Preparing CAD Drawings for Online Display



CAD drawings are rarely optimal ‘straight out of the box’ to display on a website or in a document. At a minimum they usually need to be ‘decluttered’ and, of course, converted to a format for use online.To get more news about download cad, you can visit shine news official website.
Tailor Made Software, Ltd. products in addtion to decluttering also have the ability to automatically process areas (usually rooms) and area names (usually room ids) and match them to produce clickable areas.
We will here look at preparing drawings for use with CADViewer, a javascript-based viewer that is highly optimized for viewing CAD drawings online, and as part of a PDF document.
CADViewer
CADViewer is Tailor Made Software’s javascript-based SVG viewer. It has been enhanced beyond the limits of the SVG format to add support for CAD concepts such as layers, block structure and attribute data. SVG (Simple Vector Graphics) is an international standard for the display of graphics. Despite its name, SVG is hybrid format that includes both vector and raster graphics.

AutoXchange 2022
Tailor Made Software’s AutoXChange program will convert AutoCAD DWG (Drawing) and DXF (Data eXchange Format), Microstation DGN (Design), Adobe PDF (Portable Document Format) and Autodesk DWF (Drawing Web Format) to SVG, PDF and a wide variety of raster formats including JPEG, GIF, PNG, TIFF, CALS and many others. It runs on both Windows and Linux systems.
Automatic Area/Name Matching
AutoXChange AX2022 Linkage Interface has the ability to automatically match certain area outlines and area names to create clickable areas on the SVG drawing. PDF has no direct equivalent. The same effect can be created in raster drawings via hotspot creation, where an external file is created with some sort of clickable region in raster coordinates. Many different methods of raster hotspots are possible.

Area/Name Matching relies on the drawing having the areas defined by closed polygons. Any of the three types of polylines (2D Polyline, Lightweight Polyline and 3D Polyline) can be used to define the closed polygons.
Room Layer/Text Layer
Many AutoCAD drawings, particularly those used for Facilities Management, will have close polygons defining the areas (usually rooms) on the drawing. This is called ‘polyganizing’ the drawing. These space polygons can be used to create automatic links from the drawing to an external data source such as a program or a database management system.

If the drawing has a room name or number, either as text on a given layer or as a block attribute with a given attribute tag (name), then the link can be established using the room number as the link key.

The Room Layer and Text Layer have to be defined using the -RL and -TL parameters, respectively. Text Layer processing works with either Simple Text or MText. Block Attributes can be used by defined the Attribute Tag using the -TAG parameter.