我需要让我的GLCanvas具有透明背景。我想要收到的效果是,JFrame背景中不会出现黑色背景而是灰色。我用 capabilities.setBackgroundOpaque(假); 和 gl.glClearColor(0.0f,0.0f,0.0f,0.0f); 但它不起作用。我知道有同样的问题(Jogl: How to make a transparent background on com.jogamp.opengl.swt.GLCanvas?),但我不明白HUD是如何工作的。在旁边,我只是简单地理解为什么metod capabilities.setBackgroundOpaque(false);不起作用。
这是我的代码
public class JOGL implements GLEventListener {
private static final int FPS = 30;
@Override
public void display(GLAutoDrawable gLDrawable) {
GL2 gl = gLDrawable.getGL().getGL2();
// Clear the drawing area
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
// Reset the current matrix to the "identity"
gl.glLoadIdentity();
// Move the "drawing cursor" around
gl.glTranslatef(-1.5f, 0.0f, -6.0f);
// Drawing Using Triangles
gl.glBegin(GL.GL_TRIANGLES);
gl.glColor3f(1.0f, 0.0f, 0.0f); // Set the current drawing color to red
gl.glVertex3f(0.0f, 1.0f, 0.0f); // Top
gl.glColor3f(0.0f, 1.0f, 0.0f); // Set the current drawing color to green
gl.glVertex3f(-1.0f, -1.0f, 0.0f); // Bottom Left
gl.glColor3f(0.0f, 0.0f, 1.0f); // Set the current drawing color to blue
gl.glVertex3f(1.0f, -1.0f, 0.0f); // Bottom Right
// Finished Drawing The Triangle
gl.glEnd();
gl.glFlush();
}
@Override
public void init(GLAutoDrawable glDrawable) {
GL2 gl = glDrawable.getGL().getGL2();
gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
}
@Override
public void reshape(GLAutoDrawable gLDrawable, int x, int y, int width, int height) {
}
@Override
public void dispose(GLAutoDrawable gLDrawable) {
}
public static void main(String[] args) {
GLCapabilities capabilities = new GLCapabilities(null);
capabilities.setBackgroundOpaque(false);
final GLCanvas canvas = new GLCanvas(capabilities);
final JFrame frame = new JFrame("JOGL - test obj loading");
frame.setLayout(null);
final FPSAnimator animator = new FPSAnimator(canvas, FPS);
canvas.addGLEventListener(new JOGL());
JPanel p = new JPanel();
frame.add(canvas);
frame.add(p);
p.setBackground(Color.red);
canvas.setBounds(0, 0, 1024, 768);
p.setBounds(0, 0, 100, 500);
frame.setSize(1040, 900);
frame.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
animator.stop();
frame.dispose();
System.exit(0);
}
});
frame.setVisible(true);
animator.start();
canvas.requestFocus();
}
}
答案 0 :(得分:0)
而是使用GLJPanel,将其放入JInternalFrame,在两者上调用setOpaque(false)。我是在基于JOGL的Eclipse RCP应用程序中完成的,以便创建一个透明的“窗口”,我可以将其移到GUI的其余部分之上。
P.S:JOGL本身已有2个WaveFront OBJ加载器,而我的(最强大的)加载器位于JogAmp's Ardor3D Continuation。
答案 1 :(得分:0)
我是jogl的新手,当我使用jogl时遇到了类似的问题,但我终于找到了一个解决方案。 使用以下代码创建具有透明背景的GLJPanel对象。
//Indeed, use GLJPanel instead of GLCanvas
GLProfile glp = GLProfile.getDefault();
GLCapabilities glcap = new GLCapabilities(glp);
glcap.setAlphaBits(8);
GLJPanel pane = new GLJpanel(glcap);
pane.setOpaque(false);