@woosh/meep-engine/src/core/geom/3d/aabb/deserializeAABB3Encoded_v0.js

Pure JavaScript game engine. Fully featured and production ready.

/**
 *
 * @param {BinaryBuffer} buffer
 * @param {AABB3} box
 * @param {number} x0
 * @param {number} y0
 * @param {number} z0
 * @param {number} x1
 * @param {number} y1
 * @param {number} z1
 */
export function deserializeAABB3Encoded_v0(buffer, box, x0, y0, z0, x1, y1, z1) {
    const header = buffer.readUint8();

    //compute value ranges
    const xD = x1 - x0;
    const yD = y1 - y0;
    const zD = z1 - z0;


    let qx0;
    let qx1;

    let qy0;
    let qy1;

    let qz0;
    let qz1;

    if ((header & 1) === 0) {
        const _x0 = buffer.readUint16();
        qx0 = (_x0 / 65535) * xD + x0;
    } else {
        qx0 = x0;
    }

    if ((header & 2) === 0) {
        const _x1 = buffer.readUint16();
        qx1 = (_x1 / 65535) * xD + x0;
    } else {
        qx1 = x1;
    }

    if ((header & 4) === 0) {
        const _y0 = buffer.readUint16();
        qy0 = (_y0 / 65535) * yD + y0;
    } else {
        qy0 = y0;
    }

    if ((header & 8) === 0) {
        const _y1 = buffer.readUint16();
        qy1 = (_y1 / 65535) * yD + y0;
    } else {
        qy1 = y1;
    }

    if ((header & 16) === 0) {
        const _z0 = buffer.readUint16();
        qz0 = (_z0 / 65535) * zD + z0;
    } else {
        qz0 = z0;
    }

    if ((header & 32) === 0) {
        const _z1 = buffer.readUint16();
        qz1 = (_z1 / 65535) * zD + z0;
    } else {
        qz1 = z1;
    }

    box.setBounds(qx0, qy0, qz0, qx1, qy1, qz1);
}