# coding: utf-8
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"""This module provides Plot3DAction controlling the viewpoint.
It provides QAction to rotate or pan a Plot3DWidget.
"""
from __future__ import absolute_import, division
__authors__ = ["T. Vincent"]
__license__ = "MIT"
__date__ = "03/10/2017"
import time
import logging
from silx.gui import qt
from silx.gui.icons import getQIcon
from .Plot3DAction import Plot3DAction
_logger = logging.getLogger(__name__)
class _SetViewpointAction(Plot3DAction):
"""Base class for actions setting a Plot3DWidget viewpoint
:param parent: See :class:`QAction`
:param str face: The name of the predefined viewpoint
:param ~silx.gui.plot3d.Plot3DWidget.Plot3DWidget plot3d:
Plot3DWidget the action is associated with
"""
def __init__(self, parent, face, plot3d=None):
super(_SetViewpointAction, self).__init__(parent, plot3d)
assert face in ('side', 'front', 'back', 'left', 'right', 'top', 'bottom')
self._face = face
self.setIconVisibleInMenu(True)
self.setCheckable(False)
self.triggered[bool].connect(self._triggered)
def _triggered(self, checked=False):
plot3d = self.getPlot3DWidget()
if plot3d is None:
_logger.error(
'Cannot start/stop rotation, no associated Plot3DWidget')
else:
plot3d.viewport.camera.extrinsic.reset(face=self._face)
plot3d.centerScene()
[docs]class FrontViewpointAction(_SetViewpointAction):
"""QAction to set Plot3DWidget viewpoint to look from the front
:param parent: See :class:`QAction`
:param ~silx.gui.plot3d.Plot3DWidget.Plot3DWidget plot3d:
Plot3DWidget the action is associated with
"""
def __init__(self, parent, plot3d=None):
super(FrontViewpointAction, self).__init__(parent, 'front', plot3d)
self.setIcon(getQIcon('cube-front'))
self.setText('Front')
self.setToolTip('View along the -Z axis')
[docs]class BackViewpointAction(_SetViewpointAction):
"""QAction to set Plot3DWidget viewpoint to look from the back
:param parent: See :class:`QAction`
:param ~silx.gui.plot3d.Plot3DWidget.Plot3DWidget plot3d:
Plot3DWidget the action is associated with
"""
def __init__(self, parent, plot3d=None):
super(BackViewpointAction, self).__init__(parent, 'back', plot3d)
self.setIcon(getQIcon('cube-back'))
self.setText('Back')
self.setToolTip('View along the +Z axis')
[docs]class LeftViewpointAction(_SetViewpointAction):
"""QAction to set Plot3DWidget viewpoint to look from the left
:param parent: See :class:`QAction`
:param ~silx.gui.plot3d.Plot3DWidget.Plot3DWidget plot3d:
Plot3DWidget the action is associated with
"""
def __init__(self, parent, plot3d=None):
super(LeftViewpointAction, self).__init__(parent, 'left', plot3d)
self.setIcon(getQIcon('cube-left'))
self.setText('Left')
self.setToolTip('View along the +X axis')
[docs]class RightViewpointAction(_SetViewpointAction):
"""QAction to set Plot3DWidget viewpoint to look from the right
:param parent: See :class:`QAction`
:param ~silx.gui.plot3d.Plot3DWidget.Plot3DWidget plot3d:
Plot3DWidget the action is associated with
"""
def __init__(self, parent, plot3d=None):
super(RightViewpointAction, self).__init__(parent, 'right', plot3d)
self.setIcon(getQIcon('cube-right'))
self.setText('Right')
self.setToolTip('View along the -X axis')
[docs]class TopViewpointAction(_SetViewpointAction):
"""QAction to set Plot3DWidget viewpoint to look from the top
:param parent: See :class:`QAction`
:param ~silx.gui.plot3d.Plot3DWidget.Plot3DWidget plot3d:
Plot3DWidget the action is associated with
"""
def __init__(self, parent, plot3d=None):
super(TopViewpointAction, self).__init__(parent, 'top', plot3d)
self.setIcon(getQIcon('cube-top'))
self.setText('Top')
self.setToolTip('View along the -Y axis')
[docs]class BottomViewpointAction(_SetViewpointAction):
"""QAction to set Plot3DWidget viewpoint to look from the bottom
:param parent: See :class:`QAction`
:param ~silx.gui.plot3d.Plot3DWidget.Plot3DWidget plot3d:
Plot3DWidget the action is associated with
"""
def __init__(self, parent, plot3d=None):
super(BottomViewpointAction, self).__init__(parent, 'bottom', plot3d)
self.setIcon(getQIcon('cube-bottom'))
self.setText('Bottom')
self.setToolTip('View along the +Y axis')
[docs]class SideViewpointAction(_SetViewpointAction):
"""QAction to set Plot3DWidget viewpoint to look from the side
:param parent: See :class:`QAction`
:param ~silx.gui.plot3d.Plot3DWidget.Plot3DWidget plot3d:
Plot3DWidget the action is associated with
"""
def __init__(self, parent, plot3d=None):
super(SideViewpointAction, self).__init__(parent, 'side', plot3d)
self.setIcon(getQIcon('cube'))
self.setText('Side')
self.setToolTip('Side view')
[docs]class RotateViewpoint(Plot3DAction):
"""QAction to rotate the scene of a Plot3DWidget
:param parent: See :class:`QAction`
:param ~silx.gui.plot3d.Plot3DWidget.Plot3DWidget plot3d:
Plot3DWidget the action is associated with
"""
_TIMEOUT_MS = 50
"""Time interval between to frames (in milliseconds)"""
_DEGREE_PER_SECONDS = 360. / 5.
"""Rotation speed of the animation"""
def __init__(self, parent, plot3d=None):
super(RotateViewpoint, self).__init__(parent, plot3d)
self._previousTime = None
self._timer = qt.QTimer(self)
self._timer.setInterval(self._TIMEOUT_MS) # 20fps
self._timer.timeout.connect(self._rotate)
self.setIcon(getQIcon('cube-rotate'))
self.setText('Rotate scene')
self.setToolTip('Rotate the 3D scene around the vertical axis')
self.setCheckable(True)
self.triggered[bool].connect(self._triggered)
def _triggered(self, checked=False):
plot3d = self.getPlot3DWidget()
if plot3d is None:
_logger.error(
'Cannot start/stop rotation, no associated Plot3DWidget')
elif checked:
self._previousTime = time.time()
self._timer.start()
else:
self._timer.stop()
self._previousTime = None
def _rotate(self):
"""Perform a step of the rotation"""
if self._previousTime is None:
_logger.error('Previous time not set!')
angleStep = 0.
else:
angleStep = self._DEGREE_PER_SECONDS * (time.time() - self._previousTime)
self.getPlot3DWidget().viewport.orbitCamera('left', angleStep)
self._previousTime = time.time()
