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

Title	Pendulum Puppet
ID	5820531777601536
Created	10 years ago, 1428762346944
Updated	10 years ago, 1429031903252
Code	/ Thank you for the votes! I didn't expect it to be in the hot list! / angleMode = "radians"; var seeMessage = false; // <-- try changing this var Pendulum = function(origin, armLength, angle) { this.origin = origin; this.armLength = armLength; this.position = new PVector(); this.angle = angle; this.aVelocity = 0.0; this.aAcceleration = 0.0; this.damping = 0.985; this.ballRadius = 25.0; this.dragging = false; }; Pendulum.prototype.go = function() { this.update(); this.display(); }; Pendulum.prototype.update = function() { // As long as we aren't dragging the pendulum, let it swing! if (!this.dragging) { // Arbitrary constant var gravity = 0.4; // Calculate acceleration this.aAcceleration = (-1 * gravity / this.armLength) * sin(this.angle); // Increment velocity this.aVelocity += this.aAcceleration; // Arbitrary damping this.aVelocity = this.damping; // Increment angle this.angle += this.aVelocity; } }; Pendulum.prototype.display = function() { if(this.origin instanceof PVector){ this.currentOrigin = this.origin; } else { this.currentOrigin = this.origin.position; } this.position = new PVector( this.armLength sin(this.angle), this.armLength * cos(this.angle)); this.position.add(this.currentOrigin); stroke(0, 0, 0); strokeWeight(3); line(this.currentOrigin.x, this.currentOrigin.y, this.position.x, this.position.y); fill(224, 194, 134); if (this.dragging) { fill(143, 110, 44); } ellipse(this.position.x, this.position.y, this.ballRadius, this.ballRadius); }; Pendulum.prototype.handleClick = function(mx, my) { var d = dist(mx, my, this.position.x, this.position.y); if (d < this.ballRadius) { cursor(HAND); this.dragging = true; } }; Pendulum.prototype.stopDragging = function() { this.aVelocity = 0; this.dragging = false; }; Pendulum.prototype.handleDrag = function(mx, my) { if (this.dragging) { var diff = PVector.sub(this.currentOrigin, new PVector(mx, my)); this.angle = atan2(-1*diff.y, diff.x) - radians(90); } }; var limbLength = 75; var leftArm1 = new Pendulum(new PVector(width/2-50, 110), limbLength, 0); var leftArm2 = new Pendulum(leftArm1, limbLength, 0); var rightArm1 = new Pendulum(new PVector(width/2+50, 110), limbLength, 0); var rightArm2 = new Pendulum(rightArm1, limbLength, 0); var leftLeg1 = new Pendulum(new PVector(width/2+40, 230), limbLength, 0); var leftLeg2 = new Pendulum(leftLeg1, limbLength, 0); var rightLeg1 = new Pendulum(new PVector(width/2-40, 230), limbLength, 0); var rightLeg2 = new Pendulum(rightLeg1, limbLength, 0); var limbs = [leftLeg1, leftLeg2, rightLeg1, rightLeg2, leftArm1, leftArm2, rightArm1, rightArm2]; draw = function() { background(255); // Draw the body strokeWeight(3); line(width/2-50, 110, width/2+50, 110); line(width/2, 110, width/2, 230); line(width/2-40, 230, width/2+40, 230); fill(232, 192, 111); rect(width/2-25, 39, 50, 64, 100); for(var i = 0; i < limbs.length; i++){ limbs[i].go(); } }; mousePressed = function() { for(var i = 0; i < limbs.length; i++){ limbs[i].handleClick(mouseX, mouseY); } }; mouseDragged = function() { for(var i = 0; i < limbs.length; i++){ limbs[i].handleDrag(mouseX, mouseY); } }; mouseReleased = function() { cursor(); for(var i = 0; i < limbs.length; i++){ limbs[i].stopDragging(); } }; if(seeMessage === true){ println("If you want, see my other programs!"); }
Folds
Fork	false
Key	ag5zfmtoYW4tYWNhZGVteXIXCxIKU2NyYXRjaHBhZBiAgIjI4rerCgw
Votes	256
Spin-Offs	28
Type	PJS
Width	400
Height	400
User Flagged	false
Origin Scratchpad	{"id":"5440447211110400","title":"Challenge: Pendulum puppet","deleted":"true","official":"false"}
Hidden From Hotlist	false
Restricted Posting	false
By Child	false
Author Nick	cCarlosOtavio94
Author Name	cCarlosOtavio94
Author ID	kaid_684152336052552057866366
Author Profile Access	COACH

Archive Data

Added	10 months ago, 1739449547357
Updated	10 months ago, 1739449558426
Source Deleted	unknown