Turn the camera upside down in a Three.js environment

I am currently utilizing PerspectiveCamera along with OrbitControls. I have a query regarding flipping the camera entirely upside down, thereby making the scene appear inverted. Would it be possible to revert it back to its original orientation afterwards as well? Any assistance on this matter would be greatly appreciated. Thank you in advance.

Answer №1

UPDATE: AS SUGGESTED BY @EastSmith

To achieve the desired effect, simply rotate the camera 180 degrees by using camera.up.set(0, -1, 0); after defining your camera.

    camera = new THREE.PerspectiveCamera(fov, aspect, near, far);
    camera.position.set(0, 0, 1000);
    camera.up.set(0, -1, 0);

https://i.sstatic.net/DpWMg.png

If you need to revert back to the original orientation at any point, simply set it back to 0. I suggest using a variable if you plan on flipping it based on user interaction.

//somewhere in your code
let flipped = true; //or false depending on user input
camera.up.set(0, (flipped ? -1: 0), 0);

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