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Title	Verlet Cloth
ID	4525289326018560
Created	7 years ago, 1525276346437
Updated	7 years ago, 1525373318473
Code	//VERLET CLOTH /** CHECK OUT MY SUBPAGE TO STAY UP TO DATE ON ALL MY PROJECTS @MY_SUB_PAGE: https://www.khanacademy.org/computer-programming/subscribe-to-tazal/5630446202585088 */ // >>>>>> CONTROLS <<<<<< // - Click to cut cloth smooth(); var gridS = 45;//grid size var points = [],//array for storing points sticks = [],//array for storing sticks bounce = 0.1,//velocity return when point hits wall gravity = 0.6,//amount added to y pos friction = 0.95;//velocity lost //distance function for two vectors var distance=function(p0, p1){return dist(p0.x,p0.y,p1.x,p1.y);}; //loop through x &y and affs var s=(width-(502))/gridS; for(var y=0;y<gridS/1.7;y++){ for(var x=0;x<gridS;x++){ //adds pinned points across the top if(y===0&&(x%1===0\|\|x===gridS-1)){ //adds point points.push({ x: 50+sx,//add point x y: 30+sy, //add point y oldx: 50+sx,//add old point x oldy: 30+sy, //add old point y pinned: true,//sets pinned to true }); }else{ //adds point points.push({ x: 50+sx,//add point x y: 30+sy, //add point y oldx: 50+sx,//add old point x oldy: 30+sy, //add old point }); } } } //loops through and adds sticks ( X axis ) for(var i=1;i<points.length;i++) { if(i%gridS!==0){ sticks.push({//add a new stick p0: points[i-1],//adds first point p1: points[i],//adds second point //sets the sticks length lengt: distance(points[i-1], points[i]) }); } } //loops through and adds sticks ( Y axis ) for(var i=0;i<points.length;i++) { if(i<points.length-gridS){ sticks.push({//add a new stick p0: points[i],//adds first point p1: points[i+gridS],//adds second point //sets the sticks length lengt: distance(points[i], points[i+gridS]) }); } } var updatePoints=function() { //loop through points for(var i = 0; i < points.length; i++) { var p = points[i]; if(!p.pinned){//if point is NOT pinned //finds point velocity var vx = (p.x - p.oldx) * friction, vy = (p.y - p.oldy) * friction; //sets point old x and y p.oldx = p.x; p.oldy = p.y; //apply velocity p.x += vx; p.y += vy; //apply gravity p.y += gravity; if(p.x > width) { p.x = width; p.oldx = p.x + vx * bounce; }else if(p.x < 0) { p.x = 0; p.oldx = p.x + vx * bounce; } if(p.y > height) { p.y = height; p.oldy = p.y + vy * bounce; }else if(p.y < 0) { p.y = 0; p.oldy = p.y + vy * bounce; } } } }; var updateSticks=function() { //loop through sticks for(var i = 0; i < sticks.length; i++) { var s = sticks[i], //finds dist between the two points df = dist(s.p0.x,s.p0.y,s.p1.x,s.p1.y), //finds percent diffence between dist and length percent = (s.lengt - df) / df / 2, //calaculate adjusments offsetX = (s.p1.x - s.p0.x) * percent, offsetY = (s.p1.y - s.p0.y) * percent; if(!s.p0.pinned) {//apply adjusments if it is not pinned s.p0.x -= offsetX; s.p0.y -= offsetY; } if(!s.p1.pinned) {//apply adjusments if it is not pinned s.p1.x += offsetX; s.p1.y += offsetY; } //cuts stick if mouseispressed if(mouseIsPressed&& ( dist( (s.p0.x+s.p1.x)/2, (s.p0.y+s.p1.y)/2,mouseX,mouseY)<=s.lengt) ){ sticks.splice(i,1); } } }; strokeWeight(1);//set to 2 for a MASSIVE drop in fps draw= function() { background(255, 255, 255); updatePoints();//update points pos updateSticks();//update sticks pos for(var i = 0; i < sticks.length; i++) { var s = sticks[i]; line(s.p0.x, s.p0.y,s.p1.x, s.p1.y); } };
Folds
Fork	false
Key	ag5zfmtoYW4tYWNhZGVteXIXCxIKU2NyYXRjaHBhZBiAgKK2oPeECAw
Votes	184
Spin-Offs	20
Type	PJS
Width	600
Height	600
User Flagged	false
Origin Scratchpad	null
Hidden From Hotlist	false
Restricted Posting	false
By Child	false
Author Nick	Tazal
Author Name	Tazal
Author ID	kaid_1111326808064353592342431
Author Profile Access	PUBLIC

Archive Data

Added	10 months ago, 1739362994514
Updated	10 months ago, 1739363003459
Source Deleted	unknown