`gre.mtpinch`

This event uses the value data field, which will be the scale factor of the average spacing from all current touch points compared to the spacing of all the old touch points. The scale factor is calculated by newspacing/oldspacing, so a value of 1.1 indicates a growth of 10% and a value of 0.9 indicates a shrink of 10%

Data

uint32_t button uint32_t timestamp int16_t subtype int16_t x int16_t y int16_t z int16_t id int16_t spare float value float x_move float y_move int16_t npoints

Where:

- value
The scale factor event

- npoints
The number of touch points used to generate this event