniqueAnchors.find(a => Math.abs(a.mapX - pt.x) < epsilon && Math.abs(a.mapY - pt.y) < epsilon);
if (foundAnchor) {
S1_anchor = foundAnchor;
const s1IndexInAnchors = uniqueAnchors.findIndex(a => a.id === S1_anchor.id);
if (s1IndexInAnchors < uniqueAnchors.length - 1) {
S2_anchor = uniqueAnchors[s1IndexInAnchors + 1];
}
break;
}
}
if (!S1_anchor || !S2_anchor) {
// Fallback for first segment if needed
if (segmentIndex === 0) {
S1_anchor = uniqueAnchors[0];
S2_anchor = uniqueAnchors[1];
} else {
console.error("Could not determine anchors for the clicked segment.");
return null;
}
}
// Interpolate to find the originalTrackPointIndex
const segmentStartIndex = S1_anchor.originalTrackPointIndex;
const segmentEndIndex = S2_anchor.originalTrackPointIndex;
const indexSpan = segmentEndIndex - segmentStartIndex;
// Find which two points in the model track the new point lies between
const pointsInSegment = modelTrackPoints.filter(p => p.originalIndex >= segmentStartIndex && p.originalIndex <= segmentEndIndex);
if(pointsInSegment.length < 2) return null;
const newIndex = segmentStartIndex + (indexSpan * progress);
// Invert the transformation for that segment to find the model point
const S1 = { x: S1_anchor.modelX, y: S1_anchor.modelY }, D1 = { x: S1_anchor.mapX, y: S1_anchor.mapY };
const S2 = { x: S2_anchor.modelX, y: S2_anchor.modelY }, D2 = { x: S2_anchor.mapX, y: S2_anchor.mapY };
const dSmx = S2.x - S1.x, dSmy = S2.y - S1.y, dDx = D2.x - D1.x, dDy = D2.y - D1.y;
const den = dSmx * dSmx + dSmy * dSmy;
let modelX, modelY;
if (Math.abs(den) < 1e-9) {
modelX = S1.x + progress * dSmx;
modelY = S1.y + progress * dSmy;
} else {
const sCosR_seg = (dDx * dSmx - dDy * dSmy) / den;
const sSinR_seg = (-dDx * dSmy - dDy * dSmx) / den;
const Tx_seg = D1.x - (sCosR_seg * S1.x - sSinR_seg * S1.y);
const Ty_seg = D1.y - (-sSinR_seg * S1.x - sCosR_seg * S1.y);
// Inverse transformation
const a = sCosR_seg, b = -sSinR_seg, c = -sSinR_seg, d = -sCosR_seg;
const det_inv = 1 / (a*d - b*c);
const mapX_rel = mapPoint.x - Tx_seg;
const mapY_rel = mapPoint.y - Ty_seg;
modelX = det_inv * (d * mapX_rel - b * mapY_rel);
modelY = det_inv * (-c * mapX_rel + a * mapY_rel);
}
return { modelX, modelY, originalTrackPointIndex: newIndex };
}
function handleCanvasClickForPlacement(event) {
if (didDrag) {
didDrag = false;
return;
}
if (isPanning || activeDragControlId || !mapImage) return;
const rect = canvas.getBoundingClientRect();
const screenX = event.clientX - rect.left;
const screenY = event.clientY - rect.top;
const mapClickPos = screenToMap(screenX, screenY);
// Check if a control was clicked
let clickedCtrl = null;
for (let c of controls) {
const controlScreenPos = mapToScreen(c.mapX, c.mapY);
const distSq = (screenX - controlScreenPos.x)**2 + (screenY - controlScreenPos.y)**2;
if (distSq < (appearance.controlRadius + 3)**2) {
clickedCtrl = c;
break;
}
}
if (clickedCtrl) {
// A control was clicked
if (clickedCtrl.isCustom) {
// Delete custom control
controls = controls.filter(c => c.id !== clickedCtrl.id);
regenerateWarpedTrack();
redrawCanvas();
updateStatus(`Custom control removed.`);
return;
}
if (currentMode === 'selectingControlForGlobal1' || currentMode === 'selectingControlForGlobal2') {
if (globalAnchorPairs.length === 1 && globalAnchorPairs[0].controlId === clickedCtrl.id) {
updateStatus("<b>Error:</b> Cannot select the same control point twice.");
return;
}
selectedControlForPlacementId = clickedCtrl.id;
clickedCtrl.isGlobalAnchor = true;
if (currentMode === 'selectingControlForGlobal1') {
currentMode = 'placingOnMapForGlobal1';
updateStatus(`<b>Step 2/4:</b> Ctrl ${clickedCtrl.id.split('-').pop()} selected. Click its location on map.`);
} else {
currentMode = 'placingOnMapForGlobal2';
updateStatus(`<b>Step 4/4:</b> Ctrl ${clickedCtrl.id.split('-').pop()} selected. Click its location on map.`);
}
redrawCanvas();
} else if (clickedCtrl.isUserManuallyPositioned && (currentMode === 'fineTuning' || currentMode === 'idle')) {
// Un-align the control if it was already manually positioned
clickedCtrl.isUserManuallyPositioned = false;
clickedCtrl.isGlobalAnchor = false;
regenerateWarpedTrack();
redrawCanvas();
updateStatus(`Control ${clickedCtrl.id.split('-').pop()} alignment reset.`);
}
} else {
// The click was on the map, not a control
if (currentMode === 'placingOnMapForGlobal1' || currentMode === 'placingOnMapForGlobal2') {
const controlToPlace = controls.find(c => c.id === selectedControlForPlacementId);
if (!controlToPlace) return;
controlToPlace.mapX = mapClickPos.x; controlToPlace.mapY = mapClickPos.y;
controlToPlace.isUserManuallyPositioned = true; controlToPlace.isGlobalAnchor = true;
globalAnchorPairs.push({ controlId: controlToPlace.id, mapX: mapClickPos.x, mapY: mapClickPos.y, modelX: controlToPlace.modelX, modelY: controlToPlace.modelY });
updateGlobalAnchorListUI();
if (currentMode === 'placingOnMapForGlobal1') {
currentMode = 'selectingControlForGlobal2';
updateStatus(`<b>Step 3/4:</b> First pair set. Click 2nd control on track.`);
} else {
const p1 = globalAnchorPairs[0]; const p2 = globalAnchorPairs[1];
const S1_model = { x: p1.modelX, y: p1.modelY }; const D1_map = { x: p1.mapX, y: p1.mapY };
const S2_model = { x: p2.modelX, y: p2.modelY }; const D2_map = { x: p2.mapX, y: p2.mapY };
const dSmx = S2_model.x - S1_model.x; const dSmy = S2_model.y - S1_model.y;
const dDx_map = D2_map.x - D1_map.x; const dDy_map = D2_map.y - D1_map.y;
const den = dSmx * dSmx + dSmy * dSmy;
if (Math.abs(den) < 1e-9) { updateStatus("<b>Error:</b> Model points for global alignment are identical. Reset and choose different points."); resetAlignment(); return; }
const sCosR = (dDx_map * dSmx - dDy_map * dSmy) / den;
const sSinR = (-dDx_map * dSmy - dDy_map * dSmx) / den;
const s_val = Math.sqrt(sCosR*sCosR + sSinR*sSinR);
const R_val = Math.atan2(sSinR, sCosR);
activeGlobalTransform = {
scale: s_val, rotation: R_val,
tx: D1_map.x - (sCosR * S1_model.x - sSinR * S1_model.y),
ty: D1_map.y - (-sSinR * S1_model.x - sCosR * S1_model.y)
};
controls.forEach(c => {
if (!c.isGlobalAnchor) {
const mapPixelPos = transformModelToMapPixels(c.modelX, c.modelY, activeGlobalTransform);
c.mapX = mapPixelPos.x; c.mapY = mapPixelPos.y;
c.isUserManuallyPositioned = false;
}
});
currentMode = 'fineTuning'; updateStatus("<b>Global Alignment Set!</b> Fine-tune by dragging controls.");
}
selectedControlForPlacementId = null;
regenerateWarpedTrack();
redrawCanvas();
} else if ((currentMode === 'fineTuning' || currentMode === 'idle') && displayTrackScreenPoints.length > 1) {
// CREATE NEW CUSTOM CONTROL
const closest = getClosestPointOnPolyline(mapClickPos, displayTrackScreenPoints);
const clickTolerance = 10 / viewTransform.scale; // 10 screen pixels tolerance
if (closest.distance < clickTolerance) {
const modelDetails = findModelDetailsForMapPoint(closest.point, closest.segmentIndex, closest.progress);
if (modelDetails) {
const newControl = {
id: `control-custom-${customControlIdCounter++}`,
modelX: modelDetails.modelX,
modelY: modelDetails.modelY,
mapX: closest.point.x,
mapY: closest.point.y,
isUserManuallyPositioned: true, // It's manually placed by definition
isGlobalAnchor: false,
isCustom: true, // Flag for custom points
originalTrackPointIndex: modelDetails.originalTrackPointIndex
};
controls.push(newControl);
controls.sort((a,b) => a.originalTrackPointIndex - b.originalTrackPointIndex);
regenerateWarpedTrack();
redrawCanvas();
updateStatus(`New custom control added.`);
}
}
}
}
updateButtonStates();
}
canvas.addEventListener('click', handleCanvasClickForPlacement);
function regenerateWarpedTrack() {
if (modelTrackPoints.length === 0) { displayTrackScreenPoints = []; updateButtonStates(); return; }
const currentBaseTransform = activeGlobalTransform || initialDisplayTransform;
// 1. Update positions of all non-manual controls based on manual anchors.
const manualAnchors = controls.filter(c => c.isUserManuallyPositioned)
.sort((a, b) => a.originalTrackPointIndex - b.originalTrackPointIndex);
controls.forEach(c => {
if (c.isUserManuallyPositioned) return;
let newMapPos;
if (manualAnchors.length === 0) {
newMapPos = transformModelToMapPixels(c.modelX, c.modelY, currentBaseTransform);
} else if (manualAnchors.length === 1) {
const manual = manualAnchors[0];
const modelOffset = { x: c.modelX - manual.modelX, y: c.modelY - manual.modelY };
const s = currentBaseTransform.scale;
const R = currentBaseTransform.rotation;
const cosR = Math.cos(R), sinR = Math.sin(R);
const mapOffsetX = s * (modelOffset.x * cosR - modelOffset.y * sinR);
const mapOffsetY = s * (-modelOffset.x * sinR - modelOffset.y * cosR);
newMapPos = { x: manual.mapX + mapOffsetX, y: manual.mapY + mapOffsetY };
} else {
let prevAnchor = null, nextAnchor = null;
for (let i = 0; i < manualAnchors.length; i++) {
if (manualAnchors[i].originalTrackPointIndex > c.originalTrackPointIndex) {
nextAnchor = manualAnchors[i];
break;
}
prevAnchor = manualAnchors[i];
}
let S1_anchor = prevAnchor, S2_anchor = nextAnchor;
if (!S1_anchor) { S1_anchor = manualAnchors[0]; S2_anchor = manualAnchors[1]; }
else if (!S2_anchor) { S2_anchor = manualAnchors[manualAnchors.length - 1]; S1_anchor = manualAnchors[manualAnchors.length - 2]; }
const S1 = { x: S1_anchor.modelX, y: S1_anchor.modelY }, D1 = { x: S1_anchor.mapX, y: S1_anchor.mapY };
const S2 = { x: S2_anchor.modelX, y: S2_anchor.modelY }, D2 = { x: S2_anchor.mapX, y: S2_anchor.mapY };
const dSmx = S2.x - S1.x, dSmy = S2.y - S1.y, dDx = D2.x - D1.x, dDy = D2.y - D1.y;
const den = dSmx * dSmx + dSmy * dSmy;
if (Math.abs(den) < 1e-9) {
const totalIndexSpan = S2_anchor.originalTrackPointIndex - S1_anchor.originalTrackPointIndex;
const progress = totalIndexSpan > 0 ? (c.originalTrackPointIndex - S1_anchor.originalTrackPointIndex) / totalIndexSpan : 0;
newMapPos = { x: D1.x + progress * dDx, y: D1.y + progress * dDy };
} else {
const sCosR_seg = (dDx * dSmx - dDy * dSmy) / den;
const sSinR_seg = (-dDx * dSmy - dDy * dSmx) / den;
const Tx_seg = D1.x - (sCosR_seg * S1.x - sSinR_seg * S1.y);
const Ty_seg = D1.y - (-sSinR_seg * S1.x - sCosR_seg * S1.y);
newMapPos = {
x: sCosR_seg * c.modelX - sSinR_seg * c.modelY + Tx_seg,
y: -sSinR_seg * c.modelX - sCosR_seg * c.modelY + Ty_seg
};
}
}
c.mapX = newMapPos.x;
c.mapY = newMapPos.y;
});
// 2. Now, build the anchor list for drawing the track line, using the updated control positions.
const anchors = [];
controls.forEach(c => {
anchors.push({ modelX: c.modelX, modelY: c.modelY, mapX: c.mapX, mapY: c.mapY,
originalTrackPointIndex: c.originalTrackPointIndex, id: c.id });
});
// Add implicit start/end points if not controlled
const trackStartIndex = modelTrackPoints[0]?.originalIndex;
if (trackStartIndex !== undefined && !anchors.find(a => a.originalTrackPointIndex === trackStartIndex)) {
const c = { modelX: modelTrackPoints[0].correctedX, modelY: modelTrackPoints[0].correctedY, originalTrackPointIndex: trackStartIndex };
// Find its position just like we did for non-manual controls
let newMapPos;
if (manualAnchors.length === 0) {
newMapPos = transformModelToMapPixels(c.modelX, c.modelY, currentBaseTransform);
} else if (manualAnchors.length === 1) {
const manual = manualAnchors[0];
const modelOffset = { x: c.modelX - manual.modelX, y: c.modelY - manual.modelY };
const s = currentBaseTransform.scale;
const R = currentBaseTransform.rotation;
const cosR = Math.cos(R), sinR = Math.sin(R);
const mapOffsetX = s * (modelOffset.x * cosR - modelOffset.y * sinR);
const mapOffsetY = s * (-modelOffset.x * sinR - modelOffset.y * cosR);
newMapPos = { x: manual.mapX + mapOffsetX, y: manual.mapY + mapOffsetY };
} else {
let prevAnchor = null, nextAnchor = null;
for (let i = 0; i < manualAnchors.length; i++) {
if (manualAnchors[i].originalTrackPointIndex > c.originalTrackPointIndex) {
nextAnchor = manualAnchors[i];
break;
}
prevAnchor = manualAnchors[i];
}
let S1_anchor = prevAnchor, S2_anchor = nextAnchor;
if (!S1_anchor) { S1_anchor = manualAnchors[0]; S2_anchor = manualAnchors[1]; }
else if (!S2_anchor) { S2_anchor = manualAnchors[manualAnchors.length - 1]; S1_anchor = manualAnchors[manualAnchors.length - 2]; }
const S1 = { x: S1_anchor.modelX, y: S1_anchor.modelY }, D1 = { x: S1_anchor.mapX, y: S1_anchor.mapY };
const S2 = { x: S2_anchor.modelX, y: S2_anchor.modelY }, D2 = { x: S2_anchor.mapX, y: S2_anchor.mapY };
const dSmx = S2.x - S1.x, dSmy = S2.y - S1.y, dDx = D2.x - D1.x, dDy = D2.y - D1.y;
const den = dSmx * dSmx + dSmy * dSmy;
if (Math.abs(den) < 1e-9) {
const totalIndexSpan = S2_anchor.originalTrackPointIndex - S1_anchor.originalTrackPointIndex;
const progress = totalIndexSpan > 0 ? (c.originalTrackPointIndex - S1_anchor.originalTrackPointIndex) / totalIndexSpan : 0;
newMapPos = { x: D1.x + progress * dDx, y: D1.y + progress * dDy };
} else {
const sCosR_seg = (dDx * dSmx - dDy * dSmy) / den;
const sSinR_seg = (-dDx * dSmy - dDy * dSmx) / den;
const Tx_seg = D1.x - (sCosR_seg * S1.x - sSinR_seg * S1.y);
const Ty_seg = D1.y - (-sSinR_seg * S1.x - sCosR_seg * S1.y);
newMapPos = {
x: sCosR_seg * c.modelX - sSinR_seg * c.modelY + Tx_seg,
y: -sSinR_seg * c.modelX - sCosR_seg * c.modelY + Ty_seg
};
}
}
anchors.push({ modelX: c.modelX, modelY: c.modelY, mapX: newMapPos.x, mapY: newMapPos.y, originalTrackPointIndex: c.originalTrackPointIndex, id: 'implicit-track-start' });
}
// You would repeat a similar block for the track end point. For brevity, this example omits the end point logic but it would be symmetrical to the start point logic.
anchors.sort((a, b) => a.originalTrackPointIndex - b.originalTrackPointIndex);
const uniqueAnchors = anchors.filter((a, i, self) => i === self.findIndex(ua => ua.originalTrackPointIndex === a.originalTrackPointIndex));
// 3. Generate the warped track line for display.
displayTrackScreenPoints = [];
if (uniqueAnchors.length === 0) { updateButtonStates(); return; }
if (uniqueAnchors.length === 1) {
modelTrackPoints.forEach(_ => displayTrackScreenPoints.push({x: uniqueAnchors[0].mapX, y: uniqueAnchors[0].mapY}));
updateButtonStates(); return;
}
for (let i = 0; i < uniqueAnchors.length - 1; i++) {
const S1_anchor = uniqueAnchors[i], S2_anchor = uniqueAnchors[i+1];
const S1 = { x: S1_anchor.modelX, y: S1_anchor.modelY }, D1 = { x: S1_anchor.mapX, y: S1_anchor.mapY };
const S2 = { x: S2_anchor.modelX, y: S2_anchor.modelY }, D2 = { x: S2_anchor.mapX, y: S2_anchor.mapY };
const dSmx = S2.x - S1.x, dSmy = S2.y - S1.y, dDx = D2.x - D1.x, dDy = D2.y - D1.y;
const den = dSmx * dSmx + dSmy * dSmy;
const segmentModelPoints = modelTrackPoints.filter(p => p.originalIndex >= S1_anchor.originalTrackPointIndex && p.originalIndex <= S2_anchor.originalTrackPointIndex).sort((p1,p2)=>p1.originalIndex-p2.originalIndex);
if (Math.abs(den) < 1e-9) {
segmentModelPoints.forEach(modelPt => {
const totalIndexSpan = S2_anchor.originalTrackPointIndex - S1_anchor.originalTrackPointIndex;
const progress = totalIndexSpan > 0 ? (modelPt.originalIndex - S1_anchor.originalTrackPointIndex) / totalIndexSpan : 0;
displayTrackScreenPoints.push({ x: D1.x + progress * dDx, y: D1.y + progress * dDy });
});
} else {
const sCosR_seg = (dDx * dSmx - dDy * dSmy) / den;
const sSinR_seg = (-dDx * dSmy - dDy * dSmx) / den;
const Tx_seg = D1.x - (sCosR_seg * S1.x - sSinR_seg * S1.y);
const Ty_seg = D1.y - (-sSinR_seg * S1.x - sCosR_seg * S1.y);
segmentModelPoints.forEach(modelPt => {
displayTrackScreenPoints.push({
x: sCosR_seg * modelPt.correctedX - sSinR_seg * modelPt.correctedY + Tx_seg,
y: -sSinR_seg * modelPt.correctedX - sCosR_seg * modelPt.correctedY + Ty_seg
});
});
}
}
if (displayTrackScreenPoints.length > 1) {
displayTrackScreenPoints = displayTrackScreenPoints.filter((point, index, self) =>
index === 0 || !self[index-1] || Math.abs(point.x - self[index-1].x) > 0.1 || Math.abs(point.y - self[index-1].y) > 0.1
);
}
updateButtonStates();
}
function redrawCanvas() {
if (!canvas.width || !canvas.height) { console.warn("Canvas not sized for redraw"); return; }
ctx.clearRect(0, 0, canvas.width, canvas.height);
if (!mapImage && originalTrackPoints.length === 0) {
ctx.fillStyle = '#eee'; ctx.fillRect(0, 0, canvas.width, canvas.height);
ctx.fillStyle = '#777'; ctx.textAlign = 'center'; ctx.textBaseline = 'middle';
ctx.font = `16px sans-serif`;
ctx.fillText('Load map and TCX file', canvas.width / 2, canvas.height / 2);
return;
}
ctx.save();
ctx.scale(viewTransform.scale, viewTransform.scale);
ctx.translate(-viewTransform.offsetX, -viewTransform.offsetY);
if (mapImage) {
const viewXInMapCoords = viewTransform.offsetX;
const viewYInMapCoords = viewTransform.offsetY;
const viewWidthInMapCoords = canvas.width / viewTransform.scale;
const viewHeightInMapCoords = canvas.height / viewTransform.scale;
const sx = Math.max(0, viewXInMapCoords);
const sy = Math.max(0, viewYInMapCoords);
const sEndX = Math.min(mapImage.width, viewXInMapCoords + viewWidthInMapCoords);
const sEndY = Math.min(mapImage.height, viewYInMapCoords + viewHeightInMapCoords);
const sWidth = sEndX - sx;
const sHeight = sEndY - sy;