gCAD3D

Features Principles of operation What gCAD3D can and cannot do VWR viewer MAN manual text entry CAD interactive graphic modelling Multi-model support Interactions Add-On Programs RemoteControl Processes ScriptPrograms Plugins Tutorial-videos Functions for documentation Codes - Formats gcad file format Installation Build Development-tools Development-documentation License Authors Support Development History of gCAD3D

What gCAD3D can and cannot do

It can Import and display data from Iges, Step, wire frame and solid objects Create and modify wire frame elements Create surfaces Create simple solid bodies Assemble user-created ancillary programmes Export wire frame elements as Dxf and Iges Export surfaces as Vrml-1, Vrml-2, obj, tw Iges It cannot yet Create or modify complex solid bodies

Multi-model support

A model can consist of multiple models (sub-models). A sub-model can be stored within a model (an internal sub-model) or be imported from external data (an external sub-model)

Internal models

The model name must not include a path (and no '/' or '\'). During the processing of sub-models the sub-model name is cached in /tmp/Mode_ . All internal sub-models are saved inside the model file

Creation of sub-models sub-models/move main → new sub-model Copies all objects of the active main model to a sub-model sub-models/create new sub-model Construct and activate a new sub-model sub-models/load sub-model from file Load a native model from data into a new sub-model
Using internal sub-models in Cad mode:

with the function 'M-int.Modell' Select sub-models from a list (using MM middle mouse button) or by selecting a prepared sub-model; Define the model instance position. Using internal sub-models in Manual mode:

by keying in as
M20=”subModell” P(0 0 0) DZ DIY

External sub-models

For these models an external model file must be given. The model name must be a symbolic path. The model file must be in a directory that can be referenced by a symbol; See symbolic file names. External models can only = mock-up models (ie Wrl), but cannot include internal or external sub-models. External sub-models are internally cached. Use of external sub-models in Cad mode Use function 'M-ext.Modell' Selecting sub-models from a list (middle mouse button in the graphics window) or by selecting existing sub-models; Define the instance position Use of external models in Man mode: By keying In as M28=”Data/Mod1.gcad” P (0 0 0) DZ DIY

Functions for documentation

- Display of 2D drawings, 3D models and images in the same display space. - drawings/ models can be generated by scripts / templates - all display objects can be combined with interactions

Development History of gCAD3D 1995 The first version named xcad only for Linux and AIX. Graphics and User Interface with X11. 1998 First version with the name gcad. Graphics with OpenGL (Mesa), with GTK user interface. The name corresponds to the abbreviated version of GTK CAD. 1999 gcad was renamed gCAD3D (since approximately 1998 there also a gcad by Inigo Serna Robledo did exist) 2003 New CAD engine. Ported to MS-Windows. 2005 Step-import. 2006 Textures. 2007 Standard Parts (catalogue). 2008 Script progams. 2010 64-bit-Version Linux. 2011 neutral GUI-Interface, Gtk3-Interface 2012 Debian-packages 2013 RemoteControl, Processes. 2015 License changed to GPL-3.