Concatenate Quaternions and apply on 3D entities
Contents
[
Hide
]
Aspose.3D for Java allows developers to combine two rotation transformation into one represented in a quaternion.
Concatenate Quaternions
Quaternions are used to represent an orientation in 3D space. The concat method exposed by the Quaternion
class can be used to combine two quaternions. In this code example, we combine two quaternions and get a third resulting quaternion, and then apply these three quaternions to three cylinders.
Programming Sample
This code example combine two quaternions and apply them to different cylinders.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
// The path to the documents directory. | |
String MyDir = RunExamples.getDataDir(); | |
Scene scene = new Scene(); | |
Quaternion q1 = Quaternion.fromEulerAngle(Math.PI * 0.5, 0, 0); | |
Vector3.X_AXIS.x = 3; | |
Quaternion q2 = Quaternion.fromAngleAxis(-Math.PI * 0.5, Vector3.X_AXIS); | |
// Concatenate q1 and q2. q1 and q2 rotate alone x-axis with same angle but different direction, | |
// So the concatenated result will be identity quaternion. | |
Quaternion q3 = q1.concat(q2); | |
// Create 3 cylinders to represent each quaternion | |
Node cylinder = scene.getRootNode().createChildNode("cylinder-q1", new Cylinder(0.1, 1, 2)); | |
cylinder.getTransform().setRotation(q1); | |
cylinder.getTransform().setTranslation(new Vector3(-5, 2, 0)); | |
cylinder = scene.getRootNode().createChildNode("cylinder-q2", new Cylinder(0.1, 1, 2)); | |
cylinder.getTransform().setRotation(q2); | |
cylinder.getTransform().setTranslation(new Vector3(0, 2, 0)); | |
cylinder = scene.getRootNode().createChildNode("cylinder-q3", new Cylinder(0.1, 1, 2)); | |
cylinder.getTransform().setRotation(q3); | |
cylinder.getTransform().setTranslation(new Vector3(5, 2, 0)); | |
MyDir = MyDir + "test_out.fbx"; | |
// Save to file | |
scene.save(MyDir, FileFormat.FBX7400ASCII); |
Result in 3ds MAX