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1. deep use of the ArchiCAD out from our sake However go on with me from the File menu choose the command New library part Object This shows up the main window that helps you to manage a GDL object in the image below we can catch a glimpse of his main parts 00 Untitled 1 a Variable Type Name Yalue 6 ji gt X Dimension Dimension 2D Symbol 2D Full View 30 iew mm Preview Picture From the Script window tag menus we can now edit Master Script It s a text style window shared between 2d and 3d scripts We don t need to use it now but soon we ll be back on it 2D Script Here is the description of the flat geometry another way to show a 2d symbol into a plan view Here GDL must be used Of course it s less easy but much more powerful than the graphical way This window is used usually instead of the previous if both are used is this one that has the prevalence 3D Script Is a description of solid geometry here we need it to write many interesting and mysterious things using the fascinating instructions of the GDL Comments Less frequently used unfortunately Short text with comments or explanations of the object here placed will be showed into the preview area Hint turn on ballon help and move your mouse over this window some brief notes will be showed 01 02 A little bit of theory e Don t forget that GDL is a complete programmer s language For a proper use we n2. Lesson 01 page 01 ArchiRADAR http www archiradar com original developer translation Fabrizio Giammarco Those lessons come directly from my internet pages Referrals images quality impagination and language comes straight from there with all related limits These are the rules take it or leave it Foreword So here we are It seems that we re ready to begin our first GDL course LESSon somethin less than a real lesson But before to start we have to make our introductory statements You are using at least ArchiCAD 6 0 or ArchiCAD 6 5 You are able to use it you know his methodology and terminology You have familiarity in the management of the object libraries You are INTERESTED to learn You have your GDL manual NARWN e this point program version is the less important it s enough to know that when I make some specific references for example click the icon down on the left I m referring at those versions in particular If a thing isn t there well you ve to look for it elsewhere It s clear that this wouldn t be a complete GDL programming course It would help us to take some confidence with the language to understand the principles that regulate his grammatical operations and will allow you to look at the user manual without the fear that characterizes first approaches of the newbies on the programming stuff and that often make them to cl
3. arriage returns and spaces between parameters Please note that are called parameters either keyword parameters that object parameters 01 04 So here we are variables Our Mr BLOCK seems to be too much square Set his preview mode to hidden lines or shaded Back now to main object window try to modify A and B values x and y object s dimensions Strange nothing happens We ve only obviously missed to update GDL text the script don t make any call for those variables Our prism is standalone and a bit outlaw we ll try to take it under our control Into 3D gdl script window replace 2 and 1 5 parameters with A and B letters BLOCK Ay Bye Os Let s try to modify A and B values into main object window Amazing something happens A and B are now two variable names something that can assume any of a set of values This will be useful inasmuch as we can modify A and B values without editing 3d script gdl interpreter built into ArchiCAD automatically update it for us We want more now what about a variable height It s easy only another click on the New button A new line will come up with a variable called C Replace C letter with Alt we ve just renamed a variable for a better readability We can also change his name properly his descriptive name his kind and his value Type is a pop up menu that allow what kind of values can be recogn
4. cated to our works It s better to create a personal library folder Using only standard library folders for our new objects can give us some problems something like lost ALL our stuff if updating or re installing our ArchiCAD application Now by 2d plan view activate Object tool ArchiCAD he s got a lot of smarts set up our last creature like first choose Take a look at this window for some brief thoughts Object Settings Gitnemo spersonattib PA 2 Beaji choose other object gt Parameters pa 20 at 15 eat 0g NEN Show on All Stories E One Story Up A One Story Bown gt gt Furniture amp Equipment e our parameters where placed into parameters list default parameters have a their own place e object s default values are the same setted when it has been saved e every HotSpot placed on the symbol is now an handle we can use it for snaps First HotSpot placed will be object s default insert point all HotSpot can be used to select object Place object into our 2D plan view Works fine Note that HotSpots placed on extreme object s points let us to stretch it to our needs The ones on the sides only on wide or lenght the others on the corners resize contemporaneously wide and lenght This ends Lesson One
5. eed to remember that e has an his own firm sintax e require a bit of discipline and much attention more important when you take the first steps e when it works and finally it always works give to the programmer great satisfaction On the ground of all there is Cartesian system an origin and three orthogonal axis that define X Y Z directions into the space Into this space we can define a solid using GDL instructions Easier of them is BLOCK command Like most of you can imagine it s used to describe a parallelepiped a block exactly His syntax is BLOCK Pl p2 P3 W im GDL instructions starts with a keyword and needs parameters Their specific meaning can be easily hehehe learned with a little help of gdl handbook or by the in line help if installed In this particular instance the three parameters describe length width and height Exactly in this order they are used to show dimensions along X Y and Z axis Let s start a deeper analysis it s clear that while the keyword like all commands must be used exactly a parameter only used to describe values allow more flexibility e GDL isn t upper or lower case sensitive but we strongly suggest to use upper for commands lower for all the rest e a space at least is required after a keyword e parameters must be separed by commas spaces aren t required but maybe can help to read and to correct the instructions e don t place commas between a keywo
6. ized by our variable Smarter users surely noticed a division between our and preferred values A and B for objects much more for doors windows lamps zones Our variables can be fully edited as long as preferred Modified script must be now something like this BLOCK A B Alt All values can be now entirely edited and our object is fully parametric 01 05 Toccata and fugue into 2D Like as seen before there are two different GDL windows one for 2D an one for 3D Maybe this seems to be a strange thing but they bring forth two different kind of results For this particular object we don t use a script to generate a 2D symbol but like an outcome of some particular actions Go to 3D window of our object From Image menu choose 3D Projection Settings and select a Top view from Parallel Projections with 270 camera azimuth If you get a look at the left corner there is a Add to Symbol button near to the hide show 3d axis this button simply add our current view to the 2D part of our object We can now edit this symbol add a a diagonal line across his corners and some hotspots one for each corner and one in the middle of every side 01 06 Much effort and not much to show for it Open Archive menu and choose Save It works just like a regular project With 3D window active we ll be saved only a picture otherwise we ve just created a new library object Call it First try and place it into a folder dedi
7. ose it comfortless If you have any particular requests or ideas don t understand something or if you find every kind of error then please get in touch with us A direct answer is much probable but isn t guaranteed corrections on the pages are sure with the only limit of the time available For all of those that want a deeply knowledge of this language 1 can suggest David Nicholson Cole s GDL Cooking Books LESSON 01 Its real name must be lesson zero Is for all of you that don t know REALLY nothin about GDL 01 01 Let s take some acquaintance with the interface We need to start far from here Long time ago in a far away galaxy uh little mistake In order to use an object into an ArchiCAD file we need to choose the correct icon from the tools bar it s shaped by a chair to change his settings or to choose another one double click on the icon or press left arrow The one that is opened is the object settings window it would be a typical dialog window with stacked cards buttons and icons Parameters plan and section attributes model attributes list compute attributes It s full up but it s the only window that you must use in order to play with an object into an ArchiCAD project Really different is the life of an object creator It must manage eleven various windows Feared Well we don t need necessarily to use all of them for example compute section is for a
8. rd and the first parameter e after last parameter isn t admitted any comma e his measure units are the same of your current archicad settings 01 03 Some pratice Our first step into GDL world will be into a box a box of 2x1 meters and 80 centimeters high Into new object s window choose GDL 3D text window Write this instruction BLOC sy bebe Usp Despite your computer is set up to use commas as number separator into GDL text a period is needed Let s try to activate 3D view If all is going smooth now you will see a prism It s rough but it s just our own little creature Take a look at the bottom left of 3d window there are two icons to activate de activate Cartesian axis With axis view turned on we can now see three coloured arrows they show X Y and Z axis Our object must have a vertex exactly on the system origin this is one of BLOCK characteristics Other commands give more freedom but aren t so easy to use Some of them could have many parameters A slab is nothing else that a simple prism with many vertexes and for each one we need to define an X and Y coordinate It s now essential to understand how to write a multi line command to start new paragraphes is allowed without any command prejudice provided that a comma must be placed at the end of every line with the exception of the last line Remember for a better reading after every parameter an his comma we strongly suggest a wise use of c
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