GpuHelper Class Reference

#include <gpuhelper.h>

Public Types
enum	ProjectionMode2D { PM_Normalized = 1, PM_Viewport = 2 }

Public Member Functions
void	draw (GLenum mode, uint nofElement)
	draw the nofElement first elements More...
void	draw (GLenum mode, uint start, uint end)
	draw a range of elements More...
void	draw (GLenum mode, const std::vector< uint > *pIndexes)
	draw an indexed subset More...
void	drawUnitCube (void)
void	drawUnitSphere (int level=0)
void	drawVector (const Vector3f &position, const Vector3f &vec, const Color &color, float aspect=50.)
void	drawVectorBox (const Vector3f &position, const Vector3f &vec, const Color &color, float aspect=50.)
void	forceMatrixTarget (GLenum matrixTarget)
	GpuHelper ()
template<typename Scalar , int _Flags>
void	loadMatrix (const Eigen::Matrix< Scalar, 4, 4, _Flags, 4, 4 > &mat, GLenum matrixTarget)
template<typename Scalar , typename Derived >
void	loadMatrix (const Eigen::CwiseNullaryOp< Eigen::internal::scalar_identity_op< Scalar >, Derived > &, GLenum matrixTarget)
template<typename Scalar , int _Flags>
void	multMatrix (const Matrix< Scalar, 4, 4, _Flags, 4, 4 > &mat, GLenum matrixTarget)
void	popMatrix (GLenum matrixTarget)
void	popProjectionMode2D ()
template<typename Scalar , int _Flags>
void	pushMatrix (const Matrix< Scalar, 4, 4, _Flags, 4, 4 > &mat, GLenum matrixTarget)
template<typename Scalar , typename Derived >
void	pushMatrix (const Eigen::CwiseNullaryOp< Eigen::internal::scalar_identity_op< Scalar >, Derived > &, GLenum matrixTarget)
void	pushMatrix (GLenum matrixTarget)
void	pushProjectionMode2D (ProjectionMode2D pm)
void	setMatrixTarget (GLenum matrixTarget)
	~GpuHelper ()

Protected Member Functions
void	update (void)

Protected Attributes
GLuint	mColorBufferId
GLenum	mCurrentMatrixTarget
bool	mInitialized
int	mVpHeight
int	mVpWidth

Detailed Description

Definition at line 21 of file gpuhelper.h.

Member Enumeration Documentation

enum GpuHelper::ProjectionMode2D

Enumerator
PM_Normalized
PM_Viewport

Definition at line 29 of file gpuhelper.h.

Constructor & Destructor Documentation

GpuHelper::GpuHelper

(

)

Definition at line 20 of file gpuhelper.cpp.

GpuHelper::~GpuHelper

(

)

Definition at line 27 of file gpuhelper.cpp.

Member Function Documentation

void GpuHelper::draw ( GLenum  mode, uint  nofElement  )

inline

draw the nofElement first elements

Definition at line 191 of file gpuhelper.h.

void GpuHelper::draw ( GLenum  mode, uint  start, uint  end  )

inline

draw a range of elements

Definition at line 202 of file gpuhelper.h.

void GpuHelper::draw ( GLenum  mode, const std::vector< uint > *  pIndexes  )

inline

draw an indexed subset

Definition at line 197 of file gpuhelper.h.

void GpuHelper::drawUnitCube

(

void

)

Definition at line 98 of file gpuhelper.cpp.

void GpuHelper::drawUnitSphere

(

int

level = 0

)

Definition at line 120 of file gpuhelper.cpp.

void GpuHelper::drawVector	(	const Vector3f &	position,
		const Vector3f &	vec,
		const Color &	color,
		float	aspect = 50.
	)

Definition at line 56 of file gpuhelper.cpp.

void GpuHelper::drawVectorBox	(	const Vector3f &	position,
		const Vector3f &	vec,
		const Color &	color,
		float	aspect = 50.
	)

Definition at line 77 of file gpuhelper.cpp.

void GpuHelper::forceMatrixTarget ( GLenum  matrixTarget )

inline

Make the matrix matrixTarget the current OpenGL matrix target. Call this function before loadMatrix() or multMatrix() if you cannot guarantee that glMatrixMode() has never been called after the last loadMatrix() or multMatrix() calls.

Todo:

provides a debug mode checking the sanity of the cached matrix mode.

Definition at line 63 of file gpuhelper.h.

template<typename Scalar , int _Flags>

void GpuHelper::loadMatrix	(	const Eigen::Matrix< Scalar, 4, 4, _Flags, 4, 4 > &	mat,
		GLenum	matrixTarget
	)

Load the matrix mat to the OpenGL matrix matrixTarget. Essentially, this helper function automatically calls glMatrixMode(matrixTarget) if required and does a proper call to the right glLoadMatrix*() or glLoadIdentity() function according to the scalar type and storage order.

Warning

glMatrixMode() must never be called directly. If your're unsure, use forceMatrixMode().

See also

Matrix, multMatrix(), forceMatrixMode()

Definition at line 157 of file gpuhelper.h.

template<typename Scalar , typename Derived>

void GpuHelper::loadMatrix	(	const Eigen::CwiseNullaryOp< Eigen::internal::scalar_identity_op< Scalar >, Derived > &	,
		GLenum	matrixTarget
	)

Definition at line 148 of file gpuhelper.h.

template<typename Scalar , int _Flags>

void GpuHelper::multMatrix	(	const Matrix< Scalar, 4, 4, _Flags, 4, 4 > &	mat,
		GLenum	matrixTarget
	)

Multiply the OpenGL matrix matrixTarget by the matrix mat. Essentially, this helper function automatically calls glMatrixMode(matrixTarget) if required and does a proper call to the right glMultMatrix*() function according to the scalar type and storage order.

Warning

glMatrixMode() must never be called directly. If your're unsure, use forceMatrixMode().

See also

Matrix, loadMatrix(), forceMatrixMode()

Definition at line 141 of file gpuhelper.h.

void GpuHelper::popMatrix ( GLenum  matrixTarget )

inline

Pop the OpenGL matrix matrixTarget

Definition at line 185 of file gpuhelper.h.

void GpuHelper::popProjectionMode2D

(

void

)

Definition at line 50 of file gpuhelper.cpp.

template<typename Scalar , int _Flags>

void GpuHelper::pushMatrix ( const Matrix< Scalar, 4, 4, _Flags, 4, 4 > &  mat, GLenum  matrixTarget  )

inline

Push the OpenGL matrix matrixTarget and load mat.

Definition at line 170 of file gpuhelper.h.

template<typename Scalar , typename Derived>

void GpuHelper::pushMatrix	(	const Eigen::CwiseNullaryOp< Eigen::internal::scalar_identity_op< Scalar >, Derived > &	,
		GLenum	matrixTarget
	)

Definition at line 177 of file gpuhelper.h.

void GpuHelper::pushMatrix ( GLenum  matrixTarget )

inline

Push and clone the OpenGL matrix matrixTarget

Definition at line 163 of file gpuhelper.h.

void GpuHelper::pushProjectionMode2D

(

ProjectionMode2D

pm

)

Definition at line 31 of file gpuhelper.cpp.

void GpuHelper::setMatrixTarget ( GLenum  matrixTarget )

inline

Definition at line 134 of file gpuhelper.h.

void GpuHelper::update ( void  )

protected

Member Data Documentation

GLuint GpuHelper::mColorBufferId

protected

Definition at line 103 of file gpuhelper.h.

GLenum GpuHelper::mCurrentMatrixTarget

protected

Definition at line 105 of file gpuhelper.h.

bool GpuHelper::mInitialized

protected

Definition at line 106 of file gpuhelper.h.

int GpuHelper::mVpHeight

protected

Definition at line 104 of file gpuhelper.h.

int GpuHelper::mVpWidth

protected

Definition at line 104 of file gpuhelper.h.

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

• gpuhelper.h
• gpuhelper.cpp