applet - Java Scanline Polygon Fill Algorithm -


i have started learning computer graphics , new java. java applet performs scan line algorithm works cases. can me out know wrong ?

you can view entire code here = http://codeshare.io/9uvuf in advance.

i've made similar in c++ , opengl. work concave , convex, not sure if polygons.

i don't know if it's best solution, works me.

bool graphicobject::ismouseinside(int x, int y) {     if (points.size() < 2)     {         return false;     }      int count = 0;     float ti;     float yint = y;     float xint = 0;      (size_t = 0; < points.size() - 1; i++)     {         auto p1 = points[i + 1];         auto p2 = points[i];          if (p1.x == x && p1.y == y)         {             return true;         }          ti = 0;          if ((p2.y - p1.y) != 0)         {             ti = (yint - p1.y) / (p2.y - p1.y);         }          if (ti > 0 && ti < 1)         {             xint = p1.x + (p2.x - p1.x) * ti;              // hack: point (line) impossible select.             // add error margin.             if (points.size() == 2)             {                 // todo: use euclidean distance this. better?                 if ((xint + 8) > x || (xint - 8) > x)                 {                     count++;                 }             }             else             {                 if (xint > x)                 {                     count++;                 }             }         }     }      // last point first.     auto p1 = points[points.size() - 1];     auto p2 = points[0];      ti = (yint - p1.y) / (p2.y - p1.y);      if (ti > 0 && ti < 1)     {         xint = p1.x + (p2.x - p1.x) * ti;          if (xint > x)         {             count++;         }     }      return count % 2 != 0; }

Comments

Post a Comment

Popular posts from this blog

android - Get AccessToken using signpost OAuth without opening a browser (Two legged Oauth) -

i using signpost oauth access data magento server. have read various tutorials on same , reach point open browser user can enter credentials. however, per requirement have automate part. hence, user should not browser page. have set-up done on server side ( magento ), hit url , returned call page. same through program in android. i have tried below, consumer = new commonshttpoauthconsumer(key, secret); provider = new commonshttpoauthprovider(oauth_init_url,access_token_url, authorize_url); try { provider.retrieverequesttoken(consumer, oauth.out_of_band); log.d("tokens" , consumer.gettoken() + " -- " + consumer.gettokensecret()); } and request tokens. dont know how bypass next step. tried directly accessing accesstoken (stupid of me) provider.retrieveaccesstoken(consumer, "mycallback://callback"); no luck, ends in oauth.signpost.exception.oauthnotauthorizedexception: authorization failed (server replied 401). ...
Read more

org.mockito.exceptions.misusing.InvalidUseOfMatchersException: mockito -

getting error org.mockito.exceptions.misusing.invaliduseofmatchersexception: invalid use of argument matchers! 1 matchers expected, 2 recorded. exception may occur if matchers combined raw values: //incorrect: somemethod(anyobject(), "raw string"); when using matchers, arguments have provided matchers. example: //correct: somemethod(anyobject(), eq("string matcher")); at when( getprogramservice .callservice(any(getprogramtype.class))) .thenreturn(jaxbresponse); please explain error , possible resolution the code posted looks fine; don't see problem it. code before or above causing exception. key here: invalid use of argument matchers! 1 matchers expected, 2 recorded. any , used above, doesn't return "special kind of null" or "special kind of getprogramtype"; don't exist. instead, returns null , side effect puts matcher on stack. whe...
Read more

google shop client API returns 400 bad request error while adding an item -

i'm working on solution add items in google shopping market java application. following tutorial real mess because of missing classes of laste release, after setting 1.5-beta maven managed make base example typecheck correctly classes. still can make simple task of adding 1 item. instead of posting whole code i'm posting part creates product feed. private product createproduct(string id) { product product = new product(); product.title = "red wool sweater"; product.content = new content( "text", "comfortable , soft, sweater keep warm on " + "cold winter nights. red , blue stripes."); product.appcontrol = new appcontrol(); product.appcontrol.addrequireddestination("productads"); product.externalid = id; product.lang = "it"; product.country = "it"; product.condition = "nuovo"; product.price = new price("eu...
Read more