Rotate camera in Three js with mouse

Question

I have quite a few objects in my scene so rotating all of them could be a pain  So what is the most easy way to move camera around origin on mouse click and drag  This way all the lights  objects in the scene are in the same location  so the only thing changing is the camera  Three js does not provide a way to rotate a camera around a point  or does it   Thank you

User · Answer

Take a look at THREE PointerLockControls

User · Answer

This might serve as a good starting point for moving rotating zooming a camera with mouse trackpad  in typescript    class CameraControl       zoomMode  boolean   false     press  boolean   false     sensitivity  number   0 02      constructor renderer  Three Renderer  public camera  Three PerspectiveCamera  updateCallback      gt  void           renderer domElement addEventListener  mousemove   event   gt                if  this press   return                if event button    0                   camera position y -  event movementY   this sensitivity                 camera position x -  event movementX   this sensitivity                       else if event button    2                   camera quaternion y -  event movementX   this sensitivity 10                 camera quaternion x -  event movementY   this sensitivity 10                            updateCallback                           renderer domElement addEventListener  mousedown        gt    this press   true            renderer domElement addEventListener  mouseup        gt    this press   false            renderer domElement addEventListener  mouseleave        gt    this press   false             document addEventListener  keydown   event   gt                if event key     Shift                    this zoomMode   true                                   document addEventListener  keyup   event   gt                if event key     Shift                    this zoomMode   false                                   renderer domElement addEventListener  mousewheel   event   gt                if this zoomMode                    camera fov    event wheelDelta   this sensitivity                 camera updateProjectionMatrix                 else                   camera position z    event wheelDelta   this sensitivity                            updateCallback                        drop it in like   this cameraControl   new CameraControl renderer  camera       gt           you might want to rerender on camera update if you are not rerendering all the time     window requestAnimationFrame      gt  renderer render scene  camera        Controls      move while  holding mouse left   single finger on trackpad  to move camera in x y plane   move  mouse wheel   two fingers on trackpad  to move up down in z-direction   hold shift    mouse wheel   two fingers on trackpad  to zoom in out via increasing decreasing field-of-view move while holding  mouse right   two fingers on trackpad  to rotate the camera  quaternion    Additionally   If you want to kinda zoom by changing the  distance   along yz  instead of changing field-of-view you can bump up down camera s position y and z while keeping the ratio of position s y and z unchanged like      in mousewheel event listener in zoom mode const ratio   camera position y   camera position z camera position y     event wheelDelta   this sensitivity   ratio  camera position z     event wheelDelta   this sensitivity

User · Answer

take a look at the following examples  http   threejs org examples  misc controls orbit  http   threejs org examples  misc controls trackball  there are other examples for different mouse controls  but both of these allow the camera to rotate around a point and zoom in and out with the mouse wheel  the main difference is OrbitControls enforces the camera up direction  and TrackballControls allows the camera to rotate upside-down   All you have to do is include the controls in your html document   lt script src  js OrbitControls js  gt  lt  script gt    and include this line in your source   controls   new THREE OrbitControls  camera  renderer domElement

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OrbitControls and TrackballControls seems to be good for this purpose   controls   new THREE TrackballControls  camera    controls rotateSpeed   1 0  controls zoomSpeed   1 2  controls panSpeed   0 8  controls noZoom   false  controls noPan   false  controls staticMoving   true  controls dynamicDampingFactor   0 3    update in render  controls update

User · Answer

Here s a project with a rotating camera  Looking through the source it seems to just move the camera position in a circle   function onDocumentMouseMove  event          event preventDefault         if   isMouseDown              theta   -     event clientX - onMouseDownPosition x     0 5                     onMouseDownTheta          phi       event clientY - onMouseDownPosition y     0 5                   onMouseDownPhi           phi   Math min  180  Math max  0  phi               camera position x   radious   Math sin  theta   Math PI   360                                 Math cos  phi   Math PI   360            camera position y   radious   Math sin  phi   Math PI   360            camera position z   radious   Math cos  theta   Math PI   360                                 Math cos  phi   Math PI   360            camera updateMatrix                mouse3D   projector unprojectVector          new THREE Vector3                event clientX   renderer domElement width     2 - 1              -   event clientY   renderer domElement height     2   1              0 5                    camera            ray direction   mouse3D subSelf  camera position   normalize         interact        render         Here s another demo and in this one I think it just creates a new THREE TrackballControls object with the camera as a parameter  which is probably the better way to go   controls   new THREE TrackballControls  camera    controls target set  0  0  0

[javascript] Rotate camera in Three.js with mouse

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