javascript - How to animate a ball becoming smaller in HTML5 canvas -


i'm trying make ball become increasingly smaller using html5 canvas. i've been able make grow larger, figured reverse simple. doing wrong here? console.log shows me values 11 0 decreasing 1. when x less 0, stops. ball doesn't change shape, , suspect because it's drawing smaller shapes on top of each other, perhaps? thought clearrect work that?

function draw2() {     console.log(x);     context2d.clearrect(0, 0, canvas.width, canvas.height);     context2d.arc(10, 10, x, 0, math.pi * 2, true);     context2d.fill();     x -= 1;     if (x < 0) {         clearinterval(s);        } }

a demo available at: http://www.chronicled.org/dev/test.html

thanks!

add context2d.beginpath(); beginning of draw2 (it wouldn't hurt have in draw)

the .fill filling whole path includes old arcs


Comments

Post a Comment

Popular posts from this blog

apache - Add omitted ? to URLs -

i working on website cms reads page name of query string, e.g. http://exmaple.com/?pagename . trying create rewrite rule rewrite ? . so, user types in /pagename , taken /?pagename try this: rewriteengine on rewritecond %{request_filename} !-d rewritecond %{request_filename} !-f rewriterule ^/?(.*) index.php?$1 [l]
Read more

redirect - bbPress Forum - rewrite to wwww.mysite prohibits login -

i using bbpress installation without wordpress integration. the redirect of rewriteengine @ forum site works: rewriteengine on rewritecond %{http_host} ^forum.mysite.com$ rewriterule (.*)$ http://www.forum.mysite.com/$1 [r=301,l] the problem login pppress. bbpress login not recognize: http://www.forum.mysite/bb-login.php . it redirects to: http://forum.mysite.com/bb-login.php . i tried permalink settings none , name based, same issue. does uses redirect in bbpress or how can eliminate "double" content , redirect permanently www.? i redirected www.forum.mysite.com forum.mysite.com , achieved eliminate "double" content.
Read more

php - How can I stop spam on my custom forum/blog? -

so have custom built forum & blog system of late has been dealing lot of spam. if wordpress use akismet, if different common platform i'm sure i'd find plugin. there kind of static class can download this? using php. i'd still go akismet, if it. uses outside of wordpress, may have pay fee it, depending on use -- check terms , conditions -- it's option , easy implement in php using api. use api key wordpress. com account access. basically, grab whichever php client library takes fancy -- use alex potsides' php5 library -- plug in key, , it's handful of lines of code. here's bare bones of validation straight 1 of live sites: ... if ($akismet) { $akismet->setcommentauthor($name); $akismet->setcommentauthoremail($session->userinfo["email"]); $akismet->setcommentauthorurl(""); $akismet->setcommentcontent($sentence);...
Read more