meshUtilities.h File Reference

#include "../pa6/Color.h"
#include "../pa6/Geometry.hpp"
#include <list>
#include "../pa5/Matrix.hpp"
#include <stdio.h>
#include "Triangle.h"

Go to the source code of this file.

Functions
Matrix< 4, 2 >	findBounds (list< Triangle *> triangles)
void	read (const char *fileName, list< Triangle *> *triangles)
void	scaleAndTranslate (list< Triangle *> triangles, double width, double height, double depth)

Detailed Description

Functions for working with triangular meshes.

A triangular mesh is stored as a list<Triangle*> (i.e., a list of pointers to Triangle objects).

Notes:

1. We are using a list rather than a vector to avoid confusion between vector and Vector.
2. We are using a list of pointers so that we can change the contents of the list (e.g., so we don't have to create a copy of the entire list when the Triangle objects are scaled)

Function Documentation

findBounds()

Matrix<4, 2> findBounds

(

list< Triangle *>

triangles

)

Find the bounds of a triangular mesh.

The bounds are returned as a Matrix of 2 points in 4-D. One point contains the minimum value for all dimensions and the other contains the maximum value for all dimensions.

Parameters

triangles

The "triangular mesh" (i.e., the list of Triangle*)

Returns

The bounds

read()

void read	(	const char *	fileName,
		list< Triangle *> *	triangles
	)

Read a triangular mesh.

Parameters

fileName	The name of the file to read from
triangles	The "triangular mesh" to populat

scaleAndTranslate()

void scaleAndTranslate	(	list< Triangle *>	triangles,
		double	width,
		double	height,
		double	depth
	)

Scales and translates the given Triangle objects so that they fit within a rectangular solid and are centered at 0,0. The aspect ratio of the Triangle objects will remain unchanged.

Parameters

triangles	The Triangle objects to scale and translate
width	The width of the rectangle
height	The height of the rectangle
depth	The depth of the rectangle