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3d (76)



3dldf Heckert gnu.small.png
3DLDF is a GNU package for three-dimensional drawing with MetaPost output. It is written in C++ using CWEB. It is intended, among other things, to provide a convenient way of including 3D graphics in TeX documents. This package includes an interactive program called `3dldf', which implements a language intended to resemble Donald Knuth's METAFONT language and John Hobby's MetaPost language, which is based on METAFONT.

Algart
AlgART are free software Java libraries, supporting generalized smart arrays and matrices with elements of any types (1 bit, 8/16/32/64-bit integers, 32/64-bit floating point values and any other Java types), including a wide set of of 2D-, 3D- and multidimensional image processing and other algorithms, working with arrays and matrices.

Main Features

  • The libraries use 63-bit addressing of array elements (all indexes and length are represented by 64-bit long type). So, it's theoretically possible to create and process arrays and matrices containing up to 2^63-1 (~10^19) elements of any primitive or non-primitive types, if OS and hardware can provide necessary amount of memory or disk space.
  • Memory model concept allows storing AlgART arrays in different schemes, from simple Java arrays to mapped disk files; all necessary data transfers are performed automatically while every access to an element or a block of elements.
  • Most of algorithms are based on wide usage of lazy evaluations. Typical operations, like elementwise summing or geometrical matrix transformations, are implemented via lazy views of the source array or matrix.
    • For example, you can take a multidimensional matrix, rotate it (or perform any other affine or projective transform), and then extract a submatrix from the result. All these operations will be performed virtually (not requiring time), and actual calculations will be performed only at the moment of accessing elements, usually while copying the resulting matrix to a newly created one. Moreover, in many cases the libraries will "understand" itself, that the user wants to perform rotation or another transform, and will split the matrix into suitable rectangular blocks (fitting in RAM) and choose the best algorithm for this task at the moment of copying operation.
  • The libraries contain a wide set of image processing algorithms over matrices: linear filtering, mathematical morphology, rank operations, spectral transformation (FFT), etc.
  • There is also skeletonization and measuring of binary images.

Alien Arena
Do you like old school deathmatch with modern features? How about rich, colorful, arcadelike atmospheres? How about...retro Sci Fi? Then you're going to love what Alien Arena has in store for you! This game combines some of the very best aspects of such games as Quake III and Unreal Tournament and wraps them up with a retro alien theme, while adding tons of original ideas to make the game quite unique.

Aqsis
Aqsis is a Renderman(tm) compliant 3D rendering toolkit. It is based on the Reyes rendering approach. Features include programmable shading, true displacements, NURBS, CSG, Motion Blur, and direct rendering of subdivision surfaces.

ArtofIllusion
Art of Illusion can be used as a 3D Modeller and can be used to create movies. It can currently import and export Alias .obj files and export VRML97 files (without animation). To create movies, Art of Illusion has a offline renderer and set of tools to create animations. Highlights include subdivision surface based modelling tools, skeleton based animation, and a graphical language for designing procedural textures and materials.

Ayam
Ayam is a free 3D modelling environment for the RenderMan interface. Ayam features at a glance:

  • RIB (RenderMan Interface Bytestream) export and import.
  • Support for NURB curves and (trimmed) NURB surfaces, Boxes, Quadrics (Sphere, Disk, Cylinder, Cone, Hyperboloid, Paraboloid, and Torus), CSG, MetaBalls, Polygonal and Subdivision Meshes.
  • NURBS modelling includes normal and interpolating curves as well as extrude, revolve, sweep, skin, gordon, and birail objects with caps, holes, and bevels.
  • Custom objects that may freely implement their representations (using OpenGL and RIB) and even small GUIs to edit their type specific parameters may be written by the user and dynamically loaded at runtime.
  • Scripting interface: Tcl.
  • Miscellaneous: instancing, arbitrary number of modeling views, object clipboard, independent property clipboard, console, n-level undo.

BRL-CAD
BRL-CAD includes an interactive geometry editor, parallel ray-tracing support for rendering and geometric analysis, path-tracing for realistic image synthesis, network distributed framebuffer support, image-processing and signal-processing tools.

Blender
Blender is an integrated 3d suite for modelling, animation, rendering, post-production, interactive creation and playback (games). Blender has its own particular user interface, which is implemented entirely in OpenGL and designed with speed in mind. Python bindings are available for scripting; import/export features for popular file formats like 3D Studio and Wavefront Obj are implemented as scripts by the community. Stills, animations, models for games or other third party engines and interactive content in the form of a standalone binary and/or a web plug-in are common products of Blender use.

CGAL
The goal of the CGAL Project is to provide easy access to efficient and reliable geometric algorithms in the form of a C++ library. CGAL is used in various areas needing geometric computation, such as: computer graphics, scientific visualization, computer aided design and modeling, geographic information systems, molecular biology, medical imaging, robotics and motion planning, mesh generation, numerical methods...
CGAL offers data structures and algorithms like triangulations (2D constrained triangulations and Delaunay triangulations in 2D and 3D), Voronoi diagrams (for 2D and 3D points, 2D additively weighted Voronoi diagrams, and segment Voronoi diagrams), Boolean operations on polygons and polyhedra, arrangements of curves and their applications (2D and 3D envelopes, Minkowski sums) mesh generation (2D Delaunay mesh generation and 3D surface mesh generation, skin surfaces), geometry processing (surface mesh simplification, subdivision and parameterization, as well as estimation of local differential properties, and approximation of ridges and umbilics), alpha shapes, convex hull algorithms (in 2D, 3D and dD), operations on polygons (straight skeleton and offset polygon), search structures (kd trees for nearest neighbor search, and range and segment trees), interpolation (natural neighbor interpolation and placement of streamlines), shape analysis, fitting, and distances (smallest enclosing sphere of points or spheres, smallest enclosing ellipsoid of points, principal component analysis), and kinetic data structures. All these data structures and algorithms operate on geometric objects like points and segments, and perform geometric tests on them. These objects and predicates are regrouped in CGAL Kernels.

CGKit (Python Computer Graphics Kit)
The Python Computer Graphics Kit is a collection of Python modules that contain the basic types and functions to be able to create 3D computer graphics images (focusing on Pixar's RenderMan interface).

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