# HOpCreateSphere

## Functions

| `HOpCreateSphere`
| `~HOpCreateSphere`
const char * | `GetName`
int | `OnLButtonUp`
HBaseOperator * | `Clone`

## Detailed Description

class HOpCreateSphere : public HOpConstructSphere

  The HOpCreateSphere class provides support for constructing a sphere and inserting it into the model.

  HOpCreateSphere uses event information to draw a sphere. This class provides the basic functionality for drawing a three-dimensional, tesselated sphere. The operation consists of the following steps:

  1. Left Button Down: Registers the center point of the sphere.

  2. Left Button Down and Drag: Rubberbands the sphere to the desired circumference.

  3. Left Button Up: Circumference is finalized, clears the scene and inserts a sphere into the HOOPS data base. The operation ends.

  More Detailed Description: see event methods.

  Public Functions

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

    Constructs an HOpCreateSphere 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 ~HOpCreateSphere()
  virtual const char *GetName()
    Returns

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

  virtual int OnLButtonUp(HEventInfo &hevent)

    OnLButtonUp finalizes the size of the sphere and inserts that sphere into the HOOPS database as a shell. Note that most of the work in this function is done by a call to the public function HUtilityGeometryCreation::CreateSphere.

    Parameters

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

    Returns

      An HOperatorReturn indicating the status of the event.

  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 HOpCreateSphere object.