#VRML V2.0 utf8
#
#
#[return]
#
#ex-normalinterpolator.wrl
# example of NormalInterpolator
## the interpolator interpolates the value of normals associated
## to the vertices of a IndexedFaceSet (actually 1 surface)
# Camera
Viewpoint {
position 1 6 1
orientation 1 0 0 -1.5
fieldOfView 0.785398
}
# define the geometry
Transform {
translation -1 0 -1
children [
Shape {
geometry IndexedFaceSet {
ccw TRUE # normal following the direction
# of the right hand rule (see coordIndex
# order under); so pointing to the viewer
solid FALSE # when FALSE polygon sides are always
# displayed regardless of the viewing direction
coordIndex [ 0,1,2, -1 ] # defining a face
coord Coordinate {
point [ 0 0 0, 2.5 0 3.5, 0 0 2, 2 3 2 ]
}
# defining and associating colors to vertices
colorIndex [ 0,1,2,-1]
colorPerVertex TRUE # signalizes we use one color per face
color Color { color [ 1 0 0 , 1 1 0 , 0 1 0]
}
# defining and associating normals to vertices
normalIndex [ 0,1,2,-1]
normalPerVertex TRUE
normal DEF NORM Normal {
vector [ 0 1 0, 0 -1 0, 0 1 0 ]
}
}
}
]
}
# Timer
DEF TIMER TimeSensor {
loop TRUE
cycleInterval 4
}
# Interpolation of Normals
DEF INTERP NormalInterpolator {
key [ 0, 0.25, 0.5, 0.75, 1.]
keyValue [ 0 1 0, 0 1 0, 0 1 0,
0 -1 0, 0 1 0, 0 1 0,
0 -1 0, 0 -1 0, 0 1 0
0 -1 0, 0 -1 0, 0 -1 0
0 -1 0, 0 -1 0, 0 -1, 0 ]
}
#run interpolator : INTERP
ROUTE TIMER.fraction_changed TO INTERP.set_fraction
#associate interpolator and geometry :
ROUTE INTERP.value_changed TO NORM.set_vector
#