gr.setlinewidth is broken in Javascript #194
Description
I've been playing around a bit with the Javascript package and this function appears to be broken. Setting different line widths doesn't appear to change the linewidth. I was planning on using this for a visualization and running an experiment, so if anyone could help that'd be great. Here's a sample script. Just compile the webassembly and try to run this html file (it's just the example in the docs but I set a different line width).
<!doctype html>
<html lang="en-us">
<head>
<meta charset="utf-8">
<title>gr.js example</title>
</head>
<body>
<canvas id="example-canvas" width="500" height="500"></canvas>
<script type="text/javascript" src="gr.js"></script>
<script type="text/javascript">
// Set up x and y values
var x = new Array(201);
var y = new Array(201);
for (var i = 0; i < 201; i++) {
x[i] = 2 * i / 200;
}
y[0] = 0;
for (var i = 1; i < 201; i++) {
y[i] = 0.9*y[i-1] + 0.4 * Math.random() - 0.2;
}
GR.ready(function() {
var gr = new GR('example-canvas');
function onFrame() {
// Update x and y values
for (var i = 0; i < 200; i++) {
y[i] = y[i+1];
x[i] = x[i+1];
}
y[200] = 0.9*y[200] + 0.4* Math.random() - 0.2;
x[200] = x[199] + 0.01;
// Draw new frame
gr.clearws();
gr.setviewport(0.1, 0.95, 0.1, 0.95);
gr.setwindow(x[0], x[200], -1, 1);
gr.grid(0.25, 0.25, 0, 0, 2, 2);
gr.axes(0.25, 0.25, x[0], -1, 2, 2, 0.005);
gr.axes(0.25, 0.25, x[200], 1, -2, -2, -0.005);
gr.setlinewidth(20); // Does nothing???
gr.polyline(200, x, y);
gr.textext(0.37, 0.97, "Plot Animation Demo");
gr.textext(0.5, 0.01, "x");
gr.textext(0.01, 0.525, "y");
// Request to be called for the next frame
window.requestAnimationFrame(onFrame);
};
window.requestAnimationFrame(onFrame);
});
</script>
</body>
</html>