skokenes

function createRoundedRectPath(x, y, width, height, radius) {
  return (
    // Move to position, offset by radius in x direction
    "M" +(x + radius) + "," + y 
    // Draw a horizontal line to the top right curve start
    + "h" + (width - 2 * radius) 
    // Draw the top right corner curve
    + "a" + radius + "," + radius + " 0 0 1 " + radius + "," + radius
    // Draw a vertical line to the bottom right corner
    + "v" + (height - 2 * radius) 

dzhang123

HTML5 Canvas Zoom and Pan Image

Pure JavaScript Zoom and Pan, taken from http://phrogz.net/tmp/canvas_zoom_to_cursor.html

A Pen by TechSlides on CodePen.

License.