Error 404 - Not Found
Sorry, the page that you are looking for does not exist.
VRML Script Tutorial Full list VRML Interactive Tutorial
Introduction
Hierarchical Node Structures
Defining and Instancing Nodes Defining Levels of Detail Events in VRML
|
Lighthouse3d.comMostly about 3D graphics
Error 404 - Not FoundSorry, the page that you are looking for does not exist.
|
|
A complete example is now presented. A Shape is drawn at the origin. The PositionInterpolator will move the shape up and down along the y axis. The cycle is repeated forever.
First one needs the to define a Transform with a Shape, a TimeSensor, and a PositionInterpolator.
DEF tr Transform {
We need to get the eventOut fraction_changed generated by the TimeSensor. This event outputs a value between 0 and 1. We can use this value to set a key for the PositionInterpolator by routing the fraction_changed eventOut from the TimeSensor to the set_fraction eventIn from the PositionInterpolator.
A new fraction being set in an interpolator causes the keyValue to be changed. As a consequence the interpolator will generate the fraction_changed eventOut. Because the interpolator used is a PositionInterpolator, this event outputs a 3D coordinate value.
Finally we use this eventOut to set a translation in the Transform node. Because the translation is an exposed field of the Transform node we can use the eventIn set_translation to change it. To do this we route the fraction_changed eventOut of the PositionInterpolator to the set_translation eventIn of the Transform node.
The ROUTE statements to do this are: