EJS version 5.0
- Abstract=
http://www.phy.ntnu.edu.tw/ntnujava/ hwang@phy.ntnu.edu.tw - CaptureTools=
true - DataTools=
false - LanguageTools=
true - AppletColSupport=
false - UseMacMenuBar=
false - RunInBrowserFirst=
false - UseInterpreter=
true - Author=
Fu-Kwun Hwang - Dept. of Physics,National Taiwan normal Univ. - ManifestLines=
Permissions: sandbox Codebase: * Caller-Allowable-Codebase: * 初始值
t=0; for(int i=0;i<n;i++){ d=(xmax-xmin)/(n-1); x[i]=xmin+i*d; y[i]=0;vy[i]=0; if(i==id){ xi=x[i]; yi=y[i]; } x1[i]=x2[i]=x[i]; y1[i]=y0;vy1[i]=0; y2[i]=-y0;vy2[i]=0; } 關係式
if(_isPlaying())t=t+dt; for(int i=0;i<n;i++){ if(x[i]-xmin>v*t){ y[i]=0; vy[i]=0; }else{ c=k*(x[i]-xmin)-w*t; y[i]=-h*Math.sin(c); vy[i]=h*w*Math.cos(c); } if(xmax-x[i]>v*t){ y1[i]=y0; vy1[i]=0; }else{ c=-k*(xmax-x[i])+w*t; y1[i]=y0-h*Math.sin(c); vy1[i]=-h*w*Math.cos(c); } y2[i]=y[i]+y1[i]-2*y0; vy2[i]=vy1[i]+vy[i]; } yi=y[id]; dvalue
double dv; public double dvalue (double v) { if(v>0)dv=0.5; else if(v<0)dv=-0.5; else dv=0; return (int)(v*100+dv)/100.; } EJSVIEW: Click link to view it's contentControl variables:(testing)
double,double,double,inttitle = "Frame" layout = border visible = true location = "66,67" size = "820,440" position = center autoscaleX = false autoscaleY = false minimumX = xmin maximumX = xmax minimumY = ymin maximumY = ymax square = true numberOfElements = n x = x y = y sizeX = size sizeY = size fillColor = LIGHTGRAY numberOfElements = n x = x y = y sizeX = 0 sizeY = vy scaley = vscale visible = showv lineColor = RED fillColor = RED x = xi y = yi sizeX = size*1.5 sizeY = size*1.5 lineColor = BLUE fillColor = 0,0,255,128 x = xt y = yt sizeX = size*1.5 sizeY = size*1.5 visible = _isPaused() && dt2!=0 fillColor = YELLOW x = xt y = yt sizeX = 0 sizeY = vyt scalex = vscale visible = _isPaused() && dt2!=0 &&showv lineColor = RED fillColor = RED numberOfElements = n x = x1 y = y1 sizeX = size sizeY = size fillColor = LIGHTGRAY numberOfElements = n x = x1 y = y1 sizeX = 0 sizeY = vy1 scaley = vscale visible = showv lineColor = RED fillColor = RED numberOfElements = n x = x2 y = y2 sizeX = size sizeY = size fillColor = GRAY numberOfElements = n x = x2 y = y2 sizeX = 0 sizeY = vy2 scaley = vscale visible = showv lineColor = RED fillColor = RED numberOfElements = 3 x = xmin-size y = ty pixelSize = true text = %ys% font = Monospaced,PLAIN,20 elementposition = EAST position = south layout = border position = east layout = HBOX borderType = LOWERED_ETCHED variable = _isPaused imageOn = /org/opensourcephysics/resources/controls/images/play.gif actionOn = _play() imageOff = /org/opensourcephysics/resources/controls/images/pause.gif actionOff = _pause() text = "step" action = t=t+dt; _step(); image = /org/opensourcephysics/resources/controls/images/reset.gif action = _reset() position = center layout = HBOX variable = T minimum = 5.0 maximum = 20.0 format = "T=0.00" dragaction = w=2*pi/T; k=w/v; action = _initialize() variable = v minimum = xmax/20 maximum = xmax/2 format = "v=0.0" dragaction = k=w/v; action = _initialize() variable = dt2 minimum = -T/4 maximum = T/4 format = "dt2=0.00" enabled = _isPaused() dragaction = xt=x[id]; t2=t+dt2; if(xt-xmin>v*t2){ yt=0;vyt=0; }else{ c=k*(xt-xmin)-w*t2; yt=-h*Math.sin(c); vyt=h*w*Math.cos(c); } variable = showv text = "Vy" position = north variable = id minimum = 0 maximum = n format = "id=0" dragaction = yi=y[id]; xi=x[id];
