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how can i convert polarAngle, aziumthalAngle, and distance to vector3.

Home Forums Programming how can i convert polarAngle, aziumthalAngle, and distance to vector3.

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  • #35864

    Hi, I need your help.
    I know that i can get polarAngle, aziumthalAngle from app.controls objects.

    I wanna vector3 values from polarAngle, aziumthalAngle, and distance between orbitCamera’s position and targetPoint’s position to use control.tween method. Also I am not sure whether I exactly calculated the distance though.


    #Get Distance
    const dx = camera.position.x – targetPoint.x;
    const dy = camera.position.y – targetPoint.y;
    const dz = camera.position.z – targetPoint.z;
    const distance = Math.sqrt(Math.pow(dx, 2) + Math.pow(dy, 2) + Math.pow(dz, 2));

    So my point is how can i convert polarAngle, aziumthalAngle, and distance to vector3. It would be very helpful if you let me know how to do that.

    Many thanks.

    #35941
    Yuri KovelenovYuri Kovelenov
    Developer

    Hi,

    why do you need vector3 values for tweening? you can tween scalar values as well.

    3D Verger, the CEO
    LinkedIn | FB | Twitter | VK | 新浪微博

    #35993

    Hi,

    As you can see the screenshot i attached, in the document it shows that i need to get vector3 value for tweening.

    Unfortunately, I’m not familiar with the scalar value.😢

    {x: number, y: number, z: number} <- Is that scalar value?

    For your understanding, I write down what i want to do with the position variable’s value.

    <input id=”polarAngle”>
    <input id=”aziumthalAngle”>
    <input id=”distance”>
    <button onclick=”tweenViewClick”>Tween Viewer<button>

    function tweenViewClick() {
    const polar = document.getElementById(‘polarAngle’);
    const aziumthalAngle = document.getElementById(‘aziumthalAngle’);
    const distance = document.getElementById(‘distance’);

    // … some logic … how to..

    const postion = {x:.. , y:.., z:.. } // Calculated polarAngle, aziumthalAngle, distance.

    app.controls.tween(postion, targetPosition);
    }

    I want to know x, y, and z value by calculating polarAngle, aziumthalAngle, and distance…😢

    Attachments:
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    #35996
    Avatarderekwang0605
    Licensee

    I just used below it works ok.
    tweenCamera([30, 30, 10], [0, 0, 0], 10, function() {}, 1);

    #36007

    Hi,

    You might find this method useful: Vector3.setFromSphericalCoords(radius, phi, theta), where phi is the polar angle and theta is aziumthal.

    Co-founder and lead developer at Soft8Soft.

    #36116

    Thank to you i figured it out!

    const vector3 = new v3d.Vector3();
    const position = vector3.setFromSphericalCoords(
    distance,
    controls.getPolarAngle(),
    controls.getAzimuthalAngle()
    );

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