PositionInterpolatorEx Node - Interpolator Nodes in Cortona - VRML Extensions - Cortona3D Viewer - Products - Developer Zone


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PositionInterpolatorEx Node

The PositionInterpolatorEx node interpolates among a list of 3D vectors using a specified interpolation method. This node extends the standard PositionInterpolator VRML node.

EXTERNPROTO PositionInterpolatorEx [ 
  eventIn         SFFloat   set_fraction               # (-inf,inf)
  exposedField    MFFloat   key             []         # (-inf,inf)
  exposedField    MFVec3f   keyValue        []         # (-inf,inf)
  exposedField    MFFloat   params          [0, 0, 0]  # (-inf,inf)  
  exposedField    SFString  type            "LINEAR"  
  eventOut        SFVec3f   value_changed
]
[
  "urn:inet:parallelgraphics.com:cortona:PositionInterpolatorEx"
  "http://www.parallelgraphics.com/vrml/proto/Cortona/extensions.wrl
  #PositionInterpolatorEx"
]

The type field defines the interpolation method. The possible values of this field are "CONSTANT", "LINEAR", "COSINE", "CUBIC" and "HERMITE". In the case of the Hermite interpolation, the params field specifies three interpolation parameters: Tension, Continuity and Bias.

Definitions of the other fields and events of the ColorInterpolatorEx node are similar to the corresponding definitions for the PositionInterpolator VRML node.