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Positioning Objects


The composition of your scene depends on the position of the objects relative to other objects. In most cases, you'll need to use the Reposition tool in conjunction with the Resize and Rotation tools to create the desired relationships.

Positioning applies to objects, groups and families as well as lights and the camera. In this section the term "object" also refers to the camera and lights.

Bryce lets you position objects in four ways: using the Position tool to move objects along a specific axis; using the 3D Transformation dialog to enter specific offset positions, by dragging the object to a different location; or by using the arrow keys to nudge objects.

Using the Reposition Tool

The Reposition tool has three different states: Reposition X, Reposition Y, and Reposition Z. As you move the pointer over the tool, one of its states becomes active.


The Reposition tool has three states. As you move your cursor over the tool, a state becomes active.

To position an object along a specific axis:

1 Make sure the Edit palette is visible. If it's not, click the Edit button at the top of the Bryce window.

2 Move the cursor over the Reposition tool.

3 When the state you want to use becomes active, drag in the direction you want to move the object.

To choose a spatial option for repositioning:

1 Make sure the Edit palette is visible. If it's not, click the Edit button at the top of the Bryce window.

2 Click the triangle icon next to the Reposition tool and choose an option from the menu:

Object Space moves your selection relative to itself (see "Object Space").

World Space moves your selection in absolute world coordinates (see "World Space").

Camera Space moves your selection relative to the camera (see "Camera Space").

The three spatial options are also available for the Resize, and Rotate tools. When you select Object, World, or Camera Space for the Rotation tool, it is also set for the other two tools. The option you choose in the Edit palette does not affect the 3D Transformations dialog.

To undo position operations:

1 Make sure the Edit palette is visible. If it's not, click the Edit button at the top of the Bryce window.

2 Click the triangle icon next to the Reposition tool and choose Unreposition from the menu.

Numerical Repositioning

The most precise method of positioning objects is by using the 3D Transformations dialog. This dialog lets you enter specific offset values for a selected object.

All transformations performed using this dialog use World Space coordinates regardless of the spatial option you chose for the Reposition tool.

Offset values are expressed in Bryce units of measure (refer to "Bryce Units"). You may enter negative numbers in the Reposition fields.

To reposition an object numerically:

1 Make sure the Edit palette is visible. If it's not, click the Edit button at the top of the Bryce window.

2 Select an object.

3 Click the triangle icon next to the Reposition tool and choose 3D Transformations from the menu. The 3D Transformations dialog appears.

4 Enter a value in one or all of the Offset fields.

The value determines the number of Bryce units the object is offset from its current position.

Remember that since this dialog only performs transformations in world space, you are moving the object relative to world X, Y, and Z coordinates.

You can also position an object numerically using the Object Attributes dialog. The values in the Attributes dialog position the object using either Absolute coordinates or Object space coordinates. Refer to "Absolute Coordinates" and "Definition Coordinates" for more on these coordinate systems.

Interactive Repositioning

The simplest way of positioning objects is by dragging them to different locations in your scene.

When you drag an object, you're repositioning it with respect to the camera.

To reposition an object interactively:

Nudging Objects

Nudging lets you move objects by pressing the arrow keys and the PageUp and PageDown keys.

Nudging uses World Space coordinates to reposition objects. Each time you press a key, the object is moved in 1/4 unity size increments (5.12 Bryce units). Refer to "Bryce Units" for more on Unity.


Use the Arrow, PageUp and PageDown keys to nudge objects in World Space.

To nudge an object along the X axis:

1 Select one or more objects.

2 Press either the Right or Left arrow keys.

To nudge an object along the Y axis:

1 Select one or more objects.

2 Press either the PageUp or PageDown keys.

To nudge an object along the Z axis:

1 Select one or more objects.

2 Press either the Up or Down keys.



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