三维模型的布尔运算 java代码
时间: 2023-12-29 15:04:05 浏览: 155
三维模型的布尔运算是指将两个或多个三维模型进行合并、交集、差集等操作。在Java中,可以使用Java3D库来进行三维模型的布尔运算。
下面是一个简单的Java代码演示了如何使用Java3D库来进行三维模型的布尔运算:
```java
import javax.media.j3d.*;
import javax.vecmath.*;
public class BooleanOperation {
public static void main(String[] args) {
// 创建两个三维立方体
Box box1 = new Box(0.5f, 0.5f, 0.5f, Box.GENERATE_NORMALS, null);
Box box2 = new Box(0.5f, 0.5f, 0.5f, Box.GENERATE_NORMALS, null);
// 创建组节点
BranchGroup group = new BranchGroup();
// 将两个立方体添加到组节点
group.addChild(box1);
group.addChild(box2);
// 执行布尔运算
BooleanOperation bo = new BooleanOperation();
Shape3D result = bo.subtract(box1, box2);
// 将结果添加到组节点
group.addChild(result);
// 创建窗口
SimpleUniverse universe = new SimpleUniverse();
universe.getViewingPlatform().setNominalViewingTransform();
universe.addBranchGraph(group);
}
// 执行差集运算
public Shape3D subtract(Node node1, Node node2) {
// 创建差集对象
Shape3D shape = new Shape3D();
try {
// 创建差集操作
BooleanOperation bop = new BooleanOperation(BooleanOperation.SUBTRACT);
// 执行差集运算
bop.setOperand(0, node1);
bop.setOperand(1, node2);
bop.setCapability(BooleanOperation.ALLOW_OPERAND_WRITE);
bop.setCapability(BooleanOperation.ALLOW_TYPE_WRITE);
bop.setCapability(BooleanOperation.ALLOW_OPERATION_WRITE);
bop.setCapability(Node.ALLOW_BOUNDS_READ);
bop.setCapability(Node.ALLOW_BOUNDS_WRITE);
bop.setCapability(Node.ALLOW_CHILDREN_READ);
bop.setCapability(Node.ALLOW_CHILDREN_WRITE);
bop.setCapability(Node.ENABLE_PICK_REPORTING);
bop.setCapability(Node.ALLOW_PICKABLE_READ);
bop.setCapability(Node.ALLOW_PICKABLE_WRITE);
bop.setCapability(Node.ALLOW_LOCAL_TO_VWORLD_READ);
bop.setCapability(Node.ALLOW_LOCAL_TO_VWORLD_WRITE);
bop.setCapability(Node.ALLOW_COLLIDABLE_READ);
bop.setCapability(Node.ALLOW_COLLIDABLE_WRITE);
bop.setCapability(Node.ALLOW_AUTO_COMPUTE_BOUNDS_READ);
bop.setCapability(Node.ALLOW_AUTO_COMPUTE_BOUNDS_WRITE);
bop.setCapability(Node.ALLOW_BOUNDS_READ);
bop.setCapability(Node.ALLOW_BOUNDS_WRITE);
bop.setCapability(Node.ALLOW_BOUNDS_READ);
bop.setCapability(Node.ALLOW_BOUNDS_WRITE);
bop.setCapability(Node.ALLOW_BOUNDS_READ);
bop.setCapability(Node.ALLOW_BOUNDS_WRITE);
bop.addScope(shape);
bop.initialize();
// 获取结果
Shape3D result = (Shape3D)bop.getResult();
if (result != null) {
return result;
}
} catch(Exception e) {
e.printStackTrace();
}
return null;
}
}
```
在这个例子中,我们创建了两个立方体,然后使用`BooleanOperation`类执行了差集运算,最后将结果添加到了组节点中。需要注意的是,在执行布尔运算之前需要设置一些节点的属性,例如允许写入操作数、允许写入类型等。
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