first piece of html5 display

addressing of 7 segments (RGB) and windows (greyscale)
master
georges 2013-08-11 21:26:50 +02:00
parent 36e97d42e7
commit 5d181539b7
2 changed files with 108 additions and 0 deletions

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<html><head>
<title>Syn2lights simulator</title>
</head>
<body>
<canvas id="myCanvas" width="1437" height="1051"></canvas>
<script>
var canvas = document.getElementById('myCanvas');
var context = canvas.getContext('2d');
var imageObj = new Image();
imageObj.src = 'building-isometric_b.jpg';
// windowTab[0][0]={x:488,y:265};
// windowTab[1][0]={x:528,y:265};
function lightWindow(x,y,val) {
context.beginPath();
context.rect(488+40.3*x, 265+87.4*y, 23, 34);
context.fillStyle = 'rgb('+val+','+val+','+val+')';
context.fill();
}
function lightSegment(display,segment,r,g,b) {
context.beginPath();
segx=488+40.3*display;
segy=176
switch(segment) {
case 0: //segment 0
context.moveTo(segx,segy);
context.lineTo(segx+23,segy);
break;
case 1:
context.moveTo(segx+23,segy);
context.lineTo(segx+23,segy+17);
break;
case 2:
context.moveTo(segx+23,segy+18);
context.lineTo(segx+23,segy+34);
break;
case 3:
context.moveTo(segx,segy+34);
context.lineTo(segx+23,segy+34);
break;
case 4:
context.moveTo(segx,segy+18);
context.lineTo(segx,segy+34);
break;
case 5:
context.moveTo(segx,segy);
context.lineTo(segx,segy+17);
break;
case 6:
context.moveTo(segx,segy+17);
context.lineTo(segx+23,segy+17);
break;
case 7:
context.moveTo(segx+23,segy+38);
context.lineTo(segx+23,segy+42);
break;
}
context.lineWidth=5;
context.strokeStyle = 'rgb('+r+','+g+','+b+')';
context.stroke();
}
imageObj.onload = function() {
context.drawImage(imageObj, 0, 0);
for(x=0;x<12;x++)
for(y=-1;y<8;y++)
lightWindow(x,y,0);
i=0;
j=0;
oldi=oldj=0;
colwave=0;
d=0;
s=0;
oldd=olds=0;
setInterval("loop()",100);
};
function loop() {
// 7 segments colorful sequence
lightSegment(oldd,olds,0,0,0);
lightSegment(d,s,255,Math.floor((Math.sin(colwave/30)+1)*127),Math.floor((Math.cos(colwave/17)+1)*127));
colwave++;
oldd=d;olds=s;
s++;
if(s>=8) {
s=0
d++
if(d>=12) {
d=0
}
}
// windows sliding light
lightWindow(oldi,oldj,0) // switch off previous window
lightWindow(i,j,Math.floor((Math.sin(colwave/77)+1)*127)) // switch on new window
oldi=i;
oldj=j;
i++;
if(i>=12) {
i=0;
j++;
if(j>=8) {
i=j=0
}
}
}
</script>
</body></html>