Draw a line from x,y with a given angle and length

Draw a line from x,y with a given angle and length. DEMO Fiddle

function drawLine(x1,y1,r,theta){
    ctx.clearRect(0, 0, c.width, c.height);    
    ctx.beginPath();
    ctx.moveTo(x1, y1);
    ctx.lineTo(x1 + r * Math.cos(Math.PI * theta / 180.0), y1 + r * Math.sin(Math.PI * theta / 180.0));   
    ctx.closePath();
    ctx.stroke();
  }
Advertisements

Published by

shiyam

My passion became my profession , I'm a driven, energetic and proactive tech professionally. I consider myself an engagement professional, as I don't simply provide solutions, I create them. I am a continuous learner – always looking for new technologies, in my spare time I search Google for the latest trends . I like to think of myself as a futurist and I'm a Full Stack JavaScript Developer. >> Skills << ✔ Web App Development ✔ Strong Javascript ✔ Backbone.js, Angular.js, Dojo.js ✔ jQuery.js ✔ Node.js ✔ MongoDb , MySql ✔ Socket.io / Web Sockets (Native) ✔ PHP ✔ Ruby (Watir - Automation) ✔ Grunt ✔ Github , Bitbucket , SVN ✔ Agile Process ✔ Scrum ✔ Ability to research and adapt new techs ✔ Fast Learner ✔ Always Punctual ✔ Critical Thinker ✔ Friendly Personality

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s