Microstation3d

3D View Control
Module Overview
All the 2D view controls, such as Fit View, Zoom In and Out, Window Area, and Pan, can be used in 3D. As in 2D, elements to the left, right, above, or below can be excluded from a view by zooming in or windowing so that the elements are outside the view's area. There are also a number of 3D specific viewing tools. 3D views have depth. You can exclude the display of elements located in front of, or behind, an object by applying a Clip Volume or Clip Mask. It is a good idea to practice View Control tools for 5 minutes at the start of every 3D session, before doing any other work.

Module Prerequisites
• Knowledge of MicroStation 2D view controls

Module Objectives
After completing this module, you will be able to: • Use 3D view control tools to navigate in 3D space

Sep-09

5
Copyright © 2009 Bentley Systems, Incorporated

3D View Control

Introductory Knowledge

Introductory Knowledge
Before you begin this module, let's define what you already know.

Questions
1 2 3

True or False: You can view a 3D design from any direction and even move inside it. Define a MicroStation model. In 2D models, you work on a design plane. What is the working area in 3D?

Answers
1 2 3

True. Each model is an independent graphical space, with its own origin point, units of measurement and can be 2D or 3D. In 3D models, the 2D design plane becomes a 3D cube, known as the design cube.

View Rotation
When you work in a 2D model, you can rotate the view. Visually, this is like rotating the xy‐plane about a perpendicular, or z‐axis. When you are working in a 3D model, you can rotate the view about any axis (the x‐, y‐, or z‐axis). The visual effect on screen is like rotating the design cube. You can rotate any view to a standard rotation or to any arbitrary view orientation. When you dynamically rotate a view, you can use any of the following methods. Using the mouse • • • Shift key + middle mouse button to