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tr-pieces.html
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tr-pieces.html
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<html>
<head>
<script>
//https://stackoverflow.com/questions/1484506/random-color-generator
function getRandomColor() {
var letters = '0123456789ABCDEF';
var color = '#';
for (var i = 0; i < 6; i++) {
color += letters[Math.floor(Math.random() * 16)];
}
return color;
}
function trContext(ctx, ns, ppm){
this.blk = [];
for(var i = 0; i < ns; ++i){
this.blk[i] = getRandomColor();
}
this.ppm = ppm;
this.ns = ns;
this.fifoDepth = 6;
this.ptr = 3;
this.reptr = 0;
this.shiftPtr = 0;
this.mi = 0;
this.cg = 0;
this.cgv = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0];
this.ctx = ctx;
}
trContext.prototype.shift = function(){
this.mi = this.mi + this.ppm * this.ns;
this.shiftPtr += Math.floor(this.mi);
this.mi -= Math.floor(this.mi);
this.cg = 0;
if(this.shiftPtr > this.ns){
this.shiftPtr -= this.ns;
this.ptr += 1;
}else if(this.shiftPtr < 0){
this.shiftPtr += this.ns;
if(this.ptr > 0){
this.ptr -= 1;
}else{
this.cg = 1;
}
}
for(i = 1; i < this.cgv.length; ++i){
this.cgv[i] = this.cgv[i-1];
}
this.cgv[0] = this.cg;
}
trContext.prototype.drawFIFO = function(){
this.ctx.save();
this.ctx.translate(95, 45);
this.ctx.scale(78, 218 /(this.fifoDepth));
for(var i = 0; i < this.fifoDepth; ++i){
if(i <= this.ptr){
this.ctx.fillStyle = "#ffa000";
}else{
this.ctx.fillStyle = "#d0d0d0";
}
this.ctx.fillRect(0, (this.fifoDepth-i-0.9), 1, 0.8);
}
this.ctx.restore();
}
trContext.prototype.drawBarrelShifter = function(){
this.ctx.save();
this.ctx.translate(211, 45);
this.ctx.scale(50, 218 /(2*this.ns));
this.ctx.fillStyle = "#ffa000";
for(var i = 0; i < this.ns; ++i){
this.ctx.fillRect(0.0, (this.shiftPtr + i), 1, 0.8);
}
this.ctx.fillStyle = "#d0d0d0";
for(var i = 0; i < this.shiftPtr; ++i){
this.ctx.fillRect(0, i, 1, 0.8);
}
for(var i = this.shiftPtr; i < this.ns; ++i){
this.ctx.fillRect(0, (this.ns + i), 1, 0.8);
}
this.ctx.restore();
}
trContext.prototype.drawCG = function(){
var centerX = 275;
var centerY = 50;
var radius = 10;
if(this.cg){
this.ctx.fillStyle = "#ff0000";
}else{
this.ctx.fillStyle = "#00c000";
}
this.ctx.beginPath();
this.ctx.arc(centerX, centerY, radius, 0, 2 * Math.PI, false);
this.ctx.fill();
centerX = 470;
centerY = 30;
if(this.cgv[this.cgv.length-1]){
this.ctx.fillStyle = "#ff0000";
}else{
this.ctx.fillStyle = "#00c000";
}
this.ctx.beginPath();
this.ctx.arc(centerX, centerY, radius, 0, 2 * Math.PI, false);
this.ctx.fill();
}
trContext.prototype.drawInterp = function(c1, c2, w){
this.ctx.save();
this.ctx.translate(315, 30);
this.ctx.scale((439-315), (270-90));
function f(x){
return 0.2 + 0.6 * (0.5*(1+Math.cos(Math.PI*x)));
}
this.ctx.lineWidth = w;
this.ctx.beginPath();
this.ctx.strokeStyle = c1;
this.ctx.moveTo(0, f(0.25));
for(var x = 0.02; x < 1; x += 0.02){
this.ctx.lineTo(x, f(x+0.25));
}
this.ctx.stroke();
this.ctx.beginPath();
this.ctx.lineWidth = w;
this.ctx.strokeStyle = c2;
this.ctx.moveTo(0, f(this.mi*0.5));
for(var x = 0.02; x < 1; x += 0.02){
this.ctx.lineTo(x, f(x+this.mi*0.5));
}
this.ctx.stroke();
this.ctx.restore();
}
function redraw(){
var prev_ptr = window.tr.ptr;
var prev_shiftPtr = window.tr.shiftPtr;
this.tr.drawInterp("white", "white", 0.02);
window.tr.shift();
window.tr.drawCG();
if(this.ptr != prev_ptr){
window.tr.drawFIFO();
}
if(this.shiftPtr != prev_shiftPtr){
window.tr.drawBarrelShifter();
}
this.tr.drawInterp("#0000ff", "#ff0000", 0.01);
window.setTimeout(redraw, 100)
}
window.addEventListener('load', function () {
var obj = document.getElementById("myCanvas");
window.tr = new trContext(obj.getContext("2d"), 8, -0.01);
window.tr.drawBlocks();
window.tr.drawBarrelShifter();
window.tr.drawFIFO();
window.setTimeout(redraw, 50);
})
</script>
<script>
// Addapted from code generated by http://canvimation.github.io/
trContext.prototype.drawBlocks = function()
{
var ctx = this.ctx;
//forward;
ctx.shadowColor ="rgba(0,0,0,0)";
ctx.strokeStyle ="rgba(0,0,0,1)";
ctx.lineWidth = 1;
ctx.lineCap = "butt";
ctx.lineJoin = "miter";
ctx.beginPath();
ctx.moveTo(49,16);
ctx.lineTo(486,16);
ctx.lineTo(486,293);
ctx.lineTo(49,293);
ctx.lineTo(49,16);
ctx.closePath();
ctx.stroke();
ctx.shadowOffsetX = 15;
ctx.shadowOffsetY = 15;
ctx.shadowBlur = 0;
ctx.shadowColor = "rgba(0,0,0,0)";
ctx.fillStyle = "rgba(255,255,255,1)";
ctx.fill();
//Buffer;
ctx.shadowColor ="rgba(0,0,0,0)";
ctx.strokeStyle ="rgba(0,0,0,1)";
ctx.lineWidth = 1;
ctx.lineCap = "butt";
ctx.lineJoin = "miter";
ctx.beginPath();
ctx.moveTo(72,30);
ctx.lineTo(290,30);
ctx.lineTo(290,271);
ctx.lineTo(72,271);
ctx.lineTo(72,30);
ctx.closePath();
ctx.stroke();
ctx.shadowOffsetX = 15;
ctx.shadowOffsetY = 15;
ctx.shadowBlur = 0;
ctx.shadowColor = "rgba(0,0,0,0)";
ctx.fillStyle = "rgba(255,255,255,1)";
ctx.fill();
//interp;
ctx.shadowColor ="rgba(0,0,0,0)";
ctx.strokeStyle ="rgba(0,0,0,1)";
ctx.lineWidth = 1;
ctx.lineCap = "butt";
ctx.lineJoin = "miter";
ctx.beginPath();
ctx.moveTo(315,30);
ctx.lineTo(439,30);
ctx.lineTo(439,270);
ctx.lineTo(315,270);
ctx.lineTo(315,30);
ctx.closePath();
ctx.stroke();
ctx.shadowOffsetX = 15;
ctx.shadowOffsetY = 15;
ctx.shadowBlur = 0;
ctx.shadowColor = "rgba(0,0,0,0)";
ctx.fillStyle = "rgba(255,255,255,1)";
ctx.fill();
//NCO;
ctx.shadowColor ="rgba(0,0,0,0)";
ctx.strokeStyle ="rgba(0,0,0,1)";
ctx.lineWidth = 1;
ctx.lineCap = "butt";
ctx.lineJoin = "miter";
ctx.beginPath();
ctx.moveTo(136,322);
ctx.lineTo(361,322);
ctx.lineTo(361,414);
ctx.lineTo(136,414);
ctx.lineTo(136,322);
ctx.closePath();
ctx.stroke();
ctx.shadowOffsetX = 15;
ctx.shadowOffsetY = 15;
ctx.shadowBlur = 0;
ctx.shadowColor = "rgba(0,0,0,0)";
ctx.fillStyle = "rgba(255,255,255,1)";
ctx.fill();
//FIFO;
ctx.shadowColor ="rgba(0,0,0,0)";
ctx.strokeStyle ="rgba(0,0,0,1)";
ctx.lineWidth = 1;
ctx.lineCap = "butt";
ctx.lineJoin = "miter";
ctx.beginPath();
ctx.moveTo(95,45);
ctx.lineTo(173,45);
ctx.lineTo(173,263);
ctx.lineTo(95,263);
ctx.lineTo(95,45);
ctx.closePath();
ctx.stroke();
ctx.shadowOffsetX = 15;
ctx.shadowOffsetY = 15;
ctx.shadowBlur = 0;
ctx.shadowColor = "rgba(0,0,0,0)";
ctx.fillStyle = "rgba(255,255,255,1)";
ctx.fill();
//barrelShift;
ctx.shadowColor ="rgba(0,0,0,0)";
ctx.strokeStyle ="rgba(0,0,0,1)";
ctx.lineWidth = 1;
ctx.lineCap = "butt";
ctx.lineJoin = "miter";
ctx.beginPath();
ctx.moveTo(211,45);
ctx.lineTo(261,45);
ctx.lineTo(261,263);
ctx.lineTo(211,263);
ctx.lineTo(211,45);
ctx.closePath();
ctx.stroke();
ctx.shadowOffsetX = 15;
ctx.shadowOffsetY = 15;
ctx.shadowBlur = 0;
ctx.shadowColor = "rgba(0,0,0,0)";
ctx.fillStyle = "rgba(255,255,255,1)";
ctx.fill();
}
</script>
</head>
<body>
<canvas id="myCanvas" width="500" height="320">
</canvas>
</body>
</html>