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.
141 lines
2.9 KiB
C++
141 lines
2.9 KiB
C++
//=======================================================================//
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// File: sphere.hpp //
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// Project: Architecture //
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// Author: J.M. Albertson //
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//-----------------------------------------------------------------------//
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// Copyright (C) 1994-1995, Virtual World Entertainments, //
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// PROPRIETARY AND CONFIDENTIAL //
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//=======================================================================//
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#pragma once
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#include "Stuff.hpp"
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#include "Point3D.hpp"
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namespace Stuff {class Sphere;}
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#if !defined(Spew)
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void
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Spew(
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const char* group,
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const Stuff::Sphere& sphere
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);
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#endif
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namespace Stuff {
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class Plane;
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class OBB;
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Sphere ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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class Sphere
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{
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public:
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Point3D
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center;
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Scalar
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radius;
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static Sphere
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s_Identity;
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Sphere()
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{}
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Sphere(
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const Point3D &A_Point,
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Scalar Radius
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):
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center(A_Point),
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radius(Radius)
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{}
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Sphere(
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Scalar X,
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Scalar Y,
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Scalar Z,
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Scalar Radius
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):
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center(X,Y,Z),
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radius(Radius)
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{}
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Sphere(const Sphere& sphere):
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center(sphere.center),
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radius(sphere.radius)
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{}
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explicit Sphere(const OBB& obb)
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{*this = obb;}
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Sphere&
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operator =(const Sphere &sphere)
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{
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Check_Pointer(this); Check_Object(&sphere);
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center = sphere.center;
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radius = sphere.radius;
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return *this;
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}
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Sphere&
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operator =(const OBB &obb);
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Scalar
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GetVolume()
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{Check_Object(this); return 4.0f/3.0f*Pi*radius*radius*radius;}
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int
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ComputeBounds(ReadOnlyArrayOf<Point3D> &points);
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//
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// Transforms
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//
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Sphere&
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Multiply(
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const Sphere &s,
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const LinearMatrix4D &m
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)
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{center.Multiply(s.center,m); radius = s.radius; return *this;}
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//
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// Intersection functions
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//
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Sphere&
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Union(
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const Sphere& sphere1,
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const Sphere& sphere2
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);
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Sphere&
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Union(const Point3D& point);
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bool
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Contains(const Point3D &point) const
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{
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Check_Object(this); Check_Object(&point);
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Vector3D diff;
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diff.Subtract(center, point);
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return radius*radius - diff.GetLengthSquared() > -SMALL;
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}
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bool
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Intersects(const Sphere &sphere) const
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{
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Check_Object(this); Check_Object(&sphere);
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Scalar r = radius + sphere.radius;
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Vector3D temp;
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temp.Subtract(center, sphere.center);
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return r*r - temp.GetLengthSquared() >= -SMALL;
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}
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bool
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Intersects(const Plane &plane) const;
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#if !defined(Spew)
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friend void
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::Spew(
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const char* group,
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const Sphere& sphere
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);
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#endif
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void
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TestInstance() const
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{}
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static bool
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TestClass();
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};
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}
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