PythonOCC基础使用：建模——矩阵变换（平移/旋转/缩放/镜像）

绝地灬酷狼 2021-12-11 01:07 799阅读 0赞

#### 此处特别感谢小昌做出的贡献！ ####

### 1.平移 ###

效果图：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjc1NTM4NA_size_16_color_FFFFFF_t_70]

from OCC.Core.BRepPrimAPI import BRepPrimAPI_MakeCone
    from OCC.Core.TopLoc import TopLoc_Location
    from OCC.Core.TopoDS import TopoDS_Shape
    from OCC.Core.gp import gp_Pnt, gp_Trsf, gp_Vec, gp_Ax1, gp_Dir
    from OCC.Display.OCCViewer import rgb_color
    
    my_cone = BRepPrimAPI_MakeCone(1,0,4).Shape()
    cone=TopoDS_Shape(my_cone)
    T=gp_Trsf()
    T.SetTranslation(gp_Vec(0,5,0))
    loc=TopLoc_Location(T)
    cone.Location(loc)
    
    if __name__ == "__main__":
        from OCC.Display.SimpleGui import init_display
        display, start_display, add_menu, add_function_to_menu = init_display()
        display.DisplayShape(my_cone, update=True,color=rgb_color(1,0,0))
        display.DisplayShape(cone, update=True,color=rgb_color(0,0,1))
        start_display()

### 2.旋转 ###

效果图：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjc1NTM4NA_size_16_color_FFFFFF_t_70 1]

from OCC.Core.GeomAPI import GeomAPI_Interpolate
    from OCC.Core.BRepPrimAPI import BRepPrimAPI_MakeCone
    from OCC.Core.TopoDS import TopoDS_Shape
    from OCC.Core.TColgp import TColgp_HArray1OfPnt
    from OCC.Core.gp import gp_Pnt, gp_Ax1, gp_Dir, gp_Circ, gp_Elips,gp_Trsf,gp_Vec
    from OCC.Core.TopLoc import TopLoc_Location
    from OCC.Core.GC import GC_MakeSegment, GC_MakeCircle, GC_MakeArcOfCircle, GC_MakeEllipse,GC_MakeRotation
    from OCC.Core.BRepBuilderAPI import BRepBuilderAPI_MakeEdge, BRepBuilderAPI_MakeWire
    from OCC.Display.OCCViewer import rgb_color
    #旋转
    my_cone = BRepPrimAPI_MakeCone(1,0,4).Shape()
    cone=TopoDS_Shape(my_cone)
    T1=gp_Trsf()
    T=gp_Ax1(gp_Pnt(0, 1, 0), gp_Dir(0, 6, 4))
    T1.SetRotation(T,1)
    coneLoc=TopLoc_Location(T1)
    my_cone.Move(coneLoc)
    
    if __name__ == "__main__":
        from OCC.Display.SimpleGui import init_display
        display, start_display, add_menu, add_function_to_menu = init_display()
        display.DisplayShape(cone,update=True,color=rgb_color(0,0,0))
        display.DisplayShape(my_cone, update=True,color=rgb_color(1,0,0))
        start_display()

### 3.缩放 ###

效果图：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjc1NTM4NA_size_16_color_FFFFFF_t_70 2]

from OCC.Core.GeomAPI import GeomAPI_Interpolate
    from OCC.Core.BRepPrimAPI import BRepPrimAPI_MakeCone
    from OCC.Core.TopoDS import TopoDS_Shape
    from OCC.Core.TColgp import TColgp_HArray1OfPnt
    from OCC.Core.gp import gp_Pnt, gp_Ax1, gp_Dir, gp_Circ, gp_Elips,gp_Trsf,gp_Vec
    from OCC.Core.TopLoc import TopLoc_Location
    from OCC.Core.GC import GC_MakeSegment, GC_MakeCircle, GC_MakeArcOfCircle, GC_MakeEllipse,GC_MakeRotation
    from OCC.Core.BRepBuilderAPI import BRepBuilderAPI_MakeEdge, BRepBuilderAPI_MakeWire
    from OCC.Display.OCCViewer import rgb_color
    #缩放
    my_cone = BRepPrimAPI_MakeCone(1,0,4).Shape()
    cone=TopoDS_Shape(my_cone)
    T1=gp_Trsf()
    T=gp_Pnt(0, 20, 0)
    T1.SetScale(T,5)
    coneLoc=TopLoc_Location(T1)
    my_cone.Move(coneLoc)
    
    if __name__ == "__main__":
        from OCC.Display.SimpleGui import init_display
        display, start_display, add_menu, add_function_to_menu = init_display()
        display.DisplayShape(cone,update=True,color=rgb_color(0,0,0))
        display.DisplayShape(my_cone, update=True,color=rgb_color(1,0,0))
        start_display()

### 4.镜像 ###

效果图：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjc1NTM4NA_size_16_color_FFFFFF_t_70 3]

from OCC.Core.TColgp import TColgp_HArray1OfPnt
    from OCC.Core.BRepPrimAPI import BRepPrimAPI_MakeCone
    from OCC.Core.gp import gp_Pnt, gp_Ax1, gp_Dir, gp_Circ, gp_Elips,gp_Trsf,gp_Vec
    from OCC.Core.TopLoc import TopLoc_Location
    from OCC.Core.TopoDS import TopoDS_Shape
    from OCC.Core.GC import GC_MakeSegment, GC_MakeCircle, GC_MakeArcOfCircle, GC_MakeEllipse,GC_MakeRotation
    from OCC.Core.BRepBuilderAPI import BRepBuilderAPI_MakeEdge, BRepBuilderAPI_MakeWire
    from OCC.Display.OCCViewer import rgb_color
    #镜像
    my_cone = BRepPrimAPI_MakeCone(1,0,4).Shape()
    cone=TopoDS_Shape(my_cone)
    T1 = gp_Trsf()
    T=gp_Ax1(gp_Pnt(0,6,0),gp_Dir(0,4,1))
    T1.SetMirror(T)
    coneLoc=TopLoc_Location(T1)
    my_cone.Move(coneLoc)
    
    if __name__ == "__main__":
        from OCC.Display.SimpleGui import init_display
        display, start_display, add_menu, add_function_to_menu = init_display()
        display.DisplayShape( my_cone, update=True, color=rgb_color( 1, 0, 0 ) )
        display.DisplayShape(cone,update=True,color=rgb_color(0,0,0))
        start_display()

### 5.以上效果叠加(占坑) ###

参考链接：[http://www.cppblog.com/eryar/archive/2015/01/22/209612.html][http_www.cppblog.com_eryar_archive_2015_01_22_209612.html]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjc1NTM4NA_size_16_color_FFFFFF_t_70]: /images/20211210/bc8ab26afea44a07a26b7fda5f1b269a.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjc1NTM4NA_size_16_color_FFFFFF_t_70 1]: /images/20211210/1a1207fd8a5f44e9a68c952213cdccf9.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjc1NTM4NA_size_16_color_FFFFFF_t_70 2]: /images/20211210/fd40dd64f2f34b2383e18c4868a084a9.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjc1NTM4NA_size_16_color_FFFFFF_t_70 3]: /images/20211210/ba5a0ac50cff4ecfa09952f79ea5e505.png
[http_www.cppblog.com_eryar_archive_2015_01_22_209612.html]: http://www.cppblog.com/eryar/archive/2015/01/22/209612.html