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Widget_vtk.py
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import sys
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
import vtk
from vtk.util.vtkImageImportFromArray import vtkImageImportFromArray
from vtk.qt.QVTKRenderWindowInteractor import QVTKRenderWindowInteractor
import numpy as np
import SimpleITK as sitk
class widget_vtk(QWidget):
def __init__(self):
super().__init__()
self.resize(600, 600)
self.gridlayout = QGridLayout(self)
self.gridlayout.setContentsMargins(0, 0, 0, 0)
self.vtkWidget = QVTKRenderWindowInteractor(self)
self.vtkWidget.resize(600, 600)
self.gridlayout.addWidget(self.vtkWidget, 0, 0, 1, 1)
self.rendererWin = self.vtkWidget.GetRenderWindow()
self.interactor = self.rendererWin.GetInteractor() # 获取渲染窗口的
self.interactor.Initialize()
self.interactor.Start()
self.renderer = vtk.vtkRenderer()
self.rendererWin.AddRenderer(self.renderer) # 把渲染器添加窗口上
# 背景颜色
colors = vtk.vtkNamedColors()
colors.SetColor('BkgColor', [126, 151, 177, 255])
self.renderer.SetBackground(colors.GetColor3d('BkgColor'))
# 私有变量
self.volume_heartMark = None # 心脏掩码
self.actor_outline = None
self.actor_point_LVA = None
self.actor_point_RVA = None
self.actor_point_AV = None
self.actor_point_TV = None
self.actor_point_MV = None
self.actor_point_PV = None
self.planes = {
}
self.actor_SAS_plane = None
self.actor_VLA_plane = None
self.actor_LVOT_plane = None
self.actor_4CH_plane = None
self.actor_RVOT_plane = None
self.actor_plane = None
# 添加 坐标轴
def drawAxis(self):
axesActor = vtk.vtkAxesActor()
self.axesWidget = vtk.vtkOrientationMarkerWidget()
self.axesWidget.SetOrientationMarker(axesActor)
self.axesWidget.SetInteractor(self.interactor)
self.axesWidget.On()
self.axesWidget.SetInteractive(0)
def drawHeartMark(self, heartMark, spacing, spinCenter):
vtk_arr = vtkImageImportFromArray() # 创建一个空的vtk类-----vtkImageImportFromArray
vtk_arr.SetArray(heartMark) # 把arr塞到vtkImageImportFromArray（arr）
vtk_arr.SetDataSpacing(tuple(spacing)) # 设置spacing
# 坐标偏移
vtk_arr.SetDataOrigin(tuple(spinCenter))
vtk_arr.Update()
# 不透明度传输函数---放在tfun
tfun = vtk.vtkPiecewiseFunction() # 不透明度传输函数---放在tfun
tfun.AddPoint(0, 0)
for value in [205, 420, 500, 550, 600, 820, 850]:
tfun.AddPoint(value, 0.06)
# 颜色传输函数---放在ctfun
colors = np.load('colors.npy')
colors = colors/255 * 2
# 颜色传输函数---放在ctfun
ctfun = vtk.vtkColorTransferFunction() # 颜色传输函数---放在ctfun
for value, color in zip([205, 420, 500, 550, 600, 820, 850], colors):
ctfun.AddRGBPoint(value, color[0], color[1], color[2])
# 绘制心脏
volumeMapper = vtk.vtkGPUVolumeRayCastMapper() # 映射器volumnMapper使用vtk的管线投影算法
volumeMapper.SetInputData(vtk_arr.GetOutput()) # 向映射器中输入数据：shifter(预处理之后的数据)
volumeProperty = vtk.vtkVolumeProperty() # 创建vtk属性存放器,向属性存放器中存放颜色和透明度
volumeProperty.SetColor(ctfun)
volumeProperty.SetScalarOpacity(tfun)
volumeProperty.SetInterpolationTypeToLinear() # ???
volumeProperty.ShadeOn()
# 创建演员
volume = vtk.vtkVolume() # 演员
volume.SetMapper(volumeMapper)
volume.SetProperty(volumeProperty)
self.renderer.RemoveVolume(self.volume_heartMark)
self.volume_heartMark = volume
self.renderer.AddVolume(self.volume_heartMark)
# 绘制轮廓
# outline = vtk.vtkOutlineFilter()
# outline.SetInputConnection(vtk_arr.GetOutputPort())
#
# outlineMapper = vtk.vtkPolyDataMapper()
# outlineMapper.SetInputConnection(outline.GetOutputPort())
#
# outlineActor = vtk.vtkActor()
# outlineActor.SetMapper(outlineMapper)
#
# self.renderer.RemoveActor(self.actor_outline)
# self.actor_outline = outlineActor
# self.renderer.AddActor(self.actor_outline)
self.rendererWin.Render()
# 心尖
def drawPoint_LVA(self, center):
sphereSource = vtk.vtkSphereSource()
sphereSource.SetCenter(center)
sphereSource.SetRadius(2.0)
sphereSource.Update()
# Create a mapper and actor
mapper = vtk.vtkPolyDataMapper()
mapper.SetInputConnection(sphereSource.GetOutputPort())
actor = vtk.vtkActor()
actor.SetMapper(mapper)
colors = vtk.vtkNamedColors()
actor.GetProperty().SetColor(colors.GetColor3d("red"))
self.renderer.RemoveActor(self.actor_point_LVA)
self.actor_point_LVA = actor
self.renderer.AddActor(self.actor_point_LVA)
self.rendererWin.Render()
def drawPoint_RVA(self, center):
sphereSource = vtk.vtkSphereSource()
sphereSource.SetCenter(center)
sphereSource.SetRadius(2.0)
sphereSource.Update()
# Create a mapper and actor
mapper = vtk.vtkPolyDataMapper()
mapper.SetInputConnection(sphereSource.GetOutputPort())
actor = vtk.vtkActor()
actor.SetMapper(mapper)
colors = vtk.vtkNamedColors()
actor.GetProperty().SetColor(colors.GetColor3d("orange"))
self.renderer.RemoveActor(self.actor_point_RVA)
self.actor_point_RVA = actor
self.renderer.AddActor(self.actor_point_RVA)
self.rendererWin.Render()
def drawPoint_AV(self, center):
sphereSource = vtk.vtkSphereSource()
sphereSource.SetCenter(center)
sphereSource.SetRadius(2.0)
sphereSource.Update()
# Create a mapper and actor
mapper = vtk.vtkPolyDataMapper()
mapper.SetInputConnection(sphereSource.GetOutputPort())
actor = vtk.vtkActor()
actor.SetMapper(mapper)
colors = vtk.vtkNamedColors()
actor.GetProperty().SetColor(colors.GetColor3d("yellow"))
self.renderer.RemoveActor(self.actor_point_AV)
self.actor_point_AV = actor
self.renderer.AddActor(self.actor_point_AV)
self.rendererWin.Render()
def drawPoint_PV(self, center):
sphereSource = vtk.vtkSphereSource()
sphereSource.SetCenter(center)
sphereSource.SetRadius(2.0)
sphereSource.Update()
# Create a mapper and actor
mapper = vtk.vtkPolyDataMapper()
mapper.SetInputConnection(sphereSource.GetOutputPort())
actor = vtk.vtkActor()
actor.SetMapper(mapper)
colors = vtk.vtkNamedColors()
actor.GetProperty().SetColor(colors.GetColor3d("green"))
self.renderer.RemoveActor(self.actor_point_PV)
self.actor_point_PV = actor
self.renderer.AddActor(self.actor_point_PV)
self.rendererWin.Render()
def drawPoint_MV(self, center):
sphereSource = vtk.vtkSphereSource()
sphereSource.SetCenter(center)
sphereSource.SetRadius(2.0)
sphereSource.Update()
# Create a mapper and actor
mapper = vtk.vtkPolyDataMapper()
mapper.SetInputConnection(sphereSource.GetOutputPort())
actor = vtk.vtkActor()
actor.SetMapper(mapper)
colors = vtk.vtkNamedColors()
actor.GetProperty().SetColor(colors.GetColor3d("blue"))
self.renderer.RemoveActor(self.actor_point_MV)
self.actor_point_MV = actor
self.renderer.AddActor(self.actor_point_MV)
self.rendererWin.Render()
def drawPoint_TV(self, center):
sphereSource = vtk.vtkSphereSource()
sphereSource.SetCenter(center)
sphereSource.SetRadius(2.0)
sphereSource.Update()
# Create a mapper and actor
mapper = vtk.vtkPolyDataMapper()
mapper.SetInputConnection(sphereSource.GetOutputPort())
actor = vtk.vtkActor()
actor.SetMapper(mapper)
colors = vtk.vtkNamedColors()
actor.GetProperty().SetColor(colors.GetColor3d("purple"))
self.renderer.RemoveActor(self.actor_point_TV)
self.actor_point_TV = actor
self.renderer.AddActor(self.actor_point_TV)
self.rendererWin.Render()
def drawPlane(self, origin, point1, point2):
# print('drawPlane', origin, point1, point2)
planeSource = vtk.vtkPlaneSource()
planeSource.SetOrigin(tuple(origin)) # 起始点
planeSource.SetPoint1(tuple(point1)) # 三个点中的终点1
planeSource.SetPoint2(tuple(point2)) # 三个点中的终点2
planeSource.Update()
# Create a mapper and actor
mapper = vtk.vtkPolyDataMapper()
mapper.SetInputConnection(planeSource.GetOutputPort())
actor = vtk.vtkActor()
actor.SetMapper(mapper)
colors = vtk.vtkNamedColors()
actor.GetProperty().SetColor(colors.GetColor3d('gray'))
actor.GetProperty().SetOpacity(0.7)
self.renderer.RemoveActor(self.actor_plane)
self.actor_plane = actor
self.renderer.AddActor(self.actor_plane)
self.rendererWin.Render()
def drawPoints(self, points):
for point in points:
self.drawPoint(point)
def drawPoint(self, center):
sphereSource = vtk.vtkSphereSource()
sphereSource.SetCenter(center)
sphereSource.SetRadius(4.0)
sphereSource.Update()
# Create a mapper and actor
mapper = vtk.vtkPolyDataMapper()
mapper.SetInputConnection(sphereSource.GetOutputPort())
actor = vtk.vtkActor()
actor.SetMapper(mapper)
colors = vtk.vtkNamedColors()
actor.GetProperty().SetColor(colors.GetColor3d("red"))
self.renderer.AddActor(actor)
self.rendererWin.Render()
def drawOutline(self):
self.renderer.AddActor(self.actor_outline)
self.rendererWin.Render()
def removeOutline(self):
self.renderer.RemoveActor(self.actor_outline)
self.rendererWin.Render()