Cyd
2b8ca921cb
Complete disaster-recovery snapshot: engine/game source, game data assets, VC6 toolchain + DX SDKs, build outputs, deployed game, and _UNUSED archive. Large binaries in Git LFS; text preserved byte-for-byte (core.autocrlf=false, no eol attributes). See RECOVERY.md for the one-clone rebuild procedure.
85 lines
2.7 KiB
C++
85 lines
2.7 KiB
C++
//===========================================================================//
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// File: point3d.cc //
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// Project: MUNGA Brick: Math Library //
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// Contents: Implementation details for the point class //
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//---------------------------------------------------------------------------//
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// Date Who Modification //
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// -------- --- ---------------------------------------------------------- //
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// 11/19/94 JMA Initial coding. //
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//---------------------------------------------------------------------------//
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// Copyright (C) 1994-1995, Virtual World Entertainment, Inc. //
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// All Rights reserved worldwide //
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// This unpublished sourcecode is PROPRIETARY and CONFIDENTIAL //
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//===========================================================================//
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#include "StuffHeaders.hpp"
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const Point3D
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Point3D::Identity(0.0f,0.0f,0.0f);
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const Point3D
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Point3D::HellPoint(50.0f,-2000.0f,50.0f);
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//
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//###########################################################################
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//###########################################################################
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//
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Point3D&
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Point3D::operator=(const Vector4D& v)
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{
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Check_Pointer(this);
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Check_Object(&v);
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Verify(!Small_Enough(v.w));
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Scalar scale = 1.0f / v.w;
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x = v.x*scale;
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y = v.y*scale;
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z = v.z*scale;
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return *this;
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}
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//
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//###########################################################################
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//###########################################################################
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//
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Point3D&
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Point3D::Multiply(const Point3D& p,const AffineMatrix4D& m)
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{
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Check_Pointer(this);
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Check_Object(&p);
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Check_Object(&m);
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Verify(this != &p);
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x = p.x*m(0,0) + p.y*m(1,0) + p.z*m(2,0) + m(3,0);
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y = p.x*m(0,1) + p.y*m(1,1) + p.z*m(2,1) + m(3,1);
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z = p.x*m(0,2) + p.y*m(1,2) + p.z*m(2,2) + m(3,2);
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return *this;
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}
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//
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//###########################################################################
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//###########################################################################
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//
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Point3D&
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Point3D::MultiplyByInverse(
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const Point3D &p,
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const LinearMatrix4D &m
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)
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{
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Check_Pointer(this);
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Check_Object(&p);
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Check_Object(&m);
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Verify(this != &p);
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x =
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p.x*m(0,0) + p.y*m(0,1) + p.z*m(0,2)
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- m(3,0)*m(0,0) - m(3,1)*m(0,1) - m(3,2)*m(0,2);
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y =
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p.x*m(1,0) + p.y*m(1,1) + p.z*m(1,2)
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- m(3,0)*m(1,0) - m(3,1)*m(1,1) - m(3,2)*m(1,2);
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z =
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p.x*m(2,0) + p.y*m(2,1) + p.z*m(2,2)
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- m(3,0)*m(2,0) - m(3,1)*m(2,1) - m(3,2)*m(2,2);
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return *this;
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}
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