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# Input Device Calibration File
# Touch Area
touch.touchArea.calibration = pressure
# Tool Area
# Raw width field measures approx. 0.5 units per millimeter
# of tool area on the surface where a raw width of 15 corresponds
# to about 18mm of physical size. Given that the display resolution
# is 9.6px per mm we obtain a scale factor of 4.8 pixels / unit and
# a bias of 100.8 pixels. Each contact point is measured independently
# so the raw width is not a sum.
touch.toolArea.calibration = linear
touch.toolArea.linearScale = 4.8
touch.toolArea.linearBias = 100.8
touch.toolArea.isSummed = 0
# Pressure
# Driver reports signal strength as pressure.
# A normal thumb touch while touching the back of the device
# typically registers about 40 signal strength units although
# this value is highly variable and is sensitive to contact area,
# manner of contact and environmental conditions. We set the
# scale so that a normal touch with good signal strength will be
# reported as having a pressure somewhere in the vicinity of 1.0,
# a featherlight touch will be below 1.0 and a heavy or large touch
# will be above 1.0. We don't expect these values to be accurate.
touch.pressure.calibration = amplitude
touch.pressure.source = default
touch.pressure.scale = 0.025
# Size
touch.size.calibration = normalized
# Orientation
touch.orientation.calibration = none
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