Needle Gauge
Overview
The Needle Gauge allows a scaled pointer or needle to be drawn over a graphic image. This allows much more eye catching graphics to be used for round gauges than could otherwise be drawn dynamically by the display hardware.
Properties
In addition to Standard Gauge Properties , the following properties may be configured:
| Property | Description |
|---|---|
| Type | The type of gauge to be drawn, may be switched between Needle Gauge or Arc Gauge . |
| Background bitmap | The background gauge image. Clicking the Clear button clears the background bitmap. |
| Auto Size | Automatically calculate the length and centre of the needle from the gauge width / height. |
| X Centre, Y Centre | The centre of the gauge from which the logical centre of the pointer will be drawn. |
| Centre Offset | The number of pixels from the logical pointer centre at which the pointer will be drawn. |
| Draw Centre | If checked, a solid circle is drawn at the needle centre. |
| Length | The length of the pointer. |
| Start Degrees | The number of degrees from 6 o’clock (the zero degree position) that the starting value of the gauge should be drawn. |
| End Degrees | The number of degrees from 6 o’clock (the zero degree position) that the end value of the gauge should be drawn. |
| Transparent box | If checked, then any colour in the background bitmap that matches the colour specified in Transparent Colour will not be drawn. This is useful when overlaying a round tacho bitmap gauge over another bitmap. |
Display Support
| Display | Supported? |
|---|---|
| CD34 | Yes |
| LDS4 | Yes |
| CD32 | Yes |
| LDS35 | Yes |
| LDS35_L | Yes |
| CD6-43 | Yes |
| GLW-43 | Yes |