Reasons for the jagged borders of CAD text in CAD drawings and solutions

Thread Content

When using the HaoChen CAD software to create CAD drawings, it is often necessary to enter some text in the drawings for the convenience of drawing/viewing them. So what should be done when the CAD text boundaries in the drawing appear jagged? Let me give you a detailed introduction below! Reasons for the jagged text boundaries in CAD and solutions: 1. In fact, this phenomenon can be reproduced through very simple operations, which makes it easier to determine under what circumstances similar issues occur. Enter T and press Enter to select the range for multiple lines of text in the diagram; enter a few words arbitrarily, as shown in the figure below. Text will only show differences in whether its edges are smooth or jagged when using the operating system’s fonts; if your font setting is a CAD SHX font, please change it to an operating system font. 2. Select the text, enter CO, press Enter, and copy a copy of the text above it. Select the copied text, open the Properties panel (CTRL+1), and set the Z-coordinate to 10 in the Properties panel, as shown in the figure below. 3. After changing the Z coordinate, we can see that the edges of the text appear rather rough, but this is not obvious when the text is selected. You can use the ESC key to deselect, then zoom in to view the effect of the text, as shown in the figure below. The difference in the curved edges of these two characters is quite noticeable; the text below appears smooth, while the letters C and D above have distinct right-angle edges. This reproduces the second situation mentioned at the beginning of the article: in the same image, with the same view and the same font, the text appears differently, and the reason for this is that some of the text has a Z-coordinate. The solution is also simple: find a way, such as using quick selection to select these texts, and change their Z coordinates to 0. 4. Let’s reproduce the second phenomenon and see what causes the other graph. To switch the view to the left view, you can use the VIEW command to select the left view in the dialog and set it as the current view, or you can directly choose the left view from the view dropdown lists in the menu, toolbar, and panels. Enter the same text in the left view, as shown in the figure below. In higher versions of CAD, the UCS user coordinate system is automatically changed when switching views; as a result, the display of these text elements on the XY plane of the UCS coordinate system is not smooth. This situation is difficult to handle. If your text really needs to be placed in the left view, that’s the only option. If your drawing was accidentally placed in another view, you can cut and paste the text into the top view. 5. Solution: The display data generated by characters in CAD is inherently not smooth; it is CAD that applies optimization to the text rendering, which is what results in a smoother appearance. However, CAD applies such optimization only to characters in the XY plane, leaving other planes untreated, and this is why there is a difference in the appearance. If you place special emphasis on the text display effect, please type the text in a top-down view and ensure it has no Z coordinate. If only 2D drawings are being created, the text generally meets this requirement. If it’s necessary to write text on another plane, that’s actually fine; although there are some differences in the details displayed, it has little impact on the printed output. The above are the techniques for making the borders of CAD text added to CAD drawings appear smooth when they are displayed in a jagged shape in the HaoChen CAD software. I hope this will be helpful to everyone.