/**
 * R3.D3.Geometry.Buffer.Cylinder
 * @param graphics R3.Runtime.Graphics
 * @param apiGeometryBufferCylinder
 * @constructor
 */
R3.D3.Geometry.Buffer.Cylinder = function(
	graphics,
	apiGeometryBufferCylinder
) {

    this.graphics = graphics;
    this.graphics.isNotThreeThrow();

    if (R3.Utils.UndefinedOrNull(apiGeometryBufferCylinder)) {
        apiGeometryBufferCylinder = {
            geometryType : R3.D3.API.Geometry.GEOMETRY_TYPE_BUFFER_CYLINDER
        };
    }

    R3.D3.API.Geometry.Buffer.Cylinder.call(
        this,
        apiGeometryBufferCylinder,
        apiGeometryBufferCylinder.radiusTop,
        apiGeometryBufferCylinder.radiusBottom,
        apiGeometryBufferCylinder.height,
        apiGeometryBufferCylinder.radialSegments,
        apiGeometryBufferCylinder.heightSegments,
        apiGeometryBufferCylinder.openEnded,
        apiGeometryBufferCylinder.thetaStart,
        apiGeometryBufferCylinder.thetaLength
    );

    R3.D3.Geometry.Buffer.call(
        this,
        this.graphics,
        apiGeometryBufferCylinder
    );
    
};

R3.D3.Geometry.Buffer.Cylinder.prototype = Object.create(R3.D3.Geometry.Buffer.prototype);
R3.D3.Geometry.Buffer.Cylinder.prototype.constructor = R3.D3.Geometry.Buffer.Cylinder;

/**
 * Creates a light instance
 * @returns {*}
 */
R3.D3.Geometry.Buffer.Cylinder.prototype.createInstance = function() {

    this.instance = new THREE.CylinderBufferGeometry(
        this.radiusTop,
        this.radiusBottom,
        this.height,
        this.radialSegments,
        this.heightSegments,
        this.openEnded,
        this.thetaStart,
        this.thetaLength
    );

    this.computeVertexNormals();

    R3.D3.Geometry.Buffer.prototype.createInstance.call(this);
};

/**
 * Updates the instance with the current state
 */
R3.D3.Geometry.Buffer.Cylinder.prototype.updateInstance = function(property) {

    if (
        property === 'radiusTop' ||
        property === 'radiusBottom' ||
        property === 'height' ||
        property === 'radialSegments' ||
        property === 'heightSegments' ||
        property === 'openEnded' ||
        property === 'thetaStart' ||
        property === 'thetaLength'
    ) {
        this.instance.dispose();
        this.createInstance();

        if (this.parentMesh && this.parentMesh.instance) {
            this.parentMesh.instance.geometry = this.instance;

            if (this.parentMesh.helper) {
                this.parentMesh.removeHelper();
                this.parentMesh.createHelper();
            }
        }

        return;
    }

    R3.D3.Geometry.Buffer.prototype.updateInstance.call(this, property);
};

/**
 * Converts a R3.D3.Geometry.Buffer.Cylinder to a R3.D3.API.Geometry.Buffer.Cylinder
 * @returns {R3.D3.API.Geometry.Buffer}
 */
R3.D3.Geometry.Buffer.Cylinder.prototype.toApiObject = function() {

    var apiBufferGeometry = R3.D3.Geometry.Buffer.prototype.toApiObject.call(this);

    var apiGeometryBufferCylinder = new R3.D3.API.Geometry.Buffer.Cylinder(
        apiBufferGeometry,
        this.radiusTop,
        this.radiusBottom,
        this.height,
        this.radialSegments,
        this.heightSegments,
        this.openEnded,
        this.thetaStart,
        this.thetaLength
    );

    return apiGeometryBufferCylinder;
};