ArtifactForms/MeshLibCore

package mesh.io;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.List;

import math.Vector3f;
import mesh.Face3D;
import mesh.Mesh3D;

public class SimpleObjectsReader {

    private List<Vector3f> vertices;

    private Mesh3D mesh;

    private List<Mesh3D> meshes;

    protected void addVertex(String[] sArray) {
        float x = Float.parseFloat(sArray[1]);
        float y = Float.parseFloat(sArray[2]);
        float z = Float.parseFloat(sArray[3]);
        vertices.add(new Vector3f(x, y, z));
    }

    protected void addFace(String[] sArray) {
        Face3D f = null;
        int[] iArray = new int[sArray.length - 1];
        for (int i = 0; i < iArray.length; i++) {
            iArray[i] = Integer.parseInt(sArray[i + 1]) - 1;
        }
        f = new Face3D(iArray);
        mesh.add(f);
    }

    public List<Mesh3D> read(File file) {
        meshes = new ArrayList<Mesh3D>();
        vertices = new ArrayList<Vector3f>();

        try {
            BufferedReader in = new BufferedReader(new FileReader(file));

            String line = null;
            while ((line = in.readLine()) != null) {
                if (line.startsWith("o ")) {
                    mesh = new Mesh3D();
                    meshes.add(mesh);
                }
                if (line.startsWith("v ")) {
                    String[] sArray = line.split(" ");
                    addVertex(sArray);
                }
                if (line.startsWith("f ")) {
                    String[] sArray = line.split(" ");
                    addFace(sArray);
                }
            }
            in.close();
        } catch (Exception e) {
            e.printStackTrace();
        }

        for (Mesh3D mesh : meshes) {
            for (Vector3f v : vertices) {
                mesh.add(new Vector3f(v));
            }
        }

        return meshes;
    }

}