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MeshPrimitives[mreg,d]

给出网格区域 mreg 中维度为 d 的单元的图形基元.

MeshPrimitives[mreg,cellspec]

给出由 cellspec 指定的基元.

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基本范例  
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MeshPrimitives

MeshPrimitives[mreg,d]

给出网格区域 mreg 中维度为 d 的单元的图形基元.

MeshPrimitives[mreg,cellspec]

给出由 cellspec 指定的基元.

更多信息

范例

打开所有单元 关闭所有单元

基本范例  (2)

二维空间中 MeshRegion 的网格基元：

Wolfram Language code: ℛ = MeshRegion[{{0, 0}, {1, 0}, {1, 1}, {0, 1}}, Polygon[{1, 2, 3, 4}]]

零维单元基元包含所有拐角点：

Wolfram Language code: MeshPrimitives[ℛ, 0]
Wolfram Language code: Show[ℛ, Graphics[{Red, %}]]

一维单元基元包含所有边：

Wolfram Language code: MeshPrimitives[ℛ, 1]
Wolfram Language code: Show[ℛ, Graphics[{Red, %}]]

只有二维单元基元可以作为输入使用：

Wolfram Language code: MeshPrimitives[ℛ, 2]

三维空间中 MeshRegion 的网格单元基元：

Wolfram Language code: ℛ = MeshRegion[{{0, 0, 0}, {2, 0, 0}, {2, 2, 0}, {0, 2, 0}, {1, 1, 2}}, Tetrahedron[{{1, 2, 3, 5}, {1, 3, 4, 5}}], MeshCellStyle -> 2 -> Opacity[0.3]]

零维单元：

Wolfram Language code: MeshPrimitives[ℛ, 0]
Wolfram Language code: Show[ℛ, Graphics3D[{Red, %}]]

一维单元基元：

Wolfram Language code: MeshPrimitives[ℛ, 1]
Wolfram Language code: Show[ℛ, Graphics3D[{Red, %}]]

二维单元基元：

Wolfram Language code: MeshPrimitives[ℛ, 2]
Wolfram Language code: Show[ℛ, Graphics3D[{Opacity[0.2, Red], %}]]

范围  (8)

一维空间中 MeshRegion 的网格基元：

Wolfram Language code: ℛ = MeshRegion[{{0}, {1}, {2}}, {Line[{1, 2}], Point[3]}]

零维单元基元包含端点：

Wolfram Language code: MeshPrimitives[ℛ, 0]

一维单元基元包含所有线段：

Wolfram Language code: MeshPrimitives[ℛ, 1]

二维空间中 MeshRegion 的网格基元：

Wolfram Language code: ℛ = MeshRegion[{{0, 0}, {1, 0}, {1, 1}, {0, 1}}, Polygon[{1, 2, 3, 4}]]

零维单元基元包含所有拐角点：

Wolfram Language code: MeshPrimitives[ℛ, 0]
Wolfram Language code: Show[ℛ, Graphics[{Red, %}]]

一维单元基元包含所有边：

Wolfram Language code: MeshPrimitives[ℛ, 1]
Wolfram Language code: Show[ℛ, Graphics[{Red, %}]]

只有二维单元基元作为输入使用：

Wolfram Language code: MeshPrimitives[ℛ, 2]
Wolfram Language code: Show[ℛ, Graphics[{Red, %}]]

三维空间中 MeshRegion 的网格单元基元：

Wolfram Language code: ℛ = MeshRegion[{{0, 0, 0}, {2, 0, 0}, {2, 2, 0}, {0, 2, 0}, {1, 1, 2}}, Tetrahedron[{{1, 2, 3, 5}, {1, 3, 4, 5}}], MeshCellStyle -> 2 -> Opacity[0.3]]

零维单元：

Wolfram Language code: MeshPrimitives[ℛ, 0]
Wolfram Language code: Show[ℛ, Graphics3D[{Red, %}]]

一维单元基元：

Wolfram Language code: MeshPrimitives[ℛ, 1]
Wolfram Language code: Show[ℛ, Graphics3D[{Red, %}]]

二维单元基元：

Wolfram Language code: MeshPrimitives[ℛ, 2]
Wolfram Language code: Show[ℛ, Graphics3D[{Opacity[0.2, Red], %}]]

指定一维单元基元列表：

Wolfram Language code: ℛ = MeshRegion[{{0, 0, 0}, {2, 0, 0}, {2, 2, 0}, {0, 2, 0}, {1, 1, 2}}, Tetrahedron[{{1, 2, 3, 5}, {1, 3, 4, 5}}], MeshCellStyle -> 2 -> Opacity[0.3]]
Wolfram Language code: MeshPrimitives[ℛ, {1, {2, 5, 6}}]
Wolfram Language code: Show[ℛ, Graphics3D[{Red, %}]]

另一方面，您可以指定一个头部和索引：

Wolfram Language code: MeshPrimitives[ℛ, {Line[{1, 2, 5, 1}]}]
Wolfram Language code: Show[ℛ, Graphics3D[{Red, %}]]

使用模式获取每个奇数零维单元基元：

Wolfram Language code: ℛ = MeshRegion[{{0, 0, 0}, {2, 0, 0}, {2, 2, 0}, {0, 2, 0}, {1, 1, 2}}, Tetrahedron[{{1, 2, 3, 5}, {1, 3, 4, 5}}], MeshCellStyle -> 2 -> Opacity[0.3]]
Wolfram Language code: MeshPrimitives[ℛ, {0, _ ? OddQ}]
Wolfram Language code: Show[ℛ, Graphics3D[{PointSize[Large], Red, %}]]

All 零维单元基元：

Wolfram Language code: MeshPrimitives[ℛ, {0, All}]
Wolfram Language code: Show[ℛ, Graphics3D[{PointSize[Large], Red, %}]]

二维单元基元的列表：

Wolfram Language code: ℛ = MeshRegion[{{0, 0, 0}, {2, 0, 0}, {2, 2, 0}, {0, 2, 0}, {1, 1, 2}}, Tetrahedron[{{1, 2, 3, 5}, {1, 3, 4, 5}}], MeshCellStyle -> 2 -> Opacity[0.3]]
Wolfram Language code: MeshPrimitives[ℛ, {2, {2, 5}}]
Wolfram Language code: Show[ℛ, Graphics3D[{Opacity[0.2, Red], %}]]

混合维度单元基元的列表：

Wolfram Language code: MeshPrimitives[ℛ, {{0, 5}, {1, 1}, {2, 5}}]
Wolfram Language code: Show[ℛ, Graphics3D[{PointSize[Large], Red, %}]]

从二维 BoundaryMeshRegion 指定零维单元基元的列表：

Wolfram Language code: ℛ = BoundaryMeshRegion[{{0, 0}, {1, 0}, {0, 1}}, Line[{1, 2, 3, 1}]]
Wolfram Language code: MeshPrimitives[ℛ, {Point[{1, 3}]}]
Wolfram Language code: Show[ℛ, Graphics[{PointSize[Large], Red, %}]]

从三维 BoundaryMeshRegion 指定零维和一维单元基元的列表：

Wolfram Language code: ℛ = BoundaryMeshRegion[{{0, 0, 0}, {1, 0, 0}, {0, 1, 0}, {0, 0, 1}}, Polygon[{{1, 2, 3}, {1, 2, 4}, {2, 3, 4}, {1, 3, 4}}]]
Wolfram Language code: MeshPrimitives[ℛ, 0 | 1]
Wolfram Language code: Show[ℛ, Graphics3D[{PointSize[Large], Red, %}]]

属性和关系  (1)

MeshCellCount 可用于查找每个维度中基元的最大数目：

Wolfram Language code: ℛ = MeshRegion[{{0, 0, 0}, {2, 0, 0}, {2, 2, 0}, {0, 2, 0}, {1, 1, 2}}, Tetrahedron[{{1, 2, 3, 5}, {1, 3, 4, 5}}], MeshCellStyle -> 2 -> Opacity[0.3]]
Wolfram Language code: {MeshCellCount[ℛ], Length /@ MeshPrimitives[ℛ, All]}
Wolfram Research (2014)，MeshPrimitives，Wolfram 语言函数，https://reference.wolfram.com/language/ref/MeshPrimitives.html.

文本

Wolfram Research (2014)，MeshPrimitives，Wolfram 语言函数，https://reference.wolfram.com/language/ref/MeshPrimitives.html.

CMS

Wolfram 语言. 2014. "MeshPrimitives." Wolfram 语言与系统参考资料中心. Wolfram Research. https://reference.wolfram.com/language/ref/MeshPrimitives.html.

APA

Wolfram 语言. (2014). MeshPrimitives. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/ref/MeshPrimitives.html 年

BibTeX

@misc{reference.wolfram_2026_meshprimitives, author="Wolfram Research", title="{MeshPrimitives}", year="2014", howpublished="\url{https://reference.wolfram.com/language/ref/MeshPrimitives.html}", note=[Accessed: 04-November-2026]}

BibLaTeX

@online{reference.wolfram_2026_meshprimitives, organization={Wolfram Research}, title={MeshPrimitives}, year={2014}, url={https://reference.wolfram.com/language/ref/MeshPrimitives.html}, note=[Accessed: 04-November-2026]}