连接四元数并应用于 3D 实体
Contents
[
Hide
]
Aspose.3D for Java 允许开发人员将两个旋转转换合并为一个以四元数表示的旋转转换。
级联四元数
四元数用于表示 3D 空间中的方向。Quaternion 类公开的concat方法可用于组合两个四元数。在此代码示例中，我们组合两个四元数并获得第三个结果四元数，然后将这三个四元数应用于三个圆柱体。
编程示例
此代码示例将两个四元数组合在一起，并将它们应用于不同的圆柱体。
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); |
结果3ds MAX
