2009

To add a Vector Field space warp:
Adding a Vector Field space warp object works the same as adding a Box
geometry primitive.
1 On the Object Type rollout, click Vector Field.
2 Drag in a viewport to set the initial dimensions.
■ If using the Cube creation method, this sets all three dimensions
simultaneously.
■ If using the Box creation method, release the mouse button, and then
move the mouse vertically to set the height.
3 Click to create the space warp.
To use a Vector Field space warp with delegates:
This procedure presents general guidelines for using the Vector Field space
warp with delegates in a crowd simulation.
1 Create an object to serve as an obstacle. This object must be an editable
mesh or geometric primitive; it can have modifiers.
2 Add a Vector Field space warp.
3 Position and scale the space warp lattice so that it encloses the obstacle
object.
The lattice should be significantly larger than the object. The object
should be located roughly at the lattice center.
4 In the Lattice Parameters rollout, increase the Length Segs/Width
Segs/Height Segs settings so that the lattice segments intersect the object
at reasonable intervals.
To determine appropriate Segs settings for your obstacle objects, first
examine the object complexity. If the obstacle has a lot of detail, and
you want that detail reflected in the vector field, then you need a relatively
high lattice resolution.
5 Click the Obstacle Parameters rollout > Compute Vectors group > Vector
Field Object button (initially labeled “None”), and then in a viewport,
click the object that will act as an obstacle in the crowd simulation.
This specifies the obstacle object. The range volume grid appears on the
object's surface as an olive-colored wireframe.
Obstacle Avoidance | 4783