**7.1 Scene with slopes**

One of the wheelchair simulator's goals was to teach a disabled person to go through elevated terrain. Such obstacles are mostly situated inside buildings in real life. Mostly staircases, which have barrier-free platform placed on them, have the steepest ascent. Therefore, scene with slopes was created. Whole scene consists of one big room with two slopes on the edges of the room and patient can go through

**Figure 13.** *Scenes representation in wheelchair simulator.*

them. Scene is categorized as a small scene because its visible width is a few meters. **Figure 14** shows scene details as well as its top view with explanation.

### **7.2 Crosswalk-day and crosswalk-night**

People living near roads will encounter crosswalks almost on daily basis. It is an unwritten rule, that crosswalk needs to be crossed as quickly as possible. Disabled person has a speed limitation. Due to this fact happens, some of them do not have confidence doing activities where they or other objects should move fast. Scene with crosswalk was designed for a person to gain confidence in a wheelchair. Scene was designed even in night mode as visibility of objects, such as cars, is limited. It is considered a small scene, even though it is situated outside because terrain is a size of a few meters. **Figure 15** shows scene details as well as its top view with explanation.

Scenario of crossing is simple. Cars are moving at a certain speed when traffic light is red. The traffic light will, after a few seconds, lights up in orange, signaling that a person can prepare for crossing. Then it lights up green signaling that person can cross the road. Cars will stop in front of the crosswalk. They do not have a collider to make sure, that if the patient is still on the road, and traffic light will light up red, cars will not move him/her out of the map. This can cause discomfort and dizziness.

### **7.3 Obstacle course**

A person in a wheelchair must learn to control it in a first place. To learn the lever manipulation, how it affects the wheelchair and how to rotate the wheelchair, the scene with cones was created. Obstacle course scene has two routes, where a disabled person can practice its wheelchair skills. That way he/she will gain agility to continue

**Figure 14.** *Scene with slopes.*

#### **Figure 15.**

*Scene crosswalk-day and crosswalk-night.*

**Figure 16.** *Obstacle course scene.*

*3D Computer Graphics and Virtual Reality DOI: http://dx.doi.org/10.5772/intechopen.102744*

with more difficult obstacles. Cones are static and have colliders so the person in wheelchair does not move them if he/she will bump into them. Same as other scenes, obstacle course is considered as a small scene. Following **Figure 16** shows scene details as well as its top view with explanation.

### **7.4 Elevator scene**

The elevator scene was designed to teach the person in a wheelchair to go through a narrow hallway or learn how to fit in an elevator. Scene is situated in a building with a staircase. It is impossible to go through the staircase as it has a collider. Therefore, proposed scenario is that person in a wheelchair wants to go upstairs. **Figure 17** shows scene details as well as its top view with explanation.
