Revit Architecture 2008

Autodesk Revit Tutorials, Revit Families, BIM Revit

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Home CHAPTER 1 Intrduction What to expect from BIM Where can you go from here The bottom ine CHAPTER 2 Introduction Working with Revit Parametric Elements The Revit User Interface Using the Project Browser The Bottom Line CHAPTER 3 Introduction Selecting, Changing, and Replacing Elements Editing Elements Interactively Other Useful Tools The Bottom Line CHAPTER 4 Introduction Starting a Project with a Custom Template Settings for Graphic Consistency Creating Custom Annotation Tags Creating Custom Title Blocks Creating a Custom Title Block with the Family Editor The Bottom Line CHAPTER 5 Introduction Wall Types Floor and Roof Types Ceiling Types Door and Window Types Stair Types Types and Type Catalogs Graphic Overrides of Host Objects with Complex Structure Additional Global Project Settings The Bottom Line CHAPTER 6 Introduction Modeling with Revit Principles of Modeling in Revit Where Can You Go From Here? The Bottom Line CHAPTER 7 Introduction Massing Studies The Bottom Line CHAPTER 8 Introduction Conceptual Design and Early Studies The Bottom Line CHAPTER 9 Introduction Revit Design Options The Bottom Line CHAPTER 10 Introduction Modeling Parametric 3D Families Choosing the Right Family Template Types of Families Smart Workflow: Nesting One Family into Another Parametric Arrays in the Family Editor Encoding Design Rules Building a Parametric 3D Family The Bottom Line CHAPTER 11 Introduction Basic Walls: Advanced Modeling Techniques Curtain Walls: Advanced Design Techniques Roofs Roofs and Slabs: Advanced Shape Editing Railings and Fences The Bottom Line CHAPTER 12 Introduction Drawings with Shadows Color-Coded Plans and Sections Elevations That Convey Depth Working with Perspective Views Rendering Creating Animated Walkthroughs Exporting to Other Formats The Bottom Line CHAPTER 13 Introduction Preliminary Design Tools Calculating Areas Schedules Using Schedules for Preliminary Cost Estimates The Bottom Line CHAPTER 14 Introduction Sustainability in Architecture Preliminary Design Tools Tracking Recycled Materials Window Surface Percentage vs. Room Area Energy Analysis The Bottom Line CHAPTER 15 Introduction Annotating Your Views Displaying Information about Rooms Schedule Keys Tags Shared Parameters Text and Keynotes The Bottom Line

Rendering

The Rendering Design Bar Materials Raytracing the View Rendering Best Practices
The Rendering Design Bar
To render a view, enable the Rendering tab on the Design bar by right-clicking the Design bar and selecting Rendering. Once the tab is open, you’ll see commands specific to a rendering workflow. The most important button in the tab is Settings, which opens the Render Scene Settings dialog. This dialog (Figure 12.25) contains all the variables used to raytrace a view, such as lighting, back-ground, view culling, and quality options:
Figure 12.25 The Render Scene Settings dialog
Let’s look at these settings in more detail, because they affect the overall look and feel of your renderings.
Lighting the Scene The options in the Scene Settings group control lighting parameters. Let’s look at them. Sunlight For renderings, AccuRender will, by default, use the Sun And Shadows Settings set up in your view for the sun position. Keep this in mind: Even if your view doesn’t have shadows enabled, when ren-dered it will use the setting associated with the view. You can check what sun position the view is using by accessing the Advanced Model Graphics dialog. You can choose to override this behavior and use AccuRender features for setting the sun angles; do this by deselecting the “Use Sun and Shadow Settings from view" check box. When you do so and click the Sun button, you get the same functionality as the Revit Sun And Shadows Settings, but presented in a more graphical manner (Figure 12.26).
Figure 12.26 Sun and Sky Settings dialog
As you can see, the controls for setting Azimuth and Altitude are graphical and give you a better idea of the sun angle with respect to North, South, East, and West, as well as the height of the sun.
Interior Lights Revit renders a scene with artificial lights (lighting families), which are good for studying interior views. Light families are set to be on by default, but you can turn them off if you desire. If you’re doing an exterior rendering, Revit prompts you to turn off the interior lights prior to raytracing the view: We recommend selecting Yes to improve rendering performance. You’ll only want lighting fam-ilies “On" for exterior renderings if you’re doing a nighttime or dusk shot where you definitely want to see the effect of artificial lights. Otherwise, keep the lights off, because they slow down the cal-culation and don’t add anything meaningful to the view when the Sun is on. All Revit lighting families have the ability to cast light when rendered. You can turn off lights in a view and also dim them using the Lighting button in the Render Scene Settings dialog or from the Rendering tab. You should turn off lights for these reasons: 1. To create desired effect in the rendered view. 2. To limit the number of lighting calculations AccuRender must perform Click the Lighting button, and you’re taken to the Scene Lighting dialog (Figure 12.27). Here, each light in the model is listed and can be turned on and off. When you select a light in this dialog, it turns red in the view, indicating its location. It’s possible to group lights together for better control if collections of lights are turned on/off in a view. Clicking the Groups button prompts you to give a name to the group, after which you can interactively pick lights and add them to the light group. Each click adds or removes lights to the named group. Note that this is a specific type of workflow geared for lights only: Don’t confuse it with Groups functionality
Figure 12.27 Lights can be turned on and off in the scene
Figure 12.28 shows the Scene Lighting dialog after selecting four lights and adding them to a group named Interior Lights.
Figure 12.28 The Scene Lighting dialog controls which lights are on and off in the view when rendered.
To re-edit a light group, click the Light Group button in the Rendering tab. This allows you to make new groups, edit existing groups, or delete groups using the Options bar: When you’re editing a light group, lights in the group are shown in red Background The background helps give your model some context by using an image, color, color gradients, or procedural sky. If you intend to add your own background and effect using an image editor like Photoshop, set the background to a solid color to make it easy to key out later. This is a common practice, and it’s recommended to get the best results. Nearly every good rendering we’ve seen has gone through some post-processing in Photoshop. The AccuRender automatic skies aren’t convinc-ing and tend to be too bright, so try to avoid the temptation to use them. To set up a background for the rendered image, click the Environment button in the Render Scene Settings dialog. In this dialog, you can choose from several different sky options. Selecting Background Image in the Advanced section enables a new tab in the dialog, from which you can browse to an image on disk to use for the background (Figure 12.29). This can work out nicely if you’ve taken a digital photo of the site, and you know the position of your camera in the model is relatively close to the position where you took the photo. For that scenario, you have to eyeball the camera placement and focal length, because Revit doesn’t have a built-in method for exactly match-ing a photograph with a camera in the model.
Figure 12.29 The Environment dialog allows you to define the background of the rendered image