Babacad lisp entmake5/19/2023 Note that it is an invisible attribute (code 70=1) Note that it is a closed POLYLINE (code 70=1) that inserts the symbols in case that they haven't been previously defined. This function is invoked from the C:COL program This Block will represent the high tension This Block only contains a visible text attribute. This block includes a POINT marker and a visible text attribute and Use of the code in these programs is subject to the terms of the GNU General Public License. Associate Professor.ĭepartamento de Ingeniería Geográfica y Técnicas de Expresión Gráfica Save the file thus created with the name LISTENT.LSP in a directory that figures in the ACAD environment variable (for instance, SUPPORT). To use the following code, select it in your browser from the "-PROGRAM BEGINS HERE-"to the "-PROGRAM ENDS HERE-" line, copy the selected text (Ctrl+C), open an editor (Notepad o Visual LISP) and paste it there (Ctrl+V). User functions col_def, niv_def y alt_def use the entmake function to generate Blocks that include graphic objects and both visible and invisible text attributes. To avoid redefining an existing block, if one with the same name already exists, it is advisable to previously explore the blocks table using the tblsearch function.Įntmake can also be used in creating NON-GRAPHICAL objects, such as layers, dimstyles etc.ĮNTMAKE-ing Blocks from an AutoLISP program If it succeeds in creating the entity, entmake returns the entity list or, if it is a block, its name. Once the complex entity's definition is concluded, (through the creation of the neccessary SEQEND or ENDBLK entities, according to the type of complex entity definition) data is validated and if it is correct, the entity is added to the drawing's data base. Each time entmake is used, the existence of this temporary file is checked and the new information is included. When entmake detects the creation of a complex entity, a temporary file is opened, in which the definition's data are stored. Copying may be done by selecting the text directly from the text window if you are using release 13 for WINDOWS, or implemented, for DOS users through a simple routine that writes the resulting code to a text file.īlocks and other complex entities (such as POLYLINES) must be created through several successive calls to the entmake function that define, one by one, their components (vertex, attributes, etc.). A simple way in which the programmer can obtain this list consists in previously drawing the required objects, and then using entget -typing, for instance (entget (car (entsel)))- and copying the resulting entity list. Where contains the information which is neccessary to the creation of the desired entity in formatted in a way which is similar to that which the function entget returns. The resulting blocks may contain any valid drawing entity, including text attributes. The entmake function is specially adequate to the definition of blocks without the need of previously drawing the component entities. This can be attained in a very efficient way by using the entmake function which creates, through direct access to the drawing's data base, the required new entities. Uniformity in the operation of the program is not assured, as the drawings may be subject to tampering by anyone.Ī way to overcome these difficulties is to define each time the required blocks, by means of the same program's code. The same is valid for changes in file names. Of course, a change in the structure of directories will render that program useless if the pertinent corrections aren't made to the ACAD paths. The user must take care of setting the required environment variables that insure that the program will find the required drawings. This forces the programmer to package the drawings with the code, implementing some kind of batch procedure to help in its installation. The portability of programs that insert blocks is limited by the need to include, with the program, the required block libraries.
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