Interactive Division Grand Prix Hosei University Virtual Koganei Campus

This is a virtual Koganei Campus, which was opened to the public at the joint Web Open Campus of the three science faculties in FY2020. As long as you have a smartphone or PC, you can freely explore the campus "anytime, anywhere" from the virtual SNS "cluster".

This work is a digital content released at the joint Web Open Campus of the three science faculties in the 2020 academic year. We aimed to create a faithful reproduction of the Koganei campus and implement interactions that allow students to explore the campus naturally, so that high school students and undergraduates who are unable to visit the university for various reasons can have an experience similar to actually going to the university with a smartphone or computer. A 3D model of the campus, modeled from scratch as the public world of cluster, a virtual social networking tool, was created, and visitors can walk around in the 3D model, which includes a full-surrounding image to confirm that the campus has been faithfully reproduced. To convey the appeal of the campus, a mini-game was also implemented, which is like a stamp rally around the various parts of the campus. In addition, we implemented a warp function that allows users to easily move around the large world when visiting various locations, a hand-held map to check their current location within the world, and placement of an operation explanation panel for those who have never used cluster before.

The world creation was done in Unity using the Cluster Creator Kit released by the official Cluster Creator Kit.
Since the project required a large number of people, we used Notion for task and progress management and Unity Collaborate for version management to ensure smooth collaboration.
Blender 2.8 was used to create the 3DCG models. This enabled us to perform everything from modeling to texture adjustment in one go.
The full-circle images of the campus were taken using Insta360 One X and RICOH THETA S, and adjusted in Lightroom.
For the windows in the north building, a reflection probe was installed to simulate reflections, and the image was adjusted to show the same reflections as the full-circle image placed in the courtyard.
Since many objects were placed in the courtyard, the operation became slow, so we used an asset called Mesh Baker to combine the objects to reduce the weight. In addition, for objects that are used in large numbers, such as doors, fences, and railings, the model was baked onto a flat surface to reduce the polygon count.
New shaders were implemented for the aerial display of building names so that they always face the player's direction. A shader was implemented for the current location display on the map as well.

This work is representative of the normative digital content of Hosei University's Virtual Open Campus. The work allows visitors to easily view the Koganei campus, which is faithfully reproduced in a virtual space, from their smartphones or PCs, and also tickles the fancy of students interested in science by allowing them to witness 3D modeling. It is hoped that this work will be disseminated to all campuses in the future.