Viewing Program

Program Data

Program thumbnail for "{props.program.title}"

Title	Real Physics Snowglobe!
ID	6553233039556608
Created	10 years ago, 1418151556598
Updated	10 years ago, 1418316023205
Code	var FRAME_RATE = 30; var grav = new PVector(0, 9.81/FRAME_RATE); var GlobeFric = new PVector(0.8, 0.8); var FlakeAirFric = 0.07; var GlobeAirFric = 0.02; var GlobeColor = color(115, 175, 230); var GlobeEdgeColor = lerpColor(GlobeColor, color(128), 0.5); var FlakeColor = color(255, 255, 255, 200); var hopper = getImage("creatures/Hopper-Jumping"); translate(width/2, height/2); frameRate(FRAME_RATE); textAlign(CENTER, CENTER); imageMode(CENTER); var Snowflake = function(x, y, radius, globe){ this.globe = globe;//Assign globe property to this instance of a snowflake this.pos = new PVector(x, y);//Instantiate a PVector for the position this.vel = new PVector(0, 0);//Instantiate a PVector for the velocity this.r = radius;//Assign radius (r) to this instance of a snowflake this.ang = 0; this.fric = FlakeAirFric+random(0.1, 0.05); this.theta = random(-360, 360);//for swaying this.magn = random(0.4);//for swaying this.spin = random()>0.5 ? -1 : 1;//for swaying this.type = ['\u2744', '\u2745', '\u2746'][floor(random(2.999))]; }; Snowflake.prototype.update = function(){ this.pos.add(this.vel);//move this.vel.add(grav);//apply gravity this.vel.mult(1-this.fric);//apply air friction this.ang = frameCountthis.spin+this.theta;//rotate the snowflake this.vel.x += cos(this.ang)this.magn;//whirl the snowflake x this.vel.y += sin(this.ang)this.magn;//whirl the snowflake y //if the snowflake is outside of the globe if (dist(this.pos.x, this.pos.y, this.globe.pos.x, this.globe.pos.y) > this.globe.r - this.r){ this.pos.sub(this.globe.pos); this.pos.normalize(1);//constrain it to the globe this.pos.mult(this.globe.r - this.r); this.pos.add(this.globe.pos); this.vel.mult(GlobeFric);//apply friction from the edge of the globe } }; Snowflake.prototype.draw = function(){ pushMatrix(); translate(this.pos.x, this.pos.y);//translate by the position rotate(this.ang);//rotate by the angle fill(FlakeColor);//snowflake color text(this.type, 0, 0);//draw the snowflake popMatrix(); }; var Snowglobe = function(x, y, radius){ this.pos = new PVector(x, y);//Instantiate a PVector for the position this.vel = new PVector(0, 0);//Instantiate a PVector for the velocity this.r = radius;//Assign radius (r) property to this instance of a snowglobe this.flakes = [];//Assign array to hold snowflake objects this.flakeRad = floor(width/40)+2;//Assign snowflake radius this.initLim = radius/sqrt(2);//set the snowflake initialization boundaries (rectangular) }; Snowglobe.prototype.addFlakes = function(numFlakes){ for (var f = 0; f < numFlakes; f++){//repeat for each flake wanted this.flakes.push(new Snowflake(random(-this.initLim, this.initLim) + this.pos.x,//x random(-this.initLim, this.initLim) + this.pos.y,//y this.flakeRad,//radius this));//globe } }; Snowglobe.prototype.draw = function(){ //draw self fill(180, 140, 0); stroke(128, 100, 0); rect(this.pos.x-this.r/2, this.pos.y+this.r0.8, this.r, this.r/2); noStroke();//no outlines fill(GlobeColor);//snowglobe color ellipse(this.pos.x, this.pos.y, this.r2, this.r2);//draw circle (diameter = 2 x radius) fill(255); ellipse(this.pos.x, this.pos.y+this.r0.75, this.r1.3, this.r0.4);//ground image(hopper, this.pos.x, this.pos.y, this.r, this.r);//hopper //draw flakes textSize(this.flakeRad3); for (var i in this.flakes){//loop through the flakes this.flakes[i].draw();//draw a single flake } //draw edge noFill(); strokeWeight(this.r/10); stroke(GlobeEdgeColor); ellipse(this.pos.x, this.pos.y, this.r2, this.r2);//draw circle (diameter = 2 x radius) }; Snowglobe.prototype.update = function(){ //update the snowflakes for (var i in this.flakes){ this.flakes[i].update(); } }; var myGlobe = new Snowglobe(0, 0, width/4); myGlobe.addFlakes(20+width/40); var draw = function() { background(128); myGlobe.update(); myGlobe.draw(); fill(255, 0, 0); if (mouseIsPressed){ myGlobe.pos.x += (mouseX-pmouseX); myGlobe.pos.y += (mouseY-pmouseY); } fill(64); text('Shake the snow globe!', 0, -height*0.45); };
Folds	62,70,72,79,107,112
Fork	false
Key	ag5zfmtoYW4tYWNhZGVteXIXCxIKU2NyYXRjaHBhZBiAgNC7l4TSCww
Votes	314
Spin-Offs	22
Type	PJS
Width	400
Height	400
User Flagged	false
Origin Scratchpad	{"id":"5858268865101824","title":"Contest: Animate this snow globe!","deleted":"false","official":"false"}
Hidden From Hotlist	false
Restricted Posting	false
By Child	false
Author Nick	◄▓▒░Swax97░▒▓►
Author Name	swax97
Author ID	kaid_923591327600038001835478
Author Profile Access	COACH

Archive Data

Added	6 months ago, 1739459150886
Updated	4 months ago, 1744844794806
Source Deleted	unknown