They can view the property on their phones in full 3D format, helping them make a decision faster. You might assume that VRML is a new web language, but it was actually proposed back in during the first World Wide Web conference. The idea was to use VRML in order to promote a future of virtual reality websites.
VRML never quite took off the way it was originally envisioned. However, it has found applicability and popularity in niche areas such as data exchange in Computer Aided Drafting CAD programs. Call us: 1- Why Spatial? What is a WRL File?
Written by Spatial Team. Slide mode slides you left, right, up, or down while keeping you pointed in the same direction. This is handy for looking around corners or dodging objects. There is also a menu that controls the default settings of the VRML world. Using the Options Menu The last part of the Live3D interface that you regularly use is the Options menu, which you get by clicking the right mouse button.
The Options menu has all the options for customizing your viewing preference. Viewpoints At the top of the Options menu are four items dealing with viewpoints. These are predefined points that you can visit in a VRML world. The first item contains a list of all the viewpoints in this world that you can select. Upon selecting one, the browser takes you to that position. Once there, you're free to navigate around as normal. Should you get lost or disoriented, then selecting the Current Viewpoint option takes you back to the last visited viewpoint.
You can check out each of the views in order by selecting the Next and Previous Viewpoint options. Navigation Next on the list is the Navigation menu. The submenu lets you control how you move around the world. The first five items are the same as the menu bar options outlined in the previous sections, except that they control what the cursor keys do.
The previous sections outlined what the effect of the mouse did-these same navigation methods can be achieved using cursor keys. The menu also adds one more: Fly.
Fly enables you to navigate just like a flight simulator, with the same key setup as Descent. A and Z move you forward and backward while Q and E roll you right and left, respectively. Straighten returns you to the normal relationship to the ground and usually back to the starting point. One of the things that VRML 1. The next 3 options control how to make the system feel more real. Stay On Ground makes your view follow the terrain. This can be used to climb stairs, follow mountainous terrain, and do all sorts of neat tricks.
When you're in Fly mode you may want to have the scene feel like you're in a real aircraft, so select Bank When Flying. This stops you from walking through objects as you otherwise would. The last pair of options control how you move between points. If neither of these options are selected then you always jump to a point. However, it's a much nicer effect when you select the animation option, because the browser flys you to the selected point.
The end result is like being carried on a tour bus through the scene to the next viewpoint. Lighting Sometimes you need to adjust the lighting within the world. The browser defines a headlamp for you. This headlamp is a directional light that always points in the direction that you're facing. In dark or dimly lit worlds this is really handy-it gives you a miner-in-a-cave perspective on things. The first option enables you to turn the lamp on or off, while Dimmer and Brighter enable you to control the amount of light.
Besides controlling your own light, you also can control how objects in the world are lit. Smooth Shading makes rounded objects look round rather than tessellated, but it also makes the rendering slower, particularly on slower machines.
If you have lots of processing grunt, then turning on Texture Lighting makes everything look even better when texture mapping is used on objects. Detail If you're having problems with computer speed particularly in large worlds , then the Detail submenu is where you should head. This submenu enables you to define how the world looks, either as Solid objects, where you can't see through them, Wireframe, or as a Point Cloud of the vertices.
Point Cloud is not normally very useful and can get you disoriented very quickly. In a highly detailed model with lots of polygons, you can usually just make out the shape of the object from the points. The points are just the individual vertices that make up an object, so in a low-detail world all you end up with is an apparent mass of random points. While you're still learning to navigate, the Navigation Help option turns on hints that are printed in the lower-left corner, giving you details about what the keys are for the current navigation mode.
The other helpful item is the Download Status. This presents a little blue and yellow bar across the top of the navigation menu bar, indicating the status of the world download. The blue section indicates how much of the download is complete and the yellow section indicates the progress of the internal processing of the file.
Options In this submenu, you'll find the miscellaneous options for controlling the general behavior. Fast Rendering allows Live3D to take shortcuts to produce a better frame rate. This means a loss in quality of the picture while you're traveling around.
In big worlds it is a much-needed option. Providing you're sober, the Motion Blur option is great fun. This is the same effect as motion blurring in Magic Carpet, and gives that extra effect of speed as you travel through worlds. It does, however, slow up the responsiveness of the browser considerably.
On a normal 2D display this option is disabled. Another option that you might want to include is Generate Back Faces. This option is used when you have worlds full of polygon meshes.
Normally, only one side of the polygon mesh is visible-the front face. When you go behind it, you can no longer see it because there is no face defined for you to see. This option makes sure you can see it from both sides. The Navigation Bars option turns the bar across the bottom of the window on and off, while Optimize Window Size controls the size of the viewing window to get the best rendering speed.
The Save Settings As Default option is self-explanatory. The first pair are VRML 1. The second pair are the only two VRML 2. They are what have been used to test the examples in this book. One of the interesting things about browsers is that even on the same machine the coloring and lighting can be completely different for the same scene.
To demonstrate this, the same scene has been used for each pairing of Objects. The VRML 1. There is a larger problem in VRML 2. Intervista's WorldView The first browser comes from Intervista. WorldView is available either as a standalone program or as a plug-in to Netscape 1.
WorldView has one advantage over Live3D in that it can run with whatever your favorite browser environment is. The screen shot presented in Figure One of WorldView's nice features is its ability to nominate your own camera positions while navigating a world and then return back to them. The rendering is very smooth, but it isn't very accurate for handling mesh objects. As a result, it's one of the most developed and stable browsers of the current crop.
See Figure It is also one of the strictest browsers in terms of compliance with the VRML 2. If your file doesn't pass this test then you should definitely go back and fix it up until it does.
The rendering of objects with VR Scout is more accurate than WorldView-particularly large mesh objects, but this means that the performance is not as good-even though both programs have the same underlying rendering library. In my general experience, it seems to be about half the speed, although it will be different for each person. Accurate measurement is really not possible. So they started from scratch. This sometimes causes problems with files that aren't quite VRML 1. This early beta contains a different dashboard from what you will see in the final product.
CosmoPlayer supports JavaScript for programming simple behaviors. While this does limit some of the potential functionality, all your common behavioral tasks can be constructed. Only if you are doing some very complex worlds using networking will you need to use something else. It is available only as a Netscape plug-in. Yes, Sony does produce things other than TVs and stereo systems.
In the second version, it now supports VRML 2. CyberPassage operates only as a standalone product, which is a bit of a pity, but its very fast rendering puts it ahead of CosmoPlayer on most aspects.
CyberPassage supports Java for scripting, which makes it much more extensible when you need to do that little something extra, such as talking to a network or running multithreaded behaviors within a script. It still retains its multiuser capabilities from the first version, allowing you to participate in virtual worlds with people from around the globe in real-time.
Most of the rules for creating Web pages also apply to creating 3D worlds. If you create a 3D scene, make sure that it's interesting and offers the user something to do. Similarly, if you create a plain HTML page with no headings, just pure text, it too will be boring-ensuring that visitors only visit once. Suppose that you create a Web page that looks absolutely stunning, but it takes twenty minutes to download.
How often do you expect people to visit? You must apply the same rules to VRML worlds that you create. Keeping down the use of large images textures , sticking to using color only, and using simple primitives are some techniques.
Chapter 18 , "Tricks to Optimize Your VRML Worlds for the Web," presents some of the more frequently used methods to optimize your creations and keep people coming back. An outstanding HTML Web page can be put together in a few hours-if you have all your resources ready to go.
It always pays to spend some time planning what your new world will look like in all three dimensions. You can create a Web page in a number of ways. Equivalents exist for the VRML world builders. However, with the pace at which VRML is developing, you'd better become comfortable with the text editor. Indeed, if you're seriously considering using VRML 2.
Even once some modeling tools become available it has been the experience of most current VRML developers that you need to get into hand-editing the file after finishing with the modeling tool. This is particularly true with VRML 2.
The next chapter discusses the creation of basic VRML files from scratch. For the moment, you can put the editor away as you look at a few of the current VRML 1.
This provided a very quick working base for many VRML worlds because they could leverage existing knowledge to get going. Today a number of these tools contain plug-in exporters that can automatically produce VRML output files.
One of the most widely used is Syndesis Corporation's Interchange, which acts as a plug-in file exporter for most popular modeling tools. The next section looks at several of these. Another approach that many of these companies are taking is to build VRML export options right into their modeler. One example of this is Ray Dream Studio, whose 4.
The following steps illustrate how this is done: Set up your scene by positioning your objects, lights, cameras, and such. Save the file as a VRML 1. Select VRML as the file type and give the project a name.
Ray Dream responds with a message box that warns that some elements will be lost if not saved in Ray Dream's native format, which is true. Version 2. Full source code for the browser is available. Authoring Tools To produce simple worlds, a text editor and a knowledge of the VRML specification is all that is required.
However, as worlds become more complex, there are additional tools which can help. These fall into two categories, modelers or 'world builders' and conversion or translation programs. Available for Windows 95 or NT, it comes with a large library of 3D objects. Caligari's trueSpace4 www. A trial version is available for download. Windows 95 and NT. Common formats which can be converted to VRML 1. A few examples are given below to illustrate this wide variety of uses. Assorted VRML visualisations of areas of the brain, and some neural network visualisations.
Bandwidth An indication of how fast information is transferred across a computer network. A low bandwidth application is one which transmits a relatively small amount of data.
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