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#CANT USE GOOGLE EARTH ON CHROME FOR MAC WEBGL HOW TO#
#CANT USE GOOGLE EARTH ON CHROME FOR MAC WEBGL CODE#

#CANT USE GOOGLE EARTH ON CHROME FOR MAC WEBGL CODE#

UPDATE: Starting with Cesium 1.6, setting the heading, pitch, and roll in the above code can be simplified to:įor( var i = 0, n = billboards. Once again I have to thank Dan Bagnell, without his help I would still be driving a vehicle either looking up at the stars or looking everywhere but the vehicle. camera.tilt = (Math.PI/2)-cameraTilt // this clamped the value var angle = (( Math.PI/ 2)-cameraTilt) - camera.tilt Ĭamera.look(camera.right, angle) // this is a workaround for the camera.tilt = X Var yDir = (bodyModel.modelMatrix, _X, new Cesium.Cartesian3()) Ĭ(camera.inverseTransform, yDir, yDir) Ĭ(yDir, yDir) // yDir's magnitude might not be exactly 1 after the rotationĬtTransform() Var position = (lng, lat, cameraAlt, ellipsoid) He also showed me that you can access each node of the model by its name and change its matrix, this allows you to change the node's position, orientation and even its scale: This worked pretty well in GE, but then trying to accomplish the same in Cesium proved to be difficult (you can check the forum post to see a lot of code snippets of the mess I was in).īut then Dan Bagnell came to the rescue, and pointed me to having my model as a hierarchy of meshes, which takes care of positioning the components correctly and you only have to worry about the orientation. So let's say you have the main body and other bodies attached to it, I was doing some fancy quaternion construction given the Euler angles of the main body, multiplying that with the quarternions for each axis of the components, finding the resulting Euler angles and setting their position and orientation. But if you have multiple 3D models, where some are positioned with another as a reference but with custom behaviors, for example the flaps of a plane, this requires some math to get things in the right place, which isn't as straightforward in either GE or Cesium. In GE, loading a 3D model is pretty straightforward and the same applies to Cesium. This proved to be a big challenge that I faced during this migration.

#CANT USE GOOGLE EARTH ON CHROME FOR MAC WEBGL HOW TO#

So let's go over each of those parts, and hopefully these tips/solutions can help people coming from the GE world get a better feel of how to do it in Cesium.

Finally youbeQ is plugin free, is faster and the overall user experience improved. youbeQ is running stable using Cesium since the beginning of this month (October 2014). Their team was really fast in answering questions on the forum, which allowed me to reach a working version in a couple of weeks. Thanks to Sandcastle and the huge help of different members from the Cesium team, I was able to find solutions to almost every part.

Create Placemarks and manipulate them in real-time.

Create GroundOverlays and manipulate them in real-time.

Load 3D models and manipulate them in real-time.

So in order to migrate youbeQ, I started by thinking of all the different parts I had and needed to find a way to implement in Cesium: Another small detail was the order of the when passing it into functions in Cesium, here it is. Also, manipulating matrices for setting the position, orientation and scale of the different elements was something that took awhile to get used to. The first thing I had to get used to, was working with Cartesian values instead of degrees (latitude, longitude), thankfully there is always a fromDegrees function to help you. This marked the beginning of the challenge of changing youbeQ from the Google Earth Plugin to Cesium. But one time, I chanced upon the cool post about 3D models, and after losing any hope of the new 3D layer in Google Maps being available any time soon I decided (a month ago) it was time to give Cesium a try. Unfortunately there was nothing available at the time.įrom time to time we would go for a look around the web to see how the virtual globes were doing, and I checked Cesium a couple of times but it lacked the ability to add and manipulate 3D models, something crucial for youbeQ. Since our users use mostly Google Chrome this presented a big big problem and we needed an alternative that could give the same or similar functionality as the GE Plugin. The year of 2013 came, bringing the hope of a bright new future with the showcase of the new Google Maps with its awesome 3D mode in WebGL, but it also marked the beginning of the end for the NPAPI in Google Chrome, which the Google Earth Plugin uses.