3D图表例子

This commit is contained in:
Irony 2019-10-04 23:39:16 +08:00
parent 686fe5a4d0
commit 61560e9d12
8 changed files with 2912 additions and 1 deletions

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Created on 2019/10/4
@author: Irony
@site: https://pyqt5.com , https://github.com/892768447
@email: 892768447@qq.com
@file: MagneticOfSun
@description:
"""
#############################################################################
##
## Copyright (C) 2014 Riverbank Computing Limited.
## Copyright (C) 2014 Digia Plc
## All rights reserved.
## For any questions to Digia, please use contact form at http://qt.digia.com
##
## This file is part of the QtDataVisualization module.
##
## Licensees holding valid Qt Enterprise licenses may use this file in
## accordance with the Qt Enterprise License Agreement provided with the
## Software or, alternatively, in accordance with the terms contained in
## a written agreement between you and Digia.
##
## If you have questions regarding the use of this file, please use
## contact form at http://qt.digia.com
##
#############################################################################
import math
from PyQt5.QtCore import QFileInfo, QObject, QSize, Qt, QTimer, QLocale
from PyQt5.QtDataVisualization import (Q3DCamera, Q3DScatter, Q3DTheme,
QAbstract3DGraph, QAbstract3DSeries, QScatter3DSeries,
QScatterDataItem)
from PyQt5.QtGui import QColor, QLinearGradient, QQuaternion, QVector3D
from PyQt5.QtWidgets import (QApplication, QHBoxLayout, QLabel, QPushButton,
QSlider, QSizePolicy, QVBoxLayout, QWidget)
country = QLocale.system().country()
if country in (QLocale.China, QLocale.HongKong, QLocale.Taiwan):
Tr = {
'Item rotations example - Magnetic field of the sun': '项目旋转示例-太阳磁场',
'Toggle animation': '开启/关闭 动画',
'Toggle Sun': '显示/隐藏 太阳',
'Field Lines (1 - 128):': '磁场线条数(1 - 128)',
'Arrows per line (8 - 32):': '箭头数(8 - 32)'
}
else:
Tr = {}
class ScatterDataModifier(QObject):
verticalRange = 8.0
horizontalRange = verticalRange
ellipse_a = horizontalRange / 3.0
ellipse_b = verticalRange
doublePi = math.pi * 2.0
radiansToDegrees = 360.0 / doublePi
animationFrames = 30.0 # 动画帧数
def __init__(self, scatter):
super(ScatterDataModifier, self).__init__()
mesh_dir = QFileInfo(__file__).absolutePath() + '/Data/mesh'
self.m_graph = scatter # Q3DScatter 对象实例
self.m_rotationTimer = QTimer()
self.m_fieldLines = 12 # 初始磁场线数量
self.m_arrowsPerLine = 16 # 初始箭头数
self.m_magneticField = QScatter3DSeries() # 磁场线三维散点图
self.m_sun = QScatter3DSeries() # 太阳三维散点图
self.m_angleOffset = 0.0 # 角度偏移
self.m_angleStep = self.doublePi / self.m_arrowsPerLine / self.animationFrames
# 设置阴影质量
self.m_graph.setShadowQuality(QAbstract3DGraph.ShadowQualityNone)
# 设置当前场景中的激活的相机预设值
self.m_graph.scene().activeCamera().setCameraPreset(
Q3DCamera.CameraPresetFront)
# Magnetic field lines use custom narrow arrow.
# 磁力线使用自定义窄箭头。
self.m_magneticField.setItemSize(0.2)
self.m_magneticField.setMesh(QAbstract3DSeries.MeshUserDefined)
self.m_magneticField.setUserDefinedMesh(mesh_dir + '/narrowarrow.obj')
# 设置渐变颜色
fieldGradient = QLinearGradient(0, 0, 16, 1024)
fieldGradient.setColorAt(0.0, Qt.black)
fieldGradient.setColorAt(1.0, Qt.white)
self.m_magneticField.setBaseGradient(fieldGradient)
self.m_magneticField.setColorStyle(Q3DTheme.ColorStyleRangeGradient)
# For 'sun' we use a custom large sphere.
# 使用一个自定义的球体代表太阳
self.m_sun.setItemSize(0.2)
self.m_sun.setName("Sun")
self.m_sun.setItemLabelFormat("@seriesName")
self.m_sun.setMesh(QAbstract3DSeries.MeshUserDefined)
self.m_sun.setUserDefinedMesh(mesh_dir + '/largesphere.obj')
self.m_sun.setBaseColor(QColor(0xff, 0xbb, 0x00))
self.m_sun.dataProxy().addItem(QScatterDataItem(QVector3D()))
self.m_graph.addSeries(self.m_magneticField)
self.m_graph.addSeries(self.m_sun)
# Configure the axes according to the data.
# 设置x轴的范围值
self.m_graph.axisX().setRange(-self.horizontalRange,
self.horizontalRange)
# 设置y轴的范围值
self.m_graph.axisY().setRange(-self.verticalRange, self.verticalRange)
# 设置z轴的范围值
self.m_graph.axisZ().setRange(-self.horizontalRange,
self.horizontalRange)
# x和z轴上的段数
# 这表明绘制了多少标签。要绘制的网格线的数量使用公式计算segments * subsegments + 1。预设默认值为5。该值不能低于1。
self.m_graph.axisX().setSegmentCount(self.horizontalRange)
self.m_graph.axisZ().setSegmentCount(self.horizontalRange)
self.m_rotationTimer.timeout.connect(self.triggerRotation)
self.toggleRotation()
self.generateData()
def generateData(self):
# 生成模拟数据
magneticFieldArray = []
for i in range(self.m_fieldLines):
horizontalAngle = (self.doublePi * i) / self.m_fieldLines
xCenter = self.ellipse_a * math.cos(horizontalAngle)
zCenter = self.ellipse_a * math.sin(horizontalAngle)
# Rotate - arrow is always tangential to the origin.
# 旋转-箭头始终与原点相切。
yRotation = QQuaternion.fromAxisAndAngle(0.0, 1.0, 0.0,
horizontalAngle * self.radiansToDegrees)
for j in range(self.m_arrowsPerLine):
# Calculate the point on the ellipse centered on the origin and
# 计算椭圆上以原点为中心的点
# parallel to the x-axis.
# 平行于X轴。
verticalAngle = ((self.doublePi * j) / self.m_arrowsPerLine) + self.m_angleOffset
xUnrotated = self.ellipse_a * math.cos(verticalAngle)
y = self.ellipse_b * math.sin(verticalAngle)
# Rotate the ellipse around the y-axis.
# 围绕Y轴旋转椭圆。
xRotated = xUnrotated * math.cos(horizontalAngle)
zRotated = xUnrotated * math.sin(horizontalAngle)
# Add the offset.
# 添加偏移量。
x = xCenter + xRotated
z = zCenter + zRotated
zRotation = QQuaternion.fromAxisAndAngle(0.0, 0.0, 1.0,
verticalAngle * self.radiansToDegrees)
totalRotation = yRotation * zRotation
itm = QScatterDataItem(QVector3D(x, y, z), totalRotation)
magneticFieldArray.append(itm)
if self.m_graph.selectedSeries() is self.m_magneticField:
self.m_graph.clearSelection()
self.m_magneticField.dataProxy().resetArray(magneticFieldArray)
def setFieldLines(self, lines):
self.m_fieldLines = lines
self.generateData()
def setArrowsPerLine(self, arrows):
self.m_arrowsPerLine = arrows
self.m_angleOffset = 0.0
self.m_angleStep = self.doublePi / self.m_arrowsPerLine / self.animationFrames
self.generateData()
def triggerRotation(self):
self.m_angleOffset += self.m_angleStep
self.generateData()
def toggleSun(self):
self.m_sun.setVisible(not self.m_graph.seriesList()[1].isVisible())
def toggleRotation(self):
if self.m_rotationTimer.isActive():
self.m_rotationTimer.stop()
else:
self.m_rotationTimer.start(15)
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
graph = Q3DScatter()
container = QWidget.createWindowContainer(graph)
screenSize = graph.screen().size()
container.setMinimumSize(
QSize(screenSize.width() / 2, screenSize.height() / 1.5))
container.setMaximumSize(screenSize)
container.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
container.setFocusPolicy(Qt.StrongFocus)
widget = QWidget()
hLayout = QHBoxLayout(widget)
vLayout = QVBoxLayout()
hLayout.addWidget(container, 1)
hLayout.addLayout(vLayout)
widget.setWindowTitle(Tr.get("Item rotations example - Magnetic field of the sun",
"Item rotations example - Magnetic field of the sun"))
toggleRotationButton = QPushButton(Tr.get("Toggle animation", "Toggle animation"))
toggleSunButton = QPushButton(Tr.get("Toggle Sun", "Toggle Sun"))
fieldLinesSlider = QSlider(Qt.Horizontal)
fieldLinesSlider.setTickInterval(1)
fieldLinesSlider.setMinimum(1)
fieldLinesSlider.setValue(12)
fieldLinesSlider.setMaximum(128)
arrowsSlider = QSlider(Qt.Horizontal)
arrowsSlider.setTickInterval(1)
arrowsSlider.setMinimum(8)
arrowsSlider.setValue(16)
arrowsSlider.setMaximum(32)
vLayout.addWidget(toggleRotationButton)
vLayout.addWidget(toggleSunButton)
vLayout.addWidget(QLabel(Tr.get("Field Lines (1 - 128):", "Field Lines (1 - 128):")))
vLayout.addWidget(fieldLinesSlider)
vLayout.addWidget(QLabel(Tr.get("Arrows per line (8 - 32):", "Arrows per line (8 - 32):")))
vLayout.addWidget(arrowsSlider, 1, Qt.AlignTop)
modifier = ScatterDataModifier(graph)
toggleRotationButton.clicked.connect(modifier.toggleRotation)
toggleSunButton.clicked.connect(modifier.toggleSun)
fieldLinesSlider.valueChanged.connect(modifier.setFieldLines)
arrowsSlider.valueChanged.connect(modifier.setArrowsPerLine)
widget.show()
sys.exit(app.exec_())

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@ -2,8 +2,20 @@
- 目录
- [柱状图3D](#1柱状图3D)
- [太阳磁场线](#2太阳磁场线)
- [余弦波3D](#3余弦波3D)
## 1、柱状图3D
[运行 BarsVisualization.py](BarsVisualization.py)
![BarsVisualization](ScreenShot/BarsVisualization.gif)
## 2、太阳磁场线
[运行 MagneticOfSun.py](MagneticOfSun.py)
![MagneticOfSun](ScreenShot/MagneticOfSun.gif)
## 3、余弦波3D
[运行 ScatterVisualization.py](ScatterVisualization.py)
![ScatterVisualization](ScreenShot/ScatterVisualization.gif)

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@ -0,0 +1,295 @@
#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Created on 2019/10/4
@author: Irony
@site: https://pyqt5.com , https://github.com/892768447
@email: 892768447@qq.com
@file: ScatterVisualization
@description:
"""
#############################################################################
##
## Copyright (C) 2014 Riverbank Computing Limited.
## Copyright (C) 2014 Digia Plc
## All rights reserved.
## For any questions to Digia, please use contact form at http://qt.digia.com
##
## This file is part of the QtDataVisualization module.
##
## Licensees holding valid Qt Enterprise licenses may use this file in
## accordance with the Qt Enterprise License Agreement provided with the
## Software or, alternatively, in accordance with the terms contained in
## a written agreement between you and Digia.
##
## If you have questions regarding the use of this file, please use
## contact form at http://qt.digia.com
##
#############################################################################
import math
from PyQt5.QtCore import pyqtSignal, QObject, QSize, Qt, QLocale
from PyQt5.QtDataVisualization import (Q3DCamera, Q3DTheme, Q3DScatter,
QAbstract3DGraph, QAbstract3DSeries, QScatter3DSeries,
QScatterDataItem, QScatterDataProxy)
from PyQt5.QtGui import QFont, QVector3D
from PyQt5.QtWidgets import (QApplication, QCheckBox, QComboBox, QFontComboBox,
QHBoxLayout, QLabel, QPushButton, QSizePolicy, QVBoxLayout, QWidget)
country = QLocale.system().country()
if country in (QLocale.China, QLocale.HongKong, QLocale.Taiwan):
Tr = {
'A Cosine Wave': '余弦波',
'Change label style': '更改label样式',
'Smooth dots': '平滑圆点',
'Change camera preset': '更改相机预设',
'Show background': '显示背景',
'Show grid': '显示网格',
'Change dot style': '更改点样式',
'Change theme': '更改主题',
'Adjust shadow quality': '调整阴影质量',
'Change font': '更改字体'
}
else:
Tr = {}
class ScatterDataModifier(QObject):
numberOfItems = 3600
curveDivider = 3.0
lowerNumberOfItems = 900
lowerCurveDivider = 0.75
backgroundEnabledChanged = pyqtSignal(bool)
gridEnabledChanged = pyqtSignal(bool)
shadowQualityChanged = pyqtSignal(int)
fontChanged = pyqtSignal(QFont)
def __init__(self, scatter):
super(ScatterDataModifier, self).__init__()
self.m_graph = scatter # Q3DScatter实例
self.m_fontSize = 40.0
self.m_style = QAbstract3DSeries.MeshSphere
self.m_smooth = True
self.m_itemCount = self.lowerNumberOfItems
self.m_curveDivider = self.lowerCurveDivider
# 设置当前主题类型
self.m_graph.activeTheme().setType(Q3DTheme.ThemeEbony)
# 设置当前主题的字体
font = self.m_graph.activeTheme().font()
font.setPointSize(self.m_fontSize)
self.m_graph.activeTheme().setFont(font)
# 设置阴影质量
self.m_graph.setShadowQuality(QAbstract3DGraph.ShadowQualitySoftLow)
self.m_graph.scene().activeCamera().setCameraPreset(
Q3DCamera.CameraPresetFront)
proxy = QScatterDataProxy()
series = QScatter3DSeries(proxy)
series.setItemLabelFormat(
"@xTitle: @xLabel @yTitle: @yLabel @zTitle: @zLabel")
series.setMeshSmooth(self.m_smooth)
self.m_graph.addSeries(series)
self.addData()
def addData(self):
# 添加数据
self.m_graph.axisX().setTitle("X")
self.m_graph.axisY().setTitle("Y")
self.m_graph.axisZ().setTitle("Z")
dataArray = []
limit = math.sqrt(self.m_itemCount) / 2.0
i = -limit
while i < limit:
j = -limit
while j < limit:
itm = QScatterDataItem(
QVector3D(i + 0.5,
math.cos(
math.radians((i * j) / self.m_curveDivider)),
j + 0.5))
dataArray.append(itm)
j += 1.0
i += 1.0
self.m_graph.seriesList()[0].dataProxy().resetArray(dataArray)
def changeStyle(self, style):
comboBox = self.sender()
if isinstance(comboBox, QComboBox):
self.m_style = QAbstract3DSeries.Mesh(comboBox.itemData(style))
self.m_graph.seriesList()[0].setMesh(self.m_style)
def setSmoothDots(self, smooth):
self.m_smooth = bool(smooth)
self.m_graph.seriesList()[0].setMeshSmooth(self.m_smooth)
def changeTheme(self, theme):
currentTheme = self.m_graph.activeTheme()
currentTheme.setType(Q3DTheme.Theme(theme))
self.backgroundEnabledChanged.emit(currentTheme.isBackgroundEnabled())
self.gridEnabledChanged.emit(currentTheme.isGridEnabled())
self.fontChanged.emit(currentTheme.font())
preset = int(Q3DCamera.CameraPresetFrontLow)
def changePresetCamera(self):
self.m_graph.scene().activeCamera().setCameraPreset(
Q3DCamera.CameraPreset(self.preset))
self.preset += 1
if self.preset > Q3DCamera.CameraPresetDirectlyBelow:
self.preset = int(Q3DCamera.CameraPresetFrontLow)
def changeLabelStyle(self):
self.m_graph.activeTheme().setLabelBackgroundEnabled(
not self.m_graph.activeTheme().isLabelBackgroundEnabled())
def changeFont(self, font):
newFont = QFont(font)
newFont.setPointSizeF(self.m_fontSize)
self.m_graph.activeTheme().setFont(newFont)
def shadowQualityUpdatedByVisual(self, sq):
self.shadowQualityChanged.emit(int(sq))
def changeShadowQuality(self, quality):
sq = QAbstract3DGraph.ShadowQuality(quality)
self.m_graph.setShadowQuality(sq)
def setBackgroundEnabled(self, enabled):
self.m_graph.activeTheme().setBackgroundEnabled(enabled)
def setGridEnabled(self, enabled):
self.m_graph.activeTheme().setGridEnabled(enabled)
def toggleItemCount(self):
if self.m_itemCount == self.numberOfItems:
self.m_itemCount = self.lowerNumberOfItems
self.m_curveDivider = self.lowerCurveDivider
else:
self.m_itemCount = self.numberOfItems
self.m_curveDivider = self.curveDivider
self.m_graph.seriesList()[0].dataProxy().resetArray(None)
self.addData()
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
graph = Q3DScatter()
container = QWidget.createWindowContainer(graph)
screenSize = graph.screen().size()
container.setMinimumSize(
QSize(screenSize.width() / 2, screenSize.height() / 1.5))
container.setMaximumSize(screenSize)
container.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
container.setFocusPolicy(Qt.StrongFocus)
widget = QWidget()
hLayout = QHBoxLayout(widget)
vLayout = QVBoxLayout()
hLayout.addWidget(container, 1)
hLayout.addLayout(vLayout)
widget.setWindowTitle(Tr.get("A Cosine Wave", "A Cosine Wave"))
themeList = QComboBox()
themeList.addItem("Qt")
themeList.addItem("Primary Colors")
themeList.addItem("Digia")
themeList.addItem("Stone Moss")
themeList.addItem("Army Blue")
themeList.addItem("Retro")
themeList.addItem("Ebony")
themeList.addItem("Isabelle")
themeList.setCurrentIndex(6)
labelButton = QPushButton(Tr.get("Change label style", "Change label style"))
smoothCheckBox = QCheckBox(Tr.get("Smooth dots", "Smooth dots"), checked=True)
itemStyleList = QComboBox()
itemStyleList.addItem("Sphere", QAbstract3DSeries.MeshSphere)
itemStyleList.addItem("Cube", QAbstract3DSeries.MeshCube)
itemStyleList.addItem("Minimal", QAbstract3DSeries.MeshMinimal)
itemStyleList.addItem("Point", QAbstract3DSeries.MeshPoint)
itemStyleList.setCurrentIndex(0)
cameraButton = QPushButton(Tr.get("Change camera preset", "Change camera preset"))
itemCountButton = QPushButton(Tr.get("Toggle item count", "Toggle item count"))
backgroundCheckBox = QCheckBox(Tr.get("Show background", "Show background"), checked=True)
gridCheckBox = QCheckBox(Tr.get("Show grid", "Show grid"), checked=True)
shadowQuality = QComboBox()
shadowQuality.addItem("None")
shadowQuality.addItem("Low")
shadowQuality.addItem("Medium")
shadowQuality.addItem("High")
shadowQuality.addItem("Low Soft")
shadowQuality.addItem("Medium Soft")
shadowQuality.addItem("High Soft")
shadowQuality.setCurrentIndex(4)
fontList = QFontComboBox()
fontList.setCurrentFont(QFont('Arial'))
vLayout.addWidget(labelButton, 0, Qt.AlignTop)
vLayout.addWidget(cameraButton, 0, Qt.AlignTop)
vLayout.addWidget(itemCountButton, 0, Qt.AlignTop)
vLayout.addWidget(backgroundCheckBox)
vLayout.addWidget(gridCheckBox)
vLayout.addWidget(smoothCheckBox, 0, Qt.AlignTop)
vLayout.addWidget(QLabel(Tr.get("Change dot style", "Change dot style")))
vLayout.addWidget(itemStyleList)
vLayout.addWidget(QLabel(Tr.get("Change theme", "Change theme")))
vLayout.addWidget(themeList)
vLayout.addWidget(QLabel(Tr.get("Adjust shadow quality", "Adjust shadow quality")))
vLayout.addWidget(shadowQuality)
vLayout.addWidget(QLabel(Tr.get("Change font", "Change font")))
vLayout.addWidget(fontList, 1, Qt.AlignTop)
modifier = ScatterDataModifier(graph)
cameraButton.clicked.connect(modifier.changePresetCamera)
labelButton.clicked.connect(modifier.changeLabelStyle)
itemCountButton.clicked.connect(modifier.toggleItemCount)
backgroundCheckBox.stateChanged.connect(modifier.setBackgroundEnabled)
gridCheckBox.stateChanged.connect(modifier.setGridEnabled)
smoothCheckBox.stateChanged.connect(modifier.setSmoothDots)
modifier.backgroundEnabledChanged.connect(backgroundCheckBox.setChecked)
modifier.gridEnabledChanged.connect(gridCheckBox.setChecked)
itemStyleList.currentIndexChanged.connect(modifier.changeStyle)
themeList.currentIndexChanged.connect(modifier.changeTheme)
shadowQuality.currentIndexChanged.connect(modifier.changeShadowQuality)
modifier.shadowQualityChanged.connect(shadowQuality.setCurrentIndex)
graph.shadowQualityChanged.connect(modifier.shadowQualityUpdatedByVisual)
fontList.currentFontChanged.connect(modifier.changeFont)
modifier.fontChanged.connect(fontList.setCurrentFont)
widget.show()
sys.exit(app.exec_())

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@ -170,6 +170,8 @@ https://pyqt5.com 社区是专门针对PyQt5学习和提升开设的博客网站
- [QtDataVisualization](QtDataVisualization)
- [柱状图3D](QtDataVisualization/BarsVisualization.py)
- [太阳磁场线](QtDataVisualization/MagneticOfSun.py)
- [余弦波3D](QtDataVisualization/ScatterVisualization.py)
- [PyQtGraph](PyQtGraph)
- [鼠标获取X轴坐标](PyQtGraph/mouseFlow.py)