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4. Pressure Speed Scaling
This property is used to apply the gain of dynamic speed control to the incoming pressure value. If it is enabled, the gain will be applied after the Pressure Processing section. This can really add some personality and depth to your lines.
The slow gain setting controls the amount of pressure gain applied when your pen does not move at all.
Fast gain setting Controls the amount of pressure gain applied when your pen Speed reaches a certain fixed Speed, which can also be controlled with the Fast Speed setting.
The resulting pressure gain is calculated by linear interpolation between slow gain and fast gain values using your current pen speed. As shown in the figure below, you can set these gain controls so that the lines are thicker for fast drawing and thinner for slow drawing. The reverse effect can also be achieved by setting the slow gain higher than the fast gain. The gain value of 1.0 is neutral and has no effect.
The Speed Smoothing setting is used to smooth the Speed value before calculating the gain. Increasing this value will result in fewer sudden gain changes.
Depending on how often your software polls input data and the resolution of your screen and tablet, you may want to experiment with these Settings to get good results.
The Stroke Average and Stroke Max tabs show the Average and maximum input speed and output gain of your last Stroke. Use these as a guide to fine-tune your Settings to get the desired results.
The graphics button opens a window that displays a graph of the gain function. The graphics are interactive: you can zoom by dragging the mouse/pen and pan by holding down the CTRL key. Slow gain and fast gain loops can be selected and moved. The chart also shows the average and maximum speed of your last stroke.