使用python和bindings(pyqt,pyopengl)我创建了一个简单的3D查看器。我想创建一些由用户交互操作/触发的基本操作。该计划有两个部分。
opengl小部件:
class OpenGLWidget(QtOpenGL.QGLWidget):
def __init__(self, parent=None):
self.parent = parent
QtOpenGL.QGLWidget.__init__(self, parent)
...
def draw(self):
#here I would like to change colour of background from right mouse click menu
glClearColor(self.R,self.G,self.B,1)
主要小部件:
class MainWindow(QtGui.QMainWindow):
def __init__(self):
QtGui.QMainWindow.__init__(self)
self.resize(initial_window_width, initial_window_height)
self.setWindowTitle('Window Name')
self.setMouseTracking(True)
# location of window on screen
self.setGeometry(5, 25, initial_window_width, initial_window_height)
self.createActions()
self.createMenus()
# sets opengl window in central widget position
self.OpenGLWidget = OpenGLWidget()
self.setCentralWidget(self.OpenGLWidget)
@pyqtSlot(QtCore.QPoint)
def contextMenuRequested(self,point):
menu = QtGui.QMenu()
action1 = menu.addAction("Blue")
self.connect(action1,SIGNAL("triggered()"), self,SLOT("Blue()"))
menu.exec_(self.mapToGlobal(point))
@pyqtSlot()
def Blue(self):
self.R = 0
self.G = 0
self.B = 1
运行整个程序的代码:
if __name__=='__main__':
app = QtGui.QApplication(sys.argv)
win = MainWindow()
win.setContextMenuPolicy(QtCore.Qt.CustomContextMenu);
win.connect(win, SIGNAL("customContextMenuRequested(QPoint)"),
win, SLOT("contextMenuRequested(QPoint)"))
win.show()
sys.exit(app.exec_())
我想知道如何更改主窗口小部件中的值R,G,B,背景颜色将在 opengl小部件中更改为蓝色。
答案 0 :(得分:1)
在OpenGLWidget
内部添加以下方法:
def setColor(R, G, B):
self.R = R
self.G = G
self.B = B
MainWindow
中的Blue()
内部将现有代码替换为以下代码:
self.OpenGLWidget.setColor(0,0,1)
self.openGLWidget.draw() # or do whatever you want, variables are changed in `OpenGLWidget`
要将颜色设置为绿色,请使用setColor()
参数调用0,1,0
。