HOpCreateRectangle

Functions

HOpCreateRectangle

~HOpCreateRectangle

char const *

GetName

HBaseOperator *

Clone

int

OnLButtonUp

Detailed Description

class HOpCreateRectangle : public HOpConstructRectangle

The HOpCreateRectangle class draws a rectangle.

HOpCreateRectangle uses event information to insert a rectangle into the HOOPS Database. This provides the basic functionality for drawing a temporary, overlayed 2-D box outline in the view plane based on first and last pointer positions. The operation consists of the following steps:

  1. Left Button Down: Registers the first point of the rectangle.

  2. Left Button Down and Drag: Rubberbands the rectangle to the desired dimensions.

  3. Left Button Up: The rectangle finalized and the polyline primitive used to represent the rectangle is flushed from the scene and a new rectangle is inserted into the model.

More Detailed Description: see event methods.

Public Functions

HOpCreateRectangle(HBaseView *view, int DoRepeat = 0, int DoCapture = 1, bool UseCenterMarker = true)

Constructs an HOpCreateRectangle 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.

  • UseCenterMarker – Pass true if you want HOOPS to render a mark at the center of the rectangle.

virtual ~HOpCreateRectangle()
virtual char const *GetName()
Returns

A pointer to a character string denoting the name of the operator, which is ‘HOpCreateRectangle’.

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 HOpCreateRectangle object.

virtual int OnLButtonUp(HEventInfo &hevent)

OnLButtonUp finalizes the size of the rectangle, cleans up the scene and inserts a new rectangle into the model.

Parameters

hevent – An HEventInfo object containing information about the current event.

Returns

An HOperatorReturn indicating the status of the event.