Sparen Sie 3D Maschen im benutzer definierten Binär format

Aspose.3D for Java API bietet Unterstützung, um jedes unterstützte 3D-Dokument zu öffnen und dann Meshes in die Binär datei zu schreiben.

Laden Sie 3D Datei und schreiben Sie Meshes in benutzer definiertes Programmier muster im Binärformat

Akzeptieren Sie die Methode, die vom RootNode-Mitglied in der Scene-Klasse bereit gestellt wird, und ermöglicht den Besuch jedes Unter knotens. Das unten stehende Code-Snippet ermöglicht nur das Konvertieren von Maschen.

// The path to the documents directory.
String MyDir = RunExamples.getDataDir();
// load a 3D file
Scene scene = new Scene(MyDir + "test.fbx");
/*
* 3D format demonstration is simple
*
* struct File {
*   MeshBlock blocks[];
* };
*
* struct Vertex {
*   float x;
*   float y;
*   float z;
* };
*
* struct Triangle {
*   int a;
*   int b;
*   int c;
* };
*
* struct MeshBlock {
*   int numControlPoints;
*   int numTriangles;
*   Vertex vertices[numControlPoints];
*   Triangle faces[numTriangles];
* };
*/
// open file for writing in binary mode
try (DataOutputStream writer = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(MyDir + "Save3DMeshesInCustomBinaryFormat_out"))))
{
    // visit each descent nodes
    scene.getRootNode().accept(new NodeVisitor(){
        @Override
        public boolean call(Node node) {
            try {
                for (Entity entity : node.getEntities()) {
                // only convert meshes, lights/camera and other stuff will be ignored
                if (!(entity instanceof IMeshConvertible))
                    continue;
                Mesh m = ((IMeshConvertible) entity).toMesh();
                List<Vector4> controlPoints = m.getControlPoints();
                // triangulate the mesh, so triFaces will only store triangle indices
                int[][] triFaces = PolygonModifier.triangulate(controlPoints, m.getPolygons());
                // gets the global transform matrix
                Matrix4 transform = node.getGlobalTransform().getTransformMatrix();
                // write number of control points and triangle indices
                writer.writeInt(controlPoints.size());
                writer.writeInt(triFaces.length);
                // write control points
                for (int i = 0; i < controlPoints.size(); i++) {
                    // calculate the control points in world space and save them to file
                    Vector4 cp = Matrix4.mul(transform, controlPoints.get(i));
                    writer.writeFloat((float) cp.x);
                    writer.writeFloat((float) cp.y);
                    writer.writeFloat((float) cp.z);
                }
                // write triangle indices
                for (int i = 0; i < triFaces.length; i++) {
                    writer.writeInt(triFaces[i][0]);
                    writer.writeInt(triFaces[i][1]);
                    writer.writeInt(triFaces[i][2]);
                }
            }
        } catch(Exception e) {
            e.printStackTrace();
        }
        return true;
    }
});
}