The HOpConstructCylinder class provides support for constructing a cylinder and inserting it into the model. More...
#include <HOpConstructCylinder.h>
Public Member Functions | |
virtual HBaseOperator * | Clone () |
virtual const char * | GetName () |
HOpConstructCylinder (HBaseView *view, int DoRepeat=0, int DoCapture=1) | |
virtual int | OnLButtonDown (HEventInfo &hevent) |
virtual int | OnLButtonDownAndMove (HEventInfo &hevent) |
virtual int | OnLButtonUp (HEventInfo &hevent) |
virtual int | OnNoButtonDownAndMove (HEventInfo &hevent) |
Protected Member Functions | |
void | ConstructWireframeCylinder (HPoint center, float radius, float height) |
Protected Attributes | |
float | m_height |
float | m_RadiusLength |
HVector | m_WorldRadiusVector |
The HOpConstructCylinder class provides support for constructing a cylinder and inserting it into the model.
HOpConstructCylinder implements four of the mouse button event handlers defined on the base class and maps the event information to local methods that rubberband a cylinder and insert a corresponding HOOPS shell into the HOOPS database. This provides the basic functionality for drawing a temporary three-dimensional, tesselated cylinder with a circular base, a circular cap of equivalent size, and a number of rectangular, facetted sides with the default as 30. The operation consists of the following steps:
More Detailed Description: see event methods.
HOpConstructCylinder::HOpConstructCylinder | ( | HBaseView * | view, |
int | DoRepeat = 0 , |
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int | DoCapture = 1 |
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) |
Constructs an HOpConstructCylinder object.
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 HBaseOperator* HOpConstructCylinder::Clone | ( | ) | [virtual] |
Creates a new operator which is a copy of the current operator. The user is responsible for deleting the newly created operator.
Reimplemented from HBaseOperator.
Reimplemented in HOpCreateCylinder.
void HOpConstructCylinder::ConstructWireframeCylinder | ( | HPoint | center, |
float | radius, | ||
float | height | ||
) | [protected] |
ConstructWireframeCylinder transforms the pointer coordinates from screen to world space and inserts a wireframe cylinder into the scene. This function is repeatedly called internally by OnNoButtonDownAndMove after the base dimensions have been finalized.
center | The center of the circular top and base of the cylinder. |
radius | The radius of the cylinders's base. |
height | The height of the cylinder. |
virtual const char* HOpConstructCylinder::GetName | ( | ) | [virtual] |
Reimplemented from HBaseOperator.
Reimplemented in HOpCreateCylinder.
virtual int HOpConstructCylinder::OnLButtonDown | ( | HEventInfo & | hevent | ) | [virtual] |
OnLButtonDown records the first pointer position and initiates the cylinder-drawing mechanism. The first point is used as the center of the cylinder's circular base. If the drawing mechanism has already been started such as LButtonDown having been called once already, LButtonDown finalizes the height of the cylinder, clears the scene and ends the operation.
hevent | An HEventInfo object containing information about the current event. |
Reimplemented from HBaseOperator.
Reimplemented in HOpCreateCylinder.
virtual int HOpConstructCylinder::OnLButtonDownAndMove | ( | HEventInfo & | hevent | ) | [virtual] |
OnLButtonDownAndMove draws a rubberbanded line along the circumference of a circle centered on the first pointer position. Note that the basic drawing work is done by HUtility::CreateAxisCircle, while OnLButtonDownAndMove computes and keeps track of the radial vector that defines the cylinder's base.
hevent | An HEventInfo object containing information about the current event. |
Reimplemented from HBaseOperator.
virtual int HOpConstructCylinder::OnLButtonUp | ( | HEventInfo & | hevent | ) | [virtual] |
OnLButtonUp finalizes the size of the base, sets the value of m_RadiusLength and m_radius_world_vector, and cleans up. This function is not called after the second call to OnLButtonDown.
hevent | An HEventInfo object containing information about the current event. |
Reimplemented from HBaseOperator.
virtual int HOpConstructCylinder::OnNoButtonDownAndMove | ( | HEventInfo & | hevent | ) | [virtual] |
OnNoButtonDownAndMove draws rubberband lines from the base the cylinder to the cap. Note that the basic work is done by repeated internal calls to HOpConstructCylinder::ConstructWireframeCylinder.
hevent | An HEventInfo object containing information about the current event. |
Reimplemented from HBaseOperator.
float HOpConstructCylinder::m_height [protected] |
The height of the cylinder based on first and last pointer positions.
float HOpConstructCylinder::m_RadiusLength [protected] |
The magnitude of the base radius vector in screen coordinates.
HVector HOpConstructCylinder::m_WorldRadiusVector [protected] |
The base radius vector in world coordinates.