mirror of
https://github.com/OpenTrespasser/JurassicParkTrespasser.git
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305 lines
8.8 KiB
C++
305 lines
8.8 KiB
C++
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/***********************************************************************************************
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*
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* Copyright <EFBFBD> DreamWorks Interactive. 1996
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*
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* Contents:
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* Main include file for transform library.
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* Includes all necessary files.
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*
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* Bugs:
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*
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* To do:
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*
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***********************************************************************************************
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*
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* $Log:: /JP2_PC/Source/Lib/Transform5/Transform.hpp $
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*
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* 11 97-04-24 18:40 Speter
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* Folded new changes from 4.2 version into this 5.0 specific version.
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*
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* 9 96/12/04 20:20 Speter
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* Added include of "Presence.hpp".
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*
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* 8 96/09/25 19:50 Speter
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* The Big Change.
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* In transforms, replaced TReal with TR, TDefReal with TReal.
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* Replaced all references to transform templates that have <TObjReal> with <>.
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* Replaced TObjReal with TReal, and "or" prefix with "r".
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* Replaced CObjPoint, CObjNormal, and CObjPlacement with equivalent transform types, and
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* prefixes likewise.
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* Removed some unnecessary casts to TReal.
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* Finally, replaced VER_GENERAL_DEBUG_ASSERTS with VER_DEBUG.
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*
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* 7 96/08/21 17:38 Speter
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* Changes from code review:
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* Added default template parameter to all classes.
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* Made all in-class friends inline.
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* Updated comments.
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*
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* 6 96/07/08 12:40 Speter
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* Changed name of CNormal3 to CDir3 (more general).
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* Added specific functions to transform directions, which do not translate positions.
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*
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* 5 96/06/26 22:07 Speter
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* Added a bunch of comments, prettied things up nicely.
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*
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* 4 96/06/26 13:16 Speter
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* Changed TGReal to TR and prefix gr to r.
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*
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* 3 96/06/25 14:36 Speter
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* Finalised design of transform classes, with Position3 and Transform3.
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*
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* 2 96/06/20 17:13 Speter
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* Converted into templates and made necessary changes.
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*
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* 1 96/06/20 15:26 Speter
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* First version of new optimised transform library.
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*
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**********************************************************************************************/
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#ifndef HEADER_LIB_TRANSFORM_TRANSFORM_HPP
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#define HEADER_LIB_TRANSFORM_TRANSFORM_HPP
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//******************************************************************************************
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//
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// This header includes all headers needed for the transform subsystem.
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//
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// This subsystem consists of several classes, each templatised on the basic value parameter
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// (which can be float, fixed, etc.).
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//
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// There are vector classes and transform classes. The vector classes are:
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//
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// CVector2 Basic 2D vector.
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// CDir2 Subclass constrained to hold unit vector.
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// CVector3 Basic 3D vector.
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// CDir3 Subclass constrained to hold unit vector.
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//
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// The transforms are classes which operate on vectors, transforming them into different vectors.
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// Each transform implements the following interface (although there is in general no inheritance
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// relationship between them):
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//
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/*
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//**********************************************************************************************
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//
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template<class TR = TReal> class CExample3
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//
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// Prefix: ex3
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//
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// This is not a class declaration, but merely an example of the minimum interface
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// all transforms implement.
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//
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//**************************************
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{
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public:
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//******************************************************************************************
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//
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// Constructors.
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//
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// The default constructor is an identity transform.
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CExample3();
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// There will be other constructors.
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// ...
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//******************************************************************************************
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//
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// Conversion operators.
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//
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// Supply conversions to more general transforms (see hierarchy below).
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// ...
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//******************************************************************************************
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//
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// Operators.
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//
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// Return the inverse of the transform.
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CExample3<TR> operator ~() const;
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// Concatenate with another transform of same type.
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CExample3<TR> operator *(const CExample3<TR>& tf3);
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CExample3<TR>& operator *=(const CExample3<TR>& t3);
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// Concatenate with other transforms if appropriate.
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// ...
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// Operate on a vector.
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friend CVector3 operator *(const CVector3& v3, const CExample3<TR>& t3);
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friend CVector3& operator *=(CVector3& v3, const CExample3<TR>& t3);
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// Operate on a direction. (Not supported by Scale or Shear.)
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friend CDir3 operator *(const CDir3& d3, const CExample3<TR>& t3);
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friend CDir3& operator *=(CDir3& d3, const CExample3<TR>& t3);
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};
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*/
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//
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// Here is a list of the specific transform classes, along with the conversion and concatenation
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// operators they contain (other than self-concatenation).
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//
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// CTranslate3 Adds a constant translation to a vector.
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//
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// CMatrix3 Performs any non-translating transformation (scale, rotate, shear).
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//
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// CTransform3 General linear 3D transform: any rotation, scale, shear,
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// translation, etc.
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// Contains a CMatrix3 plus CVector3 translation.
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// CTransform3(CMatrix3)
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// CTransform3(CTranslate3)
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//
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// CTransform3 = CTransform3 * CMatrix3
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// CTransform3 *= CMatrix3
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// CTransform3 = CMatrix3 * CTransform3
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//
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// CTransform3 = CTransform3 * CTranslate3
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// CTransform3 *= CTranslate3
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// CTransform3 = CTranslate3 * CTransform3
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//
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// CTransform3 = CMatrix3 * CTranslate3
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// CTransform3 = CTranslate3 * CMatrix3
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//
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// CScale3 Scales by different values in x, y, and z.
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// operator CMatrix3()
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// CMatrix3 = CScale3 * CMatrix3
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// CMatrix3 = CMatrix3 * CScale3
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// CMatrix3 *= CScale3
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//
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// CTransform3 = CScale3 * CTransform3
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// CTransform3 = CTransform3 * CScale3
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// CTransform3 *= CScale3
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//
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// CTransform3 = CScale3 * CTranslate3
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// CTransform3 = CTranslate3 * CScale3
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//
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// CScaleI3 Scales by a constant amount.
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// operator CMatrix3()
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// CMatrix3 = CScaleI3 * CMatrix3
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// CMatrix3 = CMatrix3 * CScaleI3
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// CMatrix3 *= CScaleI3
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//
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// CTransform3 = CScaleI3 * CTransform3
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// CTransform3 = CTransform3 * CScaleI3
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// CTransform3 *= CScaleI3
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//
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// CTransform3 = CScaleI3 * CTranslate3
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// CTransform3 = CTranslate3 * CScaleI3
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//
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// operator CScale3()
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// CScale3 = CScaleI3 * CScale3
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// CScale3 = CScale3 * CScaleI3
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// CScale3 *= CScaleI3
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//
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// CShear3 Shears any two axes with respect to the third.
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// Implemented as just a #define to CMatrix3, using a special
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// CMatrix3() constructor. This is because shear is used too
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// infrequently to bother making an optimised class.
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//
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// CRotate3 Performs a rotation.
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// Implemented as a quaternion.
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// operator CMatrix3()
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// CMatrix3 = CRotate3 * CMatrix3
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// CMatrix3 = CMatrix3 * CRotate3
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// CMatrix3 *= CRotate3
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//
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// CPlacement3 Performs any rigid transformation, i.e. rotation and translation.
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// Indicates an objects placement (position and orientation) in a
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// coordinate system. Contains a CRotate3 and CVector3 translation.
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// CPlacement3(CRotate3)
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// CPlacement3(CTranslate3)
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//
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// operator CTransform3();
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//
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// CPlacement3 = CPlacement3 * CRotate3
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// CPlacement3 *= CRotate3
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// CPlacement3 = CRotate3 * CPlacement3
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//
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// CPlacement3 = CPlacement3 * CTranslate3
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// CPlacement3 *= CTranslate3
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// CPlacement3 = CTranslate3 * CPlacement3
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//
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// CPlacement3 = CRotate3 * CTranslate3
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// CPlacement3 = CTranslate3 * CRotate3
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//
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//
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// Include all files necessary for transform subsystem.
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//
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#include "Vector.hpp"
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#include "Translate.hpp"
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#include "Matrix.hpp"
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#include "Rotate.hpp"
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#include "Scale.hpp"
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#include "Presence.hpp"
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#include "Shear.hpp"
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//
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// Declare concatenation operators between different transform types to resolve ambiguities.
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//
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// Compiler bug: these functions should not be needed. Since there is a conversion from
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// CRotate3 to CMatrix3, the compiler is supposed to figure out that an expression like
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// CMatrix3 * CRotate3 should resolve to CMatrix3 * CMatrix3(CRotate3).
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//
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// However, when we are dealing with templates, this fails. (It works for non-templated code.)
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//
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/*
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//
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// CRotate3 with CMatrix3.
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//
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template<class TR> CMatrix3<TR> operator *(const CRotate3<TR>& r3, const CMatrix3<TR>& mx3)
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{
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return (CMatrix3<TR>)r3 * mx3;
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}
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template<class TR> CMatrix3<TR> operator *(const CMatrix3<TR>& mx3, const CRotate3<TR>& r3)
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{
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return mx3 * (CMatrix3<TR>)r3;
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}
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template<class TR> CMatrix3<TR>& operator *=(CMatrix3<TR>& mx3, const CRotate3<TR>& r3)
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{
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return mx3 *= (CMatrix3<TR>)r3;
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}
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//
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// CRotate3 with CScale3.
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//
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template<class TR> CMatrix3<TR> operator *(const CRotate3<TR>& r3, const CScale3<TR>& s3)
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{
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return CMatrix3<TR>(r3) * s3;
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}
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template<class TR> CMatrix3<TR> operator *(const CScale3<TR>& s3, const CRotate3<TR>& r3)
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{
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return s3 * CMatrix3<TR>(r3);
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}
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//
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// CRotate3 with CScaleI3.
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//
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template<class TR> CMatrix3<TR> operator *(const CRotate3<TR>& r3, const CScaleI3<TR>& si3)
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{
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return CMatrix3<TR>(r3) * si3;
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}
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template<class TR> CMatrix3<TR> operator *(const CScaleI3<TR>& si3, const CRotate3<TR>& r3)
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{
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return si3 * CMatrix3<TR>(r3);
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}
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*/
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#endif
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