This topic describes the new data models for mesh modeling. The new data models are developed based on the Simple Features (SF) standards from Open Geospatial Consortium (OGC).

IndexSurface

The IndexSurface data model describes a polyhedron by using indexes. The following figure shows a polyhedron.Figure 1

You can describe the polyhedron by using the coordinates of vertices (p1, p2, p3, p4, and p5) and the following faces that are specified by using indexes: (1, 2, 3), (2, 4, 3), and (4, 5, 3).

TriangleStrip

The TriangleStrip data model describes a polyhedron by using consecutive points. The following figure shows a polyhedron.Figure 2

You can describe the polyhedron by using the coordinates of vertices (p1, p2, p3, p4, and p5). Specifically, the polyhedron consists of three triangular faces (p1, p2, p3), (p2, p3, p4), and (p3, p4, p5), and you can describe the triangular faces by using the coordinates of the vertices.

TriangleFan

The TriangleFan data model describes a polyhedron by using consecutive points. The following figure shows a polyhedron.Figure 3

You can describe the polyhedron by using the coordinates of vertices (p1, p2, p3, p4, and p5). Specifically, the polyhedron consists of three triangular faces (p1, p2, p3), (p1, p3, p4), and (p1, p4, p5), and you can describe the triangular faces by using the coordinates of the vertices.