I want for an edition project to hide some parts of some characters. the aim is to simulate the idea that a character is about to be written, or is partly written. (in the story, someone had written something on the wall, but for any reason, he couldn't finish the signs, so someone who try to read them finally get some uncompleted signs) These signs/characters will be kanjis, chinese/japanese ideograms.
I am actually working with upTeX (upLaTeX), in vertical writing.











trimclippackage that allows you to clip parts of a character, see e.g. https://tex.stackexchange.com/a/486051/194703 for a nice example. – Nov 19 '19 at 16:59asymptotehas this, probably also PSTricks, and one may hack TikZ to do that. Once you have that path, you can draw or uncover it bit by bit. Whether or not this is a practical suggestion, I do not know. One of the reasons is that I do not have anything to play with, i.e. I never have used any Chinese/Japanese character in my documents, and I do not know how to get those in. – Nov 19 '19 at 21:51