/******************************************************************************
 * Spine Runtimes Software License
 * Version 2
 * 
 * Copyright (c) 2013, Esoteric Software
 * All rights reserved.
 * 
 * You are granted a perpetual, non-exclusive, non-sublicensable and
 * non-transferable license to install, execute and perform the Spine Runtimes
 * Software (the "Software") solely for internal use. Without the written
 * permission of Esoteric Software, you may not (a) modify, translate, adapt or
 * otherwise create derivative works, improvements of the Software or develop
 * new applications using the Software or (b) remove, delete, alter or obscure
 * any trademarks or any copyright, trademark, patent or other intellectual
 * property or proprietary rights notices on or in the Software, including
 * any copy thereof. Redistributions in binary or source form must include
 * this license and terms. THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTARE BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/

function SpriteBatch (draw2D) {
	this.draw2D = draw2D;
	this.buffer = [];
}
SpriteBatch.prototype = {
	count: 0,
	texture: null,
	blendMode: null,
	begin: function (blendMode, sortMode) {
		this.blendMode = blendMode;
		this.draw2D.begin(blendMode, sortMode);
	},
	add: function (texture, x1, y1, x2, y2, x3, y3, x4, y4, r, g, b, a, u1, v1, u2, v2) {
		if (this.texture && this.texture != texture) this.flush();
		this.texture = texture;
		var index = this.count++ * 16;
		var buffer = this.buffer;
		buffer[index++] = x1;
		buffer[index++] = y1;
		buffer[index++] = x2;
		buffer[index++] = y2;
		buffer[index++] = x3;
		buffer[index++] = y3;
		buffer[index++] = x4;
		buffer[index++] = y4;
		buffer[index++] = r;
		buffer[index++] = g;
		buffer[index++] = b;
		buffer[index++] = a;
		buffer[index++] = u1;
		buffer[index++] = v1;
		buffer[index++] = u2;
		buffer[index] = v2;
	},
	flush: function () {
		if (!this.texture) return;
		this.draw2D.drawRaw(this.texture, this.buffer, this.count, 0);
		this.texture = null;
		this.count = 0;
	},
	end: function () {
		this.flush();
		this.draw2D.end();
	}
};