message: clean up UI, add pause at end of path animation
diff: @@ -73,6 +73,7 @@ std::vector<CameraState> g_camPath; // interpolated path through anchors
  int g_camSelectedAnchorIndex = 0;
  int g_camCurrentPathIndex = 0;
  int g_camPathSpeed = 5; // defined in hundredths (e.g. 10 = 10 * 0.01 = 0.1)
  +const int g_camPathPause = 2; // _seconds_ to pause for at end of path
  std::string quatToString(quaternionf &q)
  {
  @@ -344,10 +345,22 @@ void MainWindow::display()
  }
  if (animatingPath) {
  + static int framesPaused = 0;
  CameraState current = g_camPath[g_camCurrentPathIndex];
  arcballCamera->setState(current);
  updateCamera();
  - g_camCurrentPathIndex = (g_camCurrentPathIndex + 1) % g_camPath.size();
  +
  + // pause at the end of the path
  + if (g_camCurrentPathIndex == g_camPath.size() - 1) {
  + framesPaused++;
  + int framesToWait = g_camPathPause * latestFPS;
  + if (framesPaused > framesToWait) {
  + framesPaused = 0;
  + g_camCurrentPathIndex = 0;
  + }
  + } else {
  + g_camCurrentPathIndex++;
  + }
  }
  if (showUi)
  @@ -579,10 +592,11 @@ void MainWindow::buildUI()
  if (autorotate) {
  ImGui::SliderInt("auto rotate speed", &autorotateSpeed, 1, 100);
  }
  - ImGui::Checkbox("camera pathing", &cameraPathing);
  + ImGui::Checkbox("camera keyframing", &cameraPathing);
  if (cameraPathing) {
  - if (ImGui::ListBoxHeader("camera positions")) {
  - if (ImGui::Button("+")) { // add current position after the selected one
  + ImGui::SetNextItemWidth(20 * ImGui::GetFontSize());
  + if (ImGui::ListBoxHeader("##")) {
  + if (ImGui::Button("+")) { // add current camera state after the selected one
  if (g_camAnchors.empty()) {
  g_camAnchors.push_back(arcballCamera->getState());
  g_camSelectedAnchorIndex = 0;
  @@ -593,7 +607,7 @@ void MainWindow::buildUI()
  }
  }
  ImGui::SameLine();
  - if (ImGui::Button("-")) { // remove the selected position
  + if (ImGui::Button("-")) { // remove the selected camera state
  g_camAnchors.erase(g_camAnchors.begin() + g_camSelectedAnchorIndex);
  g_camSelectedAnchorIndex = std::max(0, g_camSelectedAnchorIndex - 1);
  }
  @@ -607,7 +621,13 @@ void MainWindow::buildUI()
  }
  }
  ImGui::SameLine();
  + ImGui::SetNextItemWidth(10 * ImGui::GetFontSize());
  ImGui::SliderInt("speed##path", &g_camPathSpeed, 1, 10);
  + if (ImGui::IsItemHovered()) {
  + ImGui::SetTooltip(
  + "Animation speed for computed path. \n"
  + "Slow speeds may jitter for small objects");
  + }
  }
  for (int i = 0; i < g_camAnchors.size(); i++) {
  if (ImGui::Selectable(
  