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

/**
* matter.min.js 0.5.0-edge 2014-03-30
* http://brm.io/matter-js/
* License: MIT
*/

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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 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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 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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 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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];
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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: 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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 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