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Merge pull request #402 from vladimir-kraus/develop

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added method clear() to GLViewWidget
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Ogi Moore 2020-06-22 20:58:04 -07:00 committed by GitHub
commit 91ee83ab36
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1 changed files with 29 additions and 16 deletions
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45
pyqtgraph/opengl/GLViewWidget.py
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@ -16,7 +16,6 @@ class GLViewWidget(QtOpenGL.QGLWidget):
- Axis/grid display
- Export options
High-DPI displays: Qt5 should automatically detect the correct resolution.
For Qt4, specify the ``devicePixelRatio`` argument when initializing the
widget (usually this value is 1-2).
@ -32,25 +31,31 @@ class GLViewWidget(QtOpenGL.QGLWidget):
QtOpenGL.QGLWidget.__init__(self, parent, ShareWidget)
self.setFocusPolicy(QtCore.Qt.ClickFocus)
self.opts = {
'center': Vector(0,0,0), ## will always appear at the center of the widget
'distance': 10.0, ## distance of camera from center
'fov': 60, ## horizontal field of view in degrees
'elevation': 30, ## camera's angle of elevation in degrees
'azimuth': 45, ## camera's azimuthal angle in degrees
## (rotation around z-axis 0 points along x-axis)
'viewport': None, ## glViewport params; None == whole widget
'devicePixelRatio': devicePixelRatio,
'devicePixelRatio': devicePixelRatio
}
self.setBackgroundColor('k')
self.reset()
self.items = []
self.noRepeatKeys = [QtCore.Qt.Key_Right, QtCore.Qt.Key_Left, QtCore.Qt.Key_Up, QtCore.Qt.Key_Down, QtCore.Qt.Key_PageUp, QtCore.Qt.Key_PageDown]
self.keysPressed = {}
self.keyTimer = QtCore.QTimer()
self.keyTimer.timeout.connect(self.evalKeyState)
self.makeCurrent()
def reset(self):
"""
Initialize the widget state or reset the current state to the original state.
"""
self.opts['center'] = Vector(0,0,0) ## will always appear at the center of the widget
self.opts['distance'] = 10.0 ## distance of camera from center
self.opts['fov'] = 60 ## horizontal field of view in degrees
self.opts['elevation'] = 30 ## camera's angle of elevation in degrees
self.opts['azimuth'] = 45 ## camera's azimuthal angle in degrees
## (rotation around z-axis 0 points along x-axis)
self.opts['viewport'] = None ## glViewport params; None == whole widget
self.setBackgroundColor('k')
def addItem(self, item):
self.items.append(item)
@ -66,10 +71,21 @@ class GLViewWidget(QtOpenGL.QGLWidget):
self.update()
def removeItem(self, item):
"""
Remove the item from the scene.
"""
self.items.remove(item)
item._setView(None)
self.update()
def clear(self):
"""
Remove all items from the scene.
"""
for item in self.items:
item._setView(None)
self.items = []
self.update()
def initializeGL(self):
self.resizeGL(self.width(), self.height())
@ -370,7 +386,6 @@ class GLViewWidget(QtOpenGL.QGLWidget):
#self.paintGL(region=region)
#self.swapBuffers()
def wheelEvent(self, ev):
delta = 0
if QT_LIB in ['PyQt4', 'PySide']:
@ -532,6 +547,4 @@ class GLViewWidget(QtOpenGL.QGLWidget):
glfbo.glDeleteFramebuffers([fb])
return output