sgCore

sgCore includes numerous functions for 3D and 2D modeling with robust algorithms for creating and editing elaborate objects. It provides everything you need to develop a fully functional CAD system. sgCore additionally offers loading AutoCAD SHX fonts, creating text and dimensional objects (distant, radial, diametral, angle), saving objects in user-defined formats, loading objects from files and DXF import/export. sgCore's low-maintenance, open architecture allows developers create additional features using sgCore's state-of-the-art 3D modeling technology as their foundation.

2D primitives
The sgCore library offers programmers a full set of features to work with 2D objects. Based on two primitives, complex 3D objects can be built. Build POINT, LINE, CIRCLE, ARC, SPLINE and CONTOUR objects in the three-dimensional space.  Includes algorithms for exploring relationships of two objects - you can check if the objects lie on the same plane, if one object is placed inside of the other (for closed objects) or if they are intersecting. There is also a feature that allows you to create an equidistant contour for any 2D object.

3D primitives
The sgCore library offers programmers a full set of features for working with 3D objects. Build BOX, SPHERE, CYLINDER, CONE, TORUS, ELLIPSOID and SPHERIC BAND objects. You can read vertexes, edges, triagles and normals arrays from any 3D object.

Boolean operations
The sgCore library is a solid-state modeling library and it can be understood using Boolean operations. For example, the result of intersecting two 3D objects can be several non-intersecting areas. In sgCore it will be an array of non-linked objects - solids. The following algorithms belong to the Boolean algorithms group:

• Intersection of two 3D objects
• Union of two 3D objects
• Subtracting the one 3D object from another
• Intersection of two 3D objects surfaces
• Intersection of a 3D object surface and a plane

Kinematic operations
Kinematic operations is the means of creating new objects by extruding a 2D object along a path in three-dimensional space. Another 2D object can also be on a similar path. The following algorithms belong to the Kinematic algorythms group:

• Revolve solids and surfaces.
• Extrusion solids and surfaces by extruding an object along a vector (with holes)
• Spiral solids and surfaces (with holes)
• Pipe solids and surfaces (with holes) - extrusion by extruding an object along another object
• Coons surfaces and flat faces with holes

sgCore Main Features

• Create 2D primitives in a 3D space - points, circles, arcs, splines and contours
• Create equidistant 2D objects with various shifts and rounding angles
• Create 3D primitives - spheres, boxes, cones, cylinders, toruses, ellipsoids and spherical bands
• Supports both 3D solids and surfaces
• Create groups of objects
• Calculate UV texture coordinates for each polygon vertex using cubic, spherical and cylindric methods of textures mapping
• 3D polygonal objects triangulation
• Boolean operations with objects - intersection, joining and subtraction
• Find intersection lines
• Find clips by arbitrary planes
• Construct solids and surfaces
• Construct spiral solids and surfaces
• Construct solids and surfaces from their clips
• Construct flat faces with holes on boundary contours
• Create solids by surfaces sewing
• Find the square and volume values of solid objects
• Undo-Redo
• Ray tracing engine
• Load AutoCAD SHX fonts
• Create text objects
• Create dimensional objects (distant, radial, diametral, angle)
• Save objects in user-defined formats
• Load objects from a file
• DXF and STL import/export
• .NET wrapper for sgCore and C# examples
• 64-bit version of sgCore