Package RenderStack.Geometry

Packages
package	Shapes
Classes
class	AttributeMapCollection
	Collection of attributes, to be used in Geometry for example. More...
class	Corner
	A connection between Point and Polygon. More...
struct	Edge
	Connection between two points. More...
class	Geometry
	Maintains connectivity and attribute information for polygon based meshes. More...
class	CatmullClarkGeometryOperation
	Performs Catmull-Clark subdivision operation to Geometry. More...
class	CloneGeometryOperation
	Creates a clone of Geometry. Copies all Polygons, Points, Corners, and copies their (and edges) attributes. More...
class	GeometryOperation
	Base class for Geometry manipulation operations. More...
class	Sqrt3GeometryOperation
class	SubdivideGeometryOperation
class	TriangulateGeometryOperation
class	TruncateGeometryOperation
class	Point
class	Polygon
	A shape defined by the Points that are connected to it through the Corners. More...

---

Detailed Description

Geometry namespace provides basic classes to manipulate geometric objects with arbitrary attributes.

Points and corners have no attributes attached by default. Any attributes are stored in external attribute maps. Attribute maps are Dictionaries, for example to store point locations one can use Dictionary<Point, Vector3>.

Attribute maps are stored in Geometry class. There are attribute maps for Points, Corners, Polygons and Edges.

• Basic Geometry classes:
  • Point: List of Corners
  • Corner: References single Point and single Polygon
  • Polygon: List of Corners
  • Geometry: Contains Points, Polygons, Edges and their attribute maps.
  • AttributeMapCollection: Maintains a collection of arbitrary, named Dictionaries for a specific KeyType.

• Classes to generate some basic shapes:
  • Cone, cube cuboctahedron, cylinder, dodecahedron, icosahedron, octahedron, quad, sphere, tetrahedron
  • Tube class that can generate a tube around parametric curve

• Geometry manipulation classes that can produce modified copies of Geometry instances
  • Clone
  • Subdivide
  • Triangulate
  • Catmull-Clark subdivision
  • Sqrt(3) subdivision
  • Truncate

Status

This namespace is mostly stable.

Dependencies

RenderStack.Math

Used by

RenderStack.Mesh

Warning:

Truncate is not always working right, and known to enter endless loop for certain geometries.

Todo:

Fix known issues with truncate

Add operations to cleanup and fix geometry

Profile and optimize if necessary