Circle node

Circle {
  SFFloat radius 1
  SFFloat startAngle 0
  SFFloat arcAngle 0
}

Draw a circle or an arc circle according to the related material.
Transparency is supported (Extra processing power will be used when animating radius or angles with transparency > 0).

When -2*PI < arcAngle < 2*PI, the resulting arc begins at startAngle and extends for arcAngle radians.
Angles are interpreted such that 0 radians is at the 3 o'clock position.
A positive value indicates a counter-clockwise rotation, while a negative value indicates a clockwise rotation.

SFFloat radius 1:
Circle radius in pixels.

SFFloat startAngle 0:
Start angle of the arc in radians. The above rotation transformations also apply to this value but only for multiple of PI/2.

SFFloat arcAngle 0:
Angle of the arc in radians.

#VRML V2.0 utf8

# Display a red circle
Shape {
  appearance Appearance {
    material Material2D { emissiveColor 1 0 0  filled TRUE }
  }
  geometry Circle { radius 25 }
}