ROSE Math Library

Version 18 release.
Check if the given axis and reference direction vectors are co-aligned in a call to rose_xform_put_dirs() and if they are, generate a reference dir as if it were omitted.
Pass through original value on unit conversion if either the starting or ending unit is declared as roseunit_as_is. Previously, we only checked ending unit.
Added functions to project a point to a plane.
- rose_pt_nearest_on_plane()
- rose_pt_nearest_on_plane_uv()
Added functions for use with Euler angles and rotations.
- rose_xform_compose_rotation()
- rose_xform_get_euler_angles()
- rose_xform_put_euler_angles()
Disable XML entity expansion when reading XML mesh data to avoid billion laughs attack.

Added RoseDelaunay2D::getPointCount() method.
Updated RoseMeshFacetSet::getTriangleNormal to return a zero vector on degenerate triangles and tweaked tolerance for degenerate values.
Speed improvement to vector normalize.

Update for major revision.
Updated RoseMeshTopology to allow partial shells to be processed. (Useful for finding the boundaries of a set of facets.)
Added RoseMeshXMLOpts to the XML writer API.
Added bulletproofing against NULL values to topology handling code.

Released as ST-Developer v16 SP4
Updated mesh topology validation code to check for anti-parallel facets that share a single vertex
Added overloads with RoseDirection and RosePoint to the put_x/y/zdir functions and rose_xform_put_origin.
Added some constant arrays for ordinal directions to accompany the existing rose_vec_zero const array.
- rose_vec_100
- rose_vec_010
- rose_vec_001

Updated RoseMeshTopologyVertexCursor to insure that the edges and vertices returned by getNext are return in counter-clockwise order.
Added void MeshMeshTopologyVertexCursor::facetEdgeVertex.
Update for ST-Developer v16 SP3

Updated delaunay functionality to specify two types of edges: border and internal. This is needed when refaceting triangles.
Updated delaunay code to be more more robust numerically when computing the intersection of two small line segments by scaling the direction vector rather than using the existing values
Update RoseMeshFacet::getFacetNormal to not crash when the facet index is ROSE_MESH_NULL_IDX
Fixed bugs in rose_mesh_topology: grow vertex list when calling setFirstVertexFacet. Update growFacetList to take a size parameter, rather than the max facet to take (== sz+1).
Updated RoseDelaunay2D::insertPoint to return ROSE_NOTFOUND when any of the points in the list could not be inserted.

Added topology query methods to RoseDelaunay2D: getEdgeCount(), getEdgeVertex(), getEdgeTriangle(), getTriangleEdge(), getTriangleVertex()
Facet, Face, Face properties and FacetSet basics.
Added RoseReal2DArray and RoseReal3DArray to handle lists of points and directions.
Added cartesian transformation operator initialization logic and non-uniform scaling operations.
Bounding box classes for 3D and 2D regions. Added bounds computation for lists of points, facets and entire meshes.
Added rose_pt_midpoint(), centerpt() for the bounding boxes, and meshing XML output.
Added 2D Delaunay triangularization helper class.

Matrix math, cross/dot products, etc for points, directions, and coordinate system transforms.
Unit enums and value conversion.
Initial version, collecting math code scattered across stix, stixmesh, stixsim, and ifc libraries. Bringing everything into one place, documenting, and making sure everything is properly tested.