Alvin - I will do a search for your past posts on jaggies.
"Jaggies". Just think about it in a common-sense, physical way. Our screens are made up of pixels. Rectangles. I think they are squares, but they may not be.
Things-- such as a Line, a Curve, or an Arc, or even this text-- are displayed on our screens via assigning color to these pixels. In a typical classic
TurboCAD, they would all be set to display White, until told otherwise.
So you insert a Black Line. It's ____ long, at 0Â°. Fine, the screen can handle that; depending on it's Pen-Width value, the screen assigns to one-or-more rows
of pixels, the "command" to display Black.
But what if you rotate that Line 1Â°, and Zoom-Extents so that it runs the full-length, east-to-west, of your TurboCAD desktop. That's a tough assignment for the screen, but it accommodates. Using these 1600-columns and 900-rows of pixels, how is it going to accurately-as-possible display this very slightly askew
Line? The screen says, "well, every pixel the Line "touches", I will assign it to be Black. So that may be a few on one Row-of-pixels, than up, and a few on the next-Row-of-Pixels, and so on.
The same with slight
Arcs, Curves, and the like.
When we Zoom in real close, there is less angle of that Line being represented on the screen; hence, the screen is assigning more portion of Rows/Columns-of-Pixels to Black, before it moves up and assigns other portions of Rows/Columns-Pixels to display Black. The result-- as observed by the User-- is what appears to be smoother... less jaggies
I hope that begins the making sense of it-- the ability to grasp it.
I ask that the more computery-folks
clarify any errors, omissions, or over-simplifications I may have made.