plane

  
  Transform {
  translation 0 0 15 
      children [
  DEF PLANEBG Transform {
      ##translation -7 5 -35
      translation -25 5 -35
      scale        4 4  3
  
      children [
          Transform {
              rotation 1 0 0 1.57
              children [
                  Shape {
                      appearance Appearance {
                          material Material {
                              diffuseColor  0.2 0.2 0.5
                              emissiveColor 0 0 0.4
                              transparency 0.6
                          }
                      }
                      geometry DEF ELEVATION ElevationGrid {
                          normalPerVertex TRUE
                          solid           TRUE
                          creaseAngle     1
                          xDimension 8  
                          zDimension 6  
                          xSpacing 1  
                          zSpacing 1  
                          height [  
                              0 0 0 0 0 0 0 0
                              0 0 0 0 0 0 0 0
                              0 0 0 0 0 0 0 0
                              0 0 0 0 0 0 0 0
                              0 0 0 0 0 0 0 0
                              0 0 0 0 0 0 0 0
                          ]
                      }
                  }
              ]
          }
      ]
  }
  
  DEF TIMER TimeSensor {
      enabled       TRUE
      cycleInterval 12
      loop          TRUE
  }
  
  DEF SCRIPT Script {
      directOutput    TRUE
      eventIn SFFloat trigger
      field   SFNode  elevation USE ELEVATION
      field   MFFloat height []
      url "javascript:
          function initialize() {
          }
          function trigger(v,t) {
              a = v*14*3.14;
              d = v*2*3.14;
              i = 0;
              j = 0;
              sind = Math.sin(d);
              for(i=0;i<8;i++) {
                  b = v*12*3.14;
                  c = v*16*3.14;
                  sina = Math.sin(a);
                  for(j=0;j<6;j++) {
                      height[i+j*8] = sina+
                                      Math.cos(b);
                      cc = height[i+j*8];
                      cc = cc + 2;
                      cc = cc / 4;
  //                    elevation.color.color[i+j*8][2] = cc;
                      b+=0.8*Math.sin(c);
                      c+=0.7;
                  }
                  a+=sind*0.8;
              }
              elevation.set_height = height;
          }
      "
  }
  
  ROUTE TIMER.fraction_changed TO SCRIPT.trigger
  
  ] }