iphone - make object move from 1 point to another at a custom speed -


i made app there object moves towards moving point time - why didn't use animated function. problem made function:

cgpoint center = self.im.center; // "i" cgpoint, im imageview. if (!cgpointequaltopoint(self.im.center, i)) {     = (i.y-center.y)/(i.x-center.x);     //y = a*x+b - linear function in math     b = (center.y-(a*center.x));     if (i.y>center.y) {         self.im.center = cgpointmake(((center.y+1)-b)/a, center.y+1);     }     else     {         self.im.center = cgpointmake(((center.y-1)-b)/a, center.y-1);     } }

the problem closer functions becoming straight horizontal line faster because change x axis means if add 1 y change x bigger means move faster..

if there way glad try if know other ways tell me!

managed find different solution

cgpoint center = self.im.center;//im = image view x = center.x;//starting point y = center.y;//starting point double distance = sqrtf(powf(i.x - x, 2) + powf(i.y - y, 2));// = cgpoint (ending point) float speedx = (2 * (i.x - x)) / distance;//(the 2 speed) float speedy = (2 * (i.y - y)) / distance;//(the 2 speed) self.im.center = cgpointmake(center.x+speedx, center.y+speedy);//im = image view

Comments

Post a Comment

Popular posts from this blog

curl - PHP fsockopen help required -

i trying work on cloudflare api , have found in documentation. unfortunately have no idea how can use in fsockopen or through curl. here example of post request. need know how can make request below data post using curl or fsockopen curl https://www.cloudflare.com/api_json.html -d 'a=cache_lvl' \ -d 'tkn=8afbe6dea02407989af4dd4c97bb6e25' \ -d 'email=sample@example.com' \ -d 'z=example.com' \ -d 'v=agg' here link cloudflare https://www.cloudflare.com/docs/client-api.html#s4.2 try one: $ch = curl_init("https://www.cloudflare.com/api_json.html"); curl_setopt($ch, curlopt_returntransfer,1); curl_setopt($ch, curlopt_followlocation, 1); curl_setopt($ch, curlopt_ssl_verifypeer,false); // handling of -d curl parameter here. $param = array( 'a' => 'cache_lvl', 'tkn' => '8afbe6dea02407989af4dd4c97bb6e25', 'email' => 'sample@example.com', 'z' =...
Read more

HTTP/1.0 407 Proxy Authentication Required PHP -

i working in restricted network/limited access internet. since have use proxy make web service call. here php code calling web service , response . $client = new soapclient("http: //www.xyz.com/abc/wsdls/login.wsdl", array("trace" => 1, "exceptions" => 1, 'proxy_host' => $proxy_host, 'proxy_port' => $proxy_port, 'proxy_login' => $proxy_login, 'proxy_password' => $proxy_password)); response is fatal error: uncaught soapfault exception: [wsdl] soap-error: parsing wsdl: couldn't load ' http://www.xyz.com/abc/wsdls/login.wsdl ' : failed load external entity if copy url error message , paste in browser(with same proxy settings) works. 2nd scenario is, if pass values instead of variables giving me diffarant response $client = new soapclient("http: //www.xyz.com/abc/wsdls/login.wsdl", array("trace" => 1, "exceptions" => 1, 'proxy_host' ...
Read more

c# - Resource not found error -

i have problem accessing method on homecontroller. show code of method : [httpget] public actionresult decriptidentifiantetredirige(string login_crypter, string mdp_crypter) { string loginacrypter = _globalmanager.protegemotdepasse(login_crypter); string mdpacrypter = _globalmanager.protegemotdepasse(mdp_crypter); user userapp = new models.user(login_crypter, mdp_crypter); if (userapp.authentificationvalidee(userapp.userlogin, userapp.password)) { session["name"] = userapp.userlogin; return redirecttoaction("accueil", "home"); } else { return redirecttoaction("validerauthentification", "home"); } } then in routeconfig.cs wrote route : routes.maproute( name: "authentificationapresdecryptage", url: "{controller}/{action}/{login_crypter}/{mdp_crypter}", defaults: new...
Read more