processing - Moving an objects while others stay static in a click controlled sketch -


so i'm trying build animation can step through mouse clicks. adding individual objects click click easy. sequence want follows: 1 object(a) drawn initially. first mouse click adds object(b). second mouse click adds object(c). third mouse click, object(c) should move across screen , disappear.

i'm having problem on last part of sequence. can't figure out how make object move , still maintain static part of sketch. normal way of doing movement change coordinates of object each loop through draw() function, , use background cover previous objects. can't in case because need object(a) , object(b) persistent.

code below. help!

var count = 0;  function setup() {     createcanvas(200, 200);     = new object1(20, 40);     b = new object1(20, 85);     c = new object1(20, 130);  }  function draw() {     background(200);     a.display();     if (count == 1) {         b.display();     }     if (count == 2) {         b.display();         c.display();     }     if (count == 3) { //this have problem      }     if (count > 3) {         count = 0;     }  }  function object1(ix, iy, itext) {     this.x = ix;     this.y = iy;     this.text = itext;      this.display = function() {         fill(160);         rect(this.x, this.y, 40, 40);     } }  function mousepressed() {     count++; }

generally how you'd drawing static part of scene off-screen buffer, can create using creategraphics() function. the reference:

var pg; function setup() {   createcanvas(100, 100);   pg = creategraphics(100, 100); } function draw() {   background(200);   pg.background(100);   pg.nostroke();   pg.ellipse(pg.width/2, pg.height/2, 50, 50);   image(pg, 50, 50);   image(pg, 0, 0, 50, 50); }

graphics drawing

you'd draw static part buffer, draw buffer screen, draw dynamic stuff on top of each frame.

this has been discussed before, i'd recommend doing search stuff "processing pgraphics" , "p5.js buffer" find bunch more information.


Comments

Post a Comment

Popular posts from this blog

What is happening when Matlab is starting a "parallel pool"? -

running parallel cpu processes in matlab starts command parpool() according documentation , function: [creates] special job on pool of workers, , [connects] matlab client parallel pool. this function takes bit of time execute, on order of 30 seconds. in other multi-cpu paradigms openmp, parallel execution seems totally transparent -- i've never noticed behavior analogous matlab (granted i'm not experienced parallel programming). so, happening between time parpool() called , when finishes executing? takes long? parallel computing toolbox enables run matlab code in parallel using several different paradigms (e.g. jobs , tasks, parfor , spmd , parfeval , batch processing), , run either locally (parallelised across cores in local machine) or remotely (parallelised across machines in cluster - either 1 own, or 1 in cloud). in of these cases, code run on matlab workers , copies of matlab without interactive desktop. if you're intending run on remo...
Read more

php - Cannot override Laravel Spark authentication with own implementation -

during login process of laravel spark need request token of remote api. api stores exact same users , passwords laravel spark application. therefore need username , non hashed password of user during authentication process. i thought overriding authenticated method solution problem. in routes/web.php override post /login endpoint , pointing endpoint own logincontroller: <?php namespace app\http\controllers\auth; use illuminate\support\facades\log; use illuminate\http\request; use laravel\spark\http\controllers\auth\logincontroller sparklogincontroller; class logincontroller extends sparklogincontroller { /** * create new login controller instance. * * @return void */ public function __construct() { parent::__construct(); } /** * handle successful authentication attempt. * * @param request $request * @param \illuminate\contracts\auth\authenticatable $user * @return response */ public fu...
Read more

angular - DownloadURL return null in below code -

when change file updated in firebase storage when try downloadurl show null. filechange(event: any) { const imagefolder: string = this.employee.id; const filelist: filelist = event.target.files; const file: file = filelist[0]; const storageref = firebase.storage().ref().child(`${imagefolder}/profile.jpg`).put(file); console.log(storageref.snapshot.downloadurl); } the put() asynchronous. if want url after file uploaded have this: firebase.storage().ref().child(`${imagefolder}/profile.jpg`).put(file).then((snapshot) => { storageref = snapshot.downloadurl: console.log(snapshot.downloadurl); });
Read more