Скачать или смотреть How to Display an Entire Bounding Box in the Frustum of the Camera in Unity

Learn how to adjust the camera position in Unity to ensure that an entire bounding box is displayed within the camera's frustum, providing a step-by-step solution.
---
This video is based on the question https://stackoverflow.com/q/73458484/ asked by the user 'Gemarib' ( https://stackoverflow.com/u/19828302/ ) and on the answer https://stackoverflow.com/a/73459184/ provided by the user 'derHugo' ( https://stackoverflow.com/u/7111561/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: How to display an entire bounding Box in the Frustum of the camera in Unity

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Display an Entire Bounding Box in the Frustum of the Camera in Unity

If you're developing a game in Unity, you may find yourself needing to ensure that your camera can capture the entirety of an object's bounding box. This requirement usually arises when you want the camera to adjust its position and orientation so that an object is always within view, regardless of its size. For instance, you might want the camera at a certain distance and height from the object, ensuring the bounding box remains aligned with the camera's frustum planes.

The Problem at Hand

The challenge is to configure your camera's position and rotation dynamically to accommodate objects whose bounding boxes vary in size. This means that as your game object changes (for example, if it grows or shrinks), the camera must seamlessly adjust to ensure that the entire object's bounding box is visible within the camera's field of view.

The Solution: Using Camera Extensions

To tackle this problem effectively, we can implement extension methods for the Camera class in Unity. These methods will calculate the appropriate camera settings based on the bounding box of the object. Below is a detailed breakdown of how to do this.

Step 1: Create Camera Extensions

Here’s how to implement the necessary functions to adjust your camera:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Implement Camera Positioning

After creating the extension methods, you must implement the logic to set the camera's position based on the type of camera you are using (perspective or orthographic). Here’s an example of how to do that:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Testing

After implementing the code, test it in your Unity scene:

Attach the script to your camera.

Use different game objects with varying sizes and observe how the camera adjusts automatically.

Conclusion

By employing these extension methods for the Camera class, you can ensure that any bounding box of an object in your Unity scene is always visible within the camera's frustum. This not only enhances the viewing experience but also maintains engagement as the objects change in size during gameplay. With a few lines of code, you’ll be able to keep everything perfectly captured in view!

Make sure to experiment with the additionalSpacing parameter to add some breathing room around the bounding box, allowing for better aesthetic presentation in your game.