Function setZoom

app.js:1184–1196

(newZoom)

// --- Pan / zoom (Figma-like) ---
function setZoom(newZoom) {
  const z = clamp(newZoom, 0.5, 3);
  zoomFactor = z;
  if (zoomSlider) zoomSlider.value = String(Math.round(zoomFactor * 100));
  if (zoomInput) zoomInput.value = String(Math.round(zoomFactor * 100));
  applyViewportTransform();
  if (driverMode === "u8g2") {
    // OLED zoom is applied by recomputing integer scale.
    updatePreviewSize();
    renderElements();
    renderLayers();
  }
}

function zoomAtPoint(clientX, clientY, newZoom) {
  const wrapper = document.querySelector(".preview-wrapper");