main.cpp

#include "rply.h"
#include <stdlib.h>
#include <string>
#include <string.h>
#include <stdio.h>
#include <math.h>
#include <iostream>
#include <vector>


using namespace std;
// use this namespace in this way:
// if (Surface::loadFile(filename)){//code}
// the vectors are vertex and faces
namespace Surface
{
	struct vert
	{
		float x;
		float y;
		float z;
	};
	struct face
	{
		int id0;
		int id1;
		int id2;
	};

	//only use this 2 vectors!
	vector<vert> vertex;
	vector<face> faces;
	
	//temp data to perform the algorithm
	vert tempVertex;
	face tempFace;
	int iIndex = 0;
	
	//vertex callback
	static int vertex_cb(p_ply_argument argument) {
		long eol;
		ply_get_argument_user_data(argument, NULL, &eol);
		switch (iIndex)
		{
		case 0:
			Surface::tempVertex.x = ply_get_argument_value(argument);
			iIndex++;
			break;
		case 1:
			Surface::tempVertex.y = ply_get_argument_value(argument);
			iIndex++;
			break;
		case 2:
			Surface::tempVertex.z = ply_get_argument_value(argument);
			Surface::vertex.push_back(Surface::tempVertex);
			iIndex = 0;
			break;
		}
		return 1;
	}

	//face callback
	static int face_cb(p_ply_argument argument) {
		long length, value_index;
		ply_get_argument_property(argument, NULL, &length, &value_index);
		switch (value_index) {
		case 0:
			tempFace.id0 = (int)ply_get_argument_value(argument);
			break;
		case 1:
			tempFace.id1 = (int)ply_get_argument_value(argument);
			break;
		case 2:
			tempFace.id2 = (int)ply_get_argument_value(argument);
			faces.push_back(tempFace);
			break;
		default:
			break;
		}
		return 1;
	}

	//just call this function
	bool loadFile(string filename)
	{
		long nvertices, ntriangles;
		p_ply ply = ply_open(filename.c_str(), NULL, 0, NULL);
		if (!ply) return false;
		if (!ply_read_header(ply)) return false;
		nvertices= ply_set_read_cb(ply, "vertex", "x", vertex_cb, NULL, 0);
		ply_set_read_cb(ply, "vertex", "y", vertex_cb, NULL, 0);
		ply_set_read_cb(ply, "vertex", "z", vertex_cb, NULL, 1);
		ntriangles = ply_set_read_cb(ply, "face", "vertex_indices", face_cb, NULL, 0);
		//printf("%ld\n%ld\n", nvertices, ntriangles);
		if (!ply_read(ply)) return false;
		ply_close(ply);
		return true;
	}
}


int main(int argc, char** argv)
{
	if (!Surface::loadFile("surfaceAB.ply"))
		cout << "not loaded" << endl;
	else
	{
		for each (Surface::vert v in Surface::vertex)
		{
			cout << v.x << " " << v.y << " " << v.z << endl;
		}
		for each (Surface::face f in Surface::faces)
		{
			cout << f.id0 << " " << f.id1 << " " << f.id2 << endl;
		}
		cout << "nvertex: " << Surface::vertex.size() << endl;
		cout << "nfaces: " << Surface::faces.size() << endl;
	}
	return EXIT_SUCCESS;
}