【转帖】simple Question -- Of Drawings In Dwg
 

simple question -- # of drawings in dwg
simple question -- # of drawings in dwg
how do i find out how many pages/drawings are in a dwg? can a single dwg file contain multiple drawings? if so, how do i find out how many there are? also, can anyone recommend a good overview doc for terminology -- i am going through the samples and understand a lot of the api for what i need to do, but i need basic orientation documentation (this is what a dwg basically is, what it has in it, definitions, etc).
last edited by loumf; 3rd july 2007 at 12:06 pmfff">. reason: better subject
usually a .dwg file is called drawing. (dwg is abreviation for drawing).
drawing can contain a number of layouts. model layout (or model space) contain 2d or 3d geometry. other layouts are paper layouts (paper spaces). they usually represent paper pages for printing. paper layouts usually contain 2d geometry. model geometry is visible in paper layouts via viewport entities which specify view parameters (which part of model space is visible in viewport, view direction in 3d space etc.)
for example single 3d object residing in model space can be visible in single (or different) paper layouts from different points of view (directions) with different scales.
also note that a dwg file (drawing) can contain references to other dwg file (external references). they are very similar to ordinary block insertions but the contents of block resides in other dwg file.
probably the easiest way to get an idea about basic terms and concepts (blocks, layers, text and dimension styles etc.) is some book like "autocad for beginners" (unfortunately i don't know the exact book to recommend).
sergey slezkin