Lisp Tutorial Autocad

About the Tutorial LISP is the second-oldest high-level programming language after Fortran and has. About the Tutorial. AutoCad Igor Engraver.

An AutoLISP program doesn’t have to be difficult. We can create simple LISP program and get many benefits from it. It’s not just about speed up the drawing creation, but also to maintain our standard.

In, we discussed how we can use block to create grids. This will ensure the users (or you) to use the same block for every drawing. Now let’s see how to control the other properties you need to control: layers and styles. A4 Tech Pc Camera H Driver Gratis. Let’s explore the possibility to use it to control our drawing standard. Working with layers Layers are the most important thing to manage our drawings.

If you’re not familiar with layer standard,. Changing the current layer We can change the current layer using setvar.. Current layer variable is controlled by CLAYER. (setvar 'CLAYER' 'LAYERNAME') Sample: creating text Now let’s try an example. We want to create a LISP program to create text, and use a default layer.

Windir System32 Mstsc Execution. This is what we do: • Get current layer and save it to a variable. • Set current layer to a different layer.

In this sample, annotation layer. • We ask for required data for creating text. In this sample we ask for text content and position. You may want to consider ask for height and rotation angle. But it’s not necessary in this sample.

• Set the current layer to previous layer. This is the code after we put it all together. Advertisement - Article continues below (defun c:cntext () (setq oldlayer (getvar 'CLAYER')); get current layer (setvar 'CLAYER' 'A-Anno'); change layer to annotation layer (setq textcontent (getstring ' Type Text: ')) (setq textloc (getpoint ' Text Position: ')) (command '_TEXT' textloc ' ' textcontent);create the text (setvar 'CLAYER' oldlayer);restore active layer ) Check for existing layer It should works. But we still have a problem. What if the layer doesn’t exist? AutoCAD returns error warning.; error: AutoCAD variable setting rejected: “clayer” “layername” We need to check if the layer exist or not first. We can do it by using this code: (setq flag (tblsearch 'LAYER' 'A-Anno')) Then add conditional IF like this: (if flag (PUT WHAT YOU WANT AUTOCAD TO DO HERE) (ELSE DO THIS) ) We have discussed about.