Save 3D Meshes in Custom Binary Format
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Aspose.3D for Java API desteklenen herhangi bir 3D belgesini açmak için desteğe sahiptir ve ardından ikili dosyadaki döküntüleri yazar.
3D dosyasını yükleyin ve özel ikili format programlama örneğinde kafesler yazın
Scene
sınıfındaki root. üyesi tarafından maruz kalan yöntemi kabul etmek, her alt düğümünü ziyaret etmenizi sağlar. Aşağıdaki kod parçacığı sadece kafesleri dönüştürmeye izin verir.
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// 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; | |
} | |
}); | |
} |