@esotericsoftware/spine-core
Version:
The official Spine Runtimes for the web.
100 lines • 14.5 kB
JavaScript
/******************************************************************************
* Spine Runtimes License Agreement
* Last updated April 5, 2025. Replaces all prior versions.
*
* Copyright (c) 2013-2025, Esoteric Software LLC
*
* Integration of the Spine Runtimes into software or otherwise creating
* derivative works of the Spine Runtimes is permitted under the terms and
* conditions of Section 2 of the Spine Editor License Agreement:
* http://esotericsoftware.com/spine-editor-license
*
* Otherwise, it is permitted to integrate the Spine Runtimes into software
* or otherwise create derivative works of the Spine Runtimes (collectively,
* "Products"), provided that each user of the Products must obtain their own
* Spine Editor license and redistribution of the Products in any form must
* include this license and copyright notice.
*
* THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "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 LLC 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
* THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
import { VertexAttachment } from "./attachments/Attachment.js";
import { Color } from "./Utils.js";
/** Stores a slot's current pose. Slots organize attachments for {@link Skeleton#drawOrder} purposes and provide a place to store
* state for an attachment. State cannot be stored in an attachment itself because attachments are stateless and may be shared
* across multiple skeletons. */
export class Slot {
/** The slot's setup pose data. */
data;
/** The bone this slot belongs to. */
bone;
/** The color used to tint the slot's attachment. If {@link #getDarkColor()} is set, this is used as the light color for two
* color tinting. */
color;
/** The dark color used to tint the slot's attachment for two color tinting, or null if two color tinting is not used. The dark
* color's alpha is not used. */
darkColor = null;
attachment = null;
attachmentState = 0;
/** The index of the texture region to display when the slot's attachment has a {@link Sequence}. -1 represents the
* {@link Sequence#getSetupIndex()}. */
sequenceIndex = -1;
/** Values to deform the slot's attachment. For an unweighted mesh, the entries are local positions for each vertex. For a
* weighted mesh, the entries are an offset for each vertex which will be added to the mesh's local vertex positions.
*
* See {@link VertexAttachment#computeWorldVertices()} and {@link DeformTimeline}. */
deform = new Array();
constructor(data, bone) {
if (!data)
throw new Error("data cannot be null.");
if (!bone)
throw new Error("bone cannot be null.");
this.data = data;
this.bone = bone;
this.color = new Color();
this.darkColor = !data.darkColor ? null : new Color();
this.setToSetupPose();
}
/** The skeleton this slot belongs to. */
getSkeleton() {
return this.bone.skeleton;
}
/** The current attachment for the slot, or null if the slot has no attachment. */
getAttachment() {
return this.attachment;
}
/** Sets the slot's attachment and, if the attachment changed, resets {@link #sequenceIndex} and clears the {@link #deform}.
* The deform is not cleared if the old attachment has the same {@link VertexAttachment#getTimelineAttachment()} as the
* specified attachment. */
setAttachment(attachment) {
if (this.attachment == attachment)
return;
if (!(attachment instanceof VertexAttachment) || !(this.attachment instanceof VertexAttachment)
|| attachment.timelineAttachment != this.attachment.timelineAttachment) {
this.deform.length = 0;
}
this.attachment = attachment;
this.sequenceIndex = -1;
}
/** Sets this slot to the setup pose. */
setToSetupPose() {
this.color.setFromColor(this.data.color);
if (this.darkColor)
this.darkColor.setFromColor(this.data.darkColor);
if (!this.data.attachmentName)
this.attachment = null;
else {
this.attachment = null;
this.setAttachment(this.bone.skeleton.getAttachment(this.data.index, this.data.attachmentName));
}
}
}
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Replaces all prior versions.\n *\n * Copyright (c) 2013-2025, Esoteric Software LLC\n *\n * Integration of the Spine Runtimes into software or otherwise creating\n * derivative works of the Spine Runtimes is permitted under the terms and\n * conditions of Section 2 of the Spine Editor License Agreement:\n * http://esotericsoftware.com/spine-editor-license\n *\n * Otherwise, it is permitted to integrate the Spine Runtimes into software\n * or otherwise create derivative works of the Spine Runtimes (collectively,\n * \"Products\"), provided that each user of the Products must obtain their own\n * Spine Editor license and redistribution of the Products in any form must\n * include this license and copyright notice.\n *\n * THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC \"AS IS\" AND ANY\n * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\n * DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY\n * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\n * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,\n * BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND\n * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF\n * THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n *****************************************************************************/\n\nimport { Attachment, VertexAttachment } from \"./attachments/Attachment.js\";\nimport { Bone } from \"./Bone.js\";\nimport { Skeleton } from \"./Skeleton.js\";\nimport { SlotData } from \"./SlotData.js\";\nimport { Color } from \"./Utils.js\";\n\n/** Stores a slot's current pose. Slots organize attachments for {@link Skeleton#drawOrder} purposes and provide a place to store\n * state for an attachment. State cannot be stored in an attachment itself because attachments are stateless and may be shared\n * across multiple skeletons. */\nexport class Slot {\n\t/** The slot's setup pose data. */\n\tdata: SlotData;\n\n\t/** The bone this slot belongs to. */\n\tbone: Bone;\n\n\t/** The color used to tint the slot's attachment. If {@link #getDarkColor()} is set, this is used as the light color for two\n\t * color tinting. */\n\tcolor: Color;\n\n\t/** The dark color used to tint the slot's attachment for two color tinting, or null if two color tinting is not used. The dark\n\t * color's alpha is not used. */\n\tdarkColor: Color | null = null;\n\n\tattachment: Attachment | null = null;\n\n\tattachmentState: number = 0;\n\n\t/** The index of the texture region to display when the slot's attachment has a {@link Sequence}. -1 represents the\n\t * {@link Sequence#getSetupIndex()}. */\n\tsequenceIndex: number = -1;\n\n\t/** Values to deform the slot's attachment. For an unweighted mesh, the entries are local positions for each vertex. For a\n\t * weighted mesh, the entries are an offset for each vertex which will be added to the mesh's local vertex positions.\n\t *\n\t * See {@link VertexAttachment#computeWorldVertices()} and {@link DeformTimeline}. */\n\tdeform = new Array<number>();\n\n\tconstructor (data: SlotData, bone: Bone) {\n\t\tif (!data) throw new Error(\"data cannot be null.\");\n\t\tif (!bone) throw new Error(\"bone cannot be null.\");\n\t\tthis.data = data;\n\t\tthis.bone = bone;\n\t\tthis.color = new Color();\n\t\tthis.darkColor = !data.darkColor ? null : new Color();\n\t\tthis.setToSetupPose();\n\t}\n\n\t/** The skeleton this slot belongs to. */\n\tgetSkeleton (): Skeleton {\n\t\treturn this.bone.skeleton;\n\t}\n\n\t/** The current attachment for the slot, or null if the slot has no attachment. */\n\tgetAttachment (): Attachment | null {\n\t\treturn this.attachment;\n\t}\n\n\t/** Sets the slot's attachment and, if the attachment changed, resets {@link #sequenceIndex} and clears the {@link #deform}.\n\t * The deform is not cleared if the old attachment has the same {@link VertexAttachment#getTimelineAttachment()} as the\n\t * specified attachment. */\n\tsetAttachment (attachment: Attachment | null) {\n\t\tif (this.attachment == attachment) return;\n\t\tif (!(attachment instanceof VertexAttachment) || !(this.attachment instanceof VertexAttachment)\n\t\t\t|| (<VertexAttachment>attachment).timelineAttachment != (<VertexAttachment>this.attachment).timelineAttachment) {\n\t\t\tthis.deform.length = 0;\n\t\t}\n\t\tthis.attachment = attachment;\n\t\tthis.sequenceIndex = -1;\n\t}\n\n\t/** Sets this slot to the setup pose. */\n\tsetToSetupPose () {\n\t\tthis.color.setFromColor(this.data.color);\n\t\tif (this.darkColor) this.darkColor.setFromColor(this.data.darkColor!);\n\t\tif (!this.data.attachmentName)\n\t\t\tthis.attachment = null;\n\t\telse {\n\t\t\tthis.attachment = null;\n\t\t\tthis.setAttachment(this.bone.skeleton.getAttachment(this.data.index, this.data.attachmentName));\n\t\t}\n\t}\n}\n"]}