I leave you to ponder on the end of this sentence. We began to give intelligence to objects. The idea then came to no longer represent and manipulate only the primary objects and clusters of primary objects such as blocks, but actually existing objects such as walls, windows, furniture, etc. Much later, we started using 3D CAD, particularly in the field of mechanics, and later, in the field of architecture. But we still stayed in the symbolic field. Things have started moving when we could assemble some primary objects such as lines, and make a block of them. The 2D Computer Aided Design has long been the standard in computer drafting. No other solution than the good old drawing board. It assumes that the draftsman, and all those who read his plan, know about the industry, conventions and symbols to represent reality.įor many years, it was the only way to work when people did not yet have computers. This tells a lot about the empiricism of the method.
We are sure that this is not a pipe, because it is virtually impossible that a pipe is located here on the plan, without putting the building in danger of collapsing.
We know this because a wall is conventionally represented as such. Thus, a double line represents a wall in architectural drawing. This is typically how the draftsman and AutoCAD work, creating geometric objects representing real objects. At first, I drew lines that were supposed to represent real things. Hello, I'm going to talk today about a subject dear to my heart, programming languages and AutoCAD.ĪutoCAD is dear to my heart because I worked with it for very long, about 20 years.
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