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ManualsBrandsAutodesk ManualsApplications3ds Max

1031

Terrain 1021

Terrain

Using contours to build a terrain

Creates terrain objects (page 1–347) from contour

line data. You select editable splines representing

elevationcontoursand3dsMaxcreatesamesh

surface over the contours. You can also create a

"terraced" representation of the terr ain object so

that each level of contour data is a step, resembling

traditional study models of land forms.

When you import an AutoCAD drawing file to use

as contour data, 3ds Max names each object based

on the AutoCAD object’s layer, color, or object

type. 3ds Max appends a number after each name.

For example, an AutoCAD object on the layer

BASE becomes BASE.01.

After importing the contour data, selecting the

objects and clicking the Terrain button, 3ds Max

moves a ll the selected objects out of the scene

and into the terr ain object. Other splines in

theselectionaretreatedinthesamewayasby

theMovecopymethod. Youcanonlyusethese

splinesasoperandsoftheterrainobject.Thisis

appropriate if you create splines in order to create

a terrain object and have no further use for them.

Test

The basic function of a test in Particle Flow is to

determine whether particles satisfy one or more

conditions, and if so, make them available for

sending to another event. When a particle passes

a test, it is said to “test True.” To send eligible

particles to another event, you must wire (page

3–1033) thetesttothatevent.Particlesthatdon’t

pass the test (“test False”) remain in the event

and are repeatedly subjected to its operators and

tests. Or, if the test isn’t wired to another event, al l

particlesremainintheevent.

AlistofalltestsinParticleFlowisavailableinthe

Tests topic (page 2–210).