const vertexPositionData = [];
        const normalData = [];
        const textureCoordData = [];
        for (let latNumber = 0; latNumber <= this.latitudeBands; latNumber++) {
            const theta = latNumber * Math.PI / this.latitudeBands;
            const sinTheta = Math.sin(theta);
            const cosTheta = Math.cos(theta);

            for (let longNumber = 0; longNumber <= this.longitudeBands; longNumber++) {
                const phi = longNumber * 2 * Math.PI / this.longitudeBands;
                const sinPhi = Math.sin(phi);
                const cosPhi = Math.cos(phi);

                const x = cosPhi * sinTheta;
                const y = sinPhi * sinTheta;
                const z = cosTheta;
                const u = 1 - (longNumber / this.longitudeBands);
                const v = 1 - (latNumber / this.latitudeBands);

                normalData.push(x);
                normalData.push(y);
                normalData.push(z);
                textureCoordData.push(u);
                textureCoordData.push(v);
                vertexPositionData.push(this.radius * x);
                vertexPositionData.push(this.radius * y);
                vertexPositionData.push(this.radius * z);
            }
        }

        const indexData = [];
        for (let latNumber = 0; latNumber < this.latitudeBands; latNumber++) {
            for (let longNumber = 0; longNumber < this.longitudeBands; longNumber++) {
                const first = (latNumber * (this.longitudeBands + 1)) + longNumber;
                const second = first + this.longitudeBands + 1;
                indexData.push(first);
                indexData.push(second);
                indexData.push(first + 1);

                indexData.push(second);
                indexData.push(second + 1);
                indexData.push(first + 1);
            }
        }