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