为什么我的 OpenGL 放在标签栏时不旋转?
private void simpleOpenGlControl1_Paint_1(object sender, PaintEventArgs e)
{
Gl.glClear(Gl.GL_COLOR_BUFFER_BIT | Gl.GL_DEPTH_BUFFER_BIT);
Gl.glMatrixMode(Gl.GL_MODELVIEW);
Gl.glLoadIdentity();
Gl.glTranslated(0, 0, -5);
Gl.glRotated(yrot += 1, 1, 1, 0);
Gl.glPointSize(3);
Gl.glPolygonMode(Gl.GL_FRONT, Gl.GL_LINES);
Gl.glPolygonMode(Gl.GL_BACK, Gl.GL_LINES);
Gl.glBegin(Gl.GL_QUADS);
{
////Vista posterior
Gl.glColor3ub(255, 0, 255);
Gl.glVertex3d(0, 1, -1);
Gl.glVertex3d(1, -1, -1);
Gl.glVertex3d(-1, -1, -1);
Gl.glVertex3d(0, 1, -1);
////DEBAJO
Gl.glColor3ub(0, 255, 255);
Gl.glVertex3d(-1, -1, -1);
Gl.glVertex3d(1, -1, -1);
Gl.glVertex3d(1, -1, 1);
Gl.glVertex3d(-1, -1, 1);
////POR LA IZQUIERDA
Gl.glColor3ub(255, 255, 0);
Gl.glVertex3d(0, 1, -1);
Gl.glVertex3d(-1, -1, -1);
Gl.glVertex3d(-1, -1, 1);
Gl.glVertex3d(0, 1, 1);
////POR LA DERECHA
Gl.glColor3ub(0, 0, 255);
Gl.glVertex3d(0, 1, 1);
Gl.glVertex3d(1, -1, 1);
Gl.glVertex3d(1, -1, -1);
Gl.glVertex3d(0, 1, -1);
Gl.glColor3ub(255, 0, 0);
Gl.glVertex3d(0, 1, 1);
Gl.glVertex3d(-1, -1, 1);
Gl.glVertex3d(1, -1, 1);
Gl.glVertex3d(0, 1, 1);
Gl.glEnd();
}
我打开了选项卡,但是当我单击另一个选项卡并返回到 OpenGL 选项卡时,3D 对象会发生变化,但它不会旋转。