liabru-matter-js/build/matter-0.7.0.min.js

/**
* matter-0.7.0.min.js 0.7.0-alpha 2014-04-01
* http://brm.io/matter-js/
* License: MIT
*/

!function(){var a={},b={};!function(){var a=0,c=1;b.create=function(a){var c={id:b.nextId(),type:"body",angle:0,position:{x:0,y:0},force:{x:0,y:0},torque:0,positionImpulse:{x:0,y:0},constraintImpulse:{x:0,y:0,angle:0},speed:0,angularSpeed:0,velocity:{x:0,y:0},angularVelocity:0,isStatic:!1,isSleeping:!1,motion:0,sleepThreshold:60,density:.001,restitution:0,friction:.1,frictionAir:.01,groupId:0,slop:.05,render:{visible:!0,sprite:{xScale:1,yScale:1},path:"L 0 0 L 40 0 L 40 40 L 0 40",lineWidth:1.5}},d=n.extend(c,a);return b.updateProperties(d),d},b.nextId=function(){return a++},b.nextGroupId=function(){return c++},b.updateProperties=function(a){a.vertices=a.vertices||y.fromPath(a.render.path),a.axes=a.axes||v.fromVertices(a.vertices),a.area=y.area(a.vertices),a.bounds=w.create(a.vertices),a.mass=a.mass||a.density*a.area,a.inverseMass=1/a.mass,a.inertia=a.inertia||y.inertia(a.vertices,a.mass),a.inverseInertia=1/a.inertia,a.positionPrev=a.positionPrev||{x:a.position.x,y:a.position.y},a.anglePrev=a.anglePrev||a.angle,a.render.fillStyle=a.render.fillStyle||(a.isStatic?"#eeeeee":n.choose(["#556270","#4ECDC4","#C7F464","#FF6B6B","#C44D58"])),a.render.strokeStyle=a.render.strokeStyle||n.shadeColor(a.render.fillStyle,-20),y.create(a.vertices,a);var b=y.centre(a.vertices);y.translate(a.vertices,a.position),y.translate(a.vertices,b,-1),y.rotate(a.vertices,a.angle,a.position),v.rotate(a.axes,a.angle),w.update(a.bounds,a.vertices,a.velocity),a.isStatic&&(a.restitution=0,a.friction=1,a.mass=a.inertia=a.density=1/0,a.inverseMass=a.inverseInertia=0,a.render.lineWidth=1),s.set(a,a.isSleeping)},b.resetForcesAll=function(a){for(var b=0;b<a.length;b++){var c=a[b];c.force.x=0,c.force.y=0,c.torque=0}},b.applyGravityAll=function(a,b){for(var c=0;c<a.length;c++){var d=a[c];d.isStatic||d.isSleeping||(d.force.y+=d.mass*b.y*.001,d.force.x+=d.mass*b.x*.001)}},b.updateAll=function(a,c,d,e){for(var f=0;f<a.length;f++){var g=a[f];g.isStatic||g.isSleeping||g.bounds.max.x<e.min.x||g.bounds.min.x>e.max.x||g.bounds.max.y<e.min.y||g.bounds.min.y>e.max.y||b.update(g,c,d)}},b.update=function(a,b,c){var d=b*b,e=1-a.frictionAir,f=a.position.x-a.positionPrev.x,g=a.position.y-a.positionPrev.y;a.velocity.x=f*e*c+a.force.x/a.mass*d,a.velocity.y=g*e*c+a.force.y/a.mass*d,a.positionPrev.x=a.position.x,a.positionPrev.y=a.position.y,a.position.x+=a.velocity.x,a.position.y+=a.velocity.y,a.angularVelocity=(a.angle-a.anglePrev)*e*c+a.torque/a.inertia*d,a.anglePrev=a.angle,a.angle+=a.angularVelocity,a.speed=x.magnitude(a.velocity),a.angularSpeed=Math.abs(a.angularVelocity),y.translate(a.vertices,a.velocity),0!==a.angularVelocity&&(y.rotate(a.vertices,a.angularVelocity,a.position),v.rotate(a.axes,a.angularVelocity)),w.update(a.bounds,a.vertices,a.velocity)},b.applyForce=function(a,b,c){a.force.x+=c.x,a.force.y+=c.y;var d={x:b.x-a.position.x,y:b.y-a.position.y};a.torque+=(d.x*c.y-d.y*c.x)*a.inverseInertia},b.translate=function(a,b){a.positionPrev.x+=b.x,a.positionPrev.y+=b.y,a.position.x+=b.x,a.position.y+=b.y,y.translate(a.vertices,b),w.update(a.bounds,a.vertices,a.velocity)},b.rotate=function(a,b){a.anglePrev+=b,a.angle+=b,y.rotate(a.vertices,b,a.position),v.rotate(a.axes,b),w.update(a.bounds,a.vertices,a.velocity)}}();var c={};!function(){var a=0;c.create=function(a){return n.extend({id:c.nextId(),type:"composite",parent:null,isModified:!1,bodies:[],constraints:[],composites:[]},a)},c.nextId=function(){return a++},c.setModified=function(a,b,d,e){if(a.isModified=b,d&&a.parent&&c.setModified(a.parent,b,d,e),e)for(var f=0;f<a.composites.length;f++){var g=a.composites[f];c.setModified(g,b,d,e)}},c.add=function(a,b){for(var d=[].concat(b),e=0;e<d.length;e++){var f=d[e];switch(f.type){case"body":c.addBody(a,f);break;case"constraint":c.addConstraint(a,f);break;case"composite":c.addComposite(a,f);break;case"mouseConstraint":c.addConstraint(a,f.constraint)}}return a},c.remove=function(a,b,d){for(var e=[].concat(b),f=0;f<e.length;f++){var g=e[f];switch(g.type){case"body":c.removeBody(a,g,d);break;case"constraint":c.removeConstraint(a,g,d);break;case"composite":c.removeComposite(a,g,d);break;case"mouseConstraint":c.removeConstraint(a,g.constraint)}}return a},c.addComposite=function(a,b){return a.composites.push(b),b.parent=a,c.setModified(a,!0,!0,!1),a},c.removeComposite=function(a,b,d){var e=a.composites.indexOf(b);if(-1!==e&&(c.removeCompositeAt(a,e),c.setModified(a,!0,!0,!1)),d)for(var f=0;f<a.composites.length;f++)c.removeComposite(a.composites[f],b,!0);return a},c.removeCompositeAt=function(a,b){return a.composites.splice(b,1),c.setModified(a,!0,!0,!1),a},c.addBody=function(a,b){return a.bodies.push(b),c.setModified(a,!0,!0,!1),a},c.removeBody=function(a,b,d){var e=a.bodies.indexOf(b);if(-1!==e&&(c.removeBodyAt(a,e),c.setModified(a,!0,!0,!1)),d)for(var f=0;f<a.composites.length;f++)c.removeBody(a.composites[f],b,!0);return a},c.removeBodyAt=function(a,b){return a.bodies.splice(b,1),c.setModified(a,!0,!0,!1),a},c.addConstraint=function(a,b){return a.constraints.push(b),c.setModified(a,!0,!0,!1),a},c.removeConstraint=function(a,b,d){var e=a.constraints.indexOf(b);if(-1!==e&&c.removeConstraintAt(a,e),d)for(var f=0;f<a.composites.length;f++)c.removeConstraint(a.composites[f],b,!0);return a},c.removeConstraintAt=function(a,b){return a.constraints.splice(b,1),c.setModified(a,!0,!0,!1),a},c.clear=function(a,b,d){if(d)for(var e=0;e<a.composites.length;e++)c.clear(a.composites[e],b,!0);return b?a.bodies=a.bodies.filter(function(a){return a.isStatic}):a.bodies.length=0,a.constraints.length=0,a.composites.length=0,c.setModified(a,!0,!0,!1),a},c.allBodies=function(a){for(var b=[].concat(a.bodies),d=0;d<a.composites.length;d++)b=b.concat(c.allBodies(a.composites[d]));return b},c.allConstraints=function(a){for(var b=[].concat(a.constraints),d=0;d<a.composites.length;d++)b=b.concat(c.allConstraints(a.composites[d]));return b},c.allComposites=function(a){for(var b=[].concat(a.composites),d=0;d<a.composites.length;d++)b=b.concat(c.allComposites(a.composites[d]));return b}}();var d={};!function(){d.create=function(a){var b=c.create(),d={gravity:{x:0,y:1},bounds:{min:{x:0,y:0},max:{x:800,y:600}}};return n.extend(b,d,a)}}();var e={};!function(){e.create=function(a){return{id:e.id(a),vertex:a,normalImpulse:0,tangentImpulse:0}},e.id=function(a){return a.body.id+"_"+a.index}}();var f={};!function(){f.collisions=function(a,b){for(var c=[],d=b.metrics,e=b.pairs.table,f=0;f<a.length;f++){var g=a[f][0],i=a[f][1];if(!(g.groupId&&i.groupId&&g.groupId===i.groupId||(g.isStatic||g.isSleeping)&&(i.isStatic||i.isSleeping)||(d.midphaseTests+=1,!w.overlaps(g.bounds,i.bounds)))){var j,l=h.id(g,i),m=e[l];j=m&&m.isActive?m.collision:null;var n=k.collides(g,i,j);d.narrowphaseTests+=1,n.reused&&(d.narrowReuseCount+=1),n.collided&&(c.push(n),d.narrowDetections+=1)}}return c},f.bruteForce=function(a,b){for(var c=[],d=b.metrics,e=b.pairs.table,f=0;f<a.length;f++)for(var g=f+1;g<a.length;g++){var i=a[f],j=a[g];if(!(i.groupId&&j.groupId&&i.groupId===j.groupId||(i.isStatic||i.isSleeping)&&(j.isStatic||j.isSleeping)||(d.midphaseTests+=1,!w.overlaps(i.bounds,j.bounds)))){var l,m=h.id(i,j),n=e[m];l=n&&n.isActive?n.collision:null;var o=k.collides(i,j,l);d.narrowphaseTests+=1,o.reused&&(d.narrowReuseCount+=1),o.collided&&(c.push(o),d.narrowDetections+=1)}}return c}}();var g={};!function(){g.create=function(a,b){return{buckets:{},pairs:{},pairsList:[],bucketWidth:a||48,bucketHeight:b||48}},g.update=function(c,g,h,k){var l,m,n,o,p,q=h.world,r=c.buckets,s=h.metrics,t=!1;for(s.broadphaseTests=0,l=0;l<g.length;l++){var u=g[l];if((!u.isSleeping||k)&&!(u.bounds.max.x<0||u.bounds.min.x>q.bounds.width||u.bounds.max.y<0||u.bounds.min.y>q.bounds.height)){var v=b(c,u);if(!u.region||v.id!==u.region.id||k){s.broadphaseTests+=1,(!u.region||k)&&(u.region=v);var w=a(v,u.region);for(m=w.startCol;m<=w.endCol;m++)for(n=w.startRow;n<=w.endRow;n++){p=d(m,n),o=r[p];var x=m>=v.startCol&&m<=v.endCol&&n>=v.startRow&&n<=v.endRow,y=m>=u.region.startCol&&m<=u.region.endCol&&n>=u.region.startRow&&n<=u.region.endRow;!x&&y&&y&&o&&i(c,o,u),(u.region===v||x&&!y||k)&&(o||(o=e(r,p)),f(c,o,u))}u.region=v,t=!0}}}t&&(c.pairsList=j(c))},g.clear=function(a){a.buckets={},a.pairs={},a.pairsList=[]};var a=function(a,b){var d=Math.min(a.startCol,b.startCol),e=Math.max(a.endCol,b.endCol),f=Math.min(a.startRow,b.startRow),g=Math.max(a.endRow,b.endRow);return c(d,e,f,g)},b=function(a,b){var d=b.bounds,e=Math.floor(d.min.x/a.bucketWidth),f=Math.floor(d.max.x/a.bucketWidth),g=Math.floor(d.min.y/a.bucketHeight),h=Math.floor(d.max.y/a.bucketHeight);return c(e,f,g,h)},c=function(a,b,c,d){return{id:a+","+b+","+c+","+d,startCol:a,endCol:b,startRow:c,endRow:d}},d=function(a,b){return a+","+b},e=function(a,b){var c=a[b]=[];return c},f=function(a,b,c){for(var d=0;d<b.length;d++){var e=b[d];if(!(c.id===e.id||c.isStatic&&e.isStatic)){var f=h.id(c,e),g=a.pairs[f];g?g[2]+=1:a.pairs[f]=[c,e,1]}}b.push(c)},i=function(a,b,c){b.splice(b.indexOf(c),1);for(var d=0;d<b.length;d++){var e=b[d],f=h.id(c,e),g=a.pairs[f];g&&(g[2]-=1)}},j=function(a){var b,c,d=[];b=n.keys(a.pairs);for(var e=0;e<b.length;e++)c=a.pairs[b[e]],c[2]>0?d.push(c):delete a.pairs[b[e]];return d}}();var h={};!function(){h.create=function(a,b){var c=a.bodyA,d=a.bodyB,e={id:h.id(c,d),bodyA:c,bodyB:d,contacts:{},activeContacts:[],separation:0,isActive:!0,timeCreated:b,timeUpdated:b,inverseMass:c.inverseMass+d.inverseMass,friction:Math.min(c.friction,d.friction),restitution:Math.max(c.restitution,d.restitution),slop:Math.max(c.slop,d.slop)};return h.update(e,a,b),e},h.update=function(a,b,c){var d=a.contacts,f=b.supports,g=a.activeContacts;if(a.collision=b,g.length=0,b.collided){for(var i=0;i<f.length;i++){var j=f[i],k=e.id(j),l=d[k];g.push(l?l:d[k]=e.create(j))}a.separation=b.depth,h.setActive(a,!0,c)}else a.isActive===!0&&h.setActive(a,!1,c)},h.setActive=function(a,b,c){b?(a.isActive=!0,a.timeUpdated=c):(a.isActive=!1,a.activeContacts.length=0)},h.id=function(a,b){return a.id<b.id?a.id+"_"+b.id:b.id+"_"+a.id}}();var i={};!function(){var a=1e3;i.create=function(a){return n.extend({table:{},list:[],collisionStart:[],collisionActive:[],collisionEnd:[]},a)},i.update=function(a,b,c){var d,e,f,g,i=a.list,j=a.table,k=a.collisionStart,l=a.collisionEnd,m=a.collisionActive,n=[];for(k.length=0,l.length=0,m.length=0,g=0;g<b.length;g++)d=b[g],d.collided&&(e=h.id(d.bodyA,d.bodyB),n.push(e),f=j[e],f?(f.isActive?m.push(f):k.push(f),h.update(f,d,c)):(f=h.create(d,c),j[e]=f,k.push(f),i.push(f)));for(g=0;g<i.length;g++)f=i[g],f.isActive&&-1===n.indexOf(f.id)&&(h.setActive(f,!1,c),l.push(f))},i.removeOld=function(b,c){var d,e,f,g,h=b.list,i=b.table,j=[];for(g=0;g<h.length;g++)d=h[g],e=d.collision,e.bodyA.isSleeping||e.bodyB.isSleeping?d.timeUpdated=c:c-d.timeUpdated>a&&j.push(g);for(g=0;g<j.length;g++)f=j[g]-g,d=h[f],delete i[d.id],h.splice(f,1)},i.clear=function(a){return a.table={},a.list.length=0,a.collisionStart.length=0,a.collisionActive.length=0,a.collisionEnd.length=0,a}}();var j={};!function(){var a=4,b=.2,c=.6;j.solvePosition=function(a){var c,d,e,f,g,h,i,j,k;for(c=0;c<a.length;c++)d=a[c],d.isActive&&(e=d.collision,f=e.bodyA,g=e.bodyB,h=e.supports[0],i=e.supportCorrected,j=e.normal,k=x.sub(x.add(g.positionImpulse,h),x.add(f.positionImpulse,i)),d.separation=x.dot(j,k));for(c=0;c<a.length;c++)d=a[c],d.isActive&&(e=d.collision,f=e.bodyA,g=e.bodyB,j=e.normal,positionImpulse=d.separation*b-d.slop,(f.isStatic||g.isStatic)&&(positionImpulse*=2),f.isStatic||f.isSleeping||(f.positionImpulse.x+=j.x*positionImpulse,f.positionImpulse.y+=j.y*positionImpulse),g.isStatic||g.isSleeping||(g.positionImpulse.x-=j.x*positionImpulse,g.positionImpulse.y-=j.y*positionImpulse))},j.postSolvePosition=function(a){for(var b=0;b<a.length;b++){var d=a[b];(0!==d.positionImpulse.x||0!==d.positionImpulse.y)&&(d.position.x+=d.positionImpulse.x,d.position.y+=d.positionImpulse.y,d.positionPrev.x+=d.positionImpulse.x,d.positionPrev.y+=d.positionImpulse.y,y.translate(d.vertices,d.positionImpulse),w.update(d.bounds,d.vertices,d.velocity),d.positionImpulse.x*=c,d.positionImpulse.y*=c)}},j.preSolveVelocity=function(a){var b,c,d,e,f,g,h,i,j,k,l,m,n,o,p={};for(b=0;b<a.length;b++)if(d=a[b],d.isActive)for(e=d.activeContacts,f=d.collision,g=f.bodyA,h=f.bodyB,i=f.normal,j=f.tangent,c=0;c<e.length;c++)k=e[c],l=k.vertex,m=k.normalImpulse,n=k.tangentImpulse,p.x=i.x*m+j.x*n,p.y=i.y*m+j.y*n,g.isStatic||g.isSleeping||(o=x.sub(l,g.position),g.positionPrev.x+=p.x*g.inverseMass,g.positionPrev.y+=p.y*g.inverseMass,g.anglePrev+=x.cross(o,p)*g.inverseInertia),h.isStatic||h.isSleeping||(o=x.sub(l,h.position),h.positionPrev.x-=p.x*h.inverseMass,h.positionPrev.y-=p.y*h.inverseMass,h.anglePrev-=x.cross(o,p)*h.inverseInertia)},j.solveVelocity=function(b){for(var c={},d=0;d<b.length;d++){var e=b[d];if(e.isActive){var f=e.collision,g=f.bodyA,h=f.bodyB,i=f.normal,j=f.tangent,k=e.activeContacts,l=1/k.length;g.velocity.x=g.position.x-g.positionPrev.x,g.velocity.y=g.position.y-g.positionPrev.y,h.velocity.x=h.position.x-h.positionPrev.x,h.velocity.y=h.position.y-h.positionPrev.y,g.angularVelocity=g.angle-g.anglePrev,h.angularVelocity=h.angle-h.anglePrev;for(var m=0;m<k.length;m++){var o=k[m],p=o.vertex,q=x.sub(p,g.position),r=x.sub(p,h.position),s=x.add(g.velocity,x.mult(x.perp(q),g.angularVelocity)),t=x.add(h.velocity,x.mult(x.perp(r),h.angularVelocity)),u=x.sub(s,t),v=x.dot(i,u),w=x.dot(j,u),y=Math.abs(w),z=n.sign(w),A=(1+e.restitution)*v,B=n.clamp(e.separation+v,0,1),C=w;y>B*e.friction&&(C=B*e.friction*z);var D=x.cross(q,i),E=x.cross(r,i),F=l/(e.inverseMass+g.inverseInertia*D*D+h.inverseInertia*E*E);if(A*=F,C*=F,0>v&&v*v>a)o.normalImpulse=0,o.tangentImpulse=0;else{var G=o.normalImpulse;o.normalImpulse=Math.min(o.normalImpulse+A,0),A=o.normalImpulse-G;var H=o.tangentImpulse;o.tangentImpulse=n.clamp(o.tangentImpulse+C,-y,y),C=o.tangentImpulse-H}c.x=i.x*A+j.x*C,c.y=i.y*A+j.y*C,g.isStatic||g.isSleeping||(g.positionPrev.x+=c.x*g.inverseMass,g.positionPrev.y+=c.y*g.inverseMass,g.anglePrev+=x.cross(q,c)*g.inverseInertia),h.isStatic||h.isSleeping||(h.positionPrev.x-=c.x*h.inverseMass,h.positionPrev.y-=c.y*h.inverseMass,h.anglePrev-=x.cross(r,c)*h.inverseInertia)}}}}}();var k={};!function(){k.collides=function(b,d,e){var f,g,h,i,j=e,k=!1;if(j){var l=b.speed*b.speed+b.angularSpeed*b.angularSpeed+d.speed*d.speed+d.angularSpeed*d.angularSpeed;k=j&&j.collided&&.2>l,i=j}else i={collided:!1,bodyA:b,bodyB:d};if(j&&k){var m=[j.bodyA.axes[j.axisNumber]];if(h=a(j.bodyA.vertices,j.bodyB.vertices,m),i.reused=!0,h.overlap<=0)return i.collided=!1,i}else{if(f=a(b.vertices,d.vertices,b.axes),f.overlap<=0)return i.collided=!1,i;if(g=a(d.vertices,b.vertices,d.axes),g.overlap<=0)return i.collided=!1,i;f.overlap<g.overlap?(h=f,i.bodyA=b,i.bodyB=d):(h=g,i.bodyA=d,i.bodyB=b),i.axisNumber=h.axisNumber}i.collided=!0,i.normal=h.axis,i.depth=h.overlap,b=i.bodyA,d=i.bodyB,x.dot(i.normal,x.sub(d.position,b.position))>0&&(i.normal=x.neg(i.normal)),i.tangent=x.perp(i.normal),i.penetration={x:i.normal.x*i.depth,y:i.normal.y*i.depth};var n=c(b,d,i.normal),o=[n[0]];if(y.contains(b.vertices,n[1]))o.push(n[1]);else{var p=c(d,b,x.neg(i.normal));y.contains(d.vertices,p[0])&&o.push(p[0]),o.length<2&&y.contains(d.vertices,p[1])&&o.push(p[1])}return i.supports=o,i.supportCorrected=x.sub(n[0],i.penetration),i};var a=function(a,c,d){for(var e,f,g={},h={},i={overlap:Number.MAX_VALUE},j=0;j<d.length;j++){if(f=d[j],b(g,a,f),b(h,c,f),e=g.min<h.min?g.max-h.min:h.max-g.min,0>=e)return i.overlap=e,i;e<i.overlap&&(i.overlap=e,i.axis=f,i.axisNumber=j)}return i},b=function(a,b,c){for(var d=x.dot(b[0],c),e=d,f=1;f<b.length;f+=1){var g=x.dot(b[f],c);g>e?e=g:d>g&&(d=g)}a.min=d,a.max=e},c=function(a,b,c){for(var d,e,f=Number.MAX_VALUE,g={x:0,y:0},h=b.vertices,i=a.position,j=h[0],k=h[1],l=0;l<h.length;l++)e=h[l],g.x=e.x-i.x,g.y=e.y-i.y,d=-x.dot(c,g),f>d&&(f=d,j=e);var m=j.index-1>=0?j.index-1:h.length-1;e=h[m],g.x=e.x-i.x,g.y=e.y-i.y,f=-x.dot(c,g),k=e;var n=(j.index+1)%h.length;return e=h[n],g.x=e.x-i.x,g.y=e.y-i.y,d=-x.dot(c,g),f>d&&(f=d,k=e),[j,k]}}();var l={};!function(){var a=1e-6,b=.001,c=0;l.create=function(b){var c=b;c.bodyA&&!c.pointA&&(c.pointA={x:0,y:0}),c.bodyB&&!c.pointB&&(c.pointB={x:0,y:0});var d=c.bodyA?x.add(c.bodyA.position,c.pointA):c.pointA,e=c.bodyB?x.add(c.bodyB.position,c.pointB):c.pointB,f=x.magnitude(x.sub(d,e));c.length=c.length||f||a;var g={visible:!0,lineWidth:2,strokeStyle:"#666"};return c.render=n.extend(g,c.render),c.id=c.id||l.nextId(),c.type="constraint",c.stiffness=c.stiffness||1,c.angularStiffness=c.angularStiffness||0,c.angleA=c.bodyA?c.bodyA.angle:c.angleA,c.angleB=c.bodyB?c.bodyB.angle:c.angleB,c},l.solveAll=function(a){for(var b=0;b<a.length;b++)l.solve(a[b])},l.solve=function(c){var d=c.bodyA,e=c.bodyB,f=c.pointA,g=c.pointB;d&&!d.isStatic&&(c.pointA=x.rotate(f,d.angle-c.angleA),c.angleA=d.angle),e&&!e.isStatic&&(c.pointB=x.rotate(g,e.angle-c.angleB),c.angleB=e.angle);var h=f,i=g;if(d&&(h=x.add(d.position,f)),e&&(i=x.add(e.position,g)),h&&i){var j=x.sub(h,i),k=x.magnitude(j);0===k&&(k=a);var l=(k-c.length)/k,m=x.div(j,k),o=x.mult(j,.5*l*c.stiffness);if(!(Math.abs(1-k/c.length)<b)){var p,q,r,t,u,v,w,y;d&&!d.isStatic?(r={x:h.x-d.position.x+o.x,y:h.y-d.position.y+o.y},d.velocity.x=d.position.x-d.positionPrev.x,d.velocity.y=d.position.y-d.positionPrev.y,d.angularVelocity=d.angle-d.anglePrev,p=x.add(d.velocity,x.mult(x.perp(r),d.angularVelocity)),u=x.dot(r,m),w=d.inverseMass+d.inverseInertia*u*u):(p={x:0,y:0},w=d?d.inverseMass:0),e&&!e.isStatic?(t={x:i.x-e.position.x-o.x,y:i.y-e.position.y-o.y},e.velocity.x=e.position.x-e.positionPrev.x,e.velocity.y=e.position.y-e.positionPrev.y,e.angularVelocity=e.angle-e.anglePrev,q=x.add(e.velocity,x.mult(x.perp(t),e.angularVelocity)),v=x.dot(t,m),y=e.inverseMass+e.inverseInertia*v*v):(q={x:0,y:0},y=e?e.inverseMass:0);var z=x.sub(q,p),A=x.dot(m,z)/(w+y);A>0&&(A=0);var B,C={x:m.x*A,y:m.y*A};d&&!d.isStatic&&(B=x.cross(r,C)*d.inverseInertia*(1-c.angularStiffness),s.set(d,!1),B=n.clamp(B,-.01,.01),d.constraintImpulse.x-=o.x,d.constraintImpulse.y-=o.y,d.constraintImpulse.angle+=B,d.position.x-=o.x,d.position.y-=o.y,d.angle+=B),e&&!e.isStatic&&(B=x.cross(t,C)*e.inverseInertia*(1-c.angularStiffness),s.set(e,!1),B=n.clamp(B,-.01,.01),e.constraintImpulse.x+=o.x,e.constraintImpulse.y+=o.y,e.constraintImpulse.angle-=B,e.position.x+=o.x,e.position.y+=o.y,e.angle-=B)}}},l.postSolveAll=function(a){for(var b=0;b<a.length;b++){var c=a[b],d=c.constraintImpulse;y.translate(c.vertices,d),0!==d.angle&&(y.rotate(c.vertices,d.angle,c.position),v.rotate(c.axes,d.angle),d.angle=0),w.update(c.bounds,c.vertices),d.x=0,d.y=0}},l.nextId=function(){return c++}}();var m={};!function(){m.create=function(a,b){var d=a.input.mouse,e=l.create({pointA:d.position,pointB:{x:0,y:0},length:.01,stiffness:.1,angularStiffness:1,render:{strokeStyle:"#90EE90",lineWidth:3}}),f={type:"mouseConstraint",mouse:d,dragBody:null,dragPoint:null,constraint:e},g=n.extend(f,b);return p.on(a,"tick",function(){var b=c.allBodies(a.world);m.update(g,b)}),g},m.update=function(a,b){var c=a.mouse,d=a.constraint;if(0===c.button){if(!d.bodyB)for(var e=0;e<b.length;e++){var f=b[e];w.contains(f.bounds,c.position)&&y.contains(f.vertices,c.position)&&(d.pointA=c.position,d.bodyB=f,d.pointB={x:c.position.x-f.position.x,y:c.position.y-f.position.y},d.angleB=f.angle,s.set(f,!1))}}else d.bodyB=null,d.pointB=null;d.bodyB&&(s.set(d.bodyB,!1),d.pointA=c.position)}}();var n={};!function(){n.extend=function(a,b){var c,d,e;"boolean"==typeof b?(c=2,e=b):(c=1,e=!0),d=Array.prototype.slice.call(arguments,c);for(var f=0;f<d.length;f++){var g=d[f];if(g)for(var h in g)e&&g[h]&&g[h].constructor===Object?a[h]&&a[h].constructor!==Object?a[h]=g[h]:(a[h]=a[h]||{},n.extend(a[h],e,g[h])):a[h]=g[h]}return a},n.clone=function(a,b){return n.extend({},b,a)},n.keys=function(a){if(Object.keys)return Object.keys(a);var b=[];for(var c in a)b.push(c);return b},n.values=function(a){var b=[];if(Object.keys){for(var c=Object.keys(a),d=0;d<c.length;d++)b.push(a[c[d]]);return b}for(var e in a)b.push(a[e]);return b},n.shadeColor=function(a,b){var c=parseInt(a.slice(1),16),d=Math.round(2.55*b),e=(c>>16)+d,f=(c>>8&255)+d,g=(255&c)+d;return"#"+(16777216+65536*(255>e?1>e?0:e:255)+256*(255>f?1>f?0:f:255)+(255>g?1>g?0:g:255)).toString(16).slice(1)},n.shuffle=function(a){for(var b=a.length-1;b>0;b--){var c=Math.floor(Math.random()*(b+1)),d=a[b];a[b]=a[c],a[c]=d}return a},n.choose=function(a){return a[Math.floor(Math.random()*a.length)]},n.isElement=function(a){try{return a instanceof HTMLElement}catch(b){return"object"==typeof a&&1===a.nodeType&&"object"==typeof a.style&&"object"==typeof a.ownerDocument}},n.clamp=function(a,b,c){return b>a?b:a>c?c:a},n.sign=function(a){return 0>a?-1:1},n.now=function(){var a=window.performance;return a?(a.now=a.now||a.webkitNow||a.msNow||a.oNow||a.mozNow,+a.now()):+new Date},n.random=function(a,b){return a+Math.random()*(b-a)},n.colorToNumber=function(a){return a=a.replace("#",""),3==a.length&&(a=a.charAt(0)+a.charAt(0)+a.charAt(1)+a.charAt(1)+a.charAt(2)+a.charAt(2)),parseInt(a,16)},n.log=function(a,b){if(console&&console.log){var c;switch(b){case"warn":c="color: coral";break;case"error":c="color: red"}console.log("%c [Matter] "+b+": "+a,c)}}}();var o={};!function(){var a=60,e=a,h=1e3/a,k=window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame||window.msRequestAnimationFrame||function(a){window.setTimeout(function(){a(n.now())},h)};o.create=function(b,c){c=n.isElement(b)?c:b,b=n.isElement(b)?b:null;var e={enabled:!0,positionIterations:6,velocityIterations:4,constraintIterations:2,enableSleeping:!1,timeScale:1,input:{},events:[],timing:{fps:a,timestamp:0,delta:h,correction:1,deltaMin:1e3/a,deltaMax:1e3/(.5*a)},render:{element:b,controller:A}},j=n.extend(e,c);return j.render=j.render.controller.create(j.render),j.world=d.create(j.world),j.pairs=i.create(),j.metrics=j.metrics||q.create(),j.input.mouse=j.input.mouse||r.create(j.render.canvas),j.broadphase=j.broadphase||{current:"grid",grid:{controller:g,instance:g.create(),detector:f.collisions},bruteForce:{detector:f.bruteForce}},j},o.run=function(a){var b,c,d=a.timing,f=0,g=0,i=[];!function j(l){if(k(j),a.enabled){l=l||0;var n={timestamp:l};p.trigger(a,"beforeTick",n),b=l-d.timestamp||h,i.push(b),i=i.slice(-e),b=Math.min.apply(null,i),b=b<a.timing.deltaMin?a.timing.deltaMin:b,b=b>a.timing.deltaMax?a.timing.deltaMax:b,c=b/d.delta,d.timestamp=l,d.correction=c,d.delta=b,g+=1,l-f>=1e3&&(d.fps=g*((l-f)/1e3),f=l,g=0),p.trigger(a,"tick beforeUpdate",n),a.world.isModified&&a.render.controller.clear(a.render),o.update(a,b,c),t(a),m(a),p.trigger(a,"afterUpdate beforeRender",n),a.render.options.enabled&&a.render.controller.world(a),p.trigger(a,"afterTick afterRender",n)}}()},o.update=function(a,d,e){var f,g=a.world,h=a.broadphase[a.broadphase.current],k=[],m=c.allBodies(g),n=c.allConstraints(g);for(q.reset(a.metrics),a.enableSleeping&&s.update(m),b.applyGravityAll(m,g.gravity),b.updateAll(m,d*a.timeScale,e,g.bounds),f=0;f<a.constraintIterations;f++)l.solveAll(n);l.postSolveAll(m),h.controller?(g.isModified&&h.controller.clear(h.instance),h.controller.update(h.instance,m,a,g.isModified),k=h.instance.pairsList):k=m;var o=h.detector(k,a),p=a.pairs,r=a.timing.timestamp;for(i.update(p,o,r),i.removeOld(p,r),a.enableSleeping&&s.afterCollisions(p.list),j.preSolveVelocity(p.list),f=0;f<a.velocityIterations;f++)j.solveVelocity(p.list);for(f=0;f<a.positionIterations;f++)j.solvePosition(p.list);return j.postSolvePosition(m),q.update(a.metrics,a),b.resetForcesAll(m),g.isModified&&c.setModified(g,!1,!1,!0),a},o.merge=function(a,d){if(n.extend(a,d),d.world){a.world=d.world,o.clear(a);for(var e=c.allBodies(a.world),f=0;f<e.length;f++){var g=e[f];s.set(g,!1),g.id=b.nextId()}}},o.clear=function(a){var b=a.world;i.clear(a.pairs);var d=a.broadphase[a.broadphase.current];if(d.controller){var e=c.allBodies(b);d.controller.clear(d.instance),d.controller.update(d.instance,e,a,!0)}};var m=function(a){var b=a.input.mouse,c=b.sourceEvents;c.mousemove&&p.trigger(a,"mousemove",{mouse:b}),c.mousedown&&p.trigger(a,"mousedown",{mouse:b}),c.mouseup&&p.trigger(a,"mouseup",{mouse:b}),r.clearSourceEvents(b)},t=function(a){var b=a.pairs;b.collisionStart.length>0&&p.trigger(a,"collisionStart",{pairs:b.collisionStart}),b.collisionActive.length>0&&p.trigger(a,"collisionActive",{pairs:b.collisionActive}),b.collisionEnd.length>0&&p.trigger(a,"collisionEnd",{pairs:b.collisionEnd})}}();var p={};!function(){p.on=function(a,b,c){for(var d,e=b.split(" "),f=0;f<e.length;f++)d=e[f],a.events=a.events||{},a.events[d]=a.events[d]||[],a.events[d].push(c)},p.off=function(a,b){if(!b)return void(a.events={});for(var c=b.split(" "),d=0;d<c.length;d++)a.events[c[d]]=[]},p.trigger=function(a,b,c){var d,e,f,g;if(a.events){c||(c={}),d=b.split(" ");for(var h=0;h<d.length;h++)if(e=d[h],f=a.events[e]){g=n.clone(c,!1),g.name=e,g.source=a;for(var i=0;i<f.length;i++)f[i].apply(a,[g])}}}}();var q={};!function(){q.create=function(){return{extended:!1,narrowDetections:0,narrowphaseTests:0,narrowReuse:0,narrowReuseCount:0,midphaseTests:0,broadphaseTests:0,narrowEff:1e-4,midEff:1e-4,broadEff:1e-4,collisions:0,buckets:0,bodies:0,pairs:0}},q.reset=function(a){a.extended&&(a.narrowDetections=0,a.narrowphaseTests=0,a.narrowReuse=0,a.narrowReuseCount=0,a.midphaseTests=0,a.broadphaseTests=0,a.narrowEff=0,a.midEff=0,a.broadEff=0,a.collisions=0,a.buckets=0,a.pairs=0,a.bodies=0)},q.update=function(a,b){if(a.extended){var d=b.world,e=(b.broadphase[b.broadphase.current],c.allBodies(d));a.collisions=a.narrowDetections,a.pairs=b.pairs.list.length,a.bodies=e.length,a.midEff=(a.narrowDetections/(a.midphaseTests||1)).toFixed(2),a.narrowEff=(a.narrowDetections/(a.narrowphaseTests||1)).toFixed(2),a.broadEff=(1-a.broadphaseTests/(e.length||1)).toFixed(2),a.narrowReuse=(a.narrowReuseCount/(a.narrowphaseTests||1)).toFixed(2)}}}();var r;!function(){r=function(b){var c=this;this.element=b||document.body,this.position={x:0,y:0},this.mousedownPosition={x:0,y:0},this.mouseupPosition={x:0,y:0},this.button=-1,this.sourceEvents={mousemove:null,mousedown:null,mouseup:null},this.mousemove=function(b){var d=a(b,c.element),e=b.changedTouches;e&&(c.button=0,b.preventDefault()),c.position=d,c.sourceEvents.mousemove=b},this.mousedown=function(b){var d=a(b,c.element),e=b.changedTouches;e?(c.button=0,b.preventDefault()):c.button=b.button,c.position=c.mousedownPosition=d,c.sourceEvents.mousedown=b},this.mouseup=function(b){var d=a(b,c.element),e=b.changedTouches;e&&b.preventDefault(),c.button=-1,c.position=c.mouseupPosition=d,c.sourceEvents.mouseup=b},r.setElement(c,c.element)},r.create=function(a){return new r(a)},r.setElement=function(a,b){a.element=b,b.addEventListener("mousemove",a.mousemove),b.addEventListener("mousedown",a.mousedown),b.addEventListener("mouseup",a.mouseup),b.addEventListener("touchmove",a.mousemove),b.addEventListener("touchstart",a.mousedown),b.addEventListener("touchend",a.mouseup)},r.clearSourceEvents=function(a){a.sourceEvents.mousemove=null,a.sourceEvents.mousedown=null,a.sourceEvents.mouseup=null};var a=function(a,b){var c,d,e=b.getBoundingClientRect(),f=void 0!==window.pageXOffset?window.pageXOffset:(document.documentElement||document.body.parentNode||document.body).scrollLeft,g=void 0!==window.pageYOffset?window.pageYOffset:(document.documentElement||document.body.parentNode||document.body).scrollTop,h=a.changedTouches;return h?(c=h[0].pageX-e.left-f,d=h[0].pageY-e.top-g):(c=a.pageX-e.left-f,d=a.pageY-e.top-g),{x:c/(b.clientWidth/b.width),y:d/(b.clientHeight/b.height)}}}();var s={};!function(){var a=.18,b=.08,c=.9;s.update=function(a){for(var d=0;d<a.length;d++){var e=a[d],f=e.speed*e.speed+e.angularSpeed*e.angularSpeed;if(e.force.x>0||e.force.y>0)s.set(e,!1);else{var g=Math.min(e.motion,f),h=Math.max(e.motion,f);e.motion=c*g+(1-c)*h,e.sleepThreshold>0&&e.motion<b?(e.sleepCounter+=1,e.sleepCounter>=e.sleepThreshold&&s.set(e,!0)):e.sleepCounter>0&&(e.sleepCounter-=1)}}},s.afterCollisions=function(b){for(var c=0;c<b.length;c++){var d=b[c];if(d.isActive){var e=d.collision,f=e.bodyA,g=e.bodyB;if(!(f.isSleeping&&g.isSleeping||f.isStatic||g.isStatic)&&(f.isSleeping||g.isSleeping)){var h=f.isSleeping&&!f.isStatic?f:g,i=h===f?g:f;!h.isStatic&&i.motion>a&&s.set(h,!1)}}}},s.set=function(a,b){b?(a.isSleeping=!0,a.sleepCounter=a.sleepThreshold,a.positionImpulse.x=0,a.positionImpulse.y=0,a.positionPrev.x=a.position.x,a.positionPrev.y=a.position.y,a.anglePrev=a.angle,a.speed=0,a.angularSpeed=0,a.motion=0):(a.isSleeping=!1,a.sleepCounter=0)}}();var t={};!function(){t.rectangle=function(a,c,d,e,f){f=f||{};var g={position:{x:a,y:c},render:{path:"L 0 0 L "+d+" 0 L "+d+" "+e+" L 0 "+e}};return b.create(n.extend({},g,f))},t.trapezoid=function(a,c,d,e,f,g){g=g||{},f*=.5;var h=(1-2*f)*d,i=d*f,j=i+h,k=j+i,l={position:{x:a,y:c},render:{path:"L 0 0 L "+i+" "+-e+" L "+j+" "+-e+" L "+k+" 0"}};return b.create(n.extend({},l,g))},t.circle=function(a,b,c,d,e){d=d||{},e=e||25;var f=Math.ceil(Math.max(10,Math.min(e,c)));return f%2===1&&(f+=1),d.circleRadius=c,t.polygon(a,b,f,c,d)},t.polygon=function(a,c,d,e,f){if(f=f||{},3>d)return t.circle(a,c,e,f);for(var g=2*Math.PI/d,h="",i=.5*g,j=0;d>j;j+=1){var k=i+j*g,l=Math.cos(k)*e,m=Math.sin(k)*e;h+="L "+l.toFixed(3)+" "+m.toFixed(3)+" "}var o={position:{x:a,y:c},render:{path:h}};return b.create(n.extend({},o,f))}}();var u={};!function(){u.stack=function(a,d,e,f,g,h,i){for(var j,k=c.create(),l=a,m=d,n=0,o=0;f>o;o++){for(var p=0,q=0;e>q;q++){var r=i(l,m,q,o,j,n);if(r){var s=r.bounds.max.y-r.bounds.min.y,t=r.bounds.max.x-r.bounds.min.x;s>p&&(p=s),b.translate(r,{x:.5*t,y:.5*s}),l=r.bounds.max.x+g,c.addBody(k,r),j=r,n+=1}}m+=p+h,l=a}return k},u.chain=function(a,b,d,e,f,g){for(var h=a.bodies,i=1;i<h.length;i++){var j=h[i-1],k=h[i],m=j.bounds.max.y-j.bounds.min.y,o=j.bounds.max.x-j.bounds.min.x,p=k.bounds.max.y-k.bounds.min.y,q=k.bounds.max.x-k.bounds.min.x,r={bodyA:j,pointA:{x:o*b,y:m*d},bodyB:k,pointB:{x:q*e,y:p*f}},s=n.extend(r,g);c.addConstraint(a,l.create(s))}return a},u.mesh=function(a,b,d,e,f){var g,h,i,j,k,m=a.bodies;for(g=0;d>g;g++){for(h=0;b>h;h++)h>0&&(i=m[h-1+g*b],j=m[h+g*b],c.addConstraint(a,l.create(n.extend({bodyA:i,bodyB:j},f))));for(h=0;b>h;h++)g>0&&(i=m[h+(g-1)*b],j=m[h+g*b],c.addConstraint(a,l.create(n.extend({bodyA:i,bodyB:j},f))),e&&h>0&&(k=m[h-1+(g-1)*b],c.addConstraint(a,l.create(n.extend({bodyA:k,bodyB:j},f)))),e&&b-1>h&&(k=m[h+1+(g-1)*b],c.addConstraint(a,l.create(n.extend({bodyA:k,bodyB:j},f)))))}return a},u.pyramid=function(a,c,d,e,f,g,h){return u.stack(a,c,d,e,f,g,function(c,g,i,j,k,l){var m=Math.min(e,Math.ceil(d/2)),n=k?k.bounds.max.x-k.bounds.min.x:0;if(!(j>m)){j=m-j;var o=j,p=d-1-j;if(!(o>i||i>p)){1===l&&b.translate(k,{x:(i+(d%2===1?1:-1))*n,y:0});var q=k?i*n:0;return h(a+q+i*f,g,i,j,k,l)}}})},u.newtonsCradle=function(a,b,d,e,f){for(var g=c.create(),h=0;d>h;h++){var i=1.9,j=t.circle(a+h*e*i,b+f,e,{inertia:99999,restitution:1,friction:0,frictionAir:1e-4,slop:.01}),k=l.create({pointA:{x:a+h*e*i,y:b},bodyB:j});c.addBody(g,j),c.addConstraint(g,k)}return g},u.car=function(a,d,e,f,g){var h=b.nextGroupId(),i=-20,j=.5*-e+i,k=.5*e-i,m=0,n=c.create(),o=t.trapezoid(a,d,e,f,.3,{groupId:h,friction:.01}),p=t.circle(a+j,d+m,g,{groupId:h,restitution:.5,friction:.9,density:.01}),q=t.circle(a+k,d+m,g,{groupId:h,restitution:.5,friction:.9,density:.01}),r=l.create({bodyA:o,pointA:{x:j,y:m},bodyB:p,stiffness:.5}),s=l.create({bodyA:o,pointA:{x:k,y:m},bodyB:q,stiffness:.5});return c.addBody(n,o),c.addBody(n,p),c.addBody(n,q),c.addConstraint(n,r),c.addConstraint(n,s),n},u.softBody=function(a,b,c,d,e,f,g,h,i,j){i=n.extend({inertia:1/0},i),j=n.extend({stiffness:.4},j);var k=u.stack(a,b,c,d,e,f,function(a,b){return t.circle(a,b,h,i)});return u.mesh(k,c,d,g,j),k}}();var v={};!function(){v.fromVertices=function(a){for(var b={},c=0;c<a.length;c++){var d=(c+1)%a.length,e=x.normalise({x:a[d].y-a[c].y,y:a[c].x-a[d].x}),f=0===e.y?1/0:e.x/e.y;f=f.toFixed(3).toString(),b[f]=e}return n.values(b)},v.rotate=function(a,b){if(0!==b)for(var c=Math.cos(b),d=Math.sin(b),e=0;e<a.length;e++){var f,g=a[e];
f=g.x*c-g.y*d,g.y=g.x*d+g.y*c,g.x=f}}}();var w={};!function(){w.create=function(a){var b={min:{x:0,y:0},max:{x:0,y:0}};return w.update(b,a),b},w.update=function(a,b,c){a.min.x=Number.MAX_VALUE,a.max.x=Number.MIN_VALUE,a.min.y=Number.MAX_VALUE,a.max.y=Number.MIN_VALUE;for(var d=0;d<b.length;d++){var e=b[d];e.x>a.max.x&&(a.max.x=e.x),e.x<a.min.x&&(a.min.x=e.x),e.y>a.max.y&&(a.max.y=e.y),e.y<a.min.y&&(a.min.y=e.y)}c&&(c.x>0?a.max.x+=c.x:a.min.x+=c.x,c.y>0?a.max.y+=c.y:a.min.y+=c.y)},w.contains=function(a,b){return b.x>=a.min.x&&b.x<=a.max.x&&b.y>=a.min.y&&b.y<=a.max.y},w.overlaps=function(a,b){return a.min.x<=b.max.x&&a.max.x>=b.min.x&&a.max.y>=b.min.y&&a.min.y<=b.max.y}}();var x={};!function(){x.magnitude=function(a){return Math.sqrt(a.x*a.x+a.y*a.y)},x.magnitudeSquared=function(a){return a.x*a.x+a.y*a.y},x.rotate=function(a,b){var c=Math.cos(b),d=Math.sin(b);return{x:a.x*c-a.y*d,y:a.x*d+a.y*c}},x.rotateAbout=function(a,b,c){var d=Math.cos(b),e=Math.sin(b);return{x:c.x+((a.x-c.x)*d-(a.y-c.y)*e),y:c.y+((a.x-c.x)*e+(a.y-c.y)*d)}},x.normalise=function(a){var b=x.magnitude(a);return 0===b?{x:0,y:0}:{x:a.x/b,y:a.y/b}},x.dot=function(a,b){return a.x*b.x+a.y*b.y},x.cross=function(a,b){return a.x*b.y-a.y*b.x},x.add=function(a,b){return{x:a.x+b.x,y:a.y+b.y}},x.sub=function(a,b){return{x:a.x-b.x,y:a.y-b.y}},x.mult=function(a,b){return{x:a.x*b,y:a.y*b}},x.div=function(a,b){return{x:a.x/b,y:a.y/b}},x.perp=function(a,b){return b=b===!0?-1:1,{x:b*-a.y,y:b*a.x}},x.neg=function(a){return{x:-a.x,y:-a.y}}}();var y={};!function(){y.create=function(a,b){for(var c=0;c<a.length;c++)a[c].index=c,a[c].body=b},y.fromPath=function(a){var b=/L\s*([\-\d\.]*)\s*([\-\d\.]*)/gi,c=[];return a.replace(b,function(a,b,d){c.push({x:parseFloat(b,10),y:parseFloat(d,10)})}),c},y.centre=function(a){for(var b=0,c=0,d=0;d<a.length;d++)b+=a[d].x,c+=a[d].y;return{x:b/a.length,y:c/a.length}},y.area=function(a){for(var b=0,c=a.length-1,d=0;d<a.length;d++)b+=(a[c].x-a[d].x)*(a[c].y+a[d].y),c=d;return Math.abs(b)/2},y.inertia=function(a,b){for(var c,d,e=0,f=0,g=a,h=0;h<g.length;h++)d=(h+1)%g.length,c=Math.abs(x.cross(g[d],g[h])),e+=c*(x.dot(g[d],g[d])+x.dot(g[d],g[h])+x.dot(g[h],g[h])),f+=c;return b/6*(e/f)},y.translate=function(a,b,c){var d;if(c)for(d=0;d<a.length;d++)a[d].x+=b.x*c,a[d].y+=b.y*c;else for(d=0;d<a.length;d++)a[d].x+=b.x,a[d].y+=b.y},y.rotate=function(a,b,c){if(0!==b)for(var d=Math.cos(b),e=Math.sin(b),f=0;f<a.length;f++){var g=a[f],h=g.x-c.x,i=g.y-c.y;g.x=c.x+(h*d-i*e),g.y=c.y+(h*e+i*d)}},y.contains=function(a,b){for(var c=0;c<a.length;c++){var d=a[c],e=a[(c+1)%a.length];if((b.x-d.x)*(e.y-d.y)+(b.y-d.y)*(d.x-e.x)>0)return!1}return!0}}();var z={};!function(){z.create=function(a,b){var e,f=window.dat&&window.localStorage;if(!f)return void console.log("Could not create GUI. Check dat.gui library is loaded first.");var g=new dat.GUI(b);Resurrect?(e=new Resurrect({prefix:"$"}),e.parse=e.resurrect):e=JSON;var h={datGui:g,amount:1,size:40,sides:4,density:.001,restitution:0,friction:.1,frictionAir:.01,renderer:"canvas"},i={addBody:function(){for(var b={density:h.density,friction:h.friction,frictionAir:h.frictionAir,restitution:h.restitution},c=0;c<h.amount;c++)d.add(a.world,t.polygon(120+c*h.size+50*c,200,h.sides,h.size,b))},clear:function(){d.clear(a.world,!0),o.clear(a);var b=a.render.controller;b.clear&&b.clear(a.render),p.trigger(h,"clear")},save:function(){localStorage&&e&&localStorage.setItem("world",e.stringify(a.world)),p.trigger(h,"save")},load:function(){var b;localStorage&&e&&(b=e.parse(localStorage.getItem("world"))),b&&o.merge(a,{world:b}),p.trigger(h,"load")}},j=g.addFolder("Metrics");j.add(a.timing,"fps").listen(),a.metrics.extended?(j.add(a.timing,"delta").listen(),j.add(a.timing,"correction").listen(),j.add(a.metrics,"bodies").listen(),j.add(a.metrics,"collisions").listen(),j.add(a.metrics,"pairs").listen(),j.add(a.metrics,"broadEff").listen(),j.add(a.metrics,"midEff").listen(),j.add(a.metrics,"narrowEff").listen(),j.add(a.metrics,"narrowReuse").listen(),j.close()):j.open();var k=g.addFolder("Add Body");k.add(h,"amount",1,5).step(1),k.add(h,"size",5,150).step(1),k.add(h,"sides",1,8).step(1),k.add(h,"density",1e-4,.01).step(.001),k.add(h,"friction",0,1).step(.05),k.add(h,"frictionAir",0,10*h.frictionAir).step(h.frictionAir/10),k.add(h,"restitution",0,1).step(.1),k.add(i,"addBody"),k.open();var l=g.addFolder("World");l.add(i,"load"),l.add(i,"save"),l.add(i,"clear"),l.open();var m=l.addFolder("Gravity");m.add(a.world.gravity,"x",-1,1).step(.01),m.add(a.world.gravity,"y",-1,1).step(.01),m.open();var n=g.addFolder("Engine");n.add(a,"enableSleeping"),n.add(a.broadphase,"current",["grid","bruteForce"]).onFinishChange(function(){c.setModified(a.world,!0,!1,!1)}),n.add(a,"timeScale",.1,2).step(.1),n.add(a,"velocityIterations",1,10).step(1),n.add(a,"positionIterations",1,10).step(1),n.add(a,"enabled"),n.open();var q=g.addFolder("Render");return q.add(h,"renderer",["canvas","webgl"]).onFinishChange(function(b){var c;"canvas"===b&&(c=A),"webgl"===b&&(c=B),a.render.element.removeChild(a.render.canvas);var d=a.render.options;a.render=c.create({element:a.render.element,options:d}),a.render.options=d,r.setElement(a.input.mouse,a.render.canvas)}),q.add(a.render.options,"wireframes"),q.add(a.render.options,"showDebug"),q.add(a.render.options,"showPositions"),q.add(a.render.options,"showBroadphase"),q.add(a.render.options,"showBounds"),q.add(a.render.options,"showVelocity"),q.add(a.render.options,"showCollisions"),q.add(a.render.options,"showAxes"),q.add(a.render.options,"showAngleIndicator"),q.add(a.render.options,"showSleeping"),q.add(a.render.options,"showIds"),q.add(a.render.options,"showShadows"),q.add(a.render.options,"enabled"),q.open(),h},z.update=function(a,b){var c;b=b||a.datGui;for(c in b.__folders)z.update(a,b.__folders[c]);for(c in b.__controllers){var d=b.__controllers[c];d.updateDisplay&&d.updateDisplay()}},z.closeAll=function(a){var b=a.datGui;for(var c in b.__folders)b.__folders[c].close()}}();var A={};!function(){A.create=function(b){var c={controller:A,element:null,canvas:null,options:{width:800,height:600,background:"#fafafa",wireframeBackground:"#222",enabled:!0,wireframes:!0,showSleeping:!0,showDebug:!1,showBroadphase:!1,showBounds:!1,showVelocity:!1,showCollisions:!1,showAxes:!1,showPositions:!1,showAngleIndicator:!1,showIds:!1,showShadows:!1}},d=n.extend(c,b);return d.canvas=d.canvas||a(d.options.width,d.options.height),d.context=d.canvas.getContext("2d"),d.textures={},A.setBackground(d,d.options.background),n.isElement(d.element)?d.element.appendChild(d.canvas):n.log('No "render.element" passed, "render.canvas" was not inserted into document.',"warn"),d},A.clear=function(){},A.setBackground=function(a,b){if(a.currentBackground!==b){var c=b;/(jpg|gif|png)$/.test(b)&&(c="url("+b+")"),a.canvas.style.background=c,a.canvas.style.backgroundSize="contain",a.currentBackground=b}},A.world=function(a){var b=a.render,d=a.world,e=b.canvas,f=b.context,g=b.options,h=c.allBodies(d),i=c.allConstraints(d);g.wireframes?A.setBackground(b,g.wireframeBackground):A.setBackground(b,g.background),f.globalCompositeOperation="source-in",f.fillStyle="transparent",f.fillRect(0,0,e.width,e.height),f.globalCompositeOperation="source-over",!g.wireframes||a.enableSleeping&&g.showSleeping?A.bodies(a,h,f):A.bodyWireframes(a,h,f),g.showBounds&&A.bodyBounds(a,h,f),(g.showAxes||g.showAngleIndicator)&&A.bodyAxes(a,h,f),g.showPositions&&A.bodyPositions(a,h,f),g.showVelocity&&A.bodyVelocity(a,h,f),g.showIds&&A.bodyIds(a,h,f),g.showCollisions&&A.collisions(a,a.pairs.list,f),A.constraints(i,f),g.showBroadphase&&"grid"===a.broadphase.current&&A.grid(a,a.broadphase[a.broadphase.current].instance,f),g.showDebug&&A.debug(a,f)},A.debug=function(a,b){var d=b,e=a.world,f=a.render,h=f.options,i=c.allBodies(e),j="    ";if(a.timing.timestamp-(f.debugTimestamp||0)>=500){var k="";k+="fps: "+Math.round(a.timing.fps)+j,a.metrics.extended&&(k+="delta: "+a.timing.delta.toFixed(3)+j,k+="correction: "+a.timing.correction.toFixed(3)+j,k+="bodies: "+i.length+j,a.broadphase.controller===g&&(k+="buckets: "+a.metrics.buckets+j),k+="\n",k+="collisions: "+a.metrics.collisions+j,k+="pairs: "+a.pairs.list.length+j,k+="broad: "+a.metrics.broadEff+j,k+="mid: "+a.metrics.midEff+j,k+="narrow: "+a.metrics.narrowEff+j),f.debugString=k,f.debugTimestamp=a.timing.timestamp}if(f.debugString){d.font="12px Arial",d.fillStyle=h.wireframes?"rgba(255,255,255,0.5)":"rgba(0,0,0,0.5)";for(var l=f.debugString.split("\n"),m=0;m<l.length;m++)d.fillText(l[m],50,50+18*m)}},A.constraints=function(a,b){for(var c=b,d=0;d<a.length;d++){var e=a[d];if(e.render.visible&&e.pointA&&e.pointB){var f=e.bodyA,g=e.bodyB;f?(c.beginPath(),c.moveTo(f.position.x+e.pointA.x,f.position.y+e.pointA.y)):(c.beginPath(),c.moveTo(e.pointA.x,e.pointA.y)),g?c.lineTo(g.position.x+e.pointB.x,g.position.y+e.pointB.y):c.lineTo(e.pointB.x,e.pointB.y),c.lineWidth=e.render.lineWidth,c.strokeStyle=e.render.strokeStyle,c.stroke()}}},A.bodyShadows=function(a,b,c){for(var d=c,e=a.render,f=(e.options,0);f<b.length;f++){var g=b[f];if(g.render.visible){if(g.circleRadius)d.beginPath(),d.arc(g.position.x,g.position.y,g.circleRadius,0,2*Math.PI),d.closePath();else{d.beginPath(),d.moveTo(g.vertices[0].x,g.vertices[0].y);for(var h=1;h<g.vertices.length;h++)d.lineTo(g.vertices[h].x,g.vertices[h].y);d.closePath()}var i=g.position.x-.5*e.options.width,j=g.position.y-.2*e.options.height,k=Math.abs(i)+Math.abs(j);d.shadowColor="rgba(0,0,0,0.15)",d.shadowOffsetX=.05*i,d.shadowOffsetY=.05*j,d.shadowBlur=1+12*Math.min(1,k/1e3),d.fill(),d.shadowColor=null,d.shadowOffsetX=null,d.shadowOffsetY=null,d.shadowBlur=null}}},A.bodies=function(a,c,d){var e,f=d,g=a.render,h=g.options;for(e=0;e<c.length;e++){var i=c[e];if(i.render.visible)if(i.render.sprite&&i.render.sprite.texture&&!h.wireframes){var j=i.render.sprite,k=b(g,j.texture);h.showSleeping&&i.isSleeping&&(f.globalAlpha=.5),f.translate(i.position.x,i.position.y),f.rotate(i.angle),f.drawImage(k,k.width*-.5*j.xScale,k.height*-.5*j.yScale,k.width*j.xScale,k.height*j.yScale),f.rotate(-i.angle),f.translate(-i.position.x,-i.position.y),h.showSleeping&&i.isSleeping&&(f.globalAlpha=1)}else{if(i.circleRadius)f.beginPath(),f.arc(i.position.x,i.position.y,i.circleRadius,0,2*Math.PI);else{f.beginPath(),f.moveTo(i.vertices[0].x,i.vertices[0].y);for(var l=1;l<i.vertices.length;l++)f.lineTo(i.vertices[l].x,i.vertices[l].y);f.closePath()}h.wireframes?(f.lineWidth=1,f.strokeStyle="#bbb",h.showSleeping&&i.isSleeping&&(f.strokeStyle="rgba(255,255,255,0.2)"),f.stroke()):(f.fillStyle=h.showSleeping&&i.isSleeping?n.shadeColor(i.render.fillStyle,50):i.render.fillStyle,f.lineWidth=i.render.lineWidth,f.strokeStyle=i.render.strokeStyle,f.fill(),f.stroke())}}},A.bodyWireframes=function(a,b,c){var d,e,f=c;for(f.beginPath(),d=0;d<b.length;d++){var g=b[d];if(g.render.visible){for(f.moveTo(g.vertices[0].x,g.vertices[0].y),e=1;e<g.vertices.length;e++)f.lineTo(g.vertices[e].x,g.vertices[e].y);f.lineTo(g.vertices[0].x,g.vertices[0].y)}}f.lineWidth=1,f.strokeStyle="#bbb",f.stroke()},A.bodyBounds=function(a,b,c){var d=c,e=a.render,f=e.options;d.beginPath();for(var g=0;g<b.length;g++){var h=b[g];h.render.visible&&d.rect(h.bounds.min.x,h.bounds.min.y,h.bounds.max.x-h.bounds.min.x,h.bounds.max.y-h.bounds.min.y)}d.strokeStyle=f.wireframes?"rgba(255,255,255,0.08)":"rgba(0,0,0,0.1)",d.lineWidth=1,d.stroke()},A.bodyAxes=function(a,b,c){var d,e,f=c,g=a.render,h=g.options;for(f.beginPath(),d=0;d<b.length;d++){var i=b[d];if(i.render.visible)if(h.showAxes)for(e=0;e<i.axes.length;e++){var j=i.axes[e];f.moveTo(i.position.x,i.position.y),f.lineTo(i.position.x+20*j.x,i.position.y+20*j.y)}else f.moveTo(i.position.x,i.position.y),f.lineTo((i.vertices[0].x+i.vertices[i.vertices.length-1].x)/2,(i.vertices[0].y+i.vertices[i.vertices.length-1].y)/2)}f.strokeStyle=h.wireframes?"indianred":"rgba(0,0,0,0.3)",f.lineWidth=1,f.stroke()},A.bodyPositions=function(a,b,c){var d,e,f=c,g=a.render,h=g.options;for(f.beginPath(),e=0;e<b.length;e++)d=b[e],d.render.visible&&(f.arc(d.position.x,d.position.y,3,0,2*Math.PI,!1),f.closePath());for(f.fillStyle=h.wireframes?"indianred":"rgba(0,0,0,0.5)",f.fill(),f.beginPath(),e=0;e<b.length;e++)d=b[e],d.render.visible&&(f.arc(d.positionPrev.x,d.positionPrev.y,2,0,2*Math.PI,!1),f.closePath());f.fillStyle="rgba(255,165,0,0.8)",f.fill()},A.bodyVelocity=function(a,b,c){{var d=c,e=a.render;e.options}d.beginPath();for(var f=0;f<b.length;f++){var g=b[f];g.render.visible&&(d.moveTo(g.position.x,g.position.y),d.lineTo(g.position.x+2*(g.position.x-g.positionPrev.x),g.position.y+2*(g.position.y-g.positionPrev.y)))}d.lineWidth=3,d.strokeStyle="cornflowerblue",d.stroke()},A.bodyIds=function(a,b,c){for(var d=c,e=0;e<b.length;e++){var f=b[e];f.render.visible&&(d.font="12px Arial",d.fillStyle="rgba(255,255,255,0.5)",d.fillText(f.id,f.position.x+10,f.position.y-10))}},A.collisions=function(a,b,c){var d,e,f,g,h=c,i=a.render.options;for(h.beginPath(),f=0;f<b.length;f++)for(d=b[f],e=d.collision,g=0;g<d.activeContacts.length;g++){var j=d.activeContacts[g],k=j.vertex;h.rect(k.x-1.5,k.y-1.5,3.5,3.5)}for(h.fillStyle=i.wireframes?"rgba(255,255,255,0.7)":"orange",h.fill(),h.beginPath(),f=0;f<b.length;f++)if(d=b[f],e=d.collision,d.activeContacts.length>0){var l=d.activeContacts[0].vertex.x,m=d.activeContacts[0].vertex.y;2===d.activeContacts.length&&(l=(d.activeContacts[0].vertex.x+d.activeContacts[1].vertex.x)/2,m=(d.activeContacts[0].vertex.y+d.activeContacts[1].vertex.y)/2),h.moveTo(l-8*e.normal.x,m-8*e.normal.y),h.lineTo(l,m)}h.strokeStyle=i.wireframes?"rgba(255,165,0,0.7)":"orange",h.lineWidth=1,h.stroke()},A.grid=function(a,b,c){var d=c,e=a.render.options;d.strokeStyle=e.wireframes?"rgba(255,180,0,0.1)":"rgba(255,180,0,0.5)",d.beginPath();for(var f=n.keys(b.buckets),g=0;g<f.length;g++){var h=f[g];if(!(b.buckets[h].length<2)){var i=h.split(",");d.rect(.5+parseInt(i[0],10)*b.bucketWidth,.5+parseInt(i[1],10)*b.bucketHeight,b.bucketWidth,b.bucketHeight)}}d.lineWidth=1,d.stroke()};var a=function(a,b){var c=document.createElement("canvas");return c.width=a,c.height=b,c.oncontextmenu=function(){return!1},c.onselectstart=function(){return!1},c},b=function(a,b){var c=a.textures[b];return c?c:(c=a.textures[b]=new Image,c.src=b,c)}}();var B={};!function(){B.create=function(a){var b={controller:B,element:null,canvas:null,options:{width:800,height:600,background:"#fafafa",wireframeBackground:"#222",enabled:!0,wireframes:!0,showSleeping:!0,showDebug:!1,showBroadphase:!1,showBounds:!1,showVelocity:!1,showCollisions:!1,showAxes:!1,showPositions:!1,showAngleIndicator:!1,showIds:!1,showShadows:!1}},c=n.extend(b,a);return c.context=new PIXI.WebGLRenderer(800,600,c.canvas,!1,!0),c.canvas=c.context.view,c.stage=new PIXI.Stage,c.textures={},c.sprites={},c.primitives={},c.spriteBatch=new PIXI.SpriteBatch,c.stage.addChild(c.spriteBatch),n.isElement(c.element)?c.element.appendChild(c.canvas):n.log('No "render.element" passed, "render.canvas" was not inserted into document.',"warn"),c.canvas.oncontextmenu=function(){return!1},c.canvas.onselectstart=function(){return!1},c},B.clear=function(a){for(var b=a.stage,c=a.spriteBatch;b.children[0];)b.removeChild(b.children[0]);for(;c.children[0];)c.removeChild(c.children[0]);var d=a.sprites["bg-0"];a.textures={},a.sprites={},a.primitives={},a.sprites["bg-0"]=d,d&&c.addChildAt(d,0),a.stage.addChild(a.spriteBatch),a.currentBackground=null},B.setBackground=function(a,b){if(a.currentBackground!==b){var c=b.indexOf&&-1!==b.indexOf("#"),e=a.sprites["bg-0"];if(c){var f=n.colorToNumber(b);a.stage.setBackgroundColor(f),e&&a.spriteBatch.removeChild(e)}else if(!e){var g=d(a,b);e=a.sprites["bg-0"]=new PIXI.Sprite(g),e.position.x=0,e.position.y=0,a.spriteBatch.addChildAt(e,0)}a.currentBackground=b}},B.world=function(a){var b,d=a.render,e=a.world,f=d.context,g=d.stage,h=d.options,i=c.allBodies(e),j=c.allConstraints(e);for(h.wireframes?B.setBackground(d,h.wireframeBackground):B.setBackground(d,h.background),b=0;b<i.length;b++)B.body(a,i[b]);for(b=0;b<j.length;b++)B.constraint(a,j[b]);f.render(g)},B.constraint=function(a,b){var c=a.render,d=b.bodyA,e=b.bodyB,f=b.pointA,g=b.pointB,h=c.stage,i=b.render,j="c-"+b.id,k=c.primitives[j];return k||(k=c.primitives[j]=new PIXI.Graphics),i.visible&&b.pointA&&b.pointB?(-1===h.children.indexOf(k)&&h.addChild(k),k.clear(),k.beginFill(0,0),k.lineStyle(i.lineWidth,n.colorToNumber(i.strokeStyle),1),d?k.moveTo(d.position.x+f.x,d.position.y+f.y):k.moveTo(f.x,f.y),e?k.lineTo(e.position.x+g.x,e.position.y+g.y):k.lineTo(g.x,g.y),void k.endFill()):void k.clear()},B.body=function(c,d){var e=c.render,f=d.render;if(f.visible)if(f.sprite&&f.sprite.texture){var g="b-"+d.id,h=e.sprites[g],i=e.spriteBatch;h||(h=e.sprites[g]=a(e,d)),-1===i.children.indexOf(h)&&i.addChild(h),h.position.x=d.position.x,h.position.y=d.position.y,h.rotation=d.angle}else{var j="b-"+d.id,k=e.primitives[j],l=e.stage;k||(k=e.primitives[j]=b(e,d),k.initialAngle=d.angle),-1===l.children.indexOf(k)&&l.addChild(k),k.position.x=d.position.x,k.position.y=d.position.y,k.rotation=d.angle-k.initialAngle}};var a=function(a,b){var c=b.render,e=c.sprite.texture,f=d(a,e),g=new PIXI.Sprite(f);return g.anchor.x=.5,g.anchor.y=.5,g},b=function(a,b){var c=b.render,d=a.options,e=new PIXI.Graphics;e.clear(),d.wireframes?(e.beginFill(0,0),e.lineStyle(1,n.colorToNumber("#bbb"),1)):(e.beginFill(n.colorToNumber(c.fillStyle),1),e.lineStyle(b.render.lineWidth,n.colorToNumber(c.strokeStyle),1)),e.moveTo(b.vertices[0].x-b.position.x,b.vertices[0].y-b.position.y);for(var f=1;f<b.vertices.length;f++)e.lineTo(b.vertices[f].x-b.position.x,b.vertices[f].y-b.position.y);return e.lineTo(b.vertices[0].x-b.position.x,b.vertices[0].y-b.position.y),e.endFill(),(d.showAngleIndicator||d.showAxes)&&(e.beginFill(0,0),d.wireframes?e.lineStyle(1,n.colorToNumber("#CD5C5C"),1):e.lineStyle(1,n.colorToNumber(b.render.strokeStyle)),e.moveTo(0,0),e.lineTo((b.vertices[0].x+b.vertices[b.vertices.length-1].x)/2-b.position.x,(b.vertices[0].y+b.vertices[b.vertices.length-1].y)/2-b.position.y),e.endFill()),e},d=function(a,b){var c=a.textures[b];return c||(c=a.textures[b]=PIXI.Texture.fromImage(b)),c}}(),d.add=c.add,d.remove=c.remove,d.addComposite=c.addComposite,d.addBody=c.addBody,d.addConstraint=c.addConstraint,d.clear=c.clear,a.Body=b,a.Composite=c,a.World=d,a.Contact=e,a.Detector=f,a.Grid=g,a.Pairs=i,a.Pair=h,a.Resolver=j,a.SAT=k,a.Constraint=l,a.MouseConstraint=m,a.Common=n,a.Engine=o,a.Metrics=q,a.Mouse=r,a.Sleeping=s,a.Bodies=t,a.Composites=u,a.Axes=v,a.Bounds=w,a.Vector=x,a.Vertices=y,a.Gui=z,a.Render=A,a.RenderPixi=B,a.Events=p,"undefined"!=typeof exports&&("undefined"!=typeof module&&module.exports&&(exports=module.exports=a),exports.Matter=a),"function"==typeof define&&define.amd&&define("Matter",[],function(){return a}),"object"==typeof window&&"object"==typeof window.document&&(window.Matter=a)}();