VTK中的单元类型及其对应编号

北京理工大学 | 李明健

VTK 中，单元的类型是枚举，具体单元类型编号如下：

​x
1
typedef enum
2
{
3
  // Linear cells
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  VTK_EMPTY_CELL = 0,
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  VTK_VERTEX = 1,
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  VTK_POLY_VERTEX = 2,
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  VTK_LINE = 3,
8
  VTK_POLY_LINE = 4,
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  VTK_TRIANGLE = 5,
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  VTK_TRIANGLE_STRIP = 6,
11
  VTK_POLYGON = 7,
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  VTK_PIXEL = 8,
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  VTK_QUAD = 9,
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  VTK_TETRA = 10,
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  VTK_VOXEL = 11,
16
  VTK_HEXAHEDRON = 12,
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  VTK_WEDGE = 13,
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  VTK_PYRAMID = 14,
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  VTK_PENTAGONAL_PRISM = 15,
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  VTK_HEXAGONAL_PRISM = 16,
21

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  // Quadratic, isoparametric cells
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  VTK_QUADRATIC_EDGE = 21,
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  VTK_QUADRATIC_TRIANGLE = 22,
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  VTK_QUADRATIC_QUAD = 23,
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  VTK_QUADRATIC_POLYGON = 36,
27
  VTK_QUADRATIC_TETRA = 24,
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  VTK_QUADRATIC_HEXAHEDRON = 25,
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  VTK_QUADRATIC_WEDGE = 26,
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  VTK_QUADRATIC_PYRAMID = 27,
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  VTK_BIQUADRATIC_QUAD = 28,
32
  VTK_TRIQUADRATIC_HEXAHEDRON = 29,
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  VTK_TRIQUADRATIC_PYRAMID = 37,
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  VTK_QUADRATIC_LINEAR_QUAD = 30,
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  VTK_QUADRATIC_LINEAR_WEDGE = 31,
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  VTK_BIQUADRATIC_QUADRATIC_WEDGE = 32,
37
  VTK_BIQUADRATIC_QUADRATIC_HEXAHEDRON = 33,
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  VTK_BIQUADRATIC_TRIANGLE = 34,
39

40
  // Cubic, isoparametric cell
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  VTK_CUBIC_LINE = 35,
42

43
  // Special class of cells formed by convex group of points
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  VTK_CONVEX_POINT_SET = 41,
45

46
  // Polyhedron cell (consisting of polygonal faces)
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  VTK_POLYHEDRON = 42,
48

49
  // Higher order cells in parametric form
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  VTK_PARAMETRIC_CURVE = 51,
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  VTK_PARAMETRIC_SURFACE = 52,
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  VTK_PARAMETRIC_TRI_SURFACE = 53,
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  VTK_PARAMETRIC_QUAD_SURFACE = 54,
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  VTK_PARAMETRIC_TETRA_REGION = 55,
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  VTK_PARAMETRIC_HEX_REGION = 56,
56

57
  // Higher order cells
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  VTK_HIGHER_ORDER_EDGE = 60,
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  VTK_HIGHER_ORDER_TRIANGLE = 61,
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  VTK_HIGHER_ORDER_QUAD = 62,
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  VTK_HIGHER_ORDER_POLYGON = 63,
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  VTK_HIGHER_ORDER_TETRAHEDRON = 64,
63
  VTK_HIGHER_ORDER_WEDGE = 65,
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  VTK_HIGHER_ORDER_PYRAMID = 66,
65
  VTK_HIGHER_ORDER_HEXAHEDRON = 67,
66

67
  // Arbitrary order Lagrange elements (formulated separated from generic higher order cells)
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  VTK_LAGRANGE_CURVE = 68,
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  VTK_LAGRANGE_TRIANGLE = 69,
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  VTK_LAGRANGE_QUADRILATERAL = 70,
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  VTK_LAGRANGE_TETRAHEDRON = 71,
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  VTK_LAGRANGE_HEXAHEDRON = 72,
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  VTK_LAGRANGE_WEDGE = 73,
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  VTK_LAGRANGE_PYRAMID = 74,
75

76
  // Arbitrary order Bezier elements (formulated separated from generic higher order cells)
77
  VTK_BEZIER_CURVE = 75,
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  VTK_BEZIER_TRIANGLE = 76,
79
  VTK_BEZIER_QUADRILATERAL = 77,
80
  VTK_BEZIER_TETRAHEDRON = 78,
81
  VTK_BEZIER_HEXAHEDRON = 79,
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  VTK_BEZIER_WEDGE = 80,
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  VTK_BEZIER_PYRAMID = 81,
84
}

具体输出时，可根据需要选择类型，输入整型即可。常用的包括点 VTK_VERTEX = 1，四边形 VTK_QUAD = 9, 六面体 VTK_HEXAHEDRON = 12 等。