This commit introduces a suite of major enhancements to the "Zoom Mode" functionality, focusing on user experience, interaction smoothness, and bug fixes. It refines the data display logic, adds interactive visual feedback, and implements a more intelligent auto-hide behavior.
#### 1. Mouse Smoothing for Zoom Navigation
To address jittery mouse movements at high magnification, a linear interpolation (lerp) filter has been implemented.
- **`radarSketch.js`**: A "smoothed" mouse coordinate is now calculated on each frame when zoom mode is active. This smoothed position is used for all zoom-related logic, including positioning the zoom window's view and detecting hovered items.
- **`drawUtils.js`**: The `handleCloseUpDisplay` function has been updated to accept the smoothed coordinates, ensuring that hover detection is perfectly synchronized with the smoothed visual feedback. This results in a much more fluid and controllable navigation experience in the zoom window.
#### 2. Dynamic and Visual Zoom Feedback
The zoom interaction has been made more intuitive with several visual aids.
- **Variable Hover Radius**: The hover detection radius is now inversely proportional to the zoom factor. This provides a larger, more forgiving selection area when zoomed out and a smaller, more precise area when zoomed in. The formula `constrain(80 / zoomFactor, 5, 25)` is used to keep the radius within a usable range.
- **Zoom Area Rectangle**: A semi-transparent, dashed red rectangle is now drawn on the main radar canvas, centered on the smoothed mouse position. This rectangle visually represents the exact area being magnified in the zoom window.
- **Debug Circle**: For tuning and visualization, a temporary purple circle is drawn on both the main radar canvas and within the zoom sketch. This circle's size dynamically matches the current hover radius, making it easy to see the selection area at any zoom level.
#### 3. Intelligent Auto-Hide with Countdown
The behavior of the zoom window when the user stops hovering over points has been significantly improved.
- **Grace Period**: A 2-second grace period has been added. When the user stops hovering, the zoom window remains active and continues to follow the mouse for 2 seconds before any closing action begins.
- **Visual Countdown**: After the grace period, a 3-second countdown is initiated. The zoom window displays a "Closing in 3... 2... 1..." message, clearly communicating its state to the user.
- **State Management**: The logic in `radarSketch.js` and `state.js` was refactored to correctly manage the delay timer (`zoomHideDelayTimeout`) and the countdown interval (`zoomCountdownInterval`), ensuring the grace period works as intended and the UI updates smoothly.
#### 4. Bug Fixes and Data Consistency
- **Data Synchronization**: Corrected a critical bug where tooltips and rendered markers were using data from different frames. All drawing and tooltip logic in `radarSketch.js`, `zoomSketch.js`, and `drawUtils.js` has been unified to use data exclusively from the `appState.currentFrame`.
- **Console Warning Fix**: Resolved a persistent `CanvasTextAlign` error in the console caused by an incorrect `textAlign(p.LEFT - 2)` call in `zoomSketch.js`.
These changes culminate in a more robust, intuitive, and polished zoom feature that is both more powerful for analysis and more pleasant to use.
This commit introduces significant improvements to the "Zoom Mode" (Close-Up Display) functionality and resolves critical data synchronization bugs related to tooltips and marker rendering.
#### 1. Interactive Zoom Enhancements
To improve user experience and provide better visual feedback during zoom operations, the following features have been added:
- **Dynamic Hover Radius:** The hover detection radius is now inversely proportional to the zoom factor (`appState.zoomFactor`). This provides a larger, more forgiving selection area when zoomed out and a smaller, more precise area when zoomed in. The formula `constrain(80 / zoomFactor, 5, 25)` is used to keep the radius within a usable range.
- **Visual Zoom Area Rectangle:** A semi-transparent, dashed red rectangle is now drawn on the main radar canvas around the mouse cursor. This rectangle visually represents the exact area being displayed in the zoom window, making it clear what is being magnified.
- **Debug Hover Circle:** For tuning and visualization purposes, a temporary purple circle is drawn around the cursor, matching the dynamic hover radius. This makes it easy to see the current size of the selection area as the user zooms in and out with the scroll wheel.
#### 2. Tooltip and Data Display Fixes
A core issue was identified where tooltips and rendered markers were using data from different frames, causing a disconnect between the visualization and the information displayed.
- **Corrected Data Source:** The logic has been unified across `radarSketch.js`, `zoomSketch.js`, and `drawUtils.js` to ensure that both the track markers (`correctedPosition`) and the predicted position markers (`predictedPosition`) are drawn using data exclusively from the `appState.currentFrame`.
- **Aligned Tooltip Information:** The `handleCloseUpDisplay` function was corrected to fetch tooltip data for all markers from the current frame's log. This ensures the connecting lines from the tooltip point to the correct markers on the screen and that the displayed coordinate data matches what is being rendered.
#### 3. Bug Fix: Console Warning
- **Resolved `CanvasTextAlign` Error:** Fixed a persistent console warning (`The provided value 'NaN' is not a valid enum value of type CanvasTextAlign`). The error was caused by an incorrect `textAlign(p.LEFT - 2)` call in `zoomSketch.js`. This has been corrected to the valid `textAlign(p.LEFT, p.TOP)`, eliminating the console spam.
These changes result in a more intuitive, accurate, and bug-free user experience when using the close-up display and inspecting track data.
**Modified Files:**
- `src/p5/radarSketch.js`
- `src/p5/zoomSketch.js`
- `src/drawUtils.js`
This commit introduces several major improvements to the "God Mode" zoom sketch, making it more intuitive and robust. It also resolves two critical race-condition bugs related to canvas resizing and initial data loading.
**Features:**
- **Automatic Zoom on Hover:** The zoom sketch now appears automatically when the user hovers over any data point (track, point cloud, etc.) and disappears after a configurable cooling-off period. This provides a more dynamic and professional user experience, allowing for quick inspection without manual toggling. The zoom window now smoothly follows the cursor during this cooling-off period.
- **Point Index in Tooltip:** The zoom sketch tooltip has been enhanced to display the index of the hovered point within its `pointCloud` array (e.g., "Point 123"). This adds valuable context for debugging and detailed data analysis.
**Bug Fixes:**
- **fix(p5):** Resolves a critical bug where the zoom sketch would go blank after the browser window was resized. This was caused by a race condition where the sketch's canvas was being resized to 0x0 before its container had updated. The fix defers the resize call and correctly destroys the old canvas, allowing it to be recreated with the proper dimensions.
- **fix(loading):** Corrects a race condition in the drag-and-drop file loading pipeline (`processFilePipeline`). The speed graph sketch will now reliably initialize on the first load, as the code now uses `Promise.all` to ensure both the JSON data is parsed and the video's metadata (duration) is available before attempting to render the visualization.
Adds a new zoom panel that provides a magnified, real-time view of the area under the cursor when "Close-Up Mode" is active. This feature enhances the tool's precision for detailed data analysis.
Key features and fixes include:
- Renders a high-fidelity, vector-based redraw of the scene, not a pixelated image.
- Implemented dynamic zoom control via the mouse wheel when hovering over the main radar canvas.
- The zoom sketch is fully decoupled from the main radar sketch to ensure stability and prevent UI freezes.
- Includes a self-contained tooltip within the zoom window that correctly scales its size and text to match the zoom level.
- The tooltip's position is now smart, dynamically moving to the least cluttered quadrant to avoid obstructing data points.
- Connector lines and item highlighting are now fully functional and styled to match the main view's tooltip.
Motion state added in the persistent overlays
This commit introduces a major feature release, adding powerful new tools for data analysis and significantly enhancing the user experience and application robustness.
### ✨ Advanced Visualization & Analysis
* **Custom TTC Coloring Scheme**: Implemented a new UI panel allowing users to switch between the default TTC coloring and a fully customizable scheme. Users can now define their own time thresholds and colors for Critical, High, Medium, and Low risk TTC categories on the fly, with the visualization updating in real-time. [cite: steps/src/drawUtils.js, steps/index.html]
* **Persistent Info Overlays**: Added new, always-on overlays to the top-left of both the radar and video views. These display critical diagnostic information, including frame numbers, absolute UTC time, and real-time synchronization drift. [cite: steps/src/dom.js]
### 🚀 Workflow & UX Enhancements
* **Session Management**: Added "Save Session" and "Load Session" functionality. Users can now save their complete setup (loaded filenames, time offset, toggle states) to a JSON file and restore it later, which reloads the application with the exact same configuration. [cite: steps/src/main.js]
* **Advanced Timeline Navigation**:
* **Scroll-to-Seek**: The timeline slider now supports seeking via the mouse scroll wheel, with a dynamic acceleration feature for faster navigation through long recordings. [cite: steps/src/main.js]
* **Scrub Preview**: A tooltip now appears when hovering over the timeline, showing the precise frame and timestamp under the cursor for more accurate seeking. [cite: steps/src/main.js]
### 🐛 Bug Fixes & Robustness
* **Malformed Data Handling**: The application is now resilient to malformed `track` objects in the JSON data. The drawing functions in `drawUtils.js` now include robust safeguards that detect tracks missing a `historyLog`, print a detailed warning to the console, and safely skip them instead of crashing. [cite: steps/src/drawUtils.js]
* **File Load Order**: Fixed a critical bug where the speed graph would fail to load if the video file was loaded before the JSON file. The logic now correctly creates the graph regardless of the file loading sequence. [cite: steps/src/main.js]
* **UI Initialization**: Resolved a `ReferenceError` caused by event listeners running before the DOM was fully loaded. The custom TTC control logic is now correctly initialized after the `DOMContentLoaded` event, ensuring stability.
