PolygonalMesh Class Reference

#include <PolygonalMesh.h>

List of all members.

---

Detailed Description

This class provides a description of a mesh made of polygonal faces.

Its primary purpose is for loading geometry from files, which can then be used for visualization or collision detection. For example, the following lines load a mesh from a Wavefront OBJ file, then create a DecorativeMesh from it.

 PolygonalMesh mesh;
 std::ifstream file;
 file.open("teapot.obj");
 mesh.loadObjFile(file);
 file.close();
 DecorativeMesh decoration(mesh);
 

Public Member Functions
	PolygonalMesh ()
	Create a PolygonalMesh, which initially contains no vertices or faces.
	PolygonalMesh (const PolygonalMesh &copy)
PolygonalMesh &	operator= (const PolygonalMesh &copy)
	~PolygonalMesh ()
int	getNumFaces () const
	Get the number of faces in the mesh.
int	getNumVertices () const
	Get the number of vertices in the mesh.
const Vec3 &	getVertexPosition (int vertex) const
	Get the position of a vertex in the mesh.
int	getNumVerticesForFace (int face) const
	Get the number of vertices that make up a face.
int	getFaceVertex (int face, int vertex) const
	Get the index of one of the vertices of a face.
int	addVertex (const Vec3 &position)
	Add a vertex to the mesh.
int	addFace (const std::vector< int > &vertices)
	Add a face to the mesh.
void	scaleMesh (Real scale)
	Scale a mesh by multiplying every vertex by a fix value.
void	transformMesh (const Transform &transform)
	Transform a mesh by applying a Transform to every vertex.
void	loadObjFile (std::istream &file)
	Load a Wavefront OBJ file, adding the vertices and faces it contains to this mesh.
const PolygonalMeshImpl &	getImpl () const
PolygonalMeshImpl &	updImpl ()

---

Constructor & Destructor Documentation

PolygonalMesh

(

)

Create a PolygonalMesh, which initially contains no vertices or faces.

PolygonalMesh

(

const PolygonalMesh &

copy

)

~PolygonalMesh

(

)

---

Member Function Documentation

PolygonalMesh& operator=

(

const PolygonalMesh &

copy

)

int getNumFaces

(

)

const

Get the number of faces in the mesh.

int getNumVertices

(

)

const

Get the number of vertices in the mesh.

const Vec3& getVertexPosition

(

int

vertex

)

const

Get the position of a vertex in the mesh.

Parameters:

vertex

the index of the vertex to get

Returns:

the position of the specified vertex

int getNumVerticesForFace

(

int

face

)

const

Get the number of vertices that make up a face.

Parameters:

face

the index of the face

int getFaceVertex	(	int	face,
		int	vertex
	)			const

Get the index of one of the vertices of a face.

Parameters:

	face	the index of the face
	vertex	the index of the vertex within the face (from 0, 1, or 2 for a triangular face, etc.)

Returns:

the index of the specified vertex

int addVertex

(

const Vec3 &

position

)

Add a vertex to the mesh.

Parameters:

position

the position of the vertex to add

Returns:

the index of the newly added vertex

int addFace

(

const std::vector< int > &

vertices

)

Add a face to the mesh.

Parameters:

vertices

the indices of the vertices which make up the new face

Returns:

the index of the newly added face

void scaleMesh

(

Real

scale

)

Scale a mesh by multiplying every vertex by a fix value.

void transformMesh

(

const Transform &

transform

)

Transform a mesh by applying a Transform to every vertex.

void loadObjFile

(

std::istream &

file

)

Load a Wavefront OBJ file, adding the vertices and faces it contains to this mesh.

Parameters:

file

an input stream from which to load the file contents

const PolygonalMeshImpl& getImpl

(

)

const

PolygonalMeshImpl& updImpl

(

)

---

The documentation for this class was generated from the following file:

• PolygonalMesh.h