diff -r 000000000000 -r 6474c204b198 browser/devtools/tilt/test/browser_tilt_arcball.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/tilt/test/browser_tilt_arcball.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,496 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+function cloneUpdate(update) {
+  return {
+    rotation: quat4.create(update.rotation),
+    translation: vec3.create(update.translation)
+  };
+}
+
+function isExpectedUpdate(update1, update2) {
+  if (update1.length !== update2.length) {
+    return false;
+  }
+  for (let i = 0, len = update1.length; i < len; i++) {
+    if (!isApproxVec(update1[i].rotation, update2[i].rotation) ||
+        !isApproxVec(update1[i].translation, update2[i].translation)) {
+      info("isExpectedUpdate expected " + JSON.stringify(update1), ", got " +
+                                          JSON.stringify(update2) + " instead.");
+      return false;
+    }
+  }
+  return true;
+}
+
+function test() {
+  let arcball1 = new TiltVisualizer.Arcball(window, 123, 456);
+
+  is(arcball1.width, 123,
+    "The first arcball width wasn't set correctly.");
+  is(arcball1.height, 456,
+    "The first arcball height wasn't set correctly.");
+  is(arcball1.radius, 123,
+    "The first arcball radius wasn't implicitly set correctly.");
+
+
+  let arcball2 = new TiltVisualizer.Arcball(window, 987, 654);
+
+  is(arcball2.width, 987,
+    "The second arcball width wasn't set correctly.");
+  is(arcball2.height, 654,
+    "The second arcball height wasn't set correctly.");
+  is(arcball2.radius, 654,
+    "The second arcball radius wasn't implicitly set correctly.");
+
+
+  let arcball3 = new TiltVisualizer.Arcball(window, 512, 512);
+
+  let sphereVec = vec3.create();
+  arcball3._pointToSphere(123, 456, 256, 512, 512, sphereVec);
+
+  ok(isApproxVec(sphereVec, [-0.009765625, 0.390625, 0.9204980731010437]),
+    "The _pointToSphere() function didn't map the coordinates correctly.");
+
+  let stack1 = [];
+  let expect1 = [
+    { rotation: [
+      -0.08877250552177429, 0.0242881178855896,
+      -0.04222869873046875, -0.9948599338531494],
+      translation: [0, 0, 0] },
+    { rotation: [
+      -0.13086390495300293, 0.03413732722401619,
+      -0.06334304809570312, -0.9887855648994446],
+      translation: [0, 0, 0] },
+    { rotation: [
+      -0.15138940513134003, 0.03854173421859741,
+      -0.07390022277832031, -0.9849540591239929],
+      translation: [0, 0, 0] },
+    { rotation: [
+      -0.1615273654460907, 0.040619146078825,
+      -0.0791788101196289, -0.9828477501869202],
+      translation: [0, 0, 0] },
+    { rotation: [
+      -0.16656573116779327, 0.04162723943591118,
+      -0.0818181037902832, -0.9817478656768799],
+      translation: [0, 0, 0] },
+    { rotation: [
+      -0.16907735168933868, 0.042123712599277496,
+      -0.08313775062561035, -0.9811863303184509],
+      translation: [0, 0, 0] },
+    { rotation: [
+      -0.17033125460147858, 0.042370058596134186,
+      -0.08379757404327393, -0.9809026718139648],
+      translation: [0, 0, 0] },
+    { rotation: [
+      -0.17095772922039032, 0.04249274358153343,
+      -0.08412748575210571, -0.9807600975036621],
+      translation: [0, 0, 0] },
+    { rotation: [
+      -0.17127084732055664, 0.04255397245287895,
+      -0.0842924416065216, -0.9806886315345764],
+      translation: [0, 0, 0] },
+    { rotation: [
+      -0.171427384018898, 0.042584557086229324,
+      -0.08437491953372955, -0.9806528687477112],
+      translation: [0, 0, 0] }];
+
+  arcball3.mouseDown(10, 10, 1);
+  arcball3.mouseMove(10, 100);
+  for (let i1 = 0; i1 < 10; i1++) {
+    stack1.push(cloneUpdate(arcball3.update()));
+  }
+
+  ok(isExpectedUpdate(stack1, expect1),
+    "Mouse down & move events didn't create the expected transform. results.");
+
+  let stack2 = [];
+  let expect2 = [
+    { rotation: [
+      -0.1684110015630722, 0.04199237748980522,
+      -0.0827873945236206, -0.9813361167907715],
+      translation: [0, 0, 0] },
+    { rotation: [
+      -0.16936375200748444, 0.04218007251620293,
+      -0.08328840136528015, -0.9811217188835144],
+      translation: [0, 0, 0] },
+    { rotation: [
+      -0.17003019154071808, 0.04231100529432297,
+      -0.08363909274339676, -0.9809709787368774],
+      translation: [0, 0, 0] },
+    { rotation: [
+      -0.17049652338027954, 0.042402446269989014,
+      -0.0838845893740654, -0.9808651208877563],
+      translation: [0, 0, 0] },
+    { rotation: [
+      -0.17082282900810242, 0.042466338723897934,
+      -0.08405643701553345, -0.9807908535003662],
+      translation: [0, 0, 0] },
+    { rotation: [
+      -0.17105120420455933, 0.04251104220747948,
+      -0.08417671173810959, -0.9807388186454773],
+      translation: [0, 0, 0] },
+    { rotation: [
+      -0.17121103405952454, 0.04254228621721268,
+      -0.08426092565059662, -0.9807023406028748],
+      translation: [0, 0, 0] },
+    { rotation: [
+      -0.17132291197776794, 0.042564138770103455,
+      -0.08431987464427948, -0.9806767106056213],
+      translation: [0, 0, 0] },
+    { rotation: [
+      -0.1714012324810028, 0.04257945716381073,
+      -0.08436112850904465, -0.9806588888168335],
+      translation: [0, 0, 0] },
+    { rotation: [
+      -0.17145603895187378, 0.042590171098709106,
+      -0.08439001441001892, -0.9806463718414307],
+      translation: [0, 0, 0] }];
+
+  arcball3.mouseUp(100, 100);
+  for (let i2 = 0; i2 < 10; i2++) {
+    stack2.push(cloneUpdate(arcball3.update()));
+  }
+
+  ok(isExpectedUpdate(stack2, expect2),
+    "Mouse up events didn't create the expected transformation results.");
+
+  let stack3 = [];
+  let expect3 = [
+    { rotation: [
+      -0.17149439454078674, 0.04259764403104782,
+      -0.08441022783517838, -0.9806375503540039],
+      translation: [0, 0, -1] },
+    { rotation: [
+      -0.17152123153209686, 0.04260288551449776,
+      -0.08442437648773193, -0.980631411075592],
+      translation: [0, 0, -1.899999976158142] },
+    { rotation: [
+      -0.1715400665998459, 0.04260658100247383,
+      -0.08443428575992584, -0.9806271195411682],
+      translation: [0, 0, -2.7100000381469727] },
+    { rotation: [
+      -0.17155319452285767, 0.04260912910103798,
+      -0.08444121479988098, -0.9806240797042847],
+      translation: [0, 0, -3.439000129699707] },
+    { rotation: [
+      -0.17156240344047546, 0.042610932141542435,
+      -0.08444607257843018, -0.9806219935417175],
+      translation: [0, 0, -4.095099925994873] },
+    { rotation: [
+      -0.1715688556432724, 0.042612191289663315,
+      -0.08444946259260178, -0.9806205034255981],
+      translation: [0, 0, -4.685589790344238] },
+    { rotation: [
+      -0.17157337069511414, 0.04261308163404465,
+      -0.0844518393278122, -0.980619490146637],
+      translation: [0, 0, -5.217031002044678] },
+    { rotation: [
+      -0.17157652974128723, 0.0426136814057827,
+      -0.0844535157084465, -0.9806187748908997],
+      translation: [0, 0, -5.6953277587890625] },
+    { rotation: [
+      -0.17157875001430511, 0.04261413961648941,
+      -0.08445467799901962, -0.9806182980537415],
+      translation: [0, 0, -6.125794887542725] },
+    { rotation: [
+      -0.17158031463623047, 0.04261442646384239,
+      -0.08445550501346588, -0.980617880821228],
+      translation: [0, 0, -6.5132155418396] }];
+
+  arcball3.zoom(10);
+  for (let i3 = 0; i3 < 10; i3++) {
+    stack3.push(cloneUpdate(arcball3.update()));
+  }
+
+  ok(isExpectedUpdate(stack3, expect3),
+    "Mouse zoom events didn't create the expected transformation results.");
+
+  let stack4 = [];
+  let expect4 = [
+    { rotation: [
+      -0.17158135771751404, 0.04261462762951851,
+      -0.08445606380701065, -0.9806176424026489],
+      translation: [0, 0, -6.861894130706787] },
+    { rotation: [
+      -0.1715821474790573, 0.04261479899287224,
+      -0.08445646613836288, -0.9806175231933594],
+      translation: [0, 0, -7.1757049560546875] },
+    { rotation: [
+      -0.1715826541185379, 0.0426148846745491,
+      -0.08445674180984497, -0.980617344379425],
+      translation: [0, 0, -7.458134651184082] },
+    { rotation: [
+      -0.17158304154872894, 0.04261497035622597,
+      -0.08445693552494049, -0.9806172847747803],
+      translation: [0, 0, -7.7123212814331055] },
+    { rotation: [
+      -0.17158329486846924, 0.042615000158548355,
+      -0.08445708453655243, -0.9806172251701355],
+      translation: [0, 0, -7.941089153289795] },
+    { rotation: [
+      -0.17158347368240356, 0.04261505603790283,
+      -0.084457166492939, -0.9806172251701355],
+      translation: [0, 0, -8.146980285644531] },
+    { rotation: [
+      -0.1715836226940155, 0.04261508584022522,
+      -0.08445724099874496, -0.9806171655654907],
+      translation: [0, 0, -8.332282066345215] },
+    { rotation: [
+      -0.17158368229866028, 0.04261508584022522,
+      -0.08445728570222855, -0.980617105960846],
+      translation: [0, 0, -8.499053955078125] },
+    { rotation: [
+      -0.17158377170562744, 0.04261511191725731,
+      -0.08445732295513153, -0.980617105960846],
+      translation: [0, 0, -8.649148941040039] },
+    { rotation: [
+      -0.17158380150794983, 0.04261511191725731,
+      -0.08445733785629272, -0.980617105960846],
+      translation: [0, 0, -8.784234046936035] }];
+
+  arcball3.keyDown(arcball3.rotateKeys.left);
+  arcball3.keyDown(arcball3.rotateKeys.right);
+  arcball3.keyDown(arcball3.rotateKeys.up);
+  arcball3.keyDown(arcball3.rotateKeys.down);
+  arcball3.keyDown(arcball3.panKeys.left);
+  arcball3.keyDown(arcball3.panKeys.right);
+  arcball3.keyDown(arcball3.panKeys.up);
+  arcball3.keyDown(arcball3.panKeys.down);
+  for (let i4 = 0; i4 < 10; i4++) {
+    stack4.push(cloneUpdate(arcball3.update()));
+  }
+
+  ok(isExpectedUpdate(stack4, expect4),
+    "Key down events didn't create the expected transformation results.");
+
+  let stack5 = [];
+  let expect5 = [
+    { rotation: [
+      -0.1715838462114334, 0.04261511191725731,
+      -0.08445736765861511, -0.980617105960846],
+      translation: [0, 0, -8.905810356140137] },
+    { rotation: [
+      -0.1715838462114334, 0.04261511191725731,
+      -0.08445736765861511, -0.980617105960846],
+      translation: [0, 0, -9.015229225158691] },
+    { rotation: [
+      -0.1715838462114334, 0.04261511191725731,
+      -0.08445736765861511, -0.980617105960846],
+      translation: [0, 0, -9.113706588745117] },
+    { rotation: [
+      -0.1715838611125946, 0.04261511191725731,
+      -0.0844573825597763, -0.9806170463562012],
+      translation: [0, 0, -9.202336311340332] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, -9.282102584838867] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, -9.35389232635498] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, -9.418502807617188] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, -9.476652145385742] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, -9.528986930847168] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, -9.576087951660156] }];
+
+  arcball3.keyUp(arcball3.rotateKeys.left);
+  arcball3.keyUp(arcball3.rotateKeys.right);
+  arcball3.keyUp(arcball3.rotateKeys.up);
+  arcball3.keyUp(arcball3.rotateKeys.down);
+  arcball3.keyUp(arcball3.panKeys.left);
+  arcball3.keyUp(arcball3.panKeys.right);
+  arcball3.keyUp(arcball3.panKeys.up);
+  arcball3.keyUp(arcball3.panKeys.down);
+  for (let i5 = 0; i5 < 10; i5++) {
+    stack5.push(cloneUpdate(arcball3.update()));
+  }
+
+  ok(isExpectedUpdate(stack5, expect5),
+    "Key up events didn't create the expected transformation results.");
+
+  let stack6 = [];
+  let expect6 = [
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, -9.618478775024414] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, -6.156630992889404] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 0.4590320587158203] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 9.913128852844238] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 21.921815872192383] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 36.22963333129883] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 52.60667037963867] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 70.84600067138672] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 90.76139831542969] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 112.18525695800781] }];
+
+  arcball3.keyDown(arcball3.zoomKeys["in"][0]);
+  arcball3.keyDown(arcball3.zoomKeys["in"][1]);
+  arcball3.keyDown(arcball3.zoomKeys["in"][2]);
+  for (let i6 = 0; i6 < 10; i6++) {
+    stack6.push(cloneUpdate(arcball3.update()));
+  }
+  arcball3.keyUp(arcball3.zoomKeys["in"][0]);
+  arcball3.keyUp(arcball3.zoomKeys["in"][1]);
+  arcball3.keyUp(arcball3.zoomKeys["in"][2]);
+
+  ok(isExpectedUpdate(stack6, expect6),
+    "Key zoom in events didn't create the expected transformation results.");
+
+  let stack7 = [];
+  let expect7 = [
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 134.96673583984375] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 151.97006225585938] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 163.77305603027344] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 170.895751953125] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 173.80618286132812] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 172.92556762695312] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 168.6330108642578] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 161.26971435546875] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 151.1427459716797] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 138.52847290039062] }];
+
+  arcball3.keyDown(arcball3.zoomKeys["out"][0]);
+  arcball3.keyDown(arcball3.zoomKeys["out"][1]);
+  for (let i7 = 0; i7 < 10; i7++) {
+    stack7.push(cloneUpdate(arcball3.update()));
+  }
+  arcball3.keyUp(arcball3.zoomKeys["out"][0]);
+  arcball3.keyUp(arcball3.zoomKeys["out"][1]);
+
+  ok(isExpectedUpdate(stack7, expect7),
+    "Key zoom out events didn't create the expected transformation results.");
+
+  let stack8 = [];
+  let expect8 = [
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 123.67562866210938] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 111.30806732177734] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 100.17726135253906] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 90.15953826904297] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 81.14358520507812] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 73.02922821044922] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 65.72630310058594] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 59.15367126464844] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 53.238304138183594] },
+    { rotation: [
+      -0.17158392071723938, 0.0426151417195797,
+      -0.0844573974609375, -0.980617105960846],
+      translation: [0, 0, 47.91447448730469] }];
+
+  arcball3.keyDown(arcball3.zoomKeys["unzoom"]);
+  for (let i8 = 0; i8 < 10; i8++) {
+    stack8.push(cloneUpdate(arcball3.update()));
+  }
+  arcball3.keyUp(arcball3.zoomKeys["unzoom"]);
+
+  ok(isExpectedUpdate(stack8, expect8),
+    "Key zoom reset events didn't create the expected transformation results.");
+
+
+  arcball3.resize(123, 456);
+  is(arcball3.width, 123,
+    "The third arcball width wasn't updated correctly.");
+  is(arcball3.height, 456,
+    "The third arcball height wasn't updated correctly.");
+  is(arcball3.radius, 123,
+    "The third arcball radius wasn't implicitly updated correctly.");
+}