DRAFT |
SDL_DollarGestureEvent
A structure that contains complex gesture event information.
Contents
Data Fields
Uint32 |
type |
SDL_DOLLARGESTURE or SDL_DOLLARRECORD |
Uint32 |
timestamp |
timestamp of the event |
SDL_TouchID |
touchId |
the touch device id |
SDL_GestureID |
gestureId |
the unique id of the closest gesture to the performed stroke |
Uint32 |
numFingers |
the number of fingers used to draw the stroke |
float |
error |
the difference between the gesture template and the actual performed gesture (lower error is a better match) |
float |
x |
the normalized center of gesture |
float |
y |
the normalized center of gesture |
Code Examples
You can add your code example here
Remarks
SDL_DollarGestureEvent is a member of the SDL_Event union and is used when an event of type SDL_DOLLARGESTURE is reported. You would access it through the event's dgesture field.
x and y are in range 0 to 1.
For SDL_DOLLARRECORD only touchId and gestureId are valid.
For more information see: README-gesture.md
Related Enumerations
