Arc

VRML PROTO (based on IndexedFaceSet) that generates part of a flat circle (e.g. for pie charts),
similar to PROTO ArcLine.

EXTERNPROTO Arc [
    exposedField  SFFloat  fromAngle
    exposedField  SFFloat  toAngle
    exposedField  SFFloat  radius
    exposedField  SFFloat  tesselation
    field         SFBool   solid
] "proto.Arc.wrl#Arc"

Property fromAngle

Start angle (in radians).

Definition:

• Field Type: exposedField
• Data Type: SFFloat
• Default Value: 0

Property toAngle

End angle (in radians).
If toAngle > fromAngle, the mesh is generated clockwise, otherwise anti-clockwise.

Definition:

• Field Type: exposedField
• Data Type: SFFloat
• Default Value: 6.28318

Property radius

Radius of the circle.

Definition:

• Field Type: exposedField
• Data Type: SFFloat
• Default Value: 1

Property tesselation

Intermediary steps on the curve.
In short, higher tesselation = rounder shape = more vertices.

Definition:

• Field Type: exposedField
• Data Type: SFFloat
• Default Value: 16

Property solid

Like IndexedFaceSet.solid, specifies if the geometry is two-sided (solid FALSE) or one-sided (solid TRUE).

Definition:

• Field Type: field
• Data Type: SFBool
• Default Value: FALSE