canvas3d.py 文件源码

def mouseMoveEvent(self, event):
        dx = event.pos().x() - self._lastPos.x()
        dy = event.pos().y() - self._lastPos.y()

        if self.isRotating:
            if event.buttons() == Qt.LeftButton:
                self.setXRotation(self.rotX - dy / 2)
                self.setYRotation(self.rotY + dx / 2)
            elif event.buttons() == Qt.RightButton:
                self.setXRotation(self.rotX - dy / 2)
                self.setZRotation(self.rotZ + dx / 2)
        elif self.isPanning:
            if event.buttons() == Qt.LeftButton:
                min_side = min(self.frameSize().width(), self.frameSize().height())
                dx, dy, dz = self.deRotate(dx, dy, 0)
                self.posX += dx / min_side
                self.posY += dy / min_side
                self.posZ += dz / min_side

        self._lastPos = event.pos()
        self.update()