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# DataExchange
TKIGES
IGESDraw

# IGESDraw_PerspectiveView Class Reference

defines IGESPerspectiveView, Type <410> Form <1>
in package IGESDraw

`#include <IGESDraw_PerspectiveView.hxx>`

Inheritance diagram for IGESDraw_PerspectiveView:

[legend]

## Public Member Functions
Standard_EXPORT | IGESDraw_PerspectiveView ()
Standard_EXPORT void | Init (const Standard_Integer aViewNumber, const Standard_Real aScaleFactor, const gp_XYZ &aViewNormalVector, const gp_XYZ &aViewReferencePoint, const gp_XYZ &aCenterOfProjection, const gp_XYZ &aViewUpVector, const Standard_Real aViewPlaneDistance, const gp_XY &aTopLeft, const gp_XY &aBottomRight, const Standard_Integer aDepthClip, const Standard_Real aBackPlaneDistance, const Standard_Real aFrontPlaneDistance)
| This method is used to set the fields of the class PerspectiveView - aViewNumber : The desired view - aScaleFactor : Scale factor - aViewNormalVector : View plane normal vector (model space) - aViewReferencePoint : View reference point (model space) - aCenterOfProjection : Center Of Projection (model space) - aViewUpVector : View up vector (model space) - aViewPlaneDistance : View plane distance (model space) - aTopLeft : Top-left point of clipping window - aBottomRight : Bottom-right point of clipping window - aDepthClip : Depth clipping indicator - aBackPlaneDistance : Distance of back clipping plane - aFrontPlaneDistance : Distance of front clipping plane .
Standard_EXPORT Standard_Boolean | IsSingle () const
| Returns True (for a single view) .
Standard_EXPORT Standard_Integer | NbViews () const
| Returns 1 (single view) .
Standard_EXPORT Handle_IGESData_ViewKindEntity | ViewItem (const Standard_Integer num) const
| For a single view, returns <me> whatever <num> .
Standard_EXPORT Standard_Integer | ViewNumber () const
| returns the view number associated with <me>
Standard_EXPORT Standard_Real | ScaleFactor () const
| returns the scale factor associated with <me>
Standard_EXPORT gp_Vec | ViewNormalVector () const
| returns the View plane normal vector (model space)
Standard_EXPORT gp_Pnt | ViewReferencePoint () const
| returns the View reference point (model space)
Standard_EXPORT gp_Pnt | CenterOfProjection () const
| returns the Center Of Projection (model space)
Standard_EXPORT gp_Vec | ViewUpVector () const
| returns the View up vector (model space)
Standard_EXPORT Standard_Real | ViewPlaneDistance () const
| returns the View plane distance (model space)
Standard_EXPORT gp_Pnt2d | TopLeft () const
| returns the top left point of the clipping window
Standard_EXPORT gp_Pnt2d | BottomRight () const
| returns the bottom right point of the clipping window
Standard_EXPORT Standard_Integer | DepthClip () const
| returns the Depth clipping indicator 0 = No depth clipping 1 = Back clipping plane ON 2 = Front clipping plane ON 3 = Back and front clipping planes ON
Standard_EXPORT Standard_Real | BackPlaneDistance () const
| returns the View coordinate denoting the location of the back clipping plane
Standard_EXPORT Standard_Real | FrontPlaneDistance () const
| returns the View coordinate denoting the location of the front clipping plane
Standard_EXPORT Handle_IGESData_TransfEntity | ViewMatrix () const
| returns the Transformation Matrix
Standard_EXPORT gp_XYZ | ModelToView (const gp_XYZ &coords) const
| returns XYX from the Model space to the View space by applying the View Matrix
Standard_EXPORT const | Handle (Standard_Type)&DynamicType() const
## Private Attributes
Standard_Integer | theViewNumber
Standard_Real | theScaleFactor
gp_XYZ | theViewNormalVector
gp_XYZ | theViewReferencePoint
gp_XYZ | theCenterOfProjection
gp_XYZ | theViewUpVector
Standard_Real | theViewPlaneDistance
gp_XY | theTopLeft
gp_XY | theBottomRight
Standard_Integer | theDepthClip
Standard_Real | theBackPlaneDistance
Standard_Real | theFrontPlaneDistance

## Constructor & Destructor Documentation

Standard_EXPORT IGESDraw_PerspectiveView::IGESDraw_PerspectiveView | ( |  | ) |

## Member Function Documentation

Standard_EXPORT Standard_Real IGESDraw_PerspectiveView::BackPlaneDistance | ( |  | ) | const

Standard_EXPORT gp_Pnt2d IGESDraw_PerspectiveView::BottomRight | ( |  | ) | const

Standard_EXPORT gp_Pnt IGESDraw_PerspectiveView::CenterOfProjection | ( |  | ) | const

Standard_EXPORT Standard_Integer IGESDraw_PerspectiveView::DepthClip | ( |  | ) | const

Standard_EXPORT Standard_Real IGESDraw_PerspectiveView::FrontPlaneDistance | ( |  | ) | const

Standard_EXPORT const IGESDraw_PerspectiveView::Handle | ( | Standard_Type |  | ) | const

| Reimplemented from IGESData_ViewKindEntity.

Standard_EXPORT void IGESDraw_PerspectiveView::Init | ( | const Standard_Integer | aViewNumber,
|  | const Standard_Real | aScaleFactor,
|  | const gp_XYZ & | aViewNormalVector,
|  | const gp_XYZ & | aViewReferencePoint,
|  | const gp_XYZ & | aCenterOfProjection,
|  | const gp_XYZ & | aViewUpVector,
|  | const Standard_Real | aViewPlaneDistance,
|  | const gp_XY & | aTopLeft,
|  | const gp_XY & | aBottomRight,
|  | const Standard_Integer | aDepthClip,
|  | const Standard_Real | aBackPlaneDistance,
|  | const Standard_Real | aFrontPlaneDistance
| ) |

Standard_EXPORT Standard_Boolean IGESDraw_PerspectiveView::IsSingle | ( |  | ) | const`[virtual]`

| Implements IGESData_ViewKindEntity.

Standard_EXPORT gp_XYZ IGESDraw_PerspectiveView::ModelToView | ( | const gp_XYZ & | coords | ) | const

Standard_EXPORT Standard_Integer IGESDraw_PerspectiveView::NbViews | ( |  | ) | const`[virtual]`

| Implements IGESData_ViewKindEntity.

Standard_EXPORT Standard_Real IGESDraw_PerspectiveView::ScaleFactor | ( |  | ) | const

Standard_EXPORT gp_Pnt2d IGESDraw_PerspectiveView::TopLeft | ( |  | ) | const

Standard_EXPORT Handle_IGESData_ViewKindEntity IGESDraw_PerspectiveView::ViewItem | ( | const Standard_Integer | num | ) | const`[virtual]`

| Implements IGESData_ViewKindEntity.

Standard_EXPORT Handle_IGESData_TransfEntity IGESDraw_PerspectiveView::ViewMatrix | ( |  | ) | const

Standard_EXPORT gp_Vec IGESDraw_PerspectiveView::ViewNormalVector | ( |  | ) | const

Standard_EXPORT Standard_Integer IGESDraw_PerspectiveView::ViewNumber | ( |  | ) | const

Standard_EXPORT Standard_Real IGESDraw_PerspectiveView::ViewPlaneDistance | ( |  | ) | const

Standard_EXPORT gp_Pnt IGESDraw_PerspectiveView::ViewReferencePoint | ( |  | ) | const

Standard_EXPORT gp_Vec IGESDraw_PerspectiveView::ViewUpVector | ( |  | ) | const

## Field Documentation

Standard_Real IGESDraw_PerspectiveView::theBackPlaneDistance`[private]`

gp_XY IGESDraw_PerspectiveView::theBottomRight`[private]`

gp_XYZ IGESDraw_PerspectiveView::theCenterOfProjection`[private]`

Standard_Integer IGESDraw_PerspectiveView::theDepthClip`[private]`

Standard_Real IGESDraw_PerspectiveView::theFrontPlaneDistance`[private]`

Standard_Real IGESDraw_PerspectiveView::theScaleFactor`[private]`

gp_XY IGESDraw_PerspectiveView::theTopLeft`[private]`

gp_XYZ IGESDraw_PerspectiveView::theViewNormalVector`[private]`

Standard_Integer IGESDraw_PerspectiveView::theViewNumber`[private]`

Standard_Real IGESDraw_PerspectiveView::theViewPlaneDistance`[private]`

gp_XYZ IGESDraw_PerspectiveView::theViewReferencePoint`[private]`

gp_XYZ IGESDraw_PerspectiveView::theViewUpVector`[private]`

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

- IGESDraw_PerspectiveView.hxx