我试图在Swing JPanel中插入一个Canvas3D对象,但代码似乎没有工作(即没有任何反应):
Canvas3D canvas = new Canvas3D(SimpleUniverse.getPreferredConfiguration()); SimpleUniverse universe = new SimpleUniverse(canvas); BranchGroup root = new BranchGroup(); root.addChild(new ColorCube()); universe.addBranchGraph(root); universe.getViewingPlatform().setNominalViewingTransform(); canvasPanel.add(canvas);
我错过了什么? JPanel是使用NetBean的Visual Editor创建的。
答案 0 :(得分:3)
可能你必须在面板上设置一个布局管理器,它会自动将子组件扩展到整个区域。默认情况下,JPanel具有FlowLayout,不扩展子组件。您可以通过调用:
来尝试BorderLayoutcanvasPanel.setLayout(new BorderLayout());
答案 1 :(得分:0)
Canvas3D需要传递给它的大小;从SimpleUniverse设置首选配置是不够的。就我而言,这意味着这段代码:
// 3D canvas initialization Canvas3D canvas = new Canvas3D(SimpleUniverse.getPreferredConfiguration()); SimpleUniverse universe = new SimpleUniverse(canvas); BranchGroup root = new BranchGroup(); root.addChild(new ColorCube()); universe.addBranchGraph(root); universe.getViewingPlatform().setNominalViewingTransform(); canvas.setSize(100, 100); canvasPanel.add(canvas);