ArtifactForms/MeshLibCore

package mesh.io;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;

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

public class SimpleObjectReader {

    private Mesh3D mesh;

    public Mesh3D read(File file) {
        initializeMesh();

        try {
            BufferedReader in = new BufferedReader(new FileReader(file));
            String line = null;
            while ((line = in.readLine()) != null) {
                processLine(line);
            }
            in.close();
        } catch (Exception e) {
            e.printStackTrace();
        }

        return mesh;
    }

    private void processLine(String line) {
        if (line.startsWith("v ")) {
            String[] sArray = line.split(" ");
            addVertex(sArray);
        }

        if (line.startsWith("f ")) {
            String[] sArray = line.split(" ");
            addFace(sArray);
        }
    }

    private void initializeMesh() {
        mesh = new Mesh3D();
    }

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

    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);
    }

}