Variance surfaces feature
are a way to create non-planar/uniform surfaces that may be used in CSG
functions. A moderate degree of tessellation and displacement using a
vertex fractal method are used to create non-planar surfaces with
'variation'. Creating a Variance Surface
Object Choose Variance Surfaces
option when creating an object, supported for Rectangle,
Cylinder, Cone ShapesVariance Surface Settings With a displacement
map object selected as Object A, open Object Effects dialog with Window:
Object Effects menu option and choose "Var. Surfaces" tab.Partition Degree: Relative
tessellation degree of objects surfaces* Vertex
Displacement: Relative amount vertices are displaced**Actual
amounts are determined & scaled based on the object's dimensions Use
Render: Wireframe view to observe partition
Frequency/Persistence controls profile of fractal applied to objects'
vertices, graph is shown as a visual depiction.Displacement
Region Mask: Controls relative degree of vertex displacement for a
region of an object. Defaults to covering entire object region.
White areas represent full degree of displacement, black areas are where no
vertex displacement is applied. Mask acts as a cylindrical style texture
around object. As shown, left is no mask region (white), right is
using region mask gradient to apply vertex displacement mainly on lower
regions of cylinder shape.
Variance Surfaces Variance surface objects can be used to create
'rough cut' shapes. For example a pillar shape that appears
broken Cylinder Shape with variance surface Rectangle shape used in CSG
difference, result on right.
Visual 3D Modeler User's
Guide Rev 1.6