56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
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/**
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@file Intersect.h
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@maintainer Morgan McGuire, http://graphics.cs.williams.edu
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@created 2009-06-29
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@edited 2009-06-29
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Copyright 2000-2009, Morgan McGuire.
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All rights reserved.
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From the G3D Innovation Engine
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http://g3d.sf.net
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*/
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#ifndef G3D_Intersect
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#define G3D_Intersect
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#include "G3D/platform.h"
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#include "G3D/Ray.h"
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#include "G3D/AABox.h"
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namespace G3D {
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/**
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@beta
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*/
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class Intersect {
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public:
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/** \brief Returns true if the intersection of the ray and the solid box is non-empty.
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\cite "Fast Ray / Axis-Aligned Bounding Box Overlap Tests using Ray Slopes"
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by Martin Eisemann, Thorsten Grosch, Stefan M<EFBFBD>ller and Marcus Magnor
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Computer Graphics Lab, TU Braunschweig, Germany and
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University of Koblenz-Landau, Germany
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*/
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static bool __fastcall rayAABox(const Ray& ray, const AABox& box);
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/** \brief Returns true if the intersection of the ray and the solid box is non-empty.
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\param time If there is an intersection, set to the time to that intersection. If the ray origin is inside the box,
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this is a negative value indicating the distance backwards from the ray origin to the first intersection.
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\a time is not set if there is no intersection.
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\cite Slope-Mul method from "Fast Ray / Axis-Aligned Bounding Box Overlap Tests using Ray Slopes"
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by Martin Eisemann, Thorsten Grosch, Stefan M<EFBFBD>ller and Marcus Magnor
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Computer Graphics Lab, TU Braunschweig, Germany and
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University of Koblenz-Landau, Germany
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*/
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static bool __fastcall rayAABox(const Ray& ray, const AABox& box, float& time);
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};
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}
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#endif
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