Markus Zehnder
66 lines
1.9 KiB
Markdown
66 lines
1.9 KiB
Markdown
# Sensor Mode 4 Pointer
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A pointer sensor rotates an image at a certain angle calculated from the current sensor value and alpha-blends it with
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the panel image.
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Sensor configuration fields:
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- `mode`: 4 (for pointer)
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- `direction`: 1 = clockwise, 2 = counter-clockwise
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- `label`: label identifier, also used as sensor value data source identifier
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- `x`, `y`: position on the panel
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- `width`, `height`: size of the pointer
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- `pic`: pointer image to overlay. Should match `width`, `height`, otherwise it will be resized
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- `minAngle`, `maxAngle`: range of the rotated image
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- `minValue`, `maxValue`: scaling range to apply on the value for `minAngle` .. `maxAngle` (to be verified)
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- `xz_x`, `xz_y`
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## Example
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The following configuration and graphics are taken from the `三环_windows` panel configuration in `有线网卡 windows驱动.rar`.
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Example `panel.json` with a single "pointer" indicator sensor and the following (partial) background image in `img`:
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<img src="img/sensor_mode4_background.png" alt="sensor mode 4 background image example">
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```json
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{
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"name": "Pointer test panel",
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"img": "background.jpg",
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"sensor": [
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{
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"id": "a9d4acac-2af9-4fe0-9f69-86cd09f25696",
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"itemName": "CPU dial",
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"mode": 4,
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"direction": 1,
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"label": "cpu_percent",
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"value": "47.7",
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"x": 160,
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"y": 208,
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"width": 302,
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"height": 302,
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"minAngle": -110,
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"maxAngle": 110,
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"minValue": 0,
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"maxValue": 90,
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"xz_x": 0,
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"xz_y": 0,
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"pic": "pointer.png"
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}
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]
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}
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```
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Pointer image `"pic": "pointer.png"`:
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The following graphic is rendered for a sensor value of `47.7`:
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<img src="img/sensor_mode4.png" alt="sensor mode 4 example">
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## Known Issues
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Pointer sensor rendering has been reverse engineered from the AOOSTAR-X app. Not all options are supported.
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- Work in progress, not yet fully tested
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