BABAR C++ Course Running the Examples - HEPHY

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Where’s the implementation?ImplementationWhere will we find distanceAlongRay?Circle• it’s not in Surface• one implementation in Plane• but we really instansiate objects of type Circle orRectangle• another in CylinderSurfacePlaneRectangleCylinderAntiCylinderIn Plane, we havedouble Plane::distanceAlongRay( int which_way,const Ray* ry, ThreeVec& p ) const{double dist = FLT_MAX;ThreeVec lv ( FLT_MAX, FLT_MAX, FLT_MAX );p = lv;// Origin and direction unit vector of Ray.ThreeVec x = ry->position();ThreeVec dhat = ry->direction( 0.0 );// Normal unit vector to Plane.ThreeVec nhat = normal();double denom = nhat * dhat;if ( ( denom * which_way ) = 0.0 ) && ( d < FLT_MAX ) ) {dist = d;p = ry->position( d );if ( withinBoundary( p ) == 0 ) {dist = FLT_MAX;p = ThreeVec( FLT_MAX, FLT_MAX, FLT_MAX );}}return dist;}• withinBoundary() member function must be inCircle or RectangleBABAR C++ Course 184 Paul F. KunzBABAR C++ Course 185 Paul F. Kunz
As expectedVirtual destructorIn Circle we haveint Circle::withinBoundary( const ThreeVec& x ) const{ThreeVec p = x - origin;if ( p.magnitude()
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BABAR C++ CourseRunning the Example
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C++ Input and OutputMore on I/OIntr
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Declaring types and initializingTyp
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Relational OperatorsLogical operato
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Assignment operatorsOperator Preced
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Coding Styleswhile loopC/C++ is fre
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do-while Examplefor loopSnippet fro
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ArraysExample Code and a TestA coll
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Plan of the dayFunctionsFunctionsPo
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Header files used with definitionHe
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Functions in CHeader FilesFunction
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Pointers and ArraysPointer Arithmet
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Progression towards C++ styleExampl
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Line fit continuedCharacter Strings
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Formal ArgumentsReferencesConsider(
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More on declarationsconst PointerWe
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Inline FunctionsSummarySometimes, t
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ThreeVectorUsing a class objectCLHE
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Use of private keywordInitializing
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Access member functionsInline acces
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C++ designHomeworkC++ style• effi
Page 43 and 44: Member InitializersFunction Return
Page 45 and 46: Operator Function ImplementationCom
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Page 49 and 50: SummaryLevels of Abstraction in Phy
Page 51 and 52: Plan of the daySimpleFloatArray Cla
Page 53 and 54: Constructor Implementationscopy Imp
Page 55 and 56: operator= Member FunctionAssignment
Page 57 and 58: Key pointsClass explosion?• shoul
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Page 63 and 64: IteratorsIterators++CompareSimpleAr
Page 65 and 66: Standard Template Library (STL)Feat
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Page 87 and 88: Gismo HistorySome Gismo ClassesVers
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Page 91 and 92: Gismo VolumePart of implementationP
Page 93: Back to implementationFollowing the
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BABAR C++ Course Running the Examples - HEPHY

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