EU Chart_EN
The EU Chart is the core feature of Tab 1 on the Network Info Panel, used to visualize wireless grid energy trends. It simultaneously displays the grid energy level and the EU/t change rate via a dual Y-axis chart, and supports switching between 4 time windows for different time spans.
- Located on Tab 1 of the Network Info Panel (default tab)
- Dual Y-axis: left axis = grid energy, right axis = EU/t change rate
- Supports 4 time windows: 5 minutes / 1 hour / 8 hours / 24 hours
- Brief area shows current energy, average EU/t, realtime EU/t, and grid status
- Uses Fritsch-Carlson monotone cubic Hermite spline for smooth rendering
Module Relationship: The EU Chart is the Tab 1 feature of the Network Info Panel. For the block crafting, extender panel stitching, multi-panel sharing, and other general mechanisms, see 03 Network Info Panel.
The EU Chart uses a dual Y-axis design to display two types of data simultaneously:
| Axis | Data | Color | Description |
|---|---|---|---|
| Left | Grid Energy | Blue | Current wireless grid energy level |
| Right | EU/t Rate | Orange | Energy change rate per tick, reflecting charge/discharge trend |
Design Note: The EU/t rate line color (orange) matches the AE Chart's change-rate line color, allowing players to form consistent color recognition across different tabs.
The EU Chart supports 4 time windows, each being a 61-point FIFO:
| Window | Sample Count | Sample Interval | Total Duration | Description |
|---|---|---|---|---|
| 5 minutes | 61 | 100 ticks (5 s) | 300 s | Raw sampling |
| 1 hour | 61 | 600 ticks (30 s) | 1800 s | Inflow from 5m means |
| 8 hours | 61 | 4800 ticks (240 s) | 14400 s | Inflow from 1h means |
| 24 hours | 61 | 14400 ticks (720 s) | 43200 s | Inflow from 8h means |
The 4 time windows are triggered via a nested count chain:
- 5m → 1h: Every 12 5m samples triggers 1 1h sample
- 1h → 8h: Every 8 1h samples triggers 1 8h sample
- 8h → 24h: Every 3 8h samples triggers 1 24h sample
The count chain ratio is 12 → 8 → 3 (5m → 1h → 8h → 24h).
The brief area shows the following key data:
| Data Item | Calculation | Description |
|---|---|---|
| Current Energy | Real-time read | Current wireless grid energy level |
| Average EU/t | First-last delta | Based on the 61-point window's first and last sample delta (300s window) |
| Realtime EU/t | Latest 2-point slope | Instantaneous change rate from the latest 2 samples |
| Grid Status | Four-branch logic | Calculating / Silent / Long-Term Silent / Normal (see 09 Grid Status Mechanism) |
First-Last Delta Method: Average EU/t = (last energy - first energy) / (last tick - first tick), computed over the 61-point FIFO window. This smooths short-term fluctuations and reflects the overall trend. Uses BigDecimal precise division (6 decimals, HALF_UP) to avoid precision loss when converting BigInteger to double.
The trend line uses the Fritsch-Carlson monotone cubic Hermite spline:
-
Algorithm: The
monotoneCubicPathmethod implements the Fritsch-Carlson monotone cubic Hermite spline - Monotonicity: Preserves monotonicity, avoids overshoot
- Endpoint handling: Natural first/last derivatives, no [0,1] hard clamp
- Smoothing parameter: 0-12
| smoothing | Segments | Description |
|---|---|---|
| 0 | 1 segment | Linear (no smoothing) |
| 1-12 | smoothing × 2 + 2 segments (4-26) | Smooth curve, segments increase with smoothing |
The brief area supports 3 display modes:
| Mode | Name | Display Example |
|---|---|---|
| 0 | Normal | 1,234,567 |
| 1 | Scientific | 1.23E6 |
| 2 | Metric | 1.23K |
Metric mode details: Main display call points use 2 decimals (e.g. 1.23K, 999.00); axis Y tick labels keep no decimals (e.g. 1K) to avoid long labels; negative numbers uniformly use prefix minus (-1.23K). In scientific mode, small values (< 10000.0) auto-fallback to normal display.
All configuration items for the EU Chart (with defaults and ranges):
| Config | Type / Default | Range | Description |
|---|---|---|---|
| trackingWindow | int | 0-3 | Time window (0=5m / 1=1h / 2=8h / 3=24h) |
| trendLineSmoothing | int = 2 | 0-12 | Spline smoothing |
| trendLineThickness | int = 3 | - | Trend line width (glLineWidth) |
| displayMode | int = 0 | 0-2 | Display mode (0=Normal / 1=Scientific / 2=Metric) |
| chartBorderThickness | int = 3 | 1-8 | Chart border width |
| chartBackgroundColor | String = "" | - | Chart background color (empty = no fill) |
| screenBackgroundColor | String | - | Screen background color (empty = no fill) |
| briefRatio | int = 28 | 10-80 | Brief font ratio (getBriefFontScale()=briefRatio/20.0) |
| showBriefEnergy | boolean | - | Brief energy toggle |
| showBriefStatus | boolean | - | Brief status toggle |
| showChartEnergy | boolean | - | Chart energy curve toggle |
| showChartStatus | boolean | - | Chart EU/t curve toggle |
| energyAxisMin / Max | String | - | Energy Y-axis range (empty = auto, with 10% padding) |
| eutAxisMin / Max | String | - | EU/t Y-axis range (empty = auto, with 10% padding) |
- Step 1: Craft and place the Network Info Panel in the world (see 03 Network Info Panel for crafting)
- Step 2: Right-click to open the GUI; the EU Chart tab (Tab 1) is shown by default
- Step 3: Switch between the 4 time windows (5m / 1h / 8h / 24h) in the GUI
- Step 4: Configure trend line smoothing, display mode, Y-axis range, colors, etc.
- Step 5: View the dual Y-axis chart and brief area data to observe grid energy trends and charge/discharge status
Color constants used by the EU Chart:
| Element | Color Value | Color | Description |
|---|---|---|---|
| Energy line | 0x1F6FFF | Blue | Left-axis energy trend line |
| EU/t line | 0xFF7A18 | Orange | Right-axis EU/t rate trend line |
| Axes | 0x4E5964 | Dark gray | Chart axis lines |
| Ticks | 0x6A7680 | Gray | Axis tick labels |