/******************************************************************************
 * Spine Runtimes Software License v2.5
 *
 * Copyright (c) 2013-2016, Esoteric Software
 * All rights reserved.
 *
 * You are granted a perpetual, non-exclusive, non-sublicensable, and
 * non-transferable license to use, install, execute, and perform the Spine
 * Runtimes software and derivative works solely for personal or internal
 * use. Without the written permission of Esoteric Software (see Section 2 of
 * the Spine Software License Agreement), you may not (a) modify, translate,
 * adapt, or develop new applications using the Spine Runtimes or otherwise
 * create derivative works or improvements of the Spine Runtimes 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 SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, BUSINESS INTERRUPTION, OR LOSS OF
 * USE, DATA, OR PROFITS) 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.
 *****************************************************************************/

module spine {
	export class Slot {
		data: SlotData;
		bone: Bone;
		color: Color;
		private attachment: Attachment;
		private attachmentTime: number;
		attachmentVertices = new Array<number>();

		constructor (data: SlotData, bone: Bone) {
			if (data == null) throw new Error("data cannot be null.");
			if (bone == null) throw new Error("bone cannot be null.");
			this.data = data;
			this.bone = bone;
			this.color = new Color();
			this.setToSetupPose();
		}

		/** @return May be null. */
		getAttachment (): Attachment {
			return this.attachment;
		}

		/** Sets the attachment and if it changed, resets {@link #getAttachmentTime()} and clears {@link #getAttachmentVertices()}.
		 * @param attachment May be null. */
		setAttachment (attachment: Attachment) {
			if (this.attachment == attachment) return;
			this.attachment = attachment;
			this.attachmentTime = this.bone.skeleton.time;
			this.attachmentVertices.length = 0;
		}

		setAttachmentTime (time: number) {
			this.attachmentTime = this.bone.skeleton.time - time;
		}

		/** Returns the time since the attachment was set. */
		getAttachmentTime (): number {
			return this.bone.skeleton.time - this.attachmentTime;
		}

		setToSetupPose () {
			this.color.setFromColor(this.data.color);
			if (this.data.attachmentName == null)
				this.attachment = null;
			else {
				this.attachment = null;
				this.setAttachment(this.bone.skeleton.getAttachment(this.data.index, this.data.attachmentName));
			}
		}
	}
}