# HTouchManager

## Functions

| `HTouchManager`
| `~HTouchManager`
HTouchInfo * | `AddTouch`
void | `ClearTouchActivity`
void | `ClearTouches`
bool | `RemoveTouch`
int | `GetActiveTouchCount`
int | `GetTouchCount`
int | `GetTouches`
HTouchInfo * | `GetTouch`

## Detailed Description

class `HTouchManager`

  The HTouchManager class stores and manages touch input.

  HTouchManager manages touch input usually coming from a multi-touch enabled device.

  Public Functions

  `HTouchManager`()

    Constructs an HTouchManager object.

  `~HTouchManager`()

    Destructor for HTouchManager

  HTouchInfo *`AddTouch`(float x, float y, float timestamp, int taps, unsigned long ident)

    This method creates a HTouchInfo object and adds this object to the currently list of touch objects

    Parameters: | x – The X coordinate of the touch event, in window space. y – The Y coordinate of the touch event, in window space. timestamp – The time when the touch has occured taps – Number of “taps” (one or more consecutive touches interpreted as one touch) ident – Unique identifier
    Returns: | A new or preexisting TouchInfo object constructed from the provided input

  void `ClearTouchActivity`()

    Clears the activity flag on all touches. Depending on the platform touches might be marked as “active” if they are referenced as part of a touch event. As an example a touch sequnce might start and end with 3 simultaneous touches but might consist of only one or two touches in between.

  void `ClearTouches`()
  bool `RemoveTouch`(unsigned long ident)

    This method removes a touch object from the current list of touches.

    Parameters: | ident – Unique identifier of touch
    Returns: | True if touch was found

  inline int `GetActiveTouchCount`()

    Returns: | Numher of active touches.

  int `GetTouchCount`()

    Returns: | Numher of total touches.

  int `GetTouches`(HTouchInfo *touches[], int maxtouches, bool activeOnly = false)

    This method retrieves an array of touches

    Parameters: | touches – Array of pointers to HTouchInfo Objects. Returned to caller. Passed by reference always. maxtouches – Maximum number of touches returned in “touches” activeOnly – Only return active touches
    Returns: | Number of touches

  HTouchInfo *`GetTouch`(int index, bool activeOnly = false)

    This method retrieves a single touch object

    Parameters: | index – Zero based index less than GetTouchCount() or GetActiveTouchCount() activeOnly – Only return active touches
    Returns: | HTouchInfo or NULL

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