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(() => {
const createOfficialClimbProfileController = (points) => {
const colorProbe = document.createElement("span");
colorProbe.hidden = true;
document.body.append(colorProbe);
const resolveColor = (name) => {
colorProbe.style.color = `var(${name})`;
return getComputedStyle(colorProbe).color;
};
const colors = {
profileDownhill: resolveColor("--color-profile-downhill"),
profile0To3: resolveColor("--color-profile-0-3"),
profile3To6: resolveColor("--color-profile-3-6"),
profile6To9: resolveColor("--color-profile-6-9"),
profile9To12: resolveColor("--color-profile-9-12"),
profile12Plus: resolveColor("--color-profile-12-plus"),
plotSurface: resolveColor("--color-plot-surface"),
grid: resolveColor("--color-plot-grid"),
subtle: resolveColor("--color-subtle"),
accent: resolveColor("--color-accent"),
};
colorProbe.remove();
const formatDistance = (distance) => `${distance.toFixed(distance < 10 ? 1 : 0)} km`;
const clamp = (value, min, max) => Math.max(min, Math.min(max, value));
const profileStepSizesM = [100, 200, 500, 1000];
const displayStepForLength = (lengthM) => profileStepSizesM.find((stepM) => Math.ceil(lengthM / stepM) <= 30) || profileStepSizesM[profileStepSizesM.length - 1];
const profileBandForSlope = (slopePercent) => {
if (slopePercent < 0) return colors.profileDownhill;
if (slopePercent < 3) return colors.profile0To3;
if (slopePercent < 6) return colors.profile3To6;
if (slopePercent < 9) return colors.profile6To9;
if (slopePercent < 12) return colors.profile9To12;
return colors.profile12Plus;
};
const officialProfileSections = (startIndex, endIndex, stepM) => {
const startDistanceM = points[startIndex].distanceKm * 1000;
const endDistanceM = points[endIndex].distanceKm * 1000;
const sections = [];
let pointIndex = startIndex;
const elevationAtDistance = (distanceM) => {
while (pointIndex < endIndex - 1 && points[pointIndex + 1].distanceKm * 1000 < distanceM) pointIndex++;
const nextIndex = Math.min(pointIndex + 1, endIndex);
const first = points[pointIndex];
const next = points[nextIndex];
const distanceSpan = next.distanceKm * 1000 - first.distanceKm * 1000;
if (distanceSpan <= 0) return first.elevationM;
const fraction = (distanceM - first.distanceKm * 1000) / distanceSpan;
return first.elevationM + clamp(fraction, 0, 1) * (next.elevationM - first.elevationM);
};
for (let sectionStartM = startDistanceM; sectionStartM < endDistanceM; sectionStartM += stepM) {
const sectionEndM = Math.min(sectionStartM + stepM, endDistanceM);
const startElevation = elevationAtDistance(sectionStartM);
const endElevation = elevationAtDistance(sectionEndM);
const slopePercent = (endElevation - startElevation) / (sectionEndM - sectionStartM) * 100;
sections.push({
startDistanceKm: sectionStartM / 1000,
endDistanceKm: sectionEndM / 1000,
startElevation,
endElevation,
slopePercent,
color: profileBandForSlope(slopePercent),
});
}
return sections;
};
const drawOfficialProfile = (profileCanvas) => {
const startIndex = Number.parseInt(profileCanvas.dataset.profileStart, 10);
const endIndex = Number.parseInt(profileCanvas.dataset.profileEnd, 10);
if (!Number.isInteger(startIndex) || !Number.isInteger(endIndex) || startIndex < 0 || endIndex >= points.length || startIndex >= endIndex) return;
const rect = profileCanvas.getBoundingClientRect();
if (rect.width === 0 || rect.height === 0) return;
const context = profileCanvas.getContext("2d");
if (!context) return;
const ratio = window.devicePixelRatio || 1;
profileCanvas.width = Math.floor(rect.width * ratio);
profileCanvas.height = Math.floor(rect.height * ratio);
context.setTransform(ratio, 0, 0, ratio, 0, 0);
const plot = { left: 10, right: rect.width - 10, top: 16, bottom: rect.height - 24 };
const climbLengthM = (points[endIndex].distanceKm - points[startIndex].distanceKm) * 1000;
const sections = officialProfileSections(startIndex, endIndex, displayStepForLength(climbLengthM));
if (sections.length === 0) return;
let minElevation = sections[0].startElevation;
let maxElevation = minElevation;
for (const section of sections) {
minElevation = Math.min(minElevation, section.startElevation, section.endElevation);
maxElevation = Math.max(maxElevation, section.startElevation, section.endElevation);
}
const elevationPadding = Math.max((maxElevation - minElevation) * 0.12, 8);
minElevation -= elevationPadding;
maxElevation += elevationPadding;
const minDistance = sections[0].startDistanceKm;
const maxDistance = sections[sections.length - 1].endDistanceKm;
const distanceSpan = Math.max(maxDistance - minDistance, 0.1);
const elevationSpan = Math.max(maxElevation - minElevation, 1);
const xForDistance = (distanceKm) => plot.left + (distanceKm - minDistance) / distanceSpan * (plot.right - plot.left);
const yForElevation = (elevationM) => plot.bottom - (elevationM - minElevation) / elevationSpan * (plot.bottom - plot.top);
context.clearRect(0, 0, rect.width, rect.height);
context.fillStyle = colors.plotSurface;
context.fillRect(0, 0, rect.width, rect.height);
context.strokeStyle = colors.grid;
context.lineWidth = 1;
context.beginPath();
context.moveTo(plot.left, plot.bottom);
context.lineTo(plot.right, plot.bottom);
context.stroke();
for (const section of sections) {
const startX = xForDistance(section.startDistanceKm);
const endX = xForDistance(section.endDistanceKm);
context.beginPath();
context.moveTo(startX, plot.bottom);
context.lineTo(startX, yForElevation(section.startElevation));
context.lineTo(endX, yForElevation(section.endElevation));
context.lineTo(endX, plot.bottom);
context.closePath();
context.globalAlpha = 0.25;
context.fillStyle = section.color;
context.fill();
context.globalAlpha = 1;
context.beginPath();
context.moveTo(startX, yForElevation(section.startElevation));
context.lineTo(endX, yForElevation(section.endElevation));
context.strokeStyle = section.color;
context.lineWidth = 2.5;
context.stroke();
}
context.font = "9px system-ui, sans-serif";
context.fillStyle = colors.subtle;
context.textBaseline = "bottom";
context.textAlign = "center";
context.save();
context.beginPath();
context.rect(plot.left, plot.top, plot.right - plot.left, plot.bottom - plot.top);
context.clip();
for (const section of sections) {
const startX = xForDistance(section.startDistanceKm);
const endX = xForDistance(section.endDistanceKm);
const label = `${section.slopePercent.toFixed(1)}%`;
const labelY = Math.max(plot.top + 10, Math.min(yForElevation(section.startElevation), yForElevation(section.endElevation)) - 4);
context.fillText(label, (startX + endX) / 2, labelY);
}
context.restore();
let topElevation = sections[0].startElevation;
let topDistance = sections[0].startDistanceKm;
for (const section of sections) {
if (section.startElevation > topElevation) {
topElevation = section.startElevation;
topDistance = section.startDistanceKm;
}
if (section.endElevation > topElevation) {
topElevation = section.endElevation;
topDistance = section.endDistanceKm;
}
}
context.fillStyle = colors.accent;
context.beginPath();
context.arc(xForDistance(topDistance), yForElevation(topElevation), 3.5, 0, 2 * Math.PI);
context.fill();
context.font = "11px system-ui, sans-serif";
context.fillStyle = colors.subtle;
context.textBaseline = "top";
context.textAlign = "left";
context.fillText(formatDistance(0), plot.left, rect.height - 16);
context.textAlign = "right";
context.fillText(formatDistance(maxDistance - minDistance), plot.right, rect.height - 16);
};
const cards = [...document.querySelectorAll("[data-official-climb-card]")];
for (const card of cards) {
card.addEventListener("toggle", () => {
if (!card.open) return;
for (const other of cards) {
if (other !== card) other.open = false;
}
const profileCanvas = card.querySelector("[data-official-profile]");
if (profileCanvas) drawOfficialProfile(profileCanvas);
});
}
return {
redrawOpen: () => {
for (const profileCanvas of document.querySelectorAll("[data-official-profile]")) {
const card = profileCanvas.closest("[data-official-climb-card]");
if (card?.open) drawOfficialProfile(profileCanvas);
}
},
};
};
window.createOfficialClimbProfileController = createOfficialClimbProfileController;
})();
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