Читать книгу SketchUp For Dummies - Mark Harrison - Страница 43

If you’ve spent any time fiddling with SketchUp, you’ve noticed all the little colored circles, squares, dotted lines, yellow screen tips, and other doodads that show up as you move your cursor around your modeling window. All this stuff is referred to collectively as SketchUp’s inference engine, and its sole purpose is to help you while you build models. Luckily, it does. Without inferences (the aforementioned doodads), SketchUp wouldn’t be very useful.

FIGURE 3-10: Visual cues tell you when you’re drawing or moving geometry parallel to a drawing axis.

FIGURE 3-11: The axes help you create 3D models on a 2D screen.