LTB-Light is an application that permits natural and artificial lighting calculation with a color radiosity method applied to a finite elements plan. LTB-Light runs under Apple Macintosh and implements OpenGL. Data management take places through an internal powerful CAD system, directly in a perspective view. It is possible to introduce flatten surfaces with colored glazing, furniture, curved surfaces like cylinders, cones, ellipsoids, hyperboloids and complex objects like cross vaults. LTB-Light is able to share information with other CADs through DXF and PICT files. Light sources are totally managed inside the main program; it is possible to import, show, modify and use the IESNA LM-63 photometric data files (ASCII text file commonly used by North American lighting fixture manufacturers) EULUMDAT (european standard) and even PICT files (the program can convert a drawing in a photometry!); photometric data are modelled through 36 "C" (azimuth) curves and 181 "gamma" (zenith) angles, while lamp color is controlled by its color temperature or RGB color. Calculations permits to control levels of illuminations, allocated energy amounts, correct positioning of light sources (type, numbers, power,...), direct and reflected colors. LTB-Light results (Horizontal, vertical along X+,Y+,X-,Y- directions, semi-cylindrical and main camera-direction Illuminament; Luminances; Daylight Factors; RGB coordinates; Contrast control C.R.F.; Glare control TI, G, U.G.R., C.G.I. and G.R.; Lighting Pollution) will be presented in black and white, 8-colors or true-colors perspective view for the whole model and for every object in the scene. For every object in the scene it will be possible to have also planar-projected mapping with values-mapping and/or curves-mapping overlapped. It is also possible to print or export these results as TEXT, Formatted Text (RTF), PICT, DXF file or by "copy-paste" procedures, and to export the RTF-formatted estimation of the whole project (fixtures, wires and special pieces) in the implemented currencies. LTB-Light has a series of powerful tools that permit to optimize Your projects: a 'CIE module' to precalculate the needs of simple rectangular room and a 'Road tool' to find the best roads installation as regards fixtures, pole distance and height.
Features:3D interactive workspace environment with full use of OpenGL and a native Mac OS X interfaceShares information with other CAD via DXF and PICT filesUses standard IESNA LM-63 photometric data files (USA) and EULUMDAT (Europe)Controls Illumination levels, energy, sources specsOutput in various standard formatMany powerful tools inside
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History updates (Complete changelogs since the listing on this site)
-More preference options
-Result export using also EN13201 rules
-Various bug fix
Predicted future versions and notices:
The doDownload.com constantly monitors the update of all programs, including information from the LTB-Light 184.108.40.206 changelog file, however sometimes it can happen that data are not complete or are outdated.We assume that author continue's to develop 220.127.116.11 version with further advanced features, and soon you will be informed. Equally important 18.104.22.168 upgrades of the program we will continue to monitor. Full LTB-Light description has been compared with the overall software database and our algorithm has found the following applications (are showed below).
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