def viewAnimation(self):
t = self.m_animationFrame / (self.m_fps * 0.2)
self.m_animationFrame += 1
if t >= 1:
self.stopViewAnimation()
ec = QtCore.QEasingCurve(QtCore.QEasingCurve.OutExpo)
val = ec.valueForProgress(t)
self.m_xRot = self.m_xRotStored + (self.m_xRotTarget - self.m_xRotStored) * val
self.m_yRot = self.m_yRotStored + (self.m_yRotTarget - self.m_yRotStored) * val
self.updateView()
def __init__(self):
super(Robot, self).__init__()
self.torsoItem = RobotTorso(self)
self.headItem = RobotHead(self.torsoItem)
self.upperLeftArmItem = RobotLimb(self.torsoItem)
self.lowerLeftArmItem = RobotLimb(self.upperLeftArmItem)
self.upperRightArmItem = RobotLimb(self.torsoItem)
self.lowerRightArmItem = RobotLimb(self.upperRightArmItem)
self.upperRightLegItem = RobotLimb(self.torsoItem)
self.lowerRightLegItem = RobotLimb(self.upperRightLegItem)
self.upperLeftLegItem = RobotLimb(self.torsoItem)
self.lowerLeftLegItem = RobotLimb(self.upperLeftLegItem)
self.timeline = QtCore.QTimeLine()
settings = [
# item position rotation at
# x y time 0 / 1
(self.headItem, 0, -18, 20, -20),
(self.upperLeftArmItem, -15, -10, 190, 180),
(self.lowerLeftArmItem, 30, 0, 50, 10),
(self.upperRightArmItem, 15, -10, 300, 310),
(self.lowerRightArmItem, 30, 0, 0, -70),
(self.upperRightLegItem, 10, 32, 40, 120),
(self.lowerRightLegItem, 30, 0, 10, 50),
(self.upperLeftLegItem, -10, 32, 150, 80),
(self.lowerLeftLegItem, 30, 0, 70, 10),
(self.torsoItem, 0, 0, 5, -20)
]
self.animations = []
for item, pos_x, pos_y, rotation1, rotation2 in settings:
item.setPos(pos_x, pos_y)
animation = QtWidgets.QGraphicsItemAnimation()
animation.setItem(item)
animation.setTimeLine(self.timeline)
animation.setRotationAt(0, rotation1)
animation.setRotationAt(1, rotation2)
self.animations.append(animation)
self.animations[0].setScaleAt(1, 1.1, 1.1)
self.timeline.setUpdateInterval(1000 / 25)
curve = QtCore.QEasingCurve(QtCore.QEasingCurve.SineCurve)
self.timeline.setEasingCurve(curve)
self.timeline.setLoopCount(0)
self.timeline.setDuration(2000)
self.timeline.start()
def __init__(self, parent=None):
super(Window, self).__init__(parent)
self.m_iconSize = QtCore.QSize(64, 64)
self.m_scene = QtWidgets.QGraphicsScene()
m_ui = Ui_Form()
m_ui.setupUi(self)
m_ui.easingCurvePicker.setIconSize(self.m_iconSize)
m_ui.easingCurvePicker.setMinimumHeight(self.m_iconSize.height() + 50)
m_ui.buttonGroup.setId(m_ui.lineRadio, 0)
m_ui.buttonGroup.setId(m_ui.circleRadio, 1)
dummy = QtCore.QEasingCurve()
m_ui.periodSpinBox.setValue(dummy.period())
m_ui.amplitudeSpinBox.setValue(dummy.amplitude())
m_ui.overshootSpinBox.setValue(dummy.overshoot())
m_ui.easingCurvePicker.currentRowChanged.connect(self.curveChanged)
m_ui.buttonGroup.idClicked.connect(self.pathChanged)
m_ui.periodSpinBox.valueChanged.connect(self.periodChanged)
m_ui.amplitudeSpinBox.valueChanged.connect(self.amplitudeChanged)
m_ui.overshootSpinBox.valueChanged.connect(self.overshootChanged)
self.m_ui = m_ui
self.createCurveIcons()
pix = QtGui.QPixmap(':/images/qt-logo.png')
self.m_item = Pixmap(pix)
self.m_scene.addItem(self.m_item.pixmap_item)
self.m_ui.graphicsView.setScene(self.m_scene)
self.m_anim = Animation(self.m_item, b'pos')
self.m_anim.setEasingCurve(QtCore.QEasingCurve.OutBounce)
self.m_ui.easingCurvePicker.setCurrentRow(int(QtCore.QEasingCurve.OutBounce))
self.startAnimation()
def createCurveIcons(self):
pix = QtGui.QPixmap(self.m_iconSize)
painter = QtGui.QPainter()
gradient = QtGui.QLinearGradient(0, 0, 0, self.m_iconSize.height())
gradient.setColorAt(0.0, QtGui.QColor(240, 240, 240))
gradient.setColorAt(1.0, QtGui.QColor(224, 224, 224))
brush = QtGui.QBrush(gradient)
# The original C++ code uses undocumented calls to get the names of the
# different curve types. We do the Python equivalant (but without
# cheating)
curve_types = [(n, c) for n, c in QtCore.QEasingCurve.__dict__.items()
if isinstance(c, QtCore.QEasingCurve.Type) \
and c != QtCore.QEasingCurve.Custom \
and c != QtCore.QEasingCurve.NCurveTypes \
and c != QtCore.QEasingCurve.TCBSpline]
curve_types.sort(key=lambda ct: ct[1])
painter.begin(pix)
for curve_name, curve_type in curve_types:
painter.fillRect(QtCore.QRect(QtCore.QPoint(0, 0), self.m_iconSize), brush)
curve = QtCore.QEasingCurve(curve_type)
painter.setPen(QtGui.QColor(0, 0, 255, 64))
xAxis = self.m_iconSize.height() / 1.5
yAxis = self.m_iconSize.width() / 3.0
painter.drawLine(0, xAxis, self.m_iconSize.width(), xAxis)
painter.drawLine(yAxis, 0, yAxis, self.m_iconSize.height())
curveScale = self.m_iconSize.height() / 2.0
painter.setPen(QtCore.Qt.NoPen)
# Start point.
painter.setBrush(QtCore.Qt.red)
start = QtCore.QPoint(yAxis,
xAxis - curveScale * curve.valueForProgress(0))
painter.drawRect(start.x() - 1, start.y() - 1, 3, 3)
# End point.
painter.setBrush(QtCore.Qt.blue)
end = QtCore.QPoint(yAxis + curveScale,
xAxis - curveScale * curve.valueForProgress(1))
painter.drawRect(end.x() - 1, end.y() - 1, 3, 3)
curvePath = QtGui.QPainterPath()
curvePath.moveTo(QtCore.QPointF(start))
t = 0.0
while t <= 1.0:
to = QtCore.QPointF(yAxis + curveScale * t,
xAxis - curveScale * curve.valueForProgress(t))
curvePath.lineTo(to)
t += 1.0 / curveScale
painter.setRenderHint(QtGui.QPainter.Antialiasing, True)
painter.strokePath(curvePath, QtGui.QColor(32, 32, 32))
painter.setRenderHint(QtGui.QPainter.Antialiasing, False)
item = QtWidgets.QListWidgetItem()
item.setIcon(QtGui.QIcon(pix))
item.setText(curve_name)
self.m_ui.easingCurvePicker.addItem(item)
painter.end()
