Random Replicate

New in Bryce 6 is the Random Replicate command. This function is similar to Multi-Replicate in that it replicates one or more objects. The difference is that each replication is random in placement and in the number each object is replicated. Each time you repeat a replication, the number of each object replicated changes.

• Quantity - Enter how many objects to create during the replication
• Boundary - Enter the boundary, in BUs for where the replicated objects can be created around the original objects
• Land Objects - Select to have objects Snap to Land
• Constrain Rotation to Y-axis - Select to constrain rotation to the Y-axis
  
  Please note that if you are replicating Bryce Trees or Terrains, the Land Objects and Constrain Rotation to Y-axis functions are automatically selected. If you deselect Constrain Rotation to Y-axis when trees or terrains are selected, Bryce will still constrain the objects to the Y-axis.

To use Random Replicate:

1. Create one or more objects
2. Select all the objects you want to replicate.
3. Choose Edit > Random Replicate from the menu or press Opt/Alt+R.
4. Enter the number of replications in the Quantity field
5. Enter the Boundary amount on the X, Y, and Z-axis (defaults to 200).

• If you want the objects to be no more than 50 BU away from the originals, enter 100 (50 BU both positive and negative).
• If you want the objects to be no more than 200 BU away from the originals, enter 400 (200 BU both positive and negative).

6. To have the objects snap to land, select Land Objects.
7. To only allow the objects to be rotated on the Y-axis (good for trees, houses, etc.), select Constrain Rotation to Y-axis.
8. Click on the OK icon to accept the changes and complete the operation.

Examples:

Basic Random Replication

The following example replicates three objects (cube, sphere, and torus) 15 times with a boundary of 100 on all axes:

And here is the result:

• Sphere - Replicated four times
• Torus - Replicated five times
• Cube - Replicated six times

If the objects are all selected and grouped, the size of the group (Boundary) will be around 100 BUs (give or take a few BUs).

After deleting the replicated objects and repeating the same Random Replication, a different combination of objects is created, for example:

• Sphere - Replicated seven times
• Torus - Replicated four times
• Cube - Replicated four times

Land Objects

The following image shows the result of the random replication with the Land Objects selected. Since the default plane is the "land," the objects all snap to it. The same thing will happen if the default plane has been deleted (underground plane is considered the "land").

The following image shows the result of the random replication with the Land Objects selected and a terrain in the scene. Only the primitives were replicated, not the terrain.

This is especially useful for placing objects like trees and rocks around a terrain. The objects will snap to the terrain for a more natural look:

(Okay, so primitives on a terrain aren't "natural" but you get the idea.)

Constrain Rotation to Y-axis

The image below shows the result of the random replication with the Constrain Rotation to Y-axis selected. Notice that the objects are only rotated around the Y-axis - useful for placing trees, houses, people, etc.

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