本文整理汇总了Python中navigation.Navigation.get_scale方法的典型用法代码示例。如果您正苦于以下问题：Python Navigation.get_scale方法的具体用法？Python Navigation.get_scale怎么用？Python Navigation.get_scale使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类navigation.Navigation的用法示例。
在下文中一共展示了Navigation.get_scale方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: GLWidget
# 需要导入模块: from navigation import Navigation [as 别名]
# 或者: from navigation.Navigation import get_scale [as 别名]
class GLWidget(QtOpenGL.QGLWidget):
# initial window size
w, h = 1024, 768
isInitialized = False
def __init__(self, parent=None):
super(GLWidget, self).__init__(parent)
self.parent = parent
self.setMouseTracking(True)
self.nav = Navigation()
self.navInterface = NavigationInterface(self.nav)
self.dataDisplay = DataDisplay()
# self.navigateSignal.connect(self.navigateEvent)
SIGNALS.navigateSignal.connect(self.navigateEvent)
def minimumSizeHint(self):
return QtCore.QSize(50, 50)
def sizeHint(self):
return QtCore.QSize(self.w, self.h)
# get position coordinates
def coord(self, pos):
return (pos.x(), pos.y())
# get normalized coordinates
def norm(self, pair):
return (pair[0]/float(self.w), pair[1]/float(self.h))
def ncoord(self, pos):
return self.norm(self.coord(pos))
def initializeGL(self):
self.dataDisplay.initialize()
self.isInitialized = True
def paintGL(self):
tx, ty = self.nav.get_translation()
sx, sy = self.nav.get_scale()
self.dataDisplay.transform(tx, ty, sx, sy)
self.dataDisplay.paint()
# handle window resizing
def resizeGL(self, w, h):
self.w, self.h = w, h
self.dataDisplay.resize(w, h)
def focusInEvent(self):
pass
def focusOutEvent(self):
self.keyReleaseEvent(None)
def navigateEvent(self):
self.updateGL()
def mousePressEvent(self, event):
x, y = self.ncoord(event.pos())
self.navInterface.mousePress(x, y, event.button())
def mouseReleaseEvent(self, event):
self.navInterface.mouseRelease()
def mouseMoveEvent(self, event):
x, y = self.ncoord(event.pos())
self.navInterface.mouseMove(x, y)
self.parent.statusbar.showMessage("%g, %g" % self.getMousePosition(x, y))
if self.navInterface.mouseButton:
SIGNALS.navigateSignal.emit()
def getMousePosition(self, x, y):
"""
convert mouse coordinates => data coordinates
"""
tx, ty = self.nav.get_translation(False)
sx, sy = self.nav.get_scale()
# x = .5 * (1. - 1./sx) - tx + x/sx# + self.nav.offsetx
# y = .5 * (1. - 1./sy) - ty + y/sy
x, y = self.nav.get_data_coordinates(x, y)
# inverse data normalization
xmin, xmax, ymin, ymax = self.dataDisplay.get_bounds()
x = xmin + x * (xmax - xmin)
y = ymin + y * (ymax - ymin)
y = -y
return x, y
def wheelEvent(self, event):
self.navInterface.mouseWheel(event.delta())
SIGNALS.navigateSignal.emit()
def keyPressEvent(self, e):
key = ""
if e.key() == QtCore.Qt.Key_Control:
key = KEY_CTRL
if e.key() == QtCore.Qt.Key_Shift:
key = KEY_SHIFT
#.........这里部分代码省略.........