HOpMarkupCircle
Functions
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Detailed Description
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class HOpMarkupCircle : public HOpConstructCircle
The HOpMarkupCircle class inserts a 2D circle into a markup layer. If a layer is already active, then the operator will use that layer. Otherwise, the operator will create a new unnamed layer.
HOpMarkupCircle implements three mouse event methods defined on the base class and maps the event information to operator routines. This operation consists of the following steps:
Left Button Down: Registers the center point of the circle.
Left Button Down and Drag: Creates a circle of appropriate radius in the contruction layer.
Left Button Up: Depending on existence of an active markup layer it either opens the existing or creates a new markup layer and inserts appropraitely sized circle into it.
Public Functions
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HOpMarkupCircle(HBaseView *view, int DoRepeat = 0, int DoCapture = 1)
Constructs an HOpMarkupCircle 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.
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virtual ~HOpMarkupCircle()
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virtual char const *GetName()
- Returns
A pointer to a character string denoting the name of the operator, which is ‘HOpMarkupCircle’.
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virtual int OnLButtonUp(HEventInfo &hevent)
OnLButtonUp maps circle information from HOpConstructCircle into the HOOPS routine HC_Compute_Selection_By_Area. This function also deselects any selected items that are not present in the current selection list.
- Parameters
hevent – An HEventInfo object containing information about the current event.
- Returns
An HOperatorReturn indicating the status of the event.
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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 HOpMarkupCircle object.