69 lines
2.4 KiB
C
69 lines
2.4 KiB
C
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Contains a handy triangle class.
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* \file IceTriangle.h
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* \author Pierre Terdiman
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* \date January, 17, 2000
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// Include Guard
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#ifndef __ICETRIANGLE_H__
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#define __ICETRIANGLE_H__
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// Forward declarations
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class Moment;
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// Partitioning values
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enum PartVal
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{
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TRI_MINUS_SPACE = 0, //!< Triangle is in the negative space
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TRI_PLUS_SPACE = 1, //!< Triangle is in the positive space
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TRI_INTERSECT = 2, //!< Triangle intersects plane
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TRI_ON_PLANE = 3, //!< Triangle and plane are coplanar
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TRI_FORCEDWORD = 0x7fffffff
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};
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// A triangle class.
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class ICEMATHS_API Triangle
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{
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public:
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//! Constructor
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inline_ Triangle() {}
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//! Constructor
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inline_ Triangle(const Point& p0, const Point& p1, const Point& p2) { mVerts[0]=p0; mVerts[1]=p1; mVerts[2]=p2; }
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//! Copy constructor
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inline_ Triangle(const Triangle& triangle)
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{
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mVerts[0] = triangle.mVerts[0];
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mVerts[1] = triangle.mVerts[1];
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mVerts[2] = triangle.mVerts[2];
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}
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//! Destructor
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inline_ ~Triangle() {}
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//! Vertices
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Point mVerts[3];
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// Methods
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void Flip();
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float Area() const;
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float Perimeter() const;
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float Compacity() const;
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void Normal(Point& normal) const;
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void DenormalizedNormal(Point& normal) const;
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void Center(Point& center) const;
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inline_ Plane PlaneEquation() const { return Plane(mVerts[0], mVerts[1], mVerts[2]); }
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PartVal TestAgainstPlane(const Plane& plane, float epsilon) const;
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// float Distance(Point& cp, Point& cq, Tri& tri);
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void ComputeMoment(Moment& m);
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float MinEdgeLength() const;
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float MaxEdgeLength() const;
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void ComputePoint(float u, float v, Point& pt, udword* nearvtx=null) const;
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void Inflate(float fat_coeff, bool constant_border);
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};
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#endif // __ICETRIANGLE_H__
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