A basic triangle mesh. More...

#include <TriMesh.h>

Inheritance diagram for Meshing::TriMesh:

Public Types
typedef IntTriple	Tri

Public Member Functions
bool	Load (const char *fn)

bool	Save (const char *fn) const

Accessors
Vector3 &	TriangleVertex (int tri, int v)
	Returns the v'th vertex of triangle tri.

const Vector3 &	TriangleVertex (int tri, int v) const

Vector3	TriangleNormal (int tri) const
	Calculates the normal of triangle tri.

void	GetTriangle (int tri, Triangle3D &t) const
	Returns a Triangle3D structure for triangle tri.

void	GetIncidentTris (int v, vector< int > &tris) const
	Calculates a list of triangle indices incident to vertex v. O(T) time.

void	AppendIncidentTris (int v, vector< int > &t) const
	Same as above, but appends the triangles to the end of t.

void	GetEdge (int tri, int e, int &v1, int &v2) const
	Returns the vertex indices (v1,v2) of the e'th edge of triangle tri.

int	GetAdjacentTri (int tri, int e) const

Calculations
bool	IsValid () const

void	GetAABB (Vector3 &bmin, Vector3 &bmax) const

int	ClosestPoint (const Vector3 &pt, Vector3 &cp) const

int	RayCast (const Ray3D &r, Vector3 &pt) const

bool	Intersects (const Plane3D &) const

bool	PlaneSplits (const Plane3D &, Real &dmin, Real &dmax) const

Modifiers
void	Transform (const Matrix4 &mat)

void	FlipFaces ()

void	Merge (const vector< TriMesh > &meshes)

void	MergeWith (const TriMesh &mesh)

void	RemoveUnusedVerts ()

Public Attributes
vector< Vector3 >	verts

vector< Tri >	tris

Detailed Description

A basic triangle mesh.

The mesh is represented by a list of vertices (Vector3's) and a list of indexed triangles. A triangle is represented by a set of 3 integers (an IntTriple) that index into the vertex list to produce the actual triangle vertices. So a triangle whose vertices are verts[1], verts[2], and verts[3] will be represented by the IntTriple [1,2,3].

There are several "types" of indices floating around:

Vertex index - an index into the verts array.
Triangle index - an index into the tris array.
i'th vertex of a triangle t, i={0,1,2} - t[i] is a vertex index.
j'th edge of a triangle t, j={0,1,2} - the edge between vertices indexed by t[j+1] and t[j+2] (indices modulo 3), that is, the edge opposite the j'th vertex of t.

Member Function Documentation

int Meshing::TriMesh::GetAdjacentTri	(	int	tri,
		int	e
	)		const

Returns the index of the triangle adjacent to tri, at the e'th edge or -1 if there is none. O(T) time.

References GetEdge(), GetTriangle(), and Math3D::Matrix4::mulPoint().

The documentation for this struct was generated from the following files:

TriMesh.h
TriMesh.cpp

Public Types

Public Member Functions

Public Attributes

Detailed Description

Member Function Documentation