TGLUtil.h File Reference

#include "Rtypes.h"
#include "TError.h"
#include <vector>
#include <cmath>
#include <cassert>

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Classes
class	TGLVertex3
	3 component (x/y/z) vertex class. More...
class	TGLVector3
	3 component (x/y/z) vector class. More...
class	TGLLine3
	3D space, fixed length, line class, with direction / length 'vector', passing through point 'vertex'. More...
class	TGLRect
	Viewport (pixel base) 2D rectangle class. More...
class	TGLPlane
	3D plane class - of format Ax + By + Cz + D = 0 More...
class	TGLMatrix
	16 component (4x4) transform matrix - column MAJOR as per GL. More...
class	TGLColor
	Class encapsulating color information in preferred GL format - an array of four unsigned bytes. More...
class	TGLColorSet
	Class encapsulating a set of colors used throughout standard rendering. More...
class	TGLUtil
	Wrapper class for various misc static functions - error checking, draw helpers etc. More...
class	TGLUtil::TColorLocker
class	TGLUtil::TDrawQualityModifier
class	TGLUtil::TDrawQualityScaler
class	TGLCapabilitySwitch
class	TGLCapabilityEnabler
class	TGLFloatHolder
class	TGLEnableGuard
class	TGLDisableGuard
class	TGLSelectionBuffer
class	TGL2DArray< T >
class	Rgl::TGuardBase
class	Rgl::TOneArgGuard< Func, Arg >
class	Rgl::TTwoArgsGuard< Func, Arg1, Arg2 >
class	TGLLevelPalette

Namespaces
	Rgl

Typedefs
typedef std::vector< TGLPlane >	TGLPlaneSet_t
typedef std::vector< TGLPlane >::iterator	TGLPlaneSet_i
typedef std::vector< TGLPlane >::const_iterator	TGLPlaneSet_ci
typedef std::pair< Int_t, Int_t >	Rgl::BinRange_t
typedef std::pair< Double_t, Double_t >	Rgl::Range_t

Enumerations
enum	Rgl::EOverlap { Rgl::kInside = 0, Rgl::kPartial, Rgl::kOutside }
enum	EGLCoordType { kGLCartesian, kGLPolar, kGLCylindrical, kGLSpherical }
enum	EGLPlotType {   kGLLegoPlot, kGLSurfacePlot, kGLBoxPlot, kGLTF3Plot,   kGLStackPlot, kGLParametricPlot, kGLIsoPlot, kGL5D,   kGLTH3Composition, kGLVoxel, kGLDefaultPlot }

Functions
TGLVertex3	operator* (Double_t f, const TGLVertex3 &v)
Double_t	Dot (const TGLVector3 &v1, const TGLVector3 &v2)
TGLVector3	Cross (const TGLVector3 &v1, const TGLVector3 &v2)
const TGLVector3	operator/ (const TGLVector3 &vec, Double_t val)
const TGLVector3	operator* (const TGLVector3 &vec, Double_t val)
TGLVertex3	operator+ (const TGLVertex3 &vertex1, const TGLVector3 &vertex2)
TGLVector3	operator- (const TGLVertex3 &vertex1, const TGLVertex3 &vertex2)
TGLVector3	operator+ (const TGLVector3 &vector1, const TGLVector3 &vector2)
TGLVector3	operator- (const TGLVector3 &vector1, const TGLVector3 &vector2)
Double_t	operator* (const TGLVector3 &a, const TGLVector3 &b)
std::pair< Bool_t, TGLLine3 >	Intersection (const TGLPlane &p1, const TGLPlane &p2)
	Find 3D line interestion of this plane with 'other'. More...
std::pair< Bool_t, TGLVertex3 >	Intersection (const TGLPlane &p1, const TGLPlane &p2, const TGLPlane &p3)
std::pair< Bool_t, TGLVertex3 >	Intersection (const TGLPlane &plane, const TGLLine3 &line, Bool_t extend)
	Find intersection of 3D space 'line' with this plane. More...
TGLMatrix	operator* (const TGLMatrix &lhs, const TGLMatrix &rhs)
void	Rgl::ObjectIDToColor (Int_t objectID, Bool_t highColor)
	Object id encoded as rgb triplet. More...
Int_t	Rgl::ColorToObjectID (const UChar_t *color, Bool_t highColor)
void	Rgl::DrawQuadOutline (const TGLVertex3 &v1, const TGLVertex3 &v2, const TGLVertex3 &v3, const TGLVertex3 &v4)
	Draw quad outline. More...
void	Rgl::DrawQuadFilled (const TGLVertex3 &v0, const TGLVertex3 &v1, const TGLVertex3 &v2, const TGLVertex3 &v3, const TGLVector3 &normal)
	Draw quad face. More...
void	Rgl::DrawQuadFilled (const Double_t *v0, const Double_t *v1, const Double_t *v2, const Double_t *v3, const Double_t *normal)
	Draw quad face. More...
void	Rgl::DrawSmoothFace (const TGLVertex3 &v1, const TGLVertex3 &v2, const TGLVertex3 &v3, const TGLVector3 &norm1, const TGLVector3 &norm2, const TGLVector3 &norm3)
	Draws triangle face, each vertex has its own averaged normal. More...
void	Rgl::DrawBoxFront (Double_t xMin, Double_t xMax, Double_t yMin, Double_t yMax, Double_t zMin, Double_t zMax, Int_t fp)
	Draws lego's bar as a 3d box. More...
void	Rgl::DrawTransparentBox (Double_t xMin, Double_t xMax, Double_t yMin, Double_t yMax, Double_t zMin, Double_t zMax, Int_t fp)
	Draws lego's bar as a 3d box. More...
void	Rgl::DrawBoxFrontTextured (Double_t xMin, Double_t xMax, Double_t yMin, Double_t yMax, Double_t zMin, Double_t zMax, Double_t texMin, Double_t texMax, Int_t fp)
	Draws lego's bar as a 3d box LULULULU. More...
void	Rgl::DrawBoxWithGradientFill (Double_t y1, Double_t y2, Double_t x1, Double_t x2, const Double_t *rgba1, const Double_t *rgba2)
void	Rgl::DrawQuadStripWithRadialGradientFill (unsigned nPoints, const Double_t *inner, const Double_t *innerRGBA, const Double_t *outer, const Double_t *outerRGBA)
	TODO: is it possible to use GLdouble to avoid problems with Double_t/GLdouble if they are not the same type? More...
void	Rgl::DrawTrapezoidTextured (const Double_t ver[][2], Double_t zMin, Double_t zMax, Double_t texMin, Double_t texMax)
	In polar coordinates, box became trapezoid. More...
void	Rgl::DrawTrapezoidTextured (const Double_t ver[][3], Double_t texMin, Double_t texMax)
void	Rgl::DrawTrapezoidTextured2 (const Double_t ver[][2], Double_t zMin, Double_t zMax, Double_t texMin, Double_t texMax)
	In polar coordinates, box became trapezoid. More...
void	Rgl::DrawCylinder (TGLQuadric *quadric, Double_t xMin, Double_t xMax, Double_t yMin, Double_t yMax, Double_t zMin, Double_t zMax)
	Cylinder for lego3. More...
void	Rgl::DrawSphere (TGLQuadric *quadric, Double_t xMin, Double_t xMax, Double_t yMin, Double_t yMax, Double_t zMin, Double_t zMax)
	Cylinder for lego3. More...
void	Rgl::DrawError (Double_t xMin, Double_t xMax, Double_t yMin, Double_t yMax, Double_t zMin, Double_t zMax)
void	Rgl::DrawTrapezoid (const Double_t ver[][2], Double_t zMin, Double_t zMax, Bool_t color=kTRUE)
void	Rgl::DrawTrapezoid (const Double_t ver[][3])
void	Rgl::DrawAxes (Int_t fp, const Int_t *vp, const TGLVertex3 *box, const TGLPlotCoordinates *coord, TAxis *xAxis, TAxis *yAxis, TAxis *zAxis)
	Using front point, find, where to draw axes and which labels to use for them gVirtualX->SelectWindow(gGLManager->GetVirtualXInd(fGLDevice)); gVirtualX->SetDrawMode(TVirtualX::kCopy);//TCanvas by default sets in kInverse. More...
void	Rgl::SetZLevels (TAxis *zAxis, Double_t zMin, Double_t zMax, Double_t zScale, std::vector< Double_t > &zLevels)
void	Rgl::DrawFaceTextured (const TGLVertex3 &v1, const TGLVertex3 &v2, const TGLVertex3 &v3, Double_t t1, Double_t t2, Double_t t3, const TGLVector3 &norm1, const TGLVector3 &norm2, const TGLVector3 &norm3)
	Draw textured triangle. More...
void	Rgl::DrawFaceTextured (const TGLVertex3 &v1, const TGLVertex3 &v2, const TGLVertex3 &v3, Double_t t1, Double_t t2, Double_t t3, Double_t z, const TGLVector3 &normal)
	Draw textured triangle on a plane. More...
void	Rgl::GetColor (Float_t v, Float_t vmin, Float_t vmax, Int_t type, Float_t *rgba)
	This function creates color for parametric surface's vertex, using its 'u' value. More...
template<class Func , class Arg >
TOneArgGuard< Func, Arg >	Rgl::make_guard (Func f, Arg a)
template<class Func , class Arg1 , class Arg2 >
TTwoArgsGuard< Func, Arg1, Arg2 >	Rgl::make_guard (Func f, Arg1 a1, Arg2 a2)

Variables
const Float_t	Rgl::gRedEmission [] = {1.f, 0.f, 0.f, 1.f}
const Float_t	Rgl::gGreenEmission [] = {0.f, 1.f, 0.f, 1.f}
const Float_t	Rgl::gBlueEmission [] = {0.f, 0.f, 1.f, 1.f}
const Float_t	Rgl::gOrangeEmission [] = {1.f, 0.4f, 0.f, 1.f}
const Float_t	Rgl::gWhiteEmission [] = {1.f, 1.f, 1.f, 1.f}
const Float_t	Rgl::gGrayEmission [] = {0.3f,0.3f, 0.3f,1.f}
const Float_t	Rgl::gNullEmission [] = {0.f, 0.f, 0.f, 1.f}

Typedef Documentation

typedef std::vector<TGLPlane>::const_iterator TGLPlaneSet_ci

Definition at line 576 of file TGLUtil.h.

typedef std::vector<TGLPlane>::iterator TGLPlaneSet_i

Definition at line 575 of file TGLUtil.h.

typedef std::vector<TGLPlane> TGLPlaneSet_t

Definition at line 574 of file TGLUtil.h.

Enumeration Type Documentation

enum EGLCoordType

Enumerator
kGLCartesian
kGLPolar
kGLCylindrical
kGLSpherical

Definition at line 45 of file TGLUtil.h.

enum EGLPlotType

Enumerator
kGLLegoPlot
kGLSurfacePlot
kGLBoxPlot
kGLTF3Plot
kGLStackPlot
kGLParametricPlot
kGLIsoPlot
kGL5D
kGLTH3Composition
kGLVoxel
kGLDefaultPlot

Definition at line 53 of file TGLUtil.h.

Function Documentation

TGLVector3 Cross ( const TGLVector3 &  v1, const TGLVector3 &  v2  )

inline

Definition at line 328 of file TGLUtil.h.

Referenced by TGLRotateManip::Angle(), TGLRotateManip::Draw(), TEveShape::FindConvexHull(), Intersection(), TMath::NormCross(), TGLPlane::Set(), TGLMatrix::Set(), TGLMatrix::TGLMatrix(), and TGLBoundingBox::UpdateCache().

Double_t Dot ( const TGLVector3 &  v1, const TGLVector3 &  v2  )

inline

Definition at line 322 of file TGLUtil.h.

Referenced by TGLRotateManip::Angle(), TGLRotateManip::CalculateAngleDelta(), TGLTransManip::HandleMotion(), TGLScaleManip::HandleMotion(), TEveTrackPropagator::HelixIntersectPlane(), Intersection(), RootCsg::mmult_transpose_right(), TGLPlane::NearestOn(), TGLBoundingBox::Overlap(), and TGLCameraOverlay::SetFrustum().

std::pair<Bool_t, TGLLine3> Intersection	(	const TGLPlane &	p1,
		const TGLPlane &	p2
	)

Find 3D line interestion of this plane with 'other'.

Returns a std::pair

first (Bool_t) second (TGLLine3) kTRUE - planes intersect intersection line between planes kFALSE - no intersect (parallel) undefined

Definition at line 544 of file TGLUtil.cxx.

Referenced by TGLRotateManip::CalculateAngleDelta(), TGLRotateManip::CalculateRingLine(), TGLSurfacePainter::DrawSectionXOY(), TGLSurfacePainter::DrawSectionXOZ(), TGLSurfacePainter::DrawSectionYOZ(), TGLCamera::EyePoint(), TGLCamera::Frustum(), TGLCamera::FrustumCenter(), TGLCameraOverlay::RenderPlaneIntersect(), TEveLegoEventHandler::Rotate(), and TGLCamera::ViewportPlaneIntersection().

std::pair<Bool_t, TGLVertex3> Intersection	(	const TGLPlane &	p1,
		const TGLPlane &	p2,
		const TGLPlane &	p3
	)

Definition at line 559 of file TGLUtil.cxx.

std::pair<Bool_t, TGLVertex3> Intersection	(	const TGLPlane &	plane,
		const TGLLine3 &	line,
		Bool_t	extend
	)

Find intersection of 3D space 'line' with this plane.

If 'extend' is kTRUE then line extents can be extended (infinite length) to find intersection. If 'extend' is kFALSE the fixed extents of line is respected.

The return a std::pair

• first (Bool_t) second (TGLVertex3)
• kTRUE - line/plane intersect intersection vertex on plane
• kFALSE - no line/plane intersect undefined

If intersection is not found (first == kFALSE) & 'extend' was kTRUE (infinite line) this implies line and plane are parallel. If 'extend' was kFALSE, then either line parallel or insufficient length.

Definition at line 587 of file TGLUtil.cxx.

TGLVertex3 operator* ( Double_t  f, const TGLVertex3 &  v  )

inline

Definition at line 138 of file TGLUtil.h.

const TGLVector3 operator* ( const TGLVector3 &  vec, Double_t  val  )

inline

Definition at line 342 of file TGLUtil.h.

Double_t operator* ( const TGLVector3 &  a, const TGLVector3 &  b  )

inline

Definition at line 377 of file TGLUtil.h.

TGLMatrix operator* ( const TGLMatrix &  lhs, const TGLMatrix &  rhs  )

inline

Definition at line 708 of file TGLUtil.h.

TGLVertex3 operator+ ( const TGLVertex3 &  vertex1, const TGLVector3 &  vertex2  )

inline

Definition at line 349 of file TGLUtil.h.

TGLVector3 operator+ ( const TGLVector3 &  vector1, const TGLVector3 &  vector2  )

inline

Definition at line 363 of file TGLUtil.h.

TGLVector3 operator- ( const TGLVertex3 &  vertex1, const TGLVertex3 &  vertex2  )

inline

Definition at line 356 of file TGLUtil.h.

TGLVector3 operator- ( const TGLVector3 &  vector1, const TGLVector3 &  vector2  )

inline

Definition at line 370 of file TGLUtil.h.

const TGLVector3 operator/ ( const TGLVector3 &  vec, Double_t  val  )

inline

Definition at line 336 of file TGLUtil.h.