omni::proj::Frustum Class Reference

Frustum helper struct constructed from a projector. More...

#include <Frustum.h>

Collaboration diagram for omni::proj::Frustum:

Public Member Functions
	Frustum (Projector const &)
	Frustum must be constructed from a projector. More...
QVector3D	eye () const
	Eye position of frustum. More...
QVector3D	topLeft () const
	Vector of top left corner. More...
QVector3D	topLeft (QMatrix4x4 const &) const
	Vector of top left corner, transformed by matrix. More...
QVector3D	topRight () const
	Vector of top right corner. More...
QVector3D	topRight (QMatrix4x4 const &) const
	Vector of top right corner, transformed by matrix. More...
QVector3D	bottomLeft () const
	Vector of bottom left corner. More...
QVector3D	bottomLeft (QMatrix4x4 const &) const
	Vector of bottom left corner, transformed by matrix. More...
QVector3D	bottomRight () const
	Vector of bottom right corner. More...
QVector3D	bottomRight (QMatrix4x4 const &) const
	Vector of bottom right corner, transformed by matrix. More...
QRectF	rect () const
	Return frustum rectangle. More...
QRectF	rect (float _near, float _far) const
	Return frustum rectangle, multiplied by near and far values. More...

Private Attributes
Projector const &	proj_

Detailed Description

Frustum helper struct constructed from a projector.

Constructor & Destructor Documentation

omni::proj::Frustum::Frustum

(

Projector const &

_proj

)

Frustum must be constructed from a projector.

: proj_(_proj) {}

Member Function Documentation

QVector3D omni::proj::Frustum::bottomLeft

(

)

const

Vector of bottom left corner.

                                            {
            return QVector3D(1.0, rect().left(), rect().bottom());
        }

QVector3D omni::proj::Frustum::bottomLeft

(

QMatrix4x4 const &

_m

)

const

Vector of bottom left corner, transformed by matrix.

                                                                {
            return _m * bottomLeft() - _m.column(3).toVector3D();
        }

QVector3D omni::proj::Frustum::bottomRight

(

)

const

Vector of bottom right corner.

                                             {
            return QVector3D(1.0, rect().right(), rect().bottom());
        }

QVector3D omni::proj::Frustum::bottomRight

(

QMatrix4x4 const &

_m

)

const

Vector of bottom right corner, transformed by matrix.

                                                                 {
            return _m * bottomRight() - _m.column(3).toVector3D();
        }

QVector3D omni::proj::Frustum::eye

(

)

const

Eye position of frustum.

                                     {
            return proj_.pos();
        }

QRectF omni::proj::Frustum::rect

(

)

const

Return frustum rectangle.

                                   {
            qreal _a      = proj_.fov().radians() * 0.5;
            qreal _width  = tan(_a);
            qreal _height = _width / proj_.aspectRatio();

            return QRectF(
                QPointF(-_width, _height * (proj_.keystone() + 1.0)),
                QPointF(_width,  _height * (proj_.keystone() - 1.0)));
        }

QRectF omni::proj::Frustum::rect	(	float	_near,
		float	_far
	)		const

Return frustum rectangle, multiplied by near and far values.

                                                          {
            QRectF _rect = rect();
            return QRectF(_rect.topLeft() * _near,_rect.bottomRight() * _near);
        }

QVector3D omni::proj::Frustum::topLeft

(

)

const

Vector of top left corner.

                                         {
            return QVector3D(1.0, rect().left(), rect().top());
        }

QVector3D omni::proj::Frustum::topLeft

(

QMatrix4x4 const &

_m

)

const

Vector of top left corner, transformed by matrix.

                                                             {
            return _m * topLeft() - _m.column(3).toVector3D();
        }

QVector3D omni::proj::Frustum::topRight

(

)

const

Vector of top right corner.

                                          {
            return QVector3D(1.0, rect().right(), rect().top());
        }

QVector3D omni::proj::Frustum::topRight

(

QMatrix4x4 const &

_m

)

const

Vector of top right corner, transformed by matrix.

                                                              {
            return _m * topRight() - _m.column(3).toVector3D();
        }

Field Documentation

Projector const& omni::proj::Frustum::proj_

private

---

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

• include/omni/proj/Frustum.h
• src/lib/proj/Frustum.cpp