HOpCameraZoom Class Reference

The HOpCameraZoom class zooms the camera toward a target. More...

#include <HOpCameraZoom.h>

Public Member Functions

virtual HBaseOperatorClone ()
 
bool GetLightFollowsCamera ()
 
virtual const char * GetName ()
 
 HOpCameraZoom (HBaseView *view, int DoRepeat=0, int DoCapture=1)
 
virtual int OnLButtonDown (HEventInfo &hevent)
 
virtual int OnLButtonDownAndMove (HEventInfo &hevent)
 
virtual int OnLButtonUp (HEventInfo &hevent)
 
void SetLightFollowsCamera (bool follow)
 
- Public Member Functions inherited from HBaseOperator
int Capture ()
 Returns whether we are currently in mouse capture mode. See this class' constructor for a more detailed description of what this means. This method has been deprecated.
 
HPoint const GetFirstPoint ()
 Returns the initial selection point.
 
HPoint const GetNewPoint ()
 Returns the current selection point.
 
HBaseViewGetView ()
 Returns a pointer to the view that this operator is associated with.
 
 HBaseOperator (HBaseView *view, int DoRepeat=0, int DoCapture=1)
 
virtual int OnKeyDown (HEventInfo &hevent)
 
virtual int OnKeyUp (HEventInfo &hevent)
 
virtual int OnLButtonDblClk (HEventInfo &hevent)
 
virtual int OnLRButtonDownAndMove (HEventInfo &hevent)
 
virtual int OnMButtonDblClk (HEventInfo &hevent)
 
virtual int OnMButtonDown (HEventInfo &hevent)
 
virtual int OnMButtonDownAndMove (HEventInfo &hevent)
 
virtual int OnMButtonUp (HEventInfo &hevent)
 
virtual int OnMouseMove (HEventInfo &hevent)
 
virtual int OnMouseWheel (HEventInfo &hevent)
 
virtual int OnNoButtonDownAndMove (HEventInfo &hevent)
 
virtual int OnRButtonDblClk (HEventInfo &hevent)
 
virtual int OnRButtonDown (HEventInfo &hevent)
 
virtual int OnRButtonDownAndMove (HEventInfo &hevent)
 
virtual int OnRButtonUp (HEventInfo &hevent)
 
virtual int OnTimer (HEventInfo &hevent)
 
virtual int OnTouchesDown (HEventInfo &hevent)
 
virtual int OnTouchesMove (HEventInfo &hevent)
 
virtual int OnTouchesUp (HEventInfo &hevent)
 
virtual bool OperatorStarted ()
 Operator has been started if true, and has not been started if false.
 
int Repeat ()
 Returns whether the operation is repeatable. This method has been deprecated.
 
void SetFirstPoint (HPoint const &new_point)
 Sets the initial selection point.
 
void SetMapTouchesToMouseEvents (bool val)
 Touch Events are mapped to mouse events if true, and are not if false.
 
void SetNewPoint (HPoint const &new_point)
 Sets the current selection point.
 
void SetOperatorStarted (bool val)
 Operator has been started if true, and has not been started if false.
 
void SetView (HBaseView *new_view)
 Sets the view that this operator is associated with.
 

Additional Inherited Members

- Protected Member Functions inherited from HBaseOperator
bool IsSpecialKey (HC_KEY key)
 
- Protected Attributes inherited from HBaseOperator
bool m_bMapTouchesToMouseEvents
 Indicates if touch events are mapped to mouse events.
 
bool m_bOpStarted
 Indicates whether the operator has already 'started'. More...
 
int m_doCapture
 Integer indicating whether to capture mouse on button down and release on button up. This parameter has been deprecated.
 
int m_doRepeat
 Integer indicating if the operator is repeatable . This parameter has been deprecated.
 
HPoint m_ptFirst
 Initial selection point.
 
HPoint m_ptNew
 Current selection point.
 
HBaseViewm_pView
 The HOOPS view corresponding to this operator.
 
HCutGeometryVisibility m_TempCutGeometryVisibility
 stores original cut geometry visibility
 
HShadowMode m_TempShadowMode
 stores original shadow mode
 

Detailed Description

The HOpCameraZoom class zooms the camera toward a target.

HOpCameraZoom implements three of the mouse button handlers defined on the base class and maps the event information to HOOPS camera routines. This provides the basic functionality for interactively zooming in or out from a model in realtime. The operation consists of the following steps:

  1. Left Button Down: The zoom is initiated.
  2. Left Button Down and Drag: The camera zooms to the default target.
  3. Left Button Up: The operation ends.

More Detailed Description: see event methods.

Constructor & Destructor Documentation

◆ HOpCameraZoom()

HOpCameraZoom::HOpCameraZoom ( HBaseView view,
int  DoRepeat = 0,
int  DoCapture = 1 
)

Constructs an HOpCameraZoom object.

Parameters
viewA pointer to an HBaseView object.
DoRepeatAn integer denoting whether this is a repeatable operator. This parameter has been deprecated.
DoCaptureAn 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.

Member Function Documentation

◆ Clone()

virtual HBaseOperator* HOpCameraZoom::Clone ( )
virtual

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 HOpCameraZoom object.

Reimplemented from HBaseOperator.

◆ GetLightFollowsCamera()

bool HOpCameraZoom::GetLightFollowsCamera ( )
inline
Returns
True if the light follows the camera or false if it doesn't.

◆ GetName()

virtual const char* HOpCameraZoom::GetName ( )
virtual
Returns
A pointer to a character string denoting the name of the operator which is 'HOpCameraZoom'.

Reimplemented from HBaseOperator.

◆ OnLButtonDown()

virtual int HOpCameraZoom::OnLButtonDown ( HEventInfo hevent)
virtual

OnLButtonDown draws a bounding box around the scene, records the first mouse position, and calculates the current camera target based on the first point.

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

Reimplemented from HBaseOperator.

◆ OnLButtonDownAndMove()

virtual int HOpCameraZoom::OnLButtonDownAndMove ( HEventInfo hevent)
virtual

OnLButtonDownAndMove tests for left button down, records points as the mouse is moved, recalculates the current target for each point, and zooms the camera towards that current target. The method makes calculations to avoid unneccessary zoom when the camera is close to the target. If this operator is set so that the lights follow the camera, lighting targets will also be recalculated and lights reoriented.

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

Reimplemented from HBaseOperator.

◆ OnLButtonUp()

virtual int HOpCameraZoom::OnLButtonUp ( HEventInfo hevent)
virtual

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

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

Reimplemented from HBaseOperator.

◆ SetLightFollowsCamera()

void HOpCameraZoom::SetLightFollowsCamera ( bool  follow)
inline

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
followPass true to have the light follow the camera.

The documentation for this class was generated from the following file: