Schematron validation convexPolyhedron.xsd A GML conformant schema for specialised geometries simple solids Copyright (c) 2007 Open Geospatial Consortium - see http://www.opengeospatial.org/about/?page=ipr Head of substitution group for primitive Solids with simple descriptions. AbstractGeometricAggregateType is used as root class instead of MultiSolid to avoid derivation-by-restriction to override the inherited "solidMember" property Head of substitution group for multiSolids with simple descriptions. The "Hexahedron" element is a simple solid with eight vertices and six sides. Relative to a right-handed coordinate system the conventional vertex sequence is 7____6 / | / | 4____5 | | 3 _ | 2 | / | / 0____1 For cases where the face order is used implicitly, then the faces are usually defined with the following vertices (in the local coordinate system) 0 - 0 1 5 4 1 - 1 2 6 5 2 - 2 3 7 6 3 - 3 0 4 7 4 - 0 3 2 1 5 - 4 5 6 7 Hexahedron must have 8 vertices The "Hexahedron" element is a simple solid with eight vertices and six sides. The "Wedge" element is a simple solid with six vertices and five sides. Relative to a right-handed coordinate system the conventional vertex sequence is 5 / | \ / 4 \ 3 / -\- 2 |/ \ | 0____1 For cases where the face order is used implicitly, then the faces are usually defined with the following vertices (in the local coordinate system) 0 - 0 1 4 1 - 1 2 5 4 2 - 2 3 5 3 - 3 0 4 5 4 - 0 3 2 1 Wedge must have 6 vertices The "Wedge" element is a simple solid with six vertices and five sides. The "Pyramid" element is a simple solid with five vertices and five sides. Relative to a right-handed coordinate system the conventional vertex sequence is 4 //\\ 3 / -\- 2 |/ \ | 0____1 For cases where the face order is used implicitly, then the faces are usually defined with the following vertices (in the local coordinate system) 0 - 0 1 4 1 - 1 2 4 2 - 2 3 4 3 - 3 0 4 4 - 0 3 2 1 Pyramid must have 5 vertices The "Pyramid" element is a simple solid with five vertices and five sides. The "Tetrahedron" element is a simple solid with four vertices and four sides. Relative to a right-handed coordinate system the conventional vertex sequence is 3 / | \ 2- -| - -1 \ | / 0 For cases where the face order is used implicitly, then the faces are usually defined with the following vertices (in the local coordinate system) 1 - 1 2 3 2 - 2 0 3 0 - 0 1 3 3 - 0 2 1 Tetrahedron must have 4 vertices The "Tetrahedron" element is a simple solid with four vertices and four sides.