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# Copyright (C) 2023 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
from __future__ import annotations
from math import atan, degrees
import numpy as np
from PySide6.QtCore import QObject, QPropertyAnimation, Signal, Slot
from PySide6.QtGui import QFont, QVector3D
from PySide6.QtDataVisualization import (QAbstract3DGraph, QAbstract3DSeries,
QBarDataItem, QBar3DSeries,
QCategory3DAxis, QValue3DAxis,
Q3DCamera, Q3DTheme)
from rainfalldata import RainfallData
# Set up data
TEMP_OULU = np.array([
[-7.4, -2.4, 0.0, 3.0, 8.2, 11.6, 14.7, 15.4, 11.4, 4.2, 2.1, -2.3], # 2015
[-13.4, -3.9, -1.8, 3.1, 10.6, 13.7, 17.8, 13.6, 10.7, 3.5, -3.1, -4.2], # 2016
[-5.7, -6.7, -3.0, -0.1, 4.7, 12.4, 16.1, 14.1, 9.4, 3.0, -0.3, -3.2], # 2017
[-6.4, -11.9, -7.4, 1.9, 11.4, 12.4, 21.5, 16.1, 11.0, 4.4, 2.1, -4.1], # 2018
[-11.7, -6.1, -2.4, 3.9, 7.2, 14.5, 15.6, 14.4, 8.5, 2.0, -3.0, -1.5], # 2019
[-2.1, -3.4, -1.8, 0.6, 7.0, 17.1, 15.6, 15.4, 11.1, 5.6, 1.9, -1.7], # 2020
[-9.6, -11.6, -3.2, 2.4, 7.8, 17.3, 19.4, 14.2, 8.0, 5.2, -2.2, -8.6], # 2021
[-7.3, -6.4, -1.8, 1.3, 8.1, 15.5, 17.6, 17.6, 9.1, 5.4, -1.5, -4.4]], # 2022
np.float64)
TEMP_HELSINKI = np.array([
[-2.0, -0.1, 1.8, 5.1, 9.7, 13.7, 16.3, 17.3, 12.7, 5.4, 4.6, 2.1], # 2015
[-10.3, -0.6, 0.0, 4.9, 14.3, 15.7, 17.7, 16.0, 12.7, 4.6, -1.0, -0.9], # 2016
[-2.9, -3.3, 0.7, 2.3, 9.9, 13.8, 16.1, 15.9, 11.4, 5.0, 2.7, 0.7], # 2017
[-2.2, -8.4, -4.7, 5.0, 15.3, 15.8, 21.2, 18.2, 13.3, 6.7, 2.8, -2.0], # 2018
[-6.2, -0.5, -0.3, 6.8, 10.6, 17.9, 17.5, 16.8, 11.3, 5.2, 1.8, 1.4], # 2019
[1.9, 0.5, 1.7, 4.5, 9.5, 18.4, 16.5, 16.8, 13.0, 8.2, 4.4, 0.9], # 2020
[-4.7, -8.1, -0.9, 4.5, 10.4, 19.2, 20.9, 15.4, 9.5, 8.0, 1.5, -6.7], # 2021
[-3.3, -2.2, -0.2, 3.3, 9.6, 16.9, 18.1, 18.9, 9.2, 7.6, 2.3, -3.4]], # 2022
np.float64)
class GraphModifier(QObject):
shadowQualityChanged = Signal(int)
backgroundEnabledChanged = Signal(bool)
gridEnabledChanged = Signal(bool)
fontChanged = Signal(QFont)
fontSizeChanged = Signal(int)
def __init__(self, bargraph, parent):
super().__init__(parent)
self._graph = bargraph
self._temperatureAxis = QValue3DAxis()
self._yearAxis = QCategory3DAxis()
self._monthAxis = QCategory3DAxis()
self._primarySeries = QBar3DSeries()
self._secondarySeries = QBar3DSeries()
self._celsiusString = "°C"
self._xRotation = float(0)
self._yRotation = float(0)
self._fontSize = 30
self._segments = 4
self._subSegments = 3
self._minval = float(-20)
self._maxval = float(20)
self._barMesh = QAbstract3DSeries.MeshBevelBar
self._smooth = False
self._animationCameraX = QPropertyAnimation()
self._animationCameraY = QPropertyAnimation()
self._animationCameraZoom = QPropertyAnimation()
self._animationCameraTarget = QPropertyAnimation()
self._defaultAngleX = float(0)
self._defaultAngleY = float(0)
self._defaultZoom = float(0)
self._defaultTarget = []
self._customData = None
self._graph.setShadowQuality(QAbstract3DGraph.ShadowQualitySoftMedium)
theme = self._graph.activeTheme()
theme.setBackgroundEnabled(False)
theme.setFont(QFont("Times New Roman", self._fontSize))
theme.setLabelBackgroundEnabled(True)
self._graph.setMultiSeriesUniform(True)
self._months = ["January", "February", "March", "April", "May", "June",
"July", "August", "September", "October", "November",
"December"]
self._years = ["2015", "2016", "2017", "2018", "2019", "2020",
"2021", "2022"]
self._temperatureAxis.setTitle("Average temperature")
self._temperatureAxis.setSegmentCount(self._segments)
self._temperatureAxis.setSubSegmentCount(self._subSegments)
self._temperatureAxis.setRange(self._minval, self._maxval)
self._temperatureAxis.setLabelFormat("%.1f " + self._celsiusString)
self._temperatureAxis.setLabelAutoRotation(30.0)
self._temperatureAxis.setTitleVisible(True)
self._yearAxis.setTitle("Year")
self._yearAxis.setLabelAutoRotation(30.0)
self._yearAxis.setTitleVisible(True)
self._monthAxis.setTitle("Month")
self._monthAxis.setLabelAutoRotation(30.0)
self._monthAxis.setTitleVisible(True)
self._graph.setValueAxis(self._temperatureAxis)
self._graph.setRowAxis(self._yearAxis)
self._graph.setColumnAxis(self._monthAxis)
format = "Oulu - @colLabel @rowLabel: @valueLabel"
self._primarySeries.setItemLabelFormat(format)
self._primarySeries.setMesh(QAbstract3DSeries.MeshBevelBar)
self._primarySeries.setMeshSmooth(False)
format = "Helsinki - @colLabel @rowLabel: @valueLabel"
self._secondarySeries.setItemLabelFormat(format)
self._secondarySeries.setMesh(QAbstract3DSeries.MeshBevelBar)
self._secondarySeries.setMeshSmooth(False)
self._secondarySeries.setVisible(False)
self._graph.addSeries(self._primarySeries)
self._graph.addSeries(self._secondarySeries)
self.changePresetCamera()
self.resetTemperatureData()
# Set up property animations for zooming to the selected bar
camera = self._graph.scene().activeCamera()
self._defaultAngleX = camera.xRotation()
self._defaultAngleY = camera.yRotation()
self._defaultZoom = camera.zoomLevel()
self._defaultTarget = camera.target()
self._animationCameraX.setTargetObject(camera)
self._animationCameraY.setTargetObject(camera)
self._animationCameraZoom.setTargetObject(camera)
self._animationCameraTarget.setTargetObject(camera)
self._animationCameraX.setPropertyName(b"xRotation")
self._animationCameraY.setPropertyName(b"yRotation")
self._animationCameraZoom.setPropertyName(b"zoomLevel")
self._animationCameraTarget.setPropertyName(b"target")
duration = 1700
self._animationCameraX.setDuration(duration)
self._animationCameraY.setDuration(duration)
self._animationCameraZoom.setDuration(duration)
self._animationCameraTarget.setDuration(duration)
# The zoom always first zooms out above the graph and then zooms in
zoomOutFraction = 0.3
self._animationCameraX.setKeyValueAt(zoomOutFraction, 0.0)
self._animationCameraY.setKeyValueAt(zoomOutFraction, 90.0)
self._animationCameraZoom.setKeyValueAt(zoomOutFraction, 50.0)
self._animationCameraTarget.setKeyValueAt(zoomOutFraction,
QVector3D(0, 0, 0))
self._customData = RainfallData()
def resetTemperatureData(self):
# Create data arrays
dataSet = []
dataSet2 = []
for year in range(0, len(self._years)):
# Create a data row
dataRow = []
dataRow2 = []
for month in range(0, len(self._months)):
# Add data to the row
item = QBarDataItem()
item.setValue(TEMP_OULU[year][month])
dataRow.append(item)
item = QBarDataItem()
item.setValue(TEMP_HELSINKI[year][month])
dataRow2.append(item)
# Add the row to the set
dataSet.append(dataRow)
dataSet2.append(dataRow2)
# Add data to the data proxy (the data proxy assumes ownership of it)
self._primarySeries.dataProxy().resetArray(dataSet, self._years, self._months)
self._secondarySeries.dataProxy().resetArray(dataSet2, self._years, self._months)
@Slot(int)
def changeRange(self, range):
if range >= len(self._years):
self._yearAxis.setRange(0, len(self._years) - 1)
else:
self._yearAxis.setRange(range, range)
@Slot(int)
def changeStyle(self, style):
comboBox = self.sender()
if comboBox:
self._barMesh = comboBox.itemData(style)
self._primarySeries.setMesh(self._barMesh)
self._secondarySeries.setMesh(self._barMesh)
self._customData.customSeries().setMesh(self._barMesh)
def changePresetCamera(self):
self._animationCameraX.stop()
self._animationCameraY.stop()
self._animationCameraZoom.stop()
self._animationCameraTarget.stop()
# Restore camera target in case animation has changed it
self._graph.scene().activeCamera().setTarget(QVector3D(0.0, 0.0, 0.0))
self._preset = Q3DCamera.CameraPresetFront.value
camera = self._graph.scene().activeCamera()
camera.setCameraPreset(Q3DCamera.CameraPreset(self._preset))
self._preset += 1
if self._preset > Q3DCamera.CameraPresetDirectlyBelow.value:
self._preset = Q3DCamera.CameraPresetFrontLow.value
@Slot(int)
def changeTheme(self, theme):
currentTheme = self._graph.activeTheme()
currentTheme.setType(Q3DTheme.Theme(theme))
self.backgroundEnabledChanged.emit(currentTheme.isBackgroundEnabled())
self.gridEnabledChanged.emit(currentTheme.isGridEnabled())
self.fontChanged.emit(currentTheme.font())
self.fontSizeChanged.emit(currentTheme.font().pointSize())
def changeLabelBackground(self):
theme = self._graph.activeTheme()
theme.setLabelBackgroundEnabled(not theme.isLabelBackgroundEnabled())
@Slot(int)
def changeSelectionMode(self, selectionMode):
comboBox = self.sender()
if comboBox:
flags = comboBox.itemData(selectionMode)
self._graph.setSelectionMode(QAbstract3DGraph.SelectionFlags(flags))
def changeFont(self, font):
newFont = font
self._graph.activeTheme().setFont(newFont)
def changeFontSize(self, fontsize):
self._fontSize = fontsize
font = self._graph.activeTheme().font()
font.setPointSize(self._fontSize)
self._graph.activeTheme().setFont(font)
@Slot(QAbstract3DGraph.ShadowQuality)
def shadowQualityUpdatedByVisual(self, sq):
# Updates the UI component to show correct shadow quality
self.shadowQualityChanged.emit(sq.value)
@Slot(int)
def changeLabelRotation(self, rotation):
self._temperatureAxis.setLabelAutoRotation(float(rotation))
self._monthAxis.setLabelAutoRotation(float(rotation))
self._yearAxis.setLabelAutoRotation(float(rotation))
@Slot(bool)
def setAxisTitleVisibility(self, enabled):
self._temperatureAxis.setTitleVisible(enabled)
self._monthAxis.setTitleVisible(enabled)
self._yearAxis.setTitleVisible(enabled)
@Slot(bool)
def setAxisTitleFixed(self, enabled):
self._temperatureAxis.setTitleFixed(enabled)
self._monthAxis.setTitleFixed(enabled)
self._yearAxis.setTitleFixed(enabled)
@Slot()
def zoomToSelectedBar(self):
self._animationCameraX.stop()
self._animationCameraY.stop()
self._animationCameraZoom.stop()
self._animationCameraTarget.stop()
camera = self._graph.scene().activeCamera()
currentX = camera.xRotation()
currentY = camera.yRotation()
currentZoom = camera.zoomLevel()
currentTarget = camera.target()
self._animationCameraX.setStartValue(currentX)
self._animationCameraY.setStartValue(currentY)
self._animationCameraZoom.setStartValue(currentZoom)
self._animationCameraTarget.setStartValue(currentTarget)
selectedBar = (self._graph.selectedSeries().selectedBar()
if self._graph.selectedSeries()
else QBar3DSeries.invalidSelectionPosition())
if selectedBar != QBar3DSeries.invalidSelectionPosition():
# Normalize selected bar position within axis range to determine
# target coordinates
endTarget = QVector3D()
xMin = self._graph.columnAxis().min()
xRange = self._graph.columnAxis().max() - xMin
zMin = self._graph.rowAxis().min()
zRange = self._graph.rowAxis().max() - zMin
endTarget.setX((selectedBar.y() - xMin) / xRange * 2.0 - 1.0)
endTarget.setZ((selectedBar.x() - zMin) / zRange * 2.0 - 1.0)
# Rotate the camera so that it always points approximately to the
# graph center
endAngleX = 90.0 - degrees(atan(float(endTarget.z() / endTarget.x())))
if endTarget.x() > 0.0:
endAngleX -= 180.0
proxy = self._graph.selectedSeries().dataProxy()
barValue = proxy.itemAt(selectedBar.x(), selectedBar.y()).value()
endAngleY = 30.0 if barValue >= 0.0 else -30.0
if self._graph.valueAxis().reversed():
endAngleY *= -1.0
self._animationCameraX.setEndValue(float(endAngleX))
self._animationCameraY.setEndValue(endAngleY)
self._animationCameraZoom.setEndValue(250)
self._animationCameraTarget.setEndValue(endTarget)
else:
# No selected bar, so return to the default view
self._animationCameraX.setEndValue(self._defaultAngleX)
self._animationCameraY.setEndValue(self._defaultAngleY)
self._animationCameraZoom.setEndValue(self._defaultZoom)
self._animationCameraTarget.setEndValue(self._defaultTarget)
self._animationCameraX.start()
self._animationCameraY.start()
self._animationCameraZoom.start()
self._animationCameraTarget.start()
@Slot(bool)
def setDataModeToWeather(self, enabled):
if enabled:
self.changeDataMode(False)
@Slot(bool)
def setDataModeToCustom(self, enabled):
if enabled:
self.changeDataMode(True)
def changeShadowQuality(self, quality):
sq = QAbstract3DGraph.ShadowQuality(quality)
self._graph.setShadowQuality(sq)
self.shadowQualityChanged.emit(quality)
def rotateX(self, rotation):
self._xRotation = rotation
camera = self._graph.scene().activeCamera()
camera.setCameraPosition(self._xRotation, self._yRotation)
def rotateY(self, rotation):
self._yRotation = rotation
camera = self._graph.scene().activeCamera()
camera.setCameraPosition(self._xRotation, self._yRotation)
def setBackgroundEnabled(self, enabled):
self._graph.activeTheme().setBackgroundEnabled(bool(enabled))
def setGridEnabled(self, enabled):
self._graph.activeTheme().setGridEnabled(bool(enabled))
def setSmoothBars(self, smooth):
self._smooth = bool(smooth)
self._primarySeries.setMeshSmooth(self._smooth)
self._secondarySeries.setMeshSmooth(self._smooth)
self._customData.customSeries().setMeshSmooth(self._smooth)
def setSeriesVisibility(self, enabled):
self._secondarySeries.setVisible(bool(enabled))
def setReverseValueAxis(self, enabled):
self._graph.valueAxis().setReversed(enabled)
def setReflection(self, enabled):
self._graph.setReflection(enabled)
def changeDataMode(self, customData):
# Change between weather data and data from custom proxy
if customData:
self._graph.removeSeries(self._primarySeries)
self._graph.removeSeries(self._secondarySeries)
self._graph.addSeries(self._customData.customSeries())
self._graph.setValueAxis(self._customData.valueAxis())
self._graph.setRowAxis(self._customData.rowAxis())
self._graph.setColumnAxis(self._customData.colAxis())
else:
self._graph.removeSeries(self._customData.customSeries())
self._graph.addSeries(self._primarySeries)
self._graph.addSeries(self._secondarySeries)
self._graph.setValueAxis(self._temperatureAxis)
self._graph.setRowAxis(self._yearAxis)
self._graph.setColumnAxis(self._monthAxis)
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