or whatever way to use to make a correct and precise drawing? because its fun to art that way? like say a propeller or a bike wheel in curvilinear perpsectice turned to a certain angle??? yeah i mean i hate making wrong haha in technical drawing the image has like profile side and front and each has their own length and width so, supposedly these data builds an image right? creating a horizontal or diagonal or vertical lines on paper right? only these 3 lines right?? ne? anyong? then they are positioned relatively right? based on some, graphic engine formulations because computer makes, absolute judgement of sizing? what exactly is the algoryrhm again?