HOpCameraZoomTouch

Functions

	`HOpCameraZoomTouch`
	`~HOpCameraZoomTouch`
char const *	`GetName`
int	`OnTouchesDown`
int	`OnTouchesMove`
int	`OnTouchesUp`
void	`SetLightFollowsCamera`
bool	`GetLightFollowsCamera`
HBaseOperator *	`Clone`

Detailed Description

class HOpCameraZoomTouch : public HBaseOperator 

The HOpCameraZoomTouch class zooms the camera toward a target.

HOpCameraZoomTouch implements three of the touch handlers defined on the base class and maps the event information to HOOPS camera routines based on a two finger pinching motion. This provides the basic functionality for interactively zooming in or out from a model in realtime.

More Detailed Description: see event methods.

Public Functions

HOpCameraZoomTouch(HBaseView *view, int DoRepeat = 0, int DoCapture = 1)

Constructs an HOpCameraZoomTouch object.

Parameters

view – A pointer to an HBaseView object.
DoRepeat – An integer denoting whether this is a repeatable operator. This parameter has been deprecated.
DoCapture – An integer denoting whether the mouse state should be captured, which means that all mouse events should be received after a mousedown, even if it leaves the window. This parameter has been deprecated.

virtual ~HOpCameraZoomTouch()

virtual char const *GetName()

Returns: A pointer to a character string denoting the name of the operator which is ‘HOpCameraZoomTouch’.

virtual int OnTouchesDown(HEventInfo &hevent)

OnTouchesDown records touch positions and calculates the current camera target based on the first touch points.

Parameters: hevent – An HEventInfo object containing information about the current event.
Returns: An HOperatorReturn indicating the status of the event.

virtual int OnTouchesMove(HEventInfo &hevent)

OnTouchesDownAndMove zooms the camera in and out based on a pinching motion of the user.

Parameters: hevent – An HEventInfo object containing information about the current event.
Returns: An HOperatorReturn indicating the status of the event.

virtual int OnTouchesUp(HEventInfo &hevent)

OnLButtonUp updates the scene with current camera and lighting information and cleans up.

Parameters: hevent – An HEventInfo object containing information about the current event.
Returns: An HOperatorReturn indicating the status of the event.

inline void SetLightFollowsCamera(bool follow)

SetLightFollowsCamera sets the lights to follow the camera or to stay in one place during orbit. This has the effect of either lighting the scene during orbit or allowing the camera to move through shadow. The default is off.

Parameters: follow – Pass true to have the light follow the camera.

inline bool GetLightFollowsCamera()

Returns: True if the light follows the camera or false if it doesn’t.

virtual HBaseOperator *Clone()

Creates a new operator which is a copy of the current operator. The user is responsible for deleting the newly created operator.

Returns: A pointer to the newly created HOpCameraZoomTouch object.