atc1441.github.io/Triangle.html at main · atc1441/atc1441.github.io · GitHub

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<!DOCTYPE html>
<html>
<body>
<canvas id="myCanvas" width="600" height="600" style="border:1px solid #c3c3c3;"></canvas><br>
<script>
var canvas = document.getElementById("myCanvas");
var ctx = canvas.getContext("2d");
let myarray = [];

var triangleTopX = 500;
var triangleTopY = 900;

var triangleLeftX = 100;
var triangleLeftY = 100;

var triangleRightX = 900;
var triangleRightY = 100;


var triangleNewX = 500;
var triangleNewY = 500;

var triangleOldX = triangleTopX;
var triangleOldY = triangleTopY;

function drawPixel(x,y)
{
	ctx.beginPath();
	ctx.lineTo(((canvas.width/1000)*x), ((canvas.height/1000)*(1000-y)));
	ctx.lineTo(((canvas.width/1000)*x-1), ((canvas.height/1000)*(1000-y))-1);
	ctx.strokeStyle = 'blue';
	ctx.stroke();
}

function getRandomInt(max)
{
	return Math.floor(Math.random() * max);
}

function getPoints(index)
{
	X = 0;
	Y = 0;
	if(index == 1)
	{
	X = triangleTopX;
	Y = triangleTopY;
	}
	else if(index == 2)
	{
	X = triangleLeftX;
	Y = triangleLeftY;
	}
	else
	{
	X = triangleRightX;
	Y = triangleRightY;
	}

	return {X,Y};
}

function timedInterval()
{
	used = getPoints(getRandomInt(3));
	triangleNewX = (used.X+triangleOldX)/2;
	triangleNewY = (used.Y+triangleOldY)/2;
	drawPixel(triangleNewX,triangleNewY);
	triangleOldX = triangleNewX;
	triangleOldY = triangleNewY;
}

drawPixel(triangleTopX,triangleTopY);
drawPixel(triangleLeftX,triangleLeftY);
drawPixel(triangleRightX,triangleRightY);
myVar = setInterval(timedInterval, 1);
</script>

</body>
</html>