VTK学习笔记1.2.2

版权声明：转载请告知征得同意。 https://blog.csdn.net/qq_42731466/article/details/81293073

整理于 https://www.icourse163.org/course/BIT-1001871001（Python科学计算三维可视化）

IVTK工具

引入该工具：

from tvtk.tools import ivtk

以下举例：

from tvtk.api import tvtk
from tvtk.tools import ivtk
from pyface.api import GUI
s = tvtk.CubeSource(x_length = 1.0,y_length=2.0,z_length = 3.0)
m = tvtk.PolyDataMapper(input_connection=s.output_port)
a = tvtk.Actor(mapper = m)

gui = GUI() #创建一个Crust窗口
win = ivtk.IVTKWithCrustAndBrowser()
win.open()
win.scene.add_actor(a)

gui.start_enent_loop()#开始界面消息循环

对比1.2.1的部分

r.add_actor(a)
w = tvtk.RenderWindow(size = (300,300)) #创建窗口
w.add_renderer(r)
i = tvtk.RenderWindowInteractor(render_window = w)
i.initialize()                          #开启交互
i.start()

gui = GUI()             #创建一个Crust窗口        
win = ivtk.IVTKWithCrustAndBrowser()
win.open()
win.scene.add_actor(a)
gui.start_event_loop()#开始界面消息循环

GUI修改之后：

from tvtk.api import tvtk
from tvtk.tools import ivtk
from pyface.api import GUI
s = tvtk.CubeSource(x_length = 1.0,y_length=2.0,z_length = 3.0)
m = tvtk.PolyDataMapper(input_connection=s.output_port)
a = tvtk.Actor(mapper = m)

gui = GUI()
win = ivtk.IVTKWithCrustAndBrowser()
win.open()
win.scene.add_actor(a)

#错误修正,确定窗口，让它成为一个子窗口    
dialog = win.control.centralWidget().widget(0).widget(0)
from pyface.qt import QtCore
dialog.setWindowFlags(QtCore.Qt.WindowFlags(0x00000000))
dialog.show()

gui.start_event_loop()#开始界面消息循环

加强程序的可读性：

from tvtk.api import tvtk
def ivtk_scene(actors):
    from tvtk.tools import ivtk
    win = ivtk.IVTKWithCrustAndBrowser()
    win.open()
    win.scene.add_actor(actors)
    dialog = win.control.centralWidget().widget(0).widget(0)
    from pyface.qt import QtCore
    dialog.setWindowFlags(QtCore.Qt.WindowFlags(0x00000000))
    dialog.show()
    return win

def event_loop():
    from pyface.api import GUI
    gui = GUI()
    gui.start_event_loop()

s = tvtk.CubeSource(x_length = 1.0,y_length=2.0,z_length = 3.0)
m = tvtk.PolyDataMapper(input_connection=s.output_port)
a = tvtk.Actor(mapper = m)
win = ivtk_scene(a)
win.scene.isometric_view()
event_loop()

注意，左窗口提供了管线浏览器，树形展开，下方提供python命令窗口
照相机属性：
clipping_plane:包含两个元素，分别表示照相机到远近两个裁剪平面的距离。在这两个平面范围之外将不会显示。
position：照相机在三维空间中的坐标
focal_point:照相机所聚焦的焦点坐标
view_up:照相机上方向矢量

light可以对光源进行设置，颜色和光源数，scene中可以设置背景