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"""This module provides Plot3DAction controlling the viewpoint.
It provides QAction to rotate or pan a Plot3DWidget.
"""
__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 = 360.0 / 5.0
"""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 = 0.0
else:
angleStep = self._DEGREE_PER_SECONDS * (time.time() - self._previousTime)
self.getPlot3DWidget().viewport.orbitCamera("left", angleStep)
self._previousTime = time.time()
