camera in three js

Shirshak Kandel answered on October 17, 2021 Popularity 9/10 Helpfulness 2/10

answer camera in three js

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camera in three js

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camera is like a window to our scene.When defining a camera we create 
what is called a “frustum” — a mathematical term for a four-sided rectangular 
pyramid with the top cut off.
const perspectiveCamera = new THREE.PerspectiveCamera(
  50, // fov — Camera frustum vertical field of view.
  width / height, // aspect — Camera frustum aspect ratio.
  1, // near — Camera frustum near plane.
  2000 // far — Camera frustum far plane.
);
two most useful camera are the perspective camera and the orthographic camera.
1)Perspective camera — depth perception is emulated in order to
reflect the way the human eye perceives the world.
2)Orthographic camera —  there is no depth perception, so no matter where the
object is placed in the scene,it will look the same size. This is useful for 
isometric games, for instance.

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Source: medium.com

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Contributed on Sep 30 2022

Shirshak Kandel

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const camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 0.1, 1000 );
const helper = new THREE.CameraHelper( camera );
scene.add( helper );

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Source: Grepper

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Contributed on Oct 17 2021

Ren

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Camera controls in three js

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Camera control is another type of extension that adds a layer of interactivity 
to our scene, allowing the users to zoom in and out, rotate the scene or
even navigate within it.the orbit controls, which just by defining them lets 
the user rotate and zoom into the scene.

const orbitControls = new OrbitControls(camera, renderer.domElement);

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Contributed on Sep 30 2022

Shirshak Kandel

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camera in three js

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