Gems LDS4, Operation Manual, Page: 41 / 71

35 Gauge Reference
© 2009 General Engine Management Systems Ltd.
the output for this line exceeds this value, the line will be drawn at the maximum value.
6.15 Round Tacho Bitmap Gauge
The round tacho bitmap gauge allows a scaled pointer or needle to be drawn over a bitmap
image of a gauge. This allows much more eye catching graphics to be used for round gauges
than could otherwise be drawn dynamically by the display hardware.
The round tacho bitmap gauge has the following special properties:
· Background bitmap - the background gauge image.
·
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.
·
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.