Python 3D 鼠标控制相机旋转应用程序

Python程序：实现鼠标控制相机旋转的 3D 应用程序

from panda3d.core import WindowProperties
from direct.showbase.ShowBase import ShowBase

class MyApp(ShowBase):
    def __init__(self):
        ShowBase.__init__(self)

        # 隐藏鼠标光标
        props = WindowProperties()
        props.setCursorHidden(True)
        self.win.requestProperties(props)

        # 设置鼠标控制
        self.accept('mouse1', self.toggleMouseControl)

        self.mouseControlEnabled = False

    def toggleMouseControl(self):
        self.mouseControlEnabled = not self.mouseControlEnabled
        props = WindowProperties()
        props.setPointerHidden(self.mouseControlEnabled)
        self.win.requestProperties(props)

    def update(self):
        if self.mouseControlEnabled:
            # 获取鼠标移动的相对位置
            md = self.win.getPointer(0)
            x = md.getX()
            y = md.getY()

            # 计算相机的旋转角度
            self.camera.setH(self.camera.getH() - x * 0.2)
            self.camera.setP(self.camera.getP() - y * 0.2)

        # 继续更新场景
        return task.cont

app = MyApp()
app.run()