chung's blogspot

click here =>  https://sandcastle.cesium.com/index.html# myCesiumflight 

myCesiumflight chung is a small Cesium engine based 3D webgl flight simulator written in html5, css and javascript . Fly anywhere in the world with photorealistic high resolution terrain imagery and elevation heightmaps . Uses cssscale to increase fps rate. (12 fps fullscreen on my notebook) . Fetchs openstreetmap infos to display airports on radar and generate airports radio messages .Also osm bridges and buildings save / reload on startup . Works on chrome & firefox , not edge .
may work no more due to Cesium changes

heres an example of how to draw dooted broken lines (lignes pointillé) in html5 javascript canvas

  var contextx=0,contexty=0,contextpattern=0;
function context_moveTo(x,y){
  context.moveTo(x,y);
  contextx=x;contexty=y;
}
function context_lineTo(x,y){
  if(contextpattern==0){context.lineTo(x,y);}
  else if(contextpattern==2){
     var dr=20,dx=(x-contextx),dy=(y-contexty),dn=Math.sqrt(dx*dx+dy*dy)/dr;
     for(var i=0;i<dn;i++){context.moveTo(contextx+i*dx/dn,contexty+i*dy/dn);
           context.lineTo(contextx+i*dx/dn+dx*11/(dr*dn),contexty+i*dy/dn+dy*11/(dr*dn));}
     }
  else{
     var dr=10,dx=(x-contextx),dy=(y-contexty),dn=Math.sqrt(dx*dx+dy*dy)/dr;
     for(var i=0;i<dn;i++){context.moveTo(contextx+i*dx/dn,contexty+i*dy/dn);
           context.lineTo(contextx+i*dx/dn+dx*6/(dr*dn),contexty+i*dy/dn+dy*6/(dr*dn));}
     }
contextx=x;contexty=y;
}

how to easily interact communication between html parent window and child iframe window ?
use html5 localStorage if both parent and child window are in the same folder.
you can find a javascript example in my osm car sim json_osm_webcarsimheight_shadow and mystreetview

=>  http://chungswebsite.blogspot.fr/search/label/json_osm_chung     (free open source) 

read chung is a small txt reader with 70 multilingual tts text to speech voices from responsivevoice and yandextranslate and animated 3D face avatar written in html5 , javascript and uses jsc3D .
open source, no adds popups.

play it here =>  https://chungkn1400.github.io/read_chung/read_chung/read_chung_helene.html

                 =>  https://chungkn1400.github.io/read_chung/read_chung/read_chung_anne.html

                 =>  https://chungkn1400.github.io/read_chung/read_chung/read_chung_sigourney.html 

you can download it there =>  https://sourceforge.net/projects/read-chung/   (source)

find txt ebooks here => https://www.google.fr/search?q=download+txt+ebook

(15/02/2016) txt ansi format support added (default is utf-8)

look at my new chatbot 3D talking avatars faces i created with latest updated face3D_chung
(anne,carol,clementine,elise,evie,helene,nathalie,sasha,sigourney,sophie,valerie)

=>  https://chungkn1400.github.io/chatbot_chung_small/chatbot_chung_web/chatbot_large_iframe.html

(25/12/2015) talk3D_chung simple example of using obj models created with face3D_chung added

=>  http://chungswebsite.blogspot.fr/2014/06/face3dchung-free-3d-obj-model-with.html