Autodesk 00128-051462-9310 - AUTOCAD 2008 COMM UPG FRM 2005 DVD, Руководство пользователя

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Creating a Mass Element
Use this procedure to add a new mass element that has the properties specified in a selected massing tool. To specify
settings when you add a mass element, see “
Creating a Mass Element with User-Specified Settings ” on page 578.
Shapes of Mass Elements
To create mass elements, you start with basic shapes and manipulate them for the desired result. The twelve basic mass
element shapes are Arch, Barrel Vault, Box, Pyramid, Isosceles Triangle, Right Triangle, Cone, Cylinder, Dome, Sphere,
Gable, and Drape. You can also create custom mass elements by extruding and revolving profiles and by creating free
form mass elements.
You can modify a mass element based on its shape. For example, you can specify the width, depth, and height of a Box
mass element, and the radius and height of a Cylinder mass element. For more information, see “
Editing Mass Elements ”
on page 588.
Specifying the Size of Mass Elements
You can graphically specify size parameters of mass elements.
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A rectangular mass element is any element that has four lines at its base, such as an Arch, Barrel Vault, Box, Gable,
Pyramid, Isosceles Triangle, or Right Triangle. You can graphically specify the width, depth, and height of rectangular
mass elements.
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When you create a circular mass element, you graphically specify all the valid size parameters. Circular mass
elements are Cone, Cylinder, Dome, and Sphere.
Some parameters are fixed during input; for example, the radius of an arch is one quarter of the width, and the rise of
a gable is half the height. These parameters can be edited after the mass elements are placed in the drawing.
1 Open the tool palette that you want to use, and select a massing tool.
If necessary, scroll to display the tool that you want to use.
2 Specify the insertion point of the mass element.
You can move or hide the Properties palette to expose more of the drawing area.
3 Specify the next point.
This point can be the second corner (for a rectangular mass element), or the radius (for a circular mass
element).
4 Specify the height, if prompted.
5 Specify the rotation of the mass element.
6 Continue adding mass elements, and press
ENTER
.
Creating a Mass Element with User-Specified Settings
Use this procedure to add a mass element with settings that you specify.
1 Open the tool palette that you want to use, and select a massing tool.
If necessary, scroll to display the tool that you want to use.
2 On the Properties palette, expand Basic, and expand General.
3 Select a style.
4 Under Bound Spaces, define if this mass element can be used as a bounding object for associative spaces.
You can select three options here:
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Yes: this mass element can be used as bounding object for associative spaces.
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No: this mass element cannot be used as bounding object for associative spaces.
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By style: this mass element will use the bounding settings from the mass element style.
578 | Chapter 14 Creating Conceptual Models