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• radout 4.0.1 - Autocad R14 - Windows 32 bit
• radout 4.0.1 - Autocad 2000 - Windows 32 bit (with ACIS support)

Now also on GitHub.

Radout is an application for Autocad/Intellicad, exporting geometry data to the Radiance lighting simulation package.

Radout is conceptually based on the old torad.lsp program, which provided the inspiration and some of the understanding of autocad's workings to the original author Philip Thompson.
The main differences are:

• Compiled in C/C++, executes many times faster.
• Creates a simple rif file for immediate input to rad(1).
• Some bugs avoided, some new introduced.
• Much better arc/bulge approximation.
• Exports light weight polylines in R14 and up.

Radout is an integral part of the architectural lighting design software package Rayfront, which offers complete control over all parameters of Radiance simulations.

• Translates all hiding/shading entities from Autocad (and some more, though support for ACIS solids in R14 and Autocad 2000 will only be available together with Rayfront).
• Entities can be selected on screen for selective export.
• Entities will be sorted either by color or by layer. The sorting results in seperate files written for every layer or color. Floating layers and colors within blocks are fully supported.
• Other files created optionally can contain material definitions, a setup of sky and sun, and a rif file.
• Only the entities that are visible (that is their layer is on and thawed) will be exported, even when nested in a selected block. This gives you another method of filtering elements of your drawing especially usefull when you want to update only part of a scene.
• The layer name or color number will be part of each respective filename to make it an unique identifier.
• You have full control through a interactive dialog box.

Entities exported (by choice):

Autocad/Intellicad entities	Radiance objects
3dfaces	triangular or quadrilateral polygons.
extruded or flat traces	triangular and/or quadrilateral polygons.
extruded or flat solids	triangular and/or quadrilateral polygons.
extruded or flat circles	rings and quadrilateral polygons.
extruded arcs	quadrilateral polygons.
extruded lines	quadrilateral polygons.
extruded 2d-(lw)plines	quadrilateral polygons.
wide 2d-(lw)plines	multilateral polygons.
closed 2d-(lw)plines	multilateral polygons.
3d-meshes	triangular or quadrilateral polygons.
polyfaces	triangular or quadrilateral polygons.
points	spheres or bubbles.
ACIS solid modelling entities	triangular polygons.

The MIT License (MIT)

Copyright © 1994-1998 Philip Thompson, Boston MA, USA.
Copyright © 1999-2016 Georg Mischler, Munich, Germany.
 
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.