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BABAK0T0/gist:bdbe6798a0025bc9dfe9691172fb8ed2

Forked from ayamflow/gist:96a1f554c3f88eef2f9d0024fc42940f
Created April 21, 2021 16:29
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Revisions

  1. @ayamflow ayamflow revised this gist Sep 11, 2017. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion gistfile1.js
    View file
    Original file line number Diff line number Diff line change
    @@ -1,6 +1,6 @@
    var cameraZ = camera.position.z;
    var planeZ = 5;
    var distance = cameraZ — planeZ;
    var distance = cameraZ - planeZ;
    var aspect = viewWidth / viewHeight;
    var vFov = camera.fov * Math.PI / 180;
    var planeHeightAtDistance = 2 * Math.tan(vFov / 2) * distance;
  2. @ayamflow ayamflow revised this gist Sep 7, 2017. 1 changed file with 5 additions and 1 deletion.
    6 changes: 5 additions & 1 deletion gistfile1.js
    View file
    Original file line number Diff line number Diff line change
    @@ -11,4 +11,8 @@ var planeWidthAtDistance = planeHeightAtDistance * aspect;
    let dist = camera.position.z - mesh.position.z;
    let height = ... // desired height to fit
    camera.fov = 2 * Math.atan(height / (2 * dist)) * (180 / Math.PI);
    camera.updateProjectionMatrix();
    camera.updateProjectionMatrix();


    // Basically solving an AAS triangle https://www.mathsisfun.com/algebra/trig-solving-aas-triangles.html
    https://i.stack.imgur.com/PgSn3.jpg
  3. @ayamflow ayamflow revised this gist Jul 13, 2017. 1 changed file with 3 additions and 4 deletions.
    7 changes: 3 additions & 4 deletions gistfile1.js
    View file
    Original file line number Diff line number Diff line change
    @@ -8,8 +8,7 @@ var planeWidthAtDistance = planeHeightAtDistance * aspect;

    // or

    var box = geometry.boundingBox;
    var meshHeight = box.max.y - box.min.y;
    camera.fov = 2 * Math.atan(meshHeight / (2 * (camera.position.z - mesh.position.z))) * (180 / Math.PI);
    camera.aspect = width / height;
    let dist = camera.position.z - mesh.position.z;
    let height = ... // desired height to fit
    camera.fov = 2 * Math.atan(height / (2 * dist)) * (180 / Math.PI);
    camera.updateProjectionMatrix();
  4. @ayamflow ayamflow revised this gist Jul 13, 2017. 2 changed files with 15 additions and 7 deletions.
    15 changes: 15 additions & 0 deletions gistfile1.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,15 @@
    var cameraZ = camera.position.z;
    var planeZ = 5;
    var distance = cameraZ — planeZ;
    var aspect = viewWidth / viewHeight;
    var vFov = camera.fov * Math.PI / 180;
    var planeHeightAtDistance = 2 * Math.tan(vFov / 2) * distance;
    var planeWidthAtDistance = planeHeightAtDistance * aspect;

    // or

    var box = geometry.boundingBox;
    var meshHeight = box.max.y - box.min.y;
    camera.fov = 2 * Math.atan(meshHeight / (2 * (camera.position.z - mesh.position.z))) * (180 / Math.PI);
    camera.aspect = width / height;
    camera.updateProjectionMatrix();
    7 changes: 0 additions & 7 deletions gistfile1.txt
    View file
    Original file line number Diff line number Diff line change
    @@ -1,7 +0,0 @@
    var cameraZ = camera.position.z;
    var planeZ = 5;
    var distance = cameraZ — planeZ;
    var aspect = viewWidth / viewHeight;
    var vFov = camera.fov * Math.PI / 180;
    var planeHeightAtDistance = 2 * Math.tan(vFov / 2) * distance;
    var planeWidthAtDistance = planeHeightAtDistance * aspect;
  5. @ayamflow ayamflow created this gist Apr 20, 2017.
    7 changes: 7 additions & 0 deletions gistfile1.txt
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,7 @@
    var cameraZ = camera.position.z;
    var planeZ = 5;
    var distance = cameraZ — planeZ;
    var aspect = viewWidth / viewHeight;
    var vFov = camera.fov * Math.PI / 180;
    var planeHeightAtDistance = 2 * Math.tan(vFov / 2) * distance;
    var planeWidthAtDistance = planeHeightAtDistance * aspect;