A Quick Tip on Publishing Drawings into Individual PDF Files

Recently our designers came across a requirement of publishing drawings into individual PDF files. For those who don’t know, here is the main setting you have to remember while publishing PDF files.

1. Click on ‘Publish Options’ button inside the Publish dialog box.
2. Inside the Publish Options window, select type as ‘Single-sheet file’ instead of ‘Multi-sheet file’ in the ‘General DWF/PDF options’ as shown in the image below.

Rest of the publish settings shall be same as publishing multiple PDF files. This tip might be familiar to most of you. Well, I have another tip for you to handle post publish PDF file names using windows command prompt. Using REN command with a combination of wildcard characters, you can easily rename the PDF files to standard names. For example, you would like to rename ‘Drawing_xxx-Model.pdf’ file to ‘Drawing_xxx.pdf’ format where xxx stands for unique characters. Here is the command for the above scenario.

REN *_???-Model.pdf *_???.pdf

As you can see in the above image, the file names have been modified using a single command line. The wildcard combination may vary from case to case. Have a look at windows commands and command prompt if you have not yet experimented with it. It will definitely help you to handle your day-to-day tasks easily and comfortably.

A Macro for Aligning Text, MText and Block Entities Horizontally and Vertically in AutoCAD LT

It has been a long time since I made my last post here. I was seriously thinking of dropping the blogging activities, mainly due to lack of unique ideas. But when I received an email request from a AutoCAD LT user for a macro for aligning objects like Text entities, I couldn't resist trying it out and sharing it with you people. My sincere apologies to all readers for leaving such a long gap. That said, to be honest, I don’t have any idea when I am going to publish my next tip over here.

Back to our post topic. These macros can be used to align entities like Text, Mtext, Blocks and literally any object that comes with an insertion base point, both horizontally and vertically.That means you can use this macro to align a Text entity with an MText or Block Reference. The only limitation you will come across is that you will have to select the entities one by one as opposed to selecting all together in AutoLISP or VBA programs.

You have already seen the power of combining DIESEL with the CAL command (I call it DIECAL for ease of use). Once again, I am going to use the power of DIECAL to accomplish our task. Here goes the first macro, used for aligning entities vertically.

*^C^C$M=$(if,$(=,$(getvar,useri5),0),osmode;0;_id;\userr3;'cal;rxof(@);\)useri5;0;select;single;\lastpoint;'cal;ins;@;\userr4;'cal;ryof(@);\userr5;'cal;rzof(@);\useri5;1;_move;p;;'cal;@;'cal;xof([getvar(userr3),0,0])+yof([0,getvar(userr4),0])+zof([0,0,getvar(userr5)]);

For you to get an idea how it works, please find the image below consisting of different types of entities.

The next picture illustrates what the align vertical macro can do with these entities.

With a small modification in the macro, you can use it to align these entities horizontally as well. Here is the modified macro for horizontal alignment.

*^C^C$M=$(if,$(=,$(getvar,useri5),0),osmode;0;_id;\userr4;'cal;ryof(@);\)useri5;0;select;single;\lastpoint;'cal;ins;@;\userr3;'cal;rxof(@);\userr5;'cal;rzof(@);\useri5;1;_move;p;;'cal;@;'cal;xof([getvar(userr3),0,0])+yof([0,getvar(userr4),0])+zof([0,0,getvar(userr5)]);

And here is the illustration of the macro functionality.

Before running the macro.

After running the macro.

These macros have been tested in AutCAD LT 2011 and works fine over there. I hope it will work with previous versions also, at least in the recent versions of AutoCAD LT. If you come across any problems, please feel free to post it here.

Many thanks to Adam for inspiring me to develop this :-)

Extracting 3D DWF Model Properties Using Autodesk Design Review API and AutoCAD VBA

A while ago I came across a situation where I had to extract line lists, valve lists, equipment lists and fittings lists from a DWF file. The DWF file was converted from a PDS model review file (DRI) using NavisWorks. After a few hours research on Autodesk Design Review API, I could extract all the required lists with a few lines of code. Ofcourse, with the help of fast dying AutoCAD VBA.

As the code makes use of CExpressViewerContol, you need to place it inside a form before running the code. You may use any COM compliant development environment in place of AutoCAD VBA. But I would like to stick to AutoCAD VBA till its last breath due to ease of use.

Sub ExtractDwfProps()
'### Extracts properties from model components of a 3D DWF file
'### By zoomharis@gmail.com
'### Date: 09/09/09

'### Based on Autodesk Design Review 2010 API

'### DWF specific references
'    -----------------------
'### AdCommon 1.0 Type Library
'### ECompositeViewer 1.0 Type Library
'### ExpressViewerDll 1.0 Type Library

'### DWF specific controls
'    ---------------------
'### CExpressViewerContol

On Error Resume Next
Dim oECV As ECompositeViewer.IAdECompositeViewer
Dim oSec As ECompositeViewer.IAdSection
Dim oEnt As AdCommon.IAdObject
Dim oProp As AdCommon.IAdProperty
Dim oCol As AdCommon.CAdCollection
Dim oCont As ECompositeViewer.IAdContent
Dim strDwfLoc As String
Dim strPropName As String
Dim strPropValue As String
'## Let me use a sample 3D dwf file
strDwfLoc = "C:\Dwf\3DModel.dwf"
strPropName = ""
strPropValue = ""
'## Open the dwf file in the viewer
CExpressViewerContol1.SourcePath = strDwfLoc
Set oECV = CExpressViewerContol1.ECompositeViewer
'## Iterate through the dwf model
For Each oSec In oECV.Sections
    Set oCont = oSec.Content
    Set oCol = oCont.Objects(0)
    For Each oEnt In oCol
        For Each oProp In oEnt.Properties
           strPropName = oProp.Name
           strPropValue = oProp.value
        Next
        '## Write code here to apply conditions to filter the list
        '## and send the extracted info into a text or excel file.
        '## Then clear the property name and property value strings
        strPropName = ""
        strPropValue = ""
    Next
Next
Set oProp = Nothing
Set oEnt = Nothing
Set oCol = Nothing
Set oCont = Nothing
Set oSec = Nothing
Set oECV = Nothing
End Sub

I have stripped down some of the code portion as it was specific my purpose. This is mostly in a general form and you may need to add/modify wherever necessary in order to run it in your system.

Creating Complex Selection Sets Using FILTER Command

It always make me wonder why the FILTER command is often overlooked by most of the AutoCAD users of current era, especially the newbies. It may be partially due to the fact that this command can get highly complicated at times depending upon the requirement. Ofcourse, it can be. But the power is always accompanied by complexity. Some of the advantages of this most powerful selection tool are;

• Creating selection sets based upon multiple criteria
• Creating logical groups without physically grouping it
• Flexibility to use transparently in between the commands

To make it simple (sorry, if you find it otherwise ;-), let us go by a sample. I have a Piping & Instrumentation diagram in which I need to create a selection set of major and minor process lines along with the line numbers. The newbie designer has drawn some of the lines as LINE entity and rest of them as POLYLINE entity. All the major lines are placed inside 'MAJOR' layer and the minor ones in 'MINOR' layer. The line number is placed inside an attributed block reference named 'LINENO' which resides in 'LINE_NUM' layer. The image below illustrates the filter criteria for creating the above selection set.

This is a nested filter criteria that makes it little difficult to understand. Nothing to worry. Let us split it into smaller portions so that we can analyse it easily.Following is the description of each portion in the order as shown in the image.

1. Object= 'LINE' OR 'POLYLINE'
2. Layer = 'MAJOR' OR 'MINOR'
3. Block_Name = 'LINENO' AND Layer = 'LINE_NUM'
4. Result of Step-1 AND Step-2
5. Result of Step-3 AND Step-4.

If you represent the whole thing as a logical expression, it would look like the following statement;

((( Object= 'LINE' OR 'POLYLINE') AND (Layer = 'MAJOR' OR 'MINOR')) OR (Block_Name ='LINENO' AND Layer = 'LINE_NUM'))

If you have a closer look at the filter, you will find that the innermost criteria gets resolved first and passes its result to the outer ones in nested filters. In the above case, the criteria to be executed at the final stage is the outermost one (Step-5).

This way, you can save very complex filters in your drawing for quick access at any stage of drawing development or review.

Quick Tip - Start an MText List with a Number or Alphabet of Your Choice

Last week I came across one of our designers using this nice trick and thought I would share it with you people. If you want to start a list inside MText window with a number or alphabet of your choice, try the following steps.

1. Type the number or alphabet followed by a period (dot) symbol.
2. Press the tab button after the period symbol
3. Type the content of the first line (optional) and press enter key.

That's it. Now you will find the list starting with the number or alphabet you typed over there. Shown below is a sample list created using the above steps.

In addition to that, a little research on the subject helped me to prefix the list numbers with a custom text, as shown in the image below.

Quick Tip - Generating a Drawing List from Different Folders Using Windows Command Prompt

Most you might already know that typing DIR *.dwg /B > ListFileName in the windows command prompt will provide you with a quick list of drawings in the specific location. What if you want to create a list with drawings from multiple folders? It's a really simple task. See the following sample to get to know the syntax.

DIR D:\Proj_Dir\Disc-1\*.dwg D:\Proj_Dir\Disc-2\*.dwg D:\Proj_Dir\Disc-3\*.dwg /B > D:\Proj_Dir\Dwg_List.txt

As you can see, the paths are seperated by a space. Remember that the /B switch is still required to get the bare format file names. The above command will list all the drawing file names in the folders Disc-1, Disc-2 and Disc-3 to the Dwg_List.txt file. To access windows command prompt, either type CMD in the run prompt or locate it via Start--> All Programs --> Accessories --> Command Prompt.

How to Use DWG TrueView to Optimize Your Drawing Files

Yet another reason to add DWG TrueView to your arsenal. DWG TrueView can be used as an excellent tool to optimize drawing files in batch. With facilities like purging, auditing, xref binding etc. TrueView has become truly irresistible for the CAD managers/administrators/users . Following are the steps involved in the process.

1. Start DWG TrueView and open 'DWG Convert' from the menu. It will launch the 'DWG Convert' dialog box.


2. Click on the 'Conversion Setups' button to open 'Conversion Setups' dialog box. Our idea is to create an exclusive setup for our optimization process.

3. Click on 'New' button to launch 'New Conversion Setup' dialog box and provide a meaningful name over there.

4. Clicking on 'Continue' button will pop up the 'Modify Conversion Setup' dialog box. Here I am going to use the basic settings. You may choose the options as per your requirement. Since our aim is to optimize the drawings (drawing format conversion is not our primary objective), I prefer to use 'In-place (overwrite files)' as my conversion package type. Choose the drawing file format based upon your company/client CAD standards (We normally use AutoCAD 2007 format as we are still on AutoCAD 2008). In the actions area, select 'Check and fix errors' and 'Purge drawings' check boxes as a minimum. Don't forget to provide a conversion setup description at the bottom in order to easily make out the setup objective later on.

5. Click 'Ok' to finalise the setup. You can see the new setup name listed in the 'Conversion Setups' list box.

6. Close the dialog box to go back to the 'DWG Convert' dialog box. Add the drawing files to be optimized using the 'Add file' button in the bottom side. Once the drawings have been added, make sure that the recently created conversion setup is selected in the list. That's it. Just click on convert button and the TrueView application will do the rest for you.

Once the setup is made, you can use the same setup every time you need to optimize the drawings. Really cool, isn't it? The entire process consumes only a little time and resources. In case you haven't installed AutoCAD 2010 yet, TrueView is a must for you as it can bring 2010 format files down to your AutoCAD version compatible format. What else you need to get it installed on your system? DWG TrueView and Autodesk Design Review are FREE and can be downloaded from the Autodesk site.