textmode.js / input / touch / TouchPosition

Interface: TouchPosition

Touch position expressed both in grid and client coordinates.

The grid coordinate system uses center-based coordinates matching the rendering space:

• (0, 0) is the center cell of the grid
• Negative X values are to the left of center
• Positive X values are to the right of center
• Negative Y values are above center
• Positive Y values are below center

When the touch is outside the grid bounds, x and y are set to Number.NEGATIVE_INFINITY to indicate an invalid/outside position.

Properties

Property	Type	Description
clientX	number	Client X coordinate in CSS pixels
clientY	number	Client Y coordinate in CSS pixels
id	number	Identifier provided by the browser for a touch point
pressure?	number	Touch pressure (0-1) when supported
radiusX?	number	Contact ellipse radius on the X axis in CSS pixels
radiusY?	number	Contact ellipse radius on the Y axis in CSS pixels
rotationAngle?	number	Contact ellipse angle in radians when provided
x	number	Grid X coordinate (column) in center-based coords. Number.NEGATIVE_INFINITY if outside grid.
y	number	Grid Y coordinate (row) in center-based coords. Number.NEGATIVE_INFINITY if outside grid.