CydandClaude Opus 4.8
4abbf8879f
Imports the current Win32 source for the pod-racing game 'Red Planet', built on the MUNGA engine and its L4 (Win32/DirectX) platform layer: - MUNGA / MUNGA_L4: cross-platform engine core and Win32 backend - RP / RP_L4: Red Planet game logic and Win32 application - DivLoader, Setup1: asset loader and installer project - lib, MUNGA_L4/openal, MUNGA_L4/sos: third-party audio dependencies Removed stale Subversion metadata and added .gitignore/.gitattributes. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
77 lines
2.1 KiB
C++
77 lines
2.1 KiB
C++
#pragma once
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#include "normal.h"
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#include "point3d.h"
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class Sphere;
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class ExtentBox;
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Plane ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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class Plane SIGNATURED
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{
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public:
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//
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// The plane equation is P*N = 0, where P is a homogeneous point, and N
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// is a quadruple representing the plane. Due to some slight
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// improvements gained when the offset is negated, a negative offset is
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// stored. This must be taken into account whenever we are doing the
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// point-to-plane dot product, where we must do a subtraction instead of
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// an addition
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//
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Normal normal;
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Scalar offset;
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//
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// Constructors
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//
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Plane() {}
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Plane(Scalar x, Scalar y, Scalar z, Scalar offset) : normal(x,y,z), offset(offset) {}
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Plane(const Normal& n, Scalar offset) : normal(n), offset(offset) {}
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Plane(const Point3D& p0, const Point3D& p1, const Point3D& p2);
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//
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// Transform functions
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//
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Plane& Multiply(const Plane &p, const LinearMatrix &m);
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Plane& operator*=(const LinearMatrix &m)
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{
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Check(this);
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Plane t(*this);
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return Multiply(t,m);
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}
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//
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// half-space division functions
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//
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Logical SeenBy(const Vector3D &A_Vector) const { return normal * A_Vector < 0.0; }
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Logical SeenBy(const Point3D &A_Point) const { return normal * A_Point > offset; }
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Scalar DistanceTo(const Point3D& A_Point) const { return normal * A_Point - offset; }
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//
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// half-space containment functions
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//
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Logical Contains(const Point3D &point) const;
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Logical ContainsSomeOf(const Sphere &sphere) const;
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Logical ContainsAllOf(const Sphere &sphere) const;
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Logical ContainsSomeOf(const ExtentBox &box) const;
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Logical ContainsAllOf(const ExtentBox &box) const;
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//
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// plane surface intersection functions
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//
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Logical Intersect(const Sphere &sphere) const;
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Logical Intersect(const ExtentBox &box) const;
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friend std::ostream& operator<<(std::ostream& Stream, const Plane &A_Plane);
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Logical TestInstance() const;
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static Logical TestClass();
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//
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// Equation solutions
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//
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Scalar CalculateX(Scalar y, Scalar z);
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Scalar CalculateY(Scalar x, Scalar z);
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Scalar CalculateZ(Scalar x, Scalar y);
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};
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