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K-3D is the free-as-in-freedom 3D modeling, animation, and rendering system for GNU / Linux, Posix, and Win32 operating systems. K-3D features a robust, object-oriented plugin architecture, designed to scale to the needs of professional artists, and is designed from-the-ground-up to generate motion-picture-quality animation using RenderMan-compliant render engines. We strongly recommend the Aqsis render engine for use with K-3D.

K-3D's innovative interactive tutorial system will introduce you to basic use of the program. New tutorials can easily be recorded and shared with the rest of the community.

K-3D allows you to create and edit documents in multiple realtime OpenGL solid, shaded, texture-mapped views. You can even model, animate, and interact with animations while they play back for maximum productivity!

Modeling

* Powerful scene graph Procedural Modeling with complete modeling history.
* Selection: Objects, meshes, faces, edges, patched, curves, point groups, points.
* Geometry types: Polygon, NURBS, subdivision, blobby.
* 3D Primitives: Cone, circle, cushion, cylinder, disk, grid, paraboloid, polyhedron, sphere, torus.
* Boolean modeling operations (using GTS library).
* Text: FreeType2 support.
* Instantiation: Create duplicates without adding gemometry to the scene.

Supported Formats

* Geometry Formats: Wavefront OBJ, GTS and a raw format are fully supported, other ones are optional and depend on PLIB installation. Experimental plugins include OpenFX, OFF, RIB and X formats.

* Image Formats:
o JPEG (all platforms).
o PNG (all platforms).
o TIFF (all platforms).
o OpenEXR (requires optional OpenEXR plugin).
o BMP (requires optional ImageMagick plugin).
o SUN (requires optional ImageMagick plugin).