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HOpCreatePolyline Class Reference

The HOpCreatePolyline class draws a polyline. More...

#include <HOpCreatePolyline.h>

Inheritance diagram for HOpCreatePolyline:

HOpConstructPolyline HBaseOperator

List of all members.

Public Member Functions

virtual HBaseOperatorClone ()
virtual const char * GetName ()
 HOpCreatePolyline (HBaseView *view, int DoRepeat=0, int DoCapture=1)
virtual int OnLButtonDblClk (HEventInfo &hevent)


Detailed Description

The HOpCreatePolyline class draws a polyline.

HOpCreatePolyline maps event information to the HOOPS routine HC_Insert_Polyline. This provides the basic functionality for dynamically creating a temporary overlayed polyline in the view plane based on pointer input. The polyline points are stored in a protected member array until a double click event is passed, then the array is inserted into the HOOPS database. The operation consists of the following steps:

  1. Left Button Down: The operation is initiated and the first point of the polyline is recorded.
  2. No Button Down and Drag: Rubberband line segment to the desired position of the next point.
  3. Left Button Down: The next point in polyline is recorded and continues until the user double clicks the left mouse button.
  4. Left Button Double Click: The polyline is finalized and the polyline primitive is flushed from the scene and a new one is inserted into the model.
More Detailed Description: see event methods.

Constructor & Destructor Documentation

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

Constructs an HOpCreatePolyline 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.


Member Function Documentation

virtual HBaseOperator* HOpCreatePolyline::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 HOpCreatePolyline object.

Reimplemented from HOpConstructPolyline.

virtual const char* HOpCreatePolyline::GetName (  )  [virtual]

Returns:
A pointer to a character string denoting the name of the operator which is 'Create Polyline'.

Reimplemented from HOpConstructPolyline.

virtual int HOpCreatePolyline::OnLButtonDblClk ( HEventInfo hevent  )  [virtual]

OnLButtonDblClk places the final mouse position into the temp array, then inserts the array into the database as a HOOPS polyline. This function also takes care of any cleanup.

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

Reimplemented from HOpConstructPolyline.


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