Voronoi Attributes

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Revision as of 19:13, 29 April 2012

Contents

Point cloud

Distribution

Option menu providing 4 alternate methods of point distribution in a voronoi point cloud.

Each distribution type may have it's own attribute(s) that are unique. The only common attribute found among each distribution is Seed.

uniform

Places particles by choosing uniformly-distributed random numbers along each coordinate axis.

Num points

The number of points (particles) to generate around the object. Each point will give rise to a voronoi cell. There may be fewer fragments than cells, depending on how they intersect the object.

type: integer

default: 100

Seed

The random number sequence seed value. Change this to get a different arrangement of points.

type: integer

default: 0

poisson

Places particles such that the approximate distance between them is the same. Gives rise to more evenly shaped cells.

Approx num

The number of points to aim for. This will not be achieved exactly, since the aim of this distribution mode is equally spaced points.

type: integer

default: 100

radial

The radial option creates a radial distribution of voronoi cells from a center point. This option uses the the same Num point and seed attributes as the uniform option. The dispersion of cells around the center point is determined by the Radial bias attribute.

Radial bias

type float
default 1.0
minimum 0.5
How much influence the center point has when distorting particle positions.


The generated cells, as seen above, is merely a preview of the fragments that will be generated upon a collision. The actual center point is determined by the point of the collision.

cluster

Tries to create clusters of points, to give more variation in cell size.

Num clusters

type int
default 10
minimum 2
The number of clusters to place amongst the original particle set. Particles are moved towards the nearest cluster.

Cluster bias

How much influence the cluster has on the final particle position.

type: float

default: 1.0

Options

Regenerate during sim

type: boolean

default: True

description: Enable this to re-generate the point cloud when different objects are broken during a simulation

Radial center at impact

type: boolean

default: True

Particles

type: string

description: The particle shape in which the generated points are stored

Data name

type: string

default: cell

description: The name of the custom data to be attached to fragments, identifying (integer) the particle whose voronoi cell they originate from

Voxel

Accuracy (%)

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