/**
 * R3.D3.Pass
 * @param graphics R3.GraphicsRuntime
 * @param apiPass R3.D3.API.Pass
 * @property passType
 * @constructor
 */
R3.D3.Pass = function (
    graphics,
    apiPass
) {

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

    if (R3.Utils.UndefinedOrNull(apiPass)) {
        apiPass = {
            passType : R3.D3.API.Pass.PASS_TYPE_NONE
        }
    }

	R3.D3.API.Pass.call(
        this,
        apiPass.id,
        apiPass.name,
        apiPass.passType,
        apiPass.parentEntity,
        apiPass.renderToScreen
    );

    var linkedObjects = {};

    switch (this.passType) {
        case R3.D3.API.Pass.PASS_TYPE_RENDER:
        case R3.D3.API.Pass.PASS_TYPE_SSAO:
            linkedObjects.scene = R3.D3.Scene;
            linkedObjects.camera = R3.D3.Camera;
            break;
        default :
            break;
    }

    R3.Component.call(
        this,
        linkedObjects
    );
};

R3.D3.Pass.prototype = Object.create(R3.Component.prototype);
R3.D3.Pass.prototype.constructor = R3.D3.Pass;


/**
 * Create Pass instance
 * @returns {*}
 */
R3.D3.Pass.prototype.createInstance = function() {

    if (R3.Utils.UndefinedOrNull(this.instance)) {
        console.warn('no instance - call the child createInstance() first');
        return;
    }

    this.instance.renderToScreen = this.renderToScreen;

    R3.Component.prototype.createInstance.call(this);

};

/**
 * Update Pass instance
 */
R3.D3.Pass.prototype.updateInstance = function(property) {


    if (property === 'passType') {

        var componentType = R3.D3.API.Pass.GetComponentType(this.passType);

        this.replace(componentType);

        return;
    }

    if (property === 'renderToScreen') {
        this.instance.renderToScreen = this.renderToScreen;
    }

    R3.Component.prototype.updateInstance.call(this, property);
};

/**
 * Not all passes have setSize, but this is just a safety function in case someone calls setSize on a pass component
 * @param property
 */
R3.D3.Pass.prototype.setSize = function(property) {
};

/**
 * R3.D3.Pass to R3.D3.API.Pass
 * @returns {R3.D3.API.Pass}
 */
R3.D3.Pass.prototype.toApiObject = function() {

    var apiPass = new R3.D3.API.Pass(
        this.id,
        this.name,
        this.passType,
        R3.Utils.IdOrNull(this.parentEntity),
        this.renderToScreen
    );

    return apiPass;
};