Design for Android-Based Virtual Tour Application Using Polygonal Modeling and Extrude Face

STMIK Amik Riau is the first Computer College in Riau under the Kopertis Region 10 which has an activity based on the information technology sector. This certainly requires the campus management to take advantage of technological developments in every academic activity. STMIK Amik Riau has quite a lot of facilities and infrastructure to support academic activities. However the problem is that the introduction to campus area system has not followed the current competition trend, because the campus introduction system used is still web-based and utilizes social media such as Facebook and Instagram. In order to improve the services of the campus, a virtual tour application that presents android-based campus area information is designed. This application is designed android based by using Polygonal Modeling and Extrude Face Polygonal modeling is an approach to modeling objects using points that determine the area of a surface so that it can create fields from three-dimensional (3D) models. With the application of Android-based technology, the resulting application is expected to be easily accessed because almost all levels of society nowadays have used a Android smart phones. This certainly facilitates the public and students in obtaining information about the shape of the building and the area around campus.


Introduction
Higher Education is an institution expected to be able to produce competent human resources in various fields of science. The base of activities in STMIK Amik Riau is the information technology and information science sector, which certainly requires the campus management to take advantage of technological developments in every academic activity including promotion. However the problem is that the campus' environmental introduction system has not followed the current competition trend, because the campus introduction system used is still web-based and utilizes social media such as Facebook and Instagram. This certainly requires the STMIK Amik Riau to be able to provide attractive and interactive android-based information services, so that it can improve competitiveness in the field of information. From the problems described, the researchers conduct a study with the title "Design for Android-Based Virtual Tour Applications Using Polygonal Modeling And Extrude Face". This application is a result of the development of multimedia information technology and three-dimensional (3D) technology. The Virtual Tour application itself is an application that can display 3D JAIA -Journal Of Artificial Intelligence And Applications Vol. 1, No. 1, October 2020, pp. 19-27 ISSSN: XXXX-XXXX, DOI: XX.XXX 20 views so as to make users as if they were physically involved. By using this application, people will find it easier to get information about the shape of buildings and the area around the campus without having to be on there themselves since the shapes of buildings and the area around the campus are presented in 3D and can be accessed directly via smartphone devices. This application is expected to be one of the solutions to improve information services to the community, as well as to the freshmen who enroll at STMIK Amik Riau.

Virtual Tour
Virtual tour is a technology that allows a person to do a simulation of a real object by using a device that will display a threedimensional (3D) atmosphere to make users as if they were physically involved and allows users to increase situational awareness and increase the power of sight, capture and analysis of virtual data significantly (Wulur, Sentinuwo, dan Sugiarso, 2015). This technology will display a picture of a location that can be seen with a 360 degree viewpoint. Virtual tour technology is very helpful in simulating something that is difficult to present directly in the real world. Virtual area generally present a visual experience, which is displayed on a device such as a computer or smartphone. Virtually simulated area can be made to resemble the real world. Presentation in a virtual tour can be done by utilizing images, videos, and three-dimensional (3D) models.

Polygonal Modeling
Polygonal modeling is an approach to modeling objects using points that determine the area of a surface so that it can create fields from three-dimensional (3D) models (Setiawan dan M Suyanto, 2016). Polygon is a two-dimensional (2D) shape in the form of n-shape where n is the side that amounts to three or more. In general, polygons are surface shapes of three dimensions (3D) in which are composed of vertices, edges, and faces. A polygon can be analogous to a single triangle, which later when developed and arranged can form a three-dimensional (3D) object. The polygon forming elements are as follows:

Vertex
Vertex is a collection of points that become the coordinates of a surface in modeling objects.

Edge
Edge is the line segment that connects a vertex point to other vertex points.

Face
Face is triangular or rectangular elements that forms a polygon consisting of a collection of vertices and edges.

: Extrude Face
Extrude face is a technique used to form new polygons on a three-dimensional (3D) model by adding face elements to certain axes (Hidayat, 2015). This technique is used to facilitate users in editing three-dimensional (3D) models using polygonal modeling. The stages in conducting extrude face are as follows: 1. Open the blender application and select the three-dimensional (3D) model that you want to extrude by entering edit mode.

Designing System
The designing system was done as an analysis, understanding, visualization and communication for system developers. This stage consists of designing system activities and designing interfaces.

Designing System Activities
Designing system activities was done to visualize the activities done within the system. The model employed was use case diagram. The use case diagram employed within this study is presented in figure III.1. The following is the explanation of the use case diagram shown in Figure 3.1. above: Users are actors who interact with applications designed to get the information needed. The interactions that can be done by users include: 1. Users can tour the campus area virtually and navigate using virtual analog available on the system. 2. Users can see the shape of the building with a 360 degree viewpoint by using the rotate and scale slider available on the system. 3. Users can see the instructions for using the application in the menu provided. 4. Users select the "exit" button so that they can exit the application.

Designing the Main Page
Designing the main page is intended to display the starting page when a user accesses the system.

Designing Virtual Tour
Designing virtual tour is the process of making a virtual tour using a unity application by combining several three-dimensional models that were created in the previous stage so as to form a virtual campus area in STMIK Amik Riau. The steps in designing a virtual tour in a unity application are as follows: 1. Import virtual tour-making materials 2. Set the coordinates of the three dimension (3D) model 3. Import standard assets as plugin character and virtual analog 4. Set the lighting on virtual tour objects three dimension (3D) model. 5. Add characters to the virtual tour so that the camera can move and follow the character's movements. 6. Perform character movement sensitivity adjustment. 7. Add plugin mobile single stick controller as the virtual analog to do a virtual tour with an android device. 8. Write a script to display pop-up information from each of the STMIK Amik Riau campus building models.

Test Results
The results of software implementation discuss the implementation of the results of analysis and system design.

Main Page
The main page is the initial display page when users access the Android-based virtual tour application using polygonal modeling and extrude face techniques

Virtual Tour Page
The virtual tour page is a page used by users to tour the area of STMIK Amik Riau virtually. As for some of the results of the implementation of the virtual tour page is as follows:

Garden / Park
The garden / park is a part of the facility that has functions related to the functions of hydrology, ecology, aesthetics and recreation.

Administration Management Room
The administrative management room is a room that is used for administrative arrangements.

Library
Library is a building that contains collection books that are arranged in such a way that they are easy to find and use if at any time required by the reader.

Laboratory
Laboratory is a building that is used as a place for the teaching and learning process of concentration and practice courses.

YKR Convention Hall
The YKR Convention Hall is a building that is used as a place to hold academic activities such as graduation, seminars, workshops and other events.

360 Degree Building Page
The 360 degree page is the page used by users to view the shape of the STMIK Amik Riau campus building with a 360 degree The 360 degree menu is a view of the building menu on the 360 degree page.

System Help Page
The system help page is a page that displays information about the instructions for using the application.

Test Results
The test results are designed to prove that the Android-based virtual tour application used polygonal modeling methods and extrude face runs as expected and has passed the error test. The discussion of the results of this test consists of testing techniques and the conclusions of the test results.

Testing Technique 1. Virtual Tour Page Testing
Virtual tour page testing is a test conducted to minimize errors that occur on the virtual tour page, so that the process that occurs on the virtual tour page runs according to its function.

Virtual Analog Testing
Virtual analog testing is a test conducted on the movement of the camera using virtual analog, so the camera can move according to the user's wishes. The complete test can be seen in table 4.1.

Smartphone Devices Specifications Testing
Smartphone device specification testing is a test conducted to find out whether an application can run on smartphone devices that have lower specifications compared to the device specifications used by researchers. The complete test can be seen in table 4.5.

Testing Results
Based on the results of testing of Androidbased virtual tour applications using polygonal modeling and extrude face, it can be concluded that this system functions as expected and can run on smartphone devices.