/**
* matter.min.js 0.8.0-edge 2014-12-02
* http://brm.io/matter-js/
* License: MIT
*/

!function(){var a={},b={};!function(){b._inertiaScale=4;var a=1,c=-1;b.create=function(a){var b={id:o.nextId(),type:"body",label:"Body",angle:0,vertices:A.fromPath("L 0 0 L 40 0 L 40 40 L 0 40"),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,collisionFilter:{category:1,mask:4294967295,group:0},slop:.05,timeScale:1,render:{visible:!0,sprite:{xScale:1,yScale:1},lineWidth:1.5}},c=o.extend(b,a);return d(c,a),c},b.nextGroup=function(b){return b?c--:a++};var d=function(a,c){a.bounds=a.bounds||y.create(a.vertices),a.positionPrev=a.positionPrev||z.clone(a.position),a.anglePrev=a.anglePrev||a.angle,b.setVertices(a,a.vertices),b.setStatic(a,a.isStatic),u.set(a,a.isSleeping),A.rotate(a.vertices,a.angle,a.position),x.rotate(a.axes,a.angle),y.update(a.bounds,a.vertices,a.velocity),a.axes=c.axes||a.axes,a.area=c.area||a.area,b.setMass(a,c.mass||a.mass),b.setInertia(a,c.inertia||a.inertia);var d=a.isStatic?"#eeeeee":o.choose(["#556270","#4ECDC4","#C7F464","#FF6B6B","#C44D58"]),e=o.shadeColor(d,-20);a.render.fillStyle=a.render.fillStyle||d,a.render.strokeStyle=a.render.strokeStyle||e};b.setStatic=function(a,b){a.isStatic=b,b&&(a.restitution=0,a.friction=1,a.mass=a.inertia=a.density=1/0,a.inverseMass=a.inverseInertia=0,a.positionPrev.x=a.position.x,a.positionPrev.y=a.position.y,a.anglePrev=a.angle,a.angularVelocity=0,a.speed=0,a.angularSpeed=0,a.motion=0)},b.setMass=function(a,b){a.mass=b,a.inverseMass=1/a.mass,a.density=a.mass/a.area},b.setDensity=function(a,c){b.setMass(a,c*a.area),a.density=c},b.setInertia=function(a,b){a.inertia=b,a.inverseInertia=1/a.inertia},b.setVertices=function(a,c){a.vertices=c[0].body===a?c:A.create(c,a),a.axes=x.fromVertices(a.vertices),a.area=A.area(a.vertices),b.setMass(a,a.density*a.area);var d=A.centre(a.vertices);A.translate(a.vertices,d,-1),b.setInertia(a,b._inertiaScale*A.inertia(a.vertices,a.mass)),A.translate(a.vertices,a.position),y.update(a.bounds,a.vertices,a.velocity)},b.setPosition=function(a,b){var c=z.sub(b,a.position);a.position.x=b.x,a.position.y=b.y,a.positionPrev.x+=c.x,a.positionPrev.y+=c.y,A.translate(a.vertices,c),y.update(a.bounds,a.vertices,a.velocity)},b.setAngle=function(a,b){var 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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,f){for(var g=0;g<a.length;g++){var h=a[g];h.isStatic||h.isSleeping||h.bounds.max.x<f.min.x||h.bounds.min.x>f.max.x||h.bounds.max.y<f.min.y||h.bounds.min.y>f.max.y||b.update(h,c,d,e)}},b.update=function(a,b,c,d){var e=Math.pow(b*c*a.timeScale,2),f=1-a.frictionAir*c*a.timeScale,g=a.position.x-a.positionPrev.x,h=a.position.y-a.positionPrev.y;a.velocity.x=g*f*d+a.force.x/a.mass*e,a.velocity.y=h*f*d+a.force.y/a.mass*e,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)*f*d+a.torque/a.inertia*e,a.anglePrev=a.angle,a.angle+=a.angularVelocity,a.speed=z.magnitude(a.velocity),a.angularSpeed=Math.abs(a.angularVelocity),A.translate(a.vertices,a.velocity),0!==a.angularVelocity&&(A.rotate(a.vertices,a.angularVelocity,a.position),x.rotate(a.axes,a.angularVelocity)),y.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}}();var c={};!function(){c.create=function(a){return o.extend({id:o.nextId(),type:"composite",parent:null,isModified:!1,bodies:[],constraints:[],composites:[],label:"Composite"},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){var d=[].concat(b);q.trigger(a,"beforeAdd",{object:b});for(var 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 q.trigger(a,"afterAdd",{object:b}),a},c.remove=function(a,b,d){var e=[].concat(b);q.trigger(a,"beforeRemove",{object:b});for(var 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 q.trigger(a,"afterRemove",{object:b}),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=o.indexOf(a.composites,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=o.indexOf(a.bodies,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=o.indexOf(a.constraints,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},c.get=function(a,b,d){var e,f;switch(d){case"body":e=c.allBodies(a);break;case"constraint":e=c.allConstraints(a);break;case"composite":e=c.allComposites(a).concat(a)}return e?(f=e.filter(function(a){return a.id.toString()===b.toString()}),0===f.length?null:f[0]):null},c.move=function(a,b,d){return c.remove(a,b),c.add(d,b),a},c.rebase=function(a){for(var b=c.allBodies(a).concat(c.allConstraints(a)).concat(c.allComposites(a)),d=0;d<b.length;d++)b[d].id=o.nextId();return c.setModified(a,!0,!0,!1),a},c.translate=function(a,d,e){for(var f=e?c.allBodies(a):a.bodies,g=0;g<f.length;g++)b.translate(f[g],d);return c.setModified(a,!0,!0,!1),a},c.rotate=function(a,d,e,f){for(var g=Math.cos(d),h=Math.sin(d),i=f?c.allBodies(a):a.bodies,j=0;j<i.length;j++){var k=i[j],l=k.position.x-e.x,m=k.position.y-e.y;b.setPosition(k,{x:e.x+(l*g-m*h),y:e.y+(l*h+m*g)}),b.rotate(k,d)}return c.setModified(a,!0,!0,!1),a},c.scale=function(a,d,e,f,g){for(var h=g?c.allBodies(a):a.bodies,i=0;i<h.length;i++){var j=h[i],k=j.position.x-f.x,l=j.position.y-f.y;b.setPosition(j,{x:f.x+k*d,y:f.y+l*e}),b.scale(j,d,e)}return c.setModified(a,!0,!0,!1),a}}();var d={};!function(){d.create=function(a){var b=c.create(),d={label:"World",gravity:{x:0,y:1},bounds:{min:{x:0,y:0},max:{x:800,y:600}}};return o.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,g=0;g<a.length;g++){var i=a[g][0],j=a[g][1];if((!i.isStatic&&!i.isSleeping||!j.isStatic&&!j.isSleeping)&&f.canCollide(i.collisionFilter,j.collisionFilter)&&(d.midphaseTests+=1,y.overlaps(i.bounds,j.bounds))){var k,m=h.id(i,j),n=e[m];k=n&&n.isActive?n.collision:null;var o=l.collides(i,j,k);d.narrowphaseTests+=1,o.reused&&(d.narrowReuseCount+=1),o.collided&&(c.push(o),d.narrowDetections+=1)}}return c},f.bruteForce=function(a,b){for(var c=[],d=b.metrics,e=b.pairs.table,g=0;g<a.length;g++)for(var i=g+1;i<a.length;i++){var j=a[g],k=a[i];if((!j.isStatic&&!j.isSleeping||!k.isStatic&&!k.isSleeping)&&f.canCollide(j.collisionFilter,k.collisionFilter)&&(d.midphaseTests+=1,y.overlaps(j.bounds,k.bounds))){var m,n=h.id(j,k),o=e[n];m=o&&o.isActive?o.collision:null;var p=l.collides(j,k,m);d.narrowphaseTests+=1,p.reused&&(d.narrowReuseCount+=1),p.collided&&(c.push(p),d.narrowDetections+=1)}}return c},f.canCollide=function(a,b){return a.group===b.group&&0!==a.group?a.group>0:0!==(a.mask&b.category)&&0!==(b.mask&a.category)}}();var g={};!function(){g.create=function(a){var b={controller:g,detector:f.collisions,buckets:{},pairs:{},pairsList:[],bucketWidth:48,bucketHeight:48};return o.extend(b,a)},g.update=function(c,f,g,h){var l,m,n,o,p,q=g.world,r=c.buckets,s=g.metrics,t=!1;for(s.broadphaseTests=0,l=0;l<f.length;l++){var u=f[l];if((!u.isSleeping||h)&&!(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||h){s.broadphaseTests+=1,(!u.region||h)&&(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&&j(c,o,u),(u.region===v||x&&!y||h)&&(o||(o=e(r,p)),i(c,o,u))}u.region=v,t=!0}}}t&&(c.pairsList=k(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},i=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)},j=function(a,b,c){b.splice(o.indexOf(b,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)}},k=function(a){var b,c,d=[];b=o.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 o.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===o.indexOf(n,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(){j.ray=function(a,b,c,d){d=d||Number.MIN_VALUE;for(var e=z.angle(b,c),f=z.magnitude(z.sub(b,c)),g=.5*(c.x+b.x),h=.5*(c.y+b.y),i=v.rectangle(g,h,f,d,{angle:e}),j=[],k=0;k<a.length;k++){var m=a[k];if(y.overlaps(m.bounds,i.bounds)){var n=l.collides(m,i);n.collided&&(n.body=n.bodyA=n.bodyB=m,j.push(n))}}return j},j.region=function(a,b,c){for(var d=[],e=0;e<a.length;e++){var f=a[e],g=y.overlaps(f.bounds,b);(g&&!c||!g&&c)&&d.push(f)}return d}}();var k={};!function(){var a=4,b=.2,c=.6;k.solvePosition=function(a,c){var d,e,f,g,h,i,j,k,l;for(d=0;d<a.length;d++)e=a[d],e.isActive&&(f=e.collision,g=f.bodyA,h=f.bodyB,i=f.supports[0],j=f.supportCorrected,k=f.normal,l=z.sub(z.add(h.positionImpulse,i),z.add(g.positionImpulse,j)),e.separation=z.dot(k,l));for(d=0;d<a.length;d++)e=a[d],e.isActive&&(f=e.collision,g=f.bodyA,h=f.bodyB,k=f.normal,positionImpulse=(e.separation*b-e.slop)*c,(g.isStatic||h.isStatic)&&(positionImpulse*=2),g.isStatic||g.isSleeping||(g.positionImpulse.x+=k.x*positionImpulse,g.positionImpulse.y+=k.y*positionImpulse),h.isStatic||h.isSleeping||(h.positionImpulse.x-=k.x*positionImpulse,h.positionImpulse.y-=k.y*positionImpulse))},k.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,A.translate(d.vertices,d.positionImpulse),y.update(d.bounds,d.vertices,d.velocity),d.positionImpulse.x*=c,d.positionImpulse.y*=c)}},k.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=z.sub(l,g.position),g.positionPrev.x+=p.x*g.inverseMass,g.positionPrev.y+=p.y*g.inverseMass,g.anglePrev+=z.cross(o,p)*g.inverseInertia),h.isStatic||h.isSleeping||(o=z.sub(l,h.position),h.positionPrev.x-=p.x*h.inverseMass,h.positionPrev.y-=p.y*h.inverseMass,h.anglePrev-=z.cross(o,p)*h.inverseInertia)},k.solveVelocity=function(b,c){for(var d={},e=c*c,f=0;f<b.length;f++){var g=b[f];if(g.isActive){var h=g.collision,i=h.bodyA,j=h.bodyB,k=h.normal,l=h.tangent,m=g.activeContacts,n=1/m.length;i.velocity.x=i.position.x-i.positionPrev.x,i.velocity.y=i.position.y-i.positionPrev.y,j.velocity.x=j.position.x-j.positionPrev.x,j.velocity.y=j.position.y-j.positionPrev.y,i.angularVelocity=i.angle-i.anglePrev,j.angularVelocity=j.angle-j.anglePrev;for(var p=0;p<m.length;p++){var q=m[p],r=q.vertex,s=z.sub(r,i.position),t=z.sub(r,j.position),u=z.add(i.velocity,z.mult(z.perp(s),i.angularVelocity)),v=z.add(j.velocity,z.mult(z.perp(t),j.angularVelocity)),w=z.sub(u,v),x=z.dot(k,w),y=z.dot(l,w),A=Math.abs(y),B=o.sign(y),C=(1+g.restitution)*x,D=o.clamp(g.separation+x,0,1),E=y;A>D*g.friction*e&&(E=D*g.friction*e*B);var F=z.cross(s,k),G=z.cross(t,k),H=n/(g.inverseMass+i.inverseInertia*F*F+j.inverseInertia*G*G);if(C*=H,E*=H,0>x&&x*x>a*e)q.normalImpulse=0,q.tangentImpulse=0;else{var I=q.normalImpulse;q.normalImpulse=Math.min(q.normalImpulse+C,0),C=q.normalImpulse-I;var 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q,r,s,t,v,w,x,y;e&&!e.isStatic?(s={x:i.x-e.position.x+p.x,y:i.y-e.position.y+p.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=z.add(e.velocity,z.mult(z.perp(s),e.angularVelocity)),v=z.dot(s,n),x=e.inverseMass+e.inverseInertia*v*v):(q={x:0,y:0},x=e?e.inverseMass:0),f&&!f.isStatic?(t={x:j.x-f.position.x-p.x,y:j.y-f.position.y-p.y},f.velocity.x=f.position.x-f.positionPrev.x,f.velocity.y=f.position.y-f.positionPrev.y,f.angularVelocity=f.angle-f.anglePrev,r=z.add(f.velocity,z.mult(z.perp(t),f.angularVelocity)),w=z.dot(t,n),y=f.inverseMass+f.inverseInertia*w*w):(r={x:0,y:0},y=f?f.inverseMass:0);var A=z.sub(r,q),B=z.dot(n,A)/(x+y);B>0&&(B=0);var C,D={x:n.x*B,y:n.y*B};e&&!e.isStatic&&(C=z.cross(s,D)*e.inverseInertia*(1-c.angularStiffness),u.set(e,!1),C=o.clamp(C,-.01,.01),e.constraintImpulse.x-=p.x,e.constraintImpulse.y-=p.y,e.constraintImpulse.angle+=C,e.position.x-=p.x,e.position.y-=p.y,e.angle+=C),f&&!f.isStatic&&(C=z.cross(t,D)*f.inverseInertia*(1-c.angularStiffness),u.set(f,!1),C=o.clamp(C,-.01,.01),f.constraintImpulse.x+=p.x,f.constraintImpulse.y+=p.y,f.constraintImpulse.angle-=C,f.position.x+=p.x,f.position.y+=p.y,f.angle-=C)}}},m.postSolveAll=function(a){for(var b=0;b<a.length;b++){var c=a[b],d=c.constraintImpulse;A.translate(c.vertices,d),0!==d.angle&&(A.rotate(c.vertices,d.angle,c.position),x.rotate(c.axes,d.angle),d.angle=0),y.update(c.bounds,c.vertices),d.x=0,d.y=0}}}();var n={};!function(){n.create=function(b,d){var e=d&&d.mouse||s.create(b.render.canvas),f=m.create({label:"Mouse 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b=a.mouse,c=b.sourceEvents;c.mousemove&&q.trigger(a,"mousemove",{mouse:b}),c.mousedown&&q.trigger(a,"mousedown",{mouse:b}),c.mouseup&&q.trigger(a,"mouseup",{mouse:b}),s.clearSourceEvents(b)}}();var o={};!function(){o._nextId=0,o._seed=0,o.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]||{},o.extend(a[h],e,g[h])):a[h]=g[h]}return a},o.clone=function(a,b){return o.extend({},b,a)},o.keys=function(a){if(Object.keys)return Object.keys(a);var b=[];for(var c in a)b.push(c);return b},o.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},o.shadeColor=function(a,b){var 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h.render=h.render.controller.create(h.render),h.world=d.create(h.world),h.pairs=i.create(),h.metrics=h.metrics||r.create(),h.broadphase=h.broadphase.controller.create(h.broadphase),h},p.update=function(a,d,e){e="undefined"!=typeof e?e:1;var f,g=a.world,h=a.timing,j=a.broadphase,l=[];h.timestamp+=d*h.timeScale,h.correction=e;var n={timestamp:a.timing.timestamp};q.trigger(a,"beforeUpdate",n);var o=c.allBodies(g),p=c.allConstraints(g);for(r.reset(a.metrics),a.enableSleeping&&u.update(o,h.timeScale),b.applyGravityAll(o,g.gravity),b.updateAll(o,d,h.timeScale,e,g.bounds),f=0;f<a.constraintIterations;f++)m.solveAll(p,h.timeScale);m.postSolveAll(o),j.controller?(g.isModified&&j.controller.clear(j),j.controller.update(j,o,a,g.isModified),l=j.pairsList):l=o;var s=j.detector(l,a),t=a.pairs,v=h.timestamp;for(i.update(t,s,v),i.removeOld(t,v),a.enableSleeping&&u.afterCollisions(t.list,h.timeScale),t.collisionStart.length>0&&q.trigger(a,"collisionStart",{pairs:t.collisionStart}),k.preSolveVelocity(t.list),f=0;f<a.velocityIterations;f++)k.solveVelocity(t.list,h.timeScale);for(f=0;f<a.positionIterations;f++)k.solvePosition(t.list,h.timeScale);return k.postSolvePosition(o),t.collisionActive.length>0&&q.trigger(a,"collisionActive",{pairs:t.collisionActive}),t.collisionEnd.length>0&&q.trigger(a,"collisionEnd",{pairs:t.collisionEnd}),r.update(a.metrics,a),b.resetForcesAll(o),g.isModified&&c.setModified(g,!1,!1,!0),q.trigger(a,"afterUpdate",n),a},p.render=function(a){var b={timestamp:a.timing.timestamp};q.trigger(a,"beforeRender",b),a.render.controller.world(a),q.trigger(a,"afterRender",b)},p.merge=function(a,b){if(o.extend(a,b),b.world){a.world=b.world,p.clear(a);for(var d=c.allBodies(a.world),e=0;e<d.length;e++){var 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r={};!function(){r.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}},r.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)},r.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 s={};!function(){s.create=function(b){var c={};return 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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()},B.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=o.keys(b.buckets),g=0;g<f.length;g++){var h=f[g];if(!(b.buckets[h].length<2)){var 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n=m.pointA;m.bodyA&&(n=m.pointB),b.beginPath(),b.arc(n.x,n.y,10,0,2*Math.PI),b.closePath(),b.stroke()}b.setLineDash([0]),b.translate(-.5,-.5)}null!==a.selectStart&&(b.translate(.5,.5),b.lineWidth=1,b.strokeStyle="rgba(255,165,0,0.6)",b.fillStyle="rgba(255,165,0,0.1)",c=a.selectBounds,b.beginPath(),b.rect(Math.floor(c.min.x),Math.floor(c.min.y),Math.floor(c.max.x-c.min.x),Math.floor(c.max.y-c.min.y)),b.closePath(),b.stroke(),b.fill(),b.translate(-.5,-.5)),g.hasBounds&&b.setTransform(1,0,0,1,0,0)};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 C={};!function(){C.create=function(a){var 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b,d=a.render,e=a.world,f=d.context,g=d.stage,h=d.container,i=d.options,j=c.allBodies(e),k=c.allConstraints(e),l=[];i.wireframes?C.setBackground(d,i.wireframeBackground):C.setBackground(d,i.background);var m=d.bounds.max.x-d.bounds.min.x,n=d.bounds.max.y-d.bounds.min.y,o=m/d.options.width,p=n/d.options.height;if(i.hasBounds){for(b=0;b<j.length;b++){var q=j[b];q.render.sprite.visible=y.overlaps(q.bounds,d.bounds)}for(b=0;b<k.length;b++){var r=k[b],s=r.bodyA,t=r.bodyB,u=r.pointA,v=r.pointB;s&&(u=z.add(s.position,r.pointA)),t&&(v=z.add(t.position,r.pointB)),u&&v&&(y.contains(d.bounds,u)||y.contains(d.bounds,v))&&l.push(r)}h.scale.set(1/o,1/p),h.position.set(-d.bounds.min.x*(1/o),-d.bounds.min.y*(1/p))}else l=k;for(b=0;b<j.length;b++)C.body(a,j[b]);for(b=0;b<l.length;b++)C.constraint(a,l[b]);f.render(g)},C.constraint=function(a,b){var c=a.render,d=b.bodyA,e=b.bodyB,f=b.pointA,g=b.pointB,h=c.container,i=b.render,j="c-"+b.id,k=c.primitives[j];return k||(k=c.primitives[j]=new 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