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Networking Software. Trending from CNET. View your real-time physical position on moving Google Map. Google Maps Widget Free. Get directions and find anything with this Google Maps Widget. Google Maps for iPod Touch Free. Access Google Maps on your iPod Touch. SketchUp Make Free to try. Create 3D models and upload them to Google Earth. Google Maps Free. Map specific locations and get directions. Then you can select if you want audio or not, and what area of the screen you want to record.

Real time video? Not sure what you mean, there is one in step 2 showing my real time movement while doing the screen recording.

By Sebastian Morales instagram Follow. More by the author:. His work often exists in the confluence of sculpture, kinetics, the human body and code. His work can be seen at adorevolution. I am including the actual video I capture for you to get an idea of how I was moving. What is Remake you ask? Did you make this project? Share it with us! I Made It! JBJB 7 days ago on Step 4. Reply Upvote. Answer Upvote. Axel Mertes 2 years ago. DavidS 4 years ago. Such standards require the reviewer to consider the technical qualities and characteristics of the product alongside its commercial value for users, which may affect the product's ranking on the website.

There are several different versions of Google Earth, you can launch Earth directly in your Chrome browser without downloading any software to your computer. However, for the full power of this program, you will need to download Google Earth Pro. Once upon a time, the program carried a steep price tag.

But Google has been giving it away for free for the past few years. Google Earth Pro uses a 3D modeling system , that allows users to build to-scale models of landmarks and buildings. If you prefer to see the actual buildings, you can go to street-view or view the thousands of pictures that users uploaded. You can use layers to add or remove features such as roads, photos, parks, trails, 3D buildings and more.

What is convenient, is that the OpenSceneGraph format uses terms very close to OpenGL vocabulary, so we might not need to look at the viewer's code! This is cool, because if you were afraid by the 6k lines of Marmoset Viewer, you are not going to love the 60k lines of Sketchfab's one.

It occurs 17 times, so it must actually contain a concatenation of all the buffers of the scene. The suffix of the DrawElements sections specifies the bit depth of the indices in the index buffer. Let's consider for instance the first one:. To test this, we must find the point attributes used in this call. But there are 6 occurrences of VertexAttributeList. To determine the one to use, it must be in the same Geometry node, so likely the first occurrence after the DrawElementsUInt will work.

This will select the whole Geometry block, and you'll know where to look for the appropriate VertexAttributeList. There are items. Each item has 3 component. But what component? Integers, Floats? Encoded on 16 bit, or 32 bit? Since the word "stride" doesn't appear anywhere in the file and all attributes start at different offsets, we can conclude that Sketchfab viewer or OSG. JS, should I say uses the data layout that I called "A" above. In this case, the stride is the size of the item.

Regarding the component type, the mention to Int32Array suggest that they are 32 bit signed integers. This really doesn't look like a truck. As it turns out, I underestimated the "Encoding": "varint" line. This is an encoding used to represent series of integers in a more compact way than just concatenating them. Well, Marmoset vertex attributes were not compressed; here they are compressed twice! We can find details about varints here. So I made a little varint. Still not working.

I performed some basic checks with my varint decoder, and in particular when I decode the TexCoord attribute, the decoding process stops right before the offset at which the Vertex buffer starts, so this must be right.

I did not want to do that at first, but I ended up reading the viewer's source code. I found the varing decoding function line and it matches my implementation. I found bounding box correction, I read the vertex shader. Decoding the index buffer seems complicated as well. The index buffer includes a header, and my attempts to get something out of it were unsuccessful. So, shall we give up? No, I think it is time to step back a bit.

We focused on trying to decode the data as it comes from the server, when it first reaches the client's computer. But instead of mimicking the data decoding process performed by the viewer, couldn't we let it do its job and extract the data after this is done? Intercepting the data between the server and the viewer was convenient, because the network monitor gives us direct access to all the resources.

But once in the memory of the JavaScript VM, it is not so easy to to extract it, even with the Memory Inspector provided by the browser's tools. Furthermore, some of the data handling is done in the vertex shader, so on the GPU.

This will hence never be accessible from the browser. This is where RenderDoc comes in. Think of it as the browser's developer tool, but for monitoring the GPU. RenderDoc records all the calls to the graphic API and their arguments, so that it is able to fully replay it and inspect it step by step. NB RenderDoc is not intended to be used as a hacking tool, and is not supported for that. It is a GPU debugger, but as a side effect of being a good debugger, it gives us access to the data we need.

Before trying more complicated stuff, it is good practice to start with a simple example. I will use for this an OpenGL 4. Its render function is very minimal:. We build this, then launch it with RenderDoc. The application will run with an overlay with information about the graphical API in use OpenGL, here and the frame number.

As it says, press F12 to capture a frame. In the RenderDoc window, the capture appears, and you can double click to open it. You will then see the list of rendering "events" in the Event Browser window. We recognize our calls to glClear and glDrawArrays. The buffer swap is done in the main loop, by glfwSwapBuffers. And what about the glUseProgram for instance? For some reason, only calls that affect the framebuffer are displayed here, but you can see the other calls when selecting a line in the Event Browser.

The other key element of RenderDoc is the Pipeline State panel. It describes the state of the GPU's rendering pipeline during the draw call. The first step, VTX, describe the draw call input, so the vertex attributes, and the topology. Exactly what we were looking for!

In this example, there are two attributes, vPosition and vColor. There is no index buffer, because glDrawArrays is not an indexed draw call. It assumes that the index buffer is [0, 1, 2, The right arrow in the vertex attributes array leads us to the Mesh Output panel, and there is again good news here.

This panel shows all the values of the input vertex attributes, but also the output of the vertex shader! And we can easily save them to disc. We now know how RenderDoc works, and we have an example to experiment with set up.

But let's head back to our original problem. We need to capture frames in the browser. Logically, we try to launch the browser from RenderDoc, as we did with our little test program. Unfortunately, this does not work, neither will it work with other browsers.

I am not sure exactly why, but the use of process forks and some other advanced mechanism must loose RenderDoc. Since RenderDoc needs to get attached before any graphical operation is initiated, we will use the --gpu-startup-dialog argument available in Chrome. It opens a popup telling on which GPU chrome is running, and does so before initializing the graphics. So we can launch chrome, attach RenderDoc, and only then press the Ok button on the popup.

For convenience, I created a shortcut with the target:. It is important that after the injection, and after you validated the popup, the status box in RenderDoc shows something different than None in front of "API:". Now, open the Sketchfab page of your choice, and take a capture using F To ensure that the capture will include the part about the 2D model, turn the 3D view at the same time. This way, the GPU will have to recompute it. This time, the render events list is much longer than in our example.

This may vary, but I have calls to the graphics API recorded, organized in many passes. If you have significantly less events, or just a single render pass, this might be that you captured a compositing pass, drawing the UI of the browser instead of the viewer events.

There are many draw calls. Some render the same list of attributes, with the same index buffer. Typically, the first pass, or the two first passes, are rendered from the position of the light, and used to compute the shadow maps. Track the draw calls that use all the textures, using the Texture Viewer panel. In my case, it is in pass 3. My pass 3 has 5 draw calls. The last one has only 4 points, it is the ground plane. The previous one are the two parts of the mesh, with for each one a triangle strip followed by a triangle list to fill the holes.

This matches the description found in the JSON file. Note that the vertices in the CSV are sorted, and potentially repeated, according to the index buffer, so you don't have to worry about this. This is a very basic algorithmic exercise: given a list of indices [1, 2, 3, 4, 5, 6, 7, Note that the second triplet is 3, 2, 4 and not 2, 3, 4 in order to preserve the face normal.

Every odd triplet must be reversed like this. Once again, I don't want to make it easy for anybody to download models from Sketchfab, so I won't provide any full-featured script.

I will have less concern regarding Google Maps. If you are publishing content on Sketchfab, you might be a bit worried. But don't worry too much. It is still a lot of work, and skilled work, to steal your models, so in many cases if you sell your model at a reasonable price it will remain more expensive for a company to steal than to buy.

And it gets even more complicated when your model is animated, or uses advanced rendering effects. If you really freak out, add watermarks directly on the textures of the model. Of course it does not protect the geometry, but what is a geometry without its texture? Especially if it is a low poly on which a high definition model has been baked. If you sell point clouds from 3D scans, don't include all the points in the WebGL preview, or maybe show the true density only on one part of it.

If you sell triangles, cut you mesh into many little meshes, it'll get longer to retrieve it. I don't know, get inventive, or trust people. Anyway, it remains illegal to use your stolen models, which adds another cost to the thief. Which data bottleneck should we focus on?