Tag: 3D models in wayfinder

This tutorial will show you how we use bevel in some of our 3D wayfinding maps.

There are 3 main options in Blender to get the beveled edge look.

First is the Bevel Tool

Select the object you want to bevel in Blender, go to edit mode then select the bevel tool from the left row (press T key to enable it if it’s hidden).

Select the edges you want to bevel and click and drag the yellow circle to adjust bevel amount. When satisfied you can further fine tune it in the toolbar that’s located on the left bottom side. Faster way to add the bevel tool is to use shortcut ctrl + B and adjust amount with mouse. Press right mouse button when you are done.

Second, Less Common Way is to Use Extrude & Scale

Select the object you want to bevel in Blender, go to edit mode then select the face(s) of which edges you want to Bevel. Extrude (press E key) the face(s) on z axis (press Z key) and move them up a bit. Then scale them down (press S key) until you have the desired look.

WHEN YOU ARE BEVELING MULTIPLE OBJECTS AT THE SAME TIME MAKE SURE TO CHANGE TRANSFORM PIVOT POINT TO INDIVIDUAL ORIGINS.

Final and Nondestructive way

Nondestructive meaning that the bevel doesn’t fundamentally change the mesh. This also means that you have to check the apply modifiers button when exporting mesh.

Go to modifier properties (blue wrench icon) and click add modifier then click bevel.
Leave segments to 1 and adjust the amount to your liking. If it doesn’t work right away then go to geometry tab under bevel and turn off clamp overlap and correct the amount.

To add bevel only to those edges that you want, change limit method to weight. Go to edit mode, select the edges you want to bevel then open right sidebar (press N key) under tab “item” change the mean bevel weight to 1.

Before Adding The Bevel Modifier it’s a Good Practice to do and Check The Following

1. Mesh needs to be clean and use only quads.

• Removing tris– select everything– go to edit mode– make sure everything is selected– then use ALT + J or on the top bar go to Face– “Tris to Quads”.
• If there are still some tris then have to manually merge them. Select the vertices and press M– “Collapse”. Second option is to just remake the whole box.

2. Make sure that normals are correct. Check this by going to “Show Overlays” and enabling “Face Orientation”. If Everything is blue then move on to step 3.

• Fixing normals– select everything– go to edit mode– make sure everything is selected– use ALT + N– “Recalculate Outside”.
• If some are still red then you have to manually select the red ones and use “Flip”. (ALT + N)

3. Make sure there are no Doubles.

• Select everything– go to edit mode– make sure everything is selected– press M then click “By Distance”– open the little box on the left corner of the screen– set merge value to 0.00001 m

4. Make sure Object scale is set to 1 on XYZ.

• Select 1 object– use shortcut CTRL + A– click on “All Transforms”. Do the same for every object.

Our goal at 3D Wayfinder has always been to bring affordable products and services, without sacrificing quality. Accordingly, we have made a few updates in our 3D model rendering. We are constantly updating our software to enhance your experience and to stay competitive in the venue management and digital signage market.

Like in motion pictures, computer graphics create images at a certain frequency – frames per second (FPS). This dictates how we perceive motion and the smoothness of it. For example, early silent films had a FPS of about 16-24. This was enough to give a lifelike representation of movement, that would amaze people. Our usual frame rate is 30 FPS, because anything larger is unnecessary. In addition, FPS also affects the performance of the devices that process it. Obviously, the higher the FPS and the level of detail, the more resources a device has to allocate to display it.

Our 3D models have a varied level of detail, according to the client’s wishes. For instance, a 3D model of a hospital can contain chairs, people and beds with pillows and blankets.

More Detailed Shadows Without Reducing Performance

In order to reduce pressure on the device’s GPU (Graphics Processing Unit) we have stopped the rendering of shadows for every frame. The position of a theoretical sun in the model is always the same. Therefore the shadows stay the same as well. There is no need to waste resources on rendering shadows again and again. The shadows still change according to the number of floors displayed. This allows the device to save energy and use it’s processing power for other needs.

Moreover, we added an option to increase the level of detail for shadows. Until now we used a 2048×2048 image for shadows, which is fine for smaller projects. Now it is possible to increase size from our settings page depending on the hardware capabilities of your project. This doesn’t reduce the device’s performance in a significant way, but does offer a more realistic experience.

These might be a small changes, but we believe that fine-tuning details like these make us the market leader!

3D Wayfinder is now being used for Building Information Model (BIM) applications. By creating BIM kiosk software for Estonian National Museum we have added many new and useful features to our software and improved the performance for larger models.

Estonian State Real Estate Ltd ordered Building Information Model solution from us for recently opened Estonian National Museum. Now the visitors can easily explore the 3D model of the whole construction. Also they get the overview of the building by all the details.

What is BIM applications?

BIM model is a digital equivalent of the building. It can contain everything from doors to electric fixtures. Although BIM applications technology and methodology is more common in the design of the building. It has large potential benefits for buildings management and maintenance phase.

Estonian National Museum’s new building is meant both for exhibitions and scientific work with net area of 33 879 square meters. We received a model of a building made with Revit, Autodesk software for BIM. It contained highly detailed information – e.g. all the pipes – so it needed a lots of simplifying.

After the adaptations we still had a huge file with close to 12 000 separate elements. It is the largest model we have had in 3D Wayfinder. It was also the reason why we changed the logic of initializing POI data to make the loading of large objects faster.

Table view for all objects in BIM model was done by using Spreadcell. Spreadcell has easy upload from MS Excel files and it provides table-view, sorting etc by webservices (in JSON format). All the objects are divided into separate groups so the final user can choose what do they want to see, hide or find.

Kiosk design

We also built and designed the kiosk from scratch. Since most of the modern kiosk hardware is only enough for showing advertisements or 2D wayfinding plans. The kiosk is equipped with a landscape LCD screen, a touch panel and a dedicated graphics card. It makes kiosk suitable for applications that require greater graphical computing capabilities.

3D Wayfinder application helps to make BIM useful for those who have no access to specific softwares themselves. For example we can integrate BIM with different management softwares. Also add the ability to write comments. In this way we make it easier for different parties to collaborate on centrally shared model.

We have improved our 3D rendering engine. Thanks to better memory management we got 10..20% performance increase in FPS with larger 3D models.

We updated our WebGL javascript engine – FRAK – in 3D Wayfinder. Many memory management functions have been improved in the new version. With the new FRAK engine 3D Wayfinder provides better loading speed performance for larger 3D models, that use more memory. With smaller 3D models, the increase in speed is not noticeable.

Testing with one really large shopping mall floor plan we got increase in performance in average 15%. In idle mode we recorded 16 frames per second (FPS) increase, jumping from 44 FPS to 50 FPS. While actively showing path we recorded a 7 FPS increase, jumping from 38 FPS to 45 FPS. In normal use, 3D Wayfinder is limited to 30 frames per second.

Until now all the materials in 3D Wayfinder have been replaced with each 3D model update. Now it is possible to keep the materials and their attributes’ values. This will save a lot of time, when creating a nice-looking 3D wayfinding application. See how to separating materials from geometry.

We have added a small feature to our 3D model converter. That enables to replace the 3D models without overwriting the materials. This means, that all the changes that were made in 3D Wayfinder for the purpose of tuning materials, are not lost when replacing 3D models. See it in user manual.

3D modelling software packages are different and the way 3D models are exported also varies. In most cases you need to change the color of the materials (diffuse and ambient color). After the creation of the model to get good looking 3D floor plans. We are now supporting specular shader, transparency etc. that might not come directly from the converted models. All these material attributes can be changed in 3D Wayfinder, but these values were replaced each time the geometry was updated. Now there is the option to keep the materials and their values, when replacing the 3D model.

At the same time we have added ambient attributes to each material when uploading the 3D model for the first time or when replacing the model. So there is no need to enter the “ambient” attribute anymore, just change the color.

FRAK WebGL engine has now built in Cubemaps and reflection shader. This gives 3D Wayfinder access to use reflections of surrounding area.

We have added built in cubemaps and cubemap reflection shader to FRAK WebGL engine. In addition reflection with cubemaps is efficient way to create reflective surfaces like glass or mirrors.
Also cubemap reflection is a rendering method. It means that reflective surfaces reflect the cubemap textures.

It will be available for 3D Wayfinder in near future. This will be the effective way to create large glass walls or buildings. It make them more realistic. It might be used also for expensive shopping mall floors.

Next feature in FRAK will be specular map to mark efficiently reflective areas.

Cubemap demo can be found under FRAK repository.

Currently we are developing features to insert external 3D models to floor plans. With this it would be possible to add these “little details” (like escalators, benches, trees or even cars). That make the floor-plans look realistic. The best thing is, that it doesn’t require any 3D modelling skills. So all our users can detail the floor plans by themselves.

3D object library can be opened in Editor window with object thumbnails:

Added objects appear on the 3D scene. The good part here is, that the same model can be used inside the scene many times. Therefore it doesn’t increase the downloadable model sizes as each model will be loaded only once.

3D models to floor plans can be resized and moved inside the 3D Wayfinder.

With external 3D models. We will definitely provide common library of models we are using to detail the floor plans. For example these will include trees, cars, different indoor plants, escalators, tables, stairs and so on. See our user manual.