Use this geometry view test applet to become familiar with the geometry
view navigation controls. The rule of thumb is that all navigation is
done by shift-clicking and dragging, and that you're effectively grabbing
a point in the world and moving it using the mouse. Think of sticking
a thumbtack into the geometry and dragging around in some specific way.
Here's a cheat sheet:
- Shift-Click with the left mouse button and drag:
- This lets you pan the viewport, i.e. translate it around
inside the viewing window. It's like sliding a piece of paper around
on your desk with your finger.
- Shift-Click with the middle mouse button and drag:
- This lets you rotate the viewport about the center of
the window. Imagine sticking a thumbtack into the center of the
viewing window and spinning the paper around it.
- Shift-Click with the right mouse button and drag:
- This lets you scale the viewport relative to the center
of the screen. This doesn't have a very useful real-world analog,
since you can't change the size of a piece of paper (except by
cutting it!). But the point you clicked on follows the mouse.
If you drag closer to the center of the screen, the view shrinks --
everything moves towards the center. If you drag away from the
center, everything scales up.
I find this method of navigation to be very quick and intuitive. I hope
you do too!