[G+smo]边界和角点

最新推荐文章于 2020-01-30 22:50:37 发布

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1. 确定多片模型中各个片的顺序

借助Paraview.打开Pipeline brower下方的information选项卡，可以看到Data Hierarchy中的multi-block dataset. 选定其中一个block, 可以查看其几何区域和边界的范围。由这个信息可以确定片的顺序。

打开gsview.pvd -> Properties Apply -> filters Alphabetical Extract block, create ExtractBlock1 并选中它 -> Properties apply -> properties, block indices

通过该信息可以准确确定block的编号；

2. 确定每个片的边界

每个片的边界编号按逆时针编号为 1 3 2 4 ，分别为西南东北。

利用./gsMakeMultipatch 输出的makeMultiPatchOutput.xml, 文件的最后一部分代表其边界拓扑信息。

利用这些信息可以确定边界的编号

例如

表示：
[15:17:49] Angelos Mantzaflaris: patch 1 side 2 matches with patch 0 side 1
[15:18:25] Angelos Mantzaflaris: patch 1 side 4(north) is a boundary
[15:20:07] Angelos Mantzaflaris: opposite to the inteface: patch 1 --> side 1(west), 0 -->side 2(east)

These definitions are used by, e.g., boxSide, boxCorner, etc.

    The sides are numbered as follows:

    2D CASE                              |    3D CASE

    -------------------------------------|----------------------------------------

    Edge 1, {(u,v) : u = 0} :  \c west   |    Face 1, {(u,v,w) : u = 0}:  \c west

    Edge 2, {(u,v) : u = 1} :  \c east   |    Face 2, {(u,v,w) : u = 1}:  \c east

    Edge 3, {(u,v) : v = 0} :  \c south  |    Face 3, {(u,v,w) : v = 0}:  \c south

    Edge 4, {(u,v) : v = 1} :  \c north  |    Face 4, {(u,v,w) : v = 1}:  \c north

    &nbsp;                |    Face 5, {(u,v,w) : w = 0}:  \c front

    &nbsp;                |    Face 6, {(u,v,w) : w = 1}:  \c back

    \c none is a special compatibility value used to denote that this is not a boundary.

    The corners are numbered as follows:

    2D CASE                                            |    3D CASE

    ---------------------------------------------------|----------------------------------------

    Corner 1, {(u,v) : u = 0, v = 0} :  \c southwest   |    Corner 1, {(u,v,w) : u = 0, v = 0, w = 0}:  \c southwestfront

    Corner 2, {(u,v) : u = 1, v = 0} :  \c southeast   |    Corner 2, {(u,v,w) : u = 1, v = 0, w = 0}:  \c southeastfront

    Corner 3, {(u,v) : u = 0, v = 1} :  \c northwest   |    Corner 3, {(u,v,w) : u = 0, v = 1, w = 0}:  \c northwestfront

    Corner 4, {(u,v) : u = 1, v = 1} :  \c northeast   |    Corner 4, {(u,v,w) : u = 1, v = 1, w = 0}:  \c northeastfront

    &nbsp;                |    Corner 5, {(u,v,w) : u = 0, v = 0, w = 1}:  \c southwestback

    &nbsp;                |    Corner 6, {(u,v,w) : u = 1, v = 0, w = 1}:  \c southeastback

    &nbsp;                |    Corner 7, {(u,v,w) : u = 0, v = 1, w = 1}:  \c northwestback

    &nbsp;                |    Corner 8, {(u,v,w) : u = 1, v = 1, w = 1}:  \c northeastback