STL.java

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package eu.mihosoft.vrl.v3d;
 
import eu.mihosoft.vrl.v3d.ext.imagej.STLLoader;
 
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
 
import javax.vecmath.Point3f;
 
// TODO: Auto-generated Javadoc
public class STL {
    
    public static CSG file(URL path) throws IOException, URISyntaxException {
        final URI uri =path.toURI();
        Map<String, String> env = new HashMap<>(); 
        env.put("create", "true");
        FileSystem zipfs = FileSystems.newFileSystem(uri, env);
        Path myFolderPath = Paths.get(uri);
        return file(myFolderPath);
    }
 
    public static CSG file(Path path) throws IOException {
        STLLoader loader = new STLLoader();
 
        List<Polygon> polygons = new ArrayList<>();
        List<Vector3d> vertices = new ArrayList<>();
        for (Point3f p : loader.parse(path.toFile())) {
            vertices.add(new Vector3d(p.x, p.y, p.z));
            if (vertices.size() == 3) {
                try {
                    polygons.add(Polygon.fromPointsAllowDegenerate(vertices));
                } catch (RuntimeException ex) {
                    ex.printStackTrace();
                }
                vertices = new ArrayList<>();
            }
        }
 
        return CSG.fromPolygons(new PropertyStorage(), polygons);
    }
}