@esotericsoftware/spine-core
Version:
The official Spine Runtimes for the web.
190 lines • 31.5 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 { TextureAtlasRegion } from "../TextureAtlas.js";
import { Color, Utils } from "../Utils.js";
import { VertexAttachment } from "./Attachment.js";
/** An attachment that displays a textured mesh. A mesh has hull vertices and internal vertices within the hull. Holes are not
* supported. Each vertex has UVs (texture coordinates) and triangles are used to map an image on to the mesh.
*
* See [Mesh attachments](http://esotericsoftware.com/spine-meshes) in the Spine User Guide. */
export class MeshAttachment extends VertexAttachment {
region = null;
/** The name of the texture region for this attachment. */
path;
/** The UV pair for each vertex, normalized within the texture region. */
regionUVs = [];
/** The UV pair for each vertex, normalized within the entire texture.
*
* See {@link #updateUVs}. */
uvs = [];
/** Triplets of vertex indices which describe the mesh's triangulation. */
triangles = [];
/** The color to tint the mesh. */
color = new Color(1, 1, 1, 1);
/** The width of the mesh's image. Available only when nonessential data was exported. */
width = 0;
/** The height of the mesh's image. Available only when nonessential data was exported. */
height = 0;
/** The number of entries at the beginning of {@link #vertices} that make up the mesh hull. */
hullLength = 0;
/** Vertex index pairs describing edges for controling triangulation. Mesh triangles will never cross edges. Only available if
* nonessential data was exported. Triangulation is not performed at runtime. */
edges = [];
parentMesh = null;
sequence = null;
tempColor = new Color(0, 0, 0, 0);
constructor(name, path) {
super(name);
this.path = path;
}
/** Calculates {@link #uvs} using the {@link #regionUVs} and region. Must be called if the region, the region's properties, or
* the {@link #regionUVs} are changed. */
updateRegion() {
if (!this.region)
throw new Error("Region not set.");
let regionUVs = this.regionUVs;
if (!this.uvs || this.uvs.length != regionUVs.length)
this.uvs = Utils.newFloatArray(regionUVs.length);
let uvs = this.uvs;
let n = this.uvs.length;
let u = this.region.u, v = this.region.v, width = 0, height = 0;
if (this.region instanceof TextureAtlasRegion) {
let region = this.region, page = region.page;
let textureWidth = page.width, textureHeight = page.height;
switch (region.degrees) {
case 90:
u -= (region.originalHeight - region.offsetY - region.height) / textureWidth;
v -= (region.originalWidth - region.offsetX - region.width) / textureHeight;
width = region.originalHeight / textureWidth;
height = region.originalWidth / textureHeight;
for (let i = 0; i < n; i += 2) {
uvs[i] = u + regionUVs[i + 1] * width;
uvs[i + 1] = v + (1 - regionUVs[i]) * height;
}
return;
case 180:
u -= (region.originalWidth - region.offsetX - region.width) / textureWidth;
v -= region.offsetY / textureHeight;
width = region.originalWidth / textureWidth;
height = region.originalHeight / textureHeight;
for (let i = 0; i < n; i += 2) {
uvs[i] = u + (1 - regionUVs[i]) * width;
uvs[i + 1] = v + (1 - regionUVs[i + 1]) * height;
}
return;
case 270:
u -= region.offsetY / textureWidth;
v -= region.offsetX / textureHeight;
width = region.originalHeight / textureWidth;
height = region.originalWidth / textureHeight;
for (let i = 0; i < n; i += 2) {
uvs[i] = u + (1 - regionUVs[i + 1]) * width;
uvs[i + 1] = v + regionUVs[i] * height;
}
return;
}
u -= region.offsetX / textureWidth;
v -= (region.originalHeight - region.offsetY - region.height) / textureHeight;
width = region.originalWidth / textureWidth;
height = region.originalHeight / textureHeight;
}
else if (!this.region) {
u = v = 0;
width = height = 1;
}
else {
width = this.region.u2 - u;
height = this.region.v2 - v;
}
for (let i = 0; i < n; i += 2) {
uvs[i] = u + regionUVs[i] * width;
uvs[i + 1] = v + regionUVs[i + 1] * height;
}
}
/** The parent mesh if this is a linked mesh, else null. A linked mesh shares the {@link #bones}, {@link #vertices},
* {@link #regionUVs}, {@link #triangles}, {@link #hullLength}, {@link #edges}, {@link #width}, and {@link #height} with the
* parent mesh, but may have a different {@link #name} or {@link #path} (and therefore a different texture). */
getParentMesh() {
return this.parentMesh;
}
/** @param parentMesh May be null. */
setParentMesh(parentMesh) {
this.parentMesh = parentMesh;
if (parentMesh) {
this.bones = parentMesh.bones;
this.vertices = parentMesh.vertices;
this.worldVerticesLength = parentMesh.worldVerticesLength;
this.regionUVs = parentMesh.regionUVs;
this.triangles = parentMesh.triangles;
this.hullLength = parentMesh.hullLength;
this.worldVerticesLength = parentMesh.worldVerticesLength;
}
}
copy() {
if (this.parentMesh)
return this.newLinkedMesh();
let copy = new MeshAttachment(this.name, this.path);
copy.region = this.region;
copy.color.setFromColor(this.color);
this.copyTo(copy);
copy.regionUVs = new Array(this.regionUVs.length);
Utils.arrayCopy(this.regionUVs, 0, copy.regionUVs, 0, this.regionUVs.length);
copy.uvs = this.uvs instanceof Float32Array ? Utils.newFloatArray(this.uvs.length) : new Array(this.uvs.length);
Utils.arrayCopy(this.uvs, 0, copy.uvs, 0, this.uvs.length);
copy.triangles = new Array(this.triangles.length);
Utils.arrayCopy(this.triangles, 0, copy.triangles, 0, this.triangles.length);
copy.hullLength = this.hullLength;
copy.sequence = this.sequence != null ? this.sequence.copy() : null;
// Nonessential.
if (this.edges) {
copy.edges = new Array(this.edges.length);
Utils.arrayCopy(this.edges, 0, copy.edges, 0, this.edges.length);
}
copy.width = this.width;
copy.height = this.height;
return copy;
}
computeWorldVertices(slot, start, count, worldVertices, offset, stride) {
if (this.sequence != null)
this.sequence.apply(slot, this);
super.computeWorldVertices(slot, start, count, worldVertices, offset, stride);
}
/** Returns a new mesh with the {@link #parentMesh} set to this mesh's parent mesh, if any, else to this mesh. **/
newLinkedMesh() {
let copy = new MeshAttachment(this.name, this.path);
copy.region = this.region;
copy.color.setFromColor(this.color);
copy.timelineAttachment = this.timelineAttachment;
copy.setParentMesh(this.parentMesh ? this.parentMesh : this);
if (copy.region != null)
copy.updateRegion();
return copy;
}
}
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* Spine Runtimes License Agreement\n * Last updated April 5, 2025. 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 { TextureRegion } from \"../Texture.js\";\nimport { TextureAtlasRegion } from \"../TextureAtlas.js\";\nimport { Color, NumberArrayLike, Utils } from \"../Utils.js\";\nimport { VertexAttachment, Attachment } from \"./Attachment.js\";\nimport { HasTextureRegion } from \"./HasTextureRegion.js\";\nimport { Sequence } from \"./Sequence.js\";\nimport { Slot } from \"../Slot.js\";\n\n/** An attachment that displays a textured mesh. A mesh has hull vertices and internal vertices within the hull. Holes are not\n * supported. Each vertex has UVs (texture coordinates) and triangles are used to map an image on to the mesh.\n *\n * See [Mesh attachments](http://esotericsoftware.com/spine-meshes) in the Spine User Guide. */\nexport class MeshAttachment extends VertexAttachment implements HasTextureRegion {\n\tregion: TextureRegion | null = null;\n\n\t/** The name of the texture region for this attachment. */\n\tpath: string;\n\n\t/** The UV pair for each vertex, normalized within the texture region. */\n\tregionUVs: NumberArrayLike = [];\n\n\t/** The UV pair for each vertex, normalized within the entire texture.\n\t *\n\t * See {@link #updateUVs}. */\n\tuvs: NumberArrayLike = [];\n\n\t/** Triplets of vertex indices which describe the mesh's triangulation. */\n\ttriangles: Array<number> = [];\n\n\t/** The color to tint the mesh. */\n\tcolor = new Color(1, 1, 1, 1);\n\n\t/** The width of the mesh's image. Available only when nonessential data was exported. */\n\twidth: number = 0;\n\n\t/** The height of the mesh's image. Available only when nonessential data was exported. */\n\theight: number = 0;\n\n\t/** The number of entries at the beginning of {@link #vertices} that make up the mesh hull. */\n\thullLength: number = 0;\n\n\t/** Vertex index pairs describing edges for controling triangulation. Mesh triangles will never cross edges. Only available if\n\t * nonessential data was exported. Triangulation is not performed at runtime. */\n\tedges: Array<number> = [];\n\n\tprivate parentMesh: MeshAttachment | null = null;\n\n\tsequence: Sequence | null = null;\n\n\ttempColor = new Color(0, 0, 0, 0);\n\n\tconstructor (name: string, path: string) {\n\t\tsuper(name);\n\t\tthis.path = path;\n\t}\n\n\t/** Calculates {@link #uvs} using the {@link #regionUVs} and region. Must be called if the region, the region's properties, or\n\t * the {@link #regionUVs} are changed. */\n\tupdateRegion () {\n\t\tif (!this.region) throw new Error(\"Region not set.\");\n\t\tlet regionUVs = this.regionUVs;\n\t\tif (!this.uvs || this.uvs.length != regionUVs.length) this.uvs = Utils.newFloatArray(regionUVs.length);\n\t\tlet uvs = this.uvs;\n\t\tlet n = this.uvs.length;\n\t\tlet u = this.region.u, v = this.region.v, width = 0, height = 0;\n\t\tif (this.region instanceof TextureAtlasRegion) {\n\t\t\tlet region = this.region, page = region.page;\n\t\t\tlet textureWidth = page.width, textureHeight = page.height;\n\t\t\tswitch (region.degrees) {\n\t\t\t\tcase 90:\n\t\t\t\t\tu -= (region.originalHeight - region.offsetY - region.height) / textureWidth;\n\t\t\t\t\tv -= (region.originalWidth - region.offsetX - region.width) / textureHeight;\n\t\t\t\t\twidth = region.originalHeight / textureWidth;\n\t\t\t\t\theight = region.originalWidth / textureHeight;\n\t\t\t\t\tfor (let i = 0; i < n; i += 2) {\n\t\t\t\t\t\tuvs[i] = u + regionUVs[i + 1] * width;\n\t\t\t\t\t\tuvs[i + 1] = v + (1 - regionUVs[i]) * height;\n\t\t\t\t\t}\n\t\t\t\t\treturn;\n\t\t\t\tcase 180:\n\t\t\t\t\tu -= (region.originalWidth - region.offsetX - region.width) / textureWidth;\n\t\t\t\t\tv -= region.offsetY / textureHeight;\n\t\t\t\t\twidth = region.originalWidth / textureWidth;\n\t\t\t\t\theight = region.originalHeight / textureHeight;\n\t\t\t\t\tfor (let i = 0; i < n; i += 2) {\n\t\t\t\t\t\tuvs[i] = u + (1 - regionUVs[i]) * width;\n\t\t\t\t\t\tuvs[i + 1] = v + (1 - regionUVs[i + 1]) * height;\n\t\t\t\t\t}\n\t\t\t\t\treturn;\n\t\t\t\tcase 270:\n\t\t\t\t\tu -= region.offsetY / textureWidth;\n\t\t\t\t\tv -= region.offsetX / textureHeight;\n\t\t\t\t\twidth = region.originalHeight / textureWidth;\n\t\t\t\t\theight = region.originalWidth / textureHeight;\n\t\t\t\t\tfor (let i = 0; i < n; i += 2) {\n\t\t\t\t\t\tuvs[i] = u + (1 - regionUVs[i + 1]) * width;\n\t\t\t\t\t\tuvs[i + 1] = v + regionUVs[i] * height;\n\t\t\t\t\t}\n\t\t\t\t\treturn;\n\t\t\t}\n\t\t\tu -= region.offsetX / textureWidth;\n\t\t\tv -= (region.originalHeight - region.offsetY - region.height) / textureHeight;\n\t\t\twidth = region.originalWidth / textureWidth;\n\t\t\theight = region.originalHeight / textureHeight;\n\t\t} else if (!this.region) {\n\t\t\tu = v = 0;\n\t\t\twidth = height = 1;\n\t\t} else {\n\t\t\twidth = this.region.u2 - u;\n\t\t\theight = this.region.v2 - v;\n\t\t}\n\n\t\tfor (let i = 0; i < n; i += 2) {\n\t\t\tuvs[i] = u + regionUVs[i] * width;\n\t\t\tuvs[i + 1] = v + regionUVs[i + 1] * height;\n\t\t}\n\t}\n\n\t/** The parent mesh if this is a linked mesh, else null. A linked mesh shares the {@link #bones}, {@link #vertices},\n\t * {@link #regionUVs}, {@link #triangles}, {@link #hullLength}, {@link #edges}, {@link #width}, and {@link #height} with the\n\t * parent mesh, but may have a different {@link #name} or {@link #path} (and therefore a different texture). */\n\tgetParentMesh () {\n\t\treturn this.parentMesh;\n\t}\n\n\t/** @param parentMesh May be null. */\n\tsetParentMesh (parentMesh: MeshAttachment) {\n\t\tthis.parentMesh = parentMesh;\n\t\tif (parentMesh) {\n\t\t\tthis.bones = parentMesh.bones;\n\t\t\tthis.vertices = parentMesh.vertices;\n\t\t\tthis.worldVerticesLength = parentMesh.worldVerticesLength;\n\t\t\tthis.regionUVs = parentMesh.regionUVs;\n\t\t\tthis.triangles = parentMesh.triangles;\n\t\t\tthis.hullLength = parentMesh.hullLength;\n\t\t\tthis.worldVerticesLength = parentMesh.worldVerticesLength\n\t\t}\n\t}\n\n\tcopy (): Attachment {\n\t\tif (this.parentMesh) return this.newLinkedMesh();\n\n\t\tlet copy = new MeshAttachment(this.name, this.path);\n\t\tcopy.region = this.region;\n\t\tcopy.color.setFromColor(this.color);\n\n\t\tthis.copyTo(copy);\n\t\tcopy.regionUVs = new Array<number>(this.regionUVs.length);\n\t\tUtils.arrayCopy(this.regionUVs, 0, copy.regionUVs, 0, this.regionUVs.length);\n\t\tcopy.uvs = this.uvs instanceof Float32Array ? Utils.newFloatArray(this.uvs.length) : new Array<number>(this.uvs.length);\n\t\tUtils.arrayCopy(this.uvs, 0, copy.uvs, 0, this.uvs.length);\n\t\tcopy.triangles = new Array<number>(this.triangles.length);\n\t\tUtils.arrayCopy(this.triangles, 0, copy.triangles, 0, this.triangles.length);\n\t\tcopy.hullLength = this.hullLength;\n\n\t\tcopy.sequence = this.sequence != null ? this.sequence.copy() : null;\n\n\t\t// Nonessential.\n\t\tif (this.edges) {\n\t\t\tcopy.edges = new Array<number>(this.edges.length);\n\t\t\tUtils.arrayCopy(this.edges, 0, copy.edges, 0, this.edges.length);\n\t\t}\n\t\tcopy.width = this.width;\n\t\tcopy.height = this.height;\n\n\t\treturn copy;\n\t}\n\n\tcomputeWorldVertices (slot: Slot, start: number, count: number, worldVertices: NumberArrayLike, offset: number, stride: number) {\n\t\tif (this.sequence != null) this.sequence.apply(slot, this);\n\t\tsuper.computeWorldVertices(slot, start, count, worldVertices, offset, stride);\n\t}\n\n\t/** Returns a new mesh with the {@link #parentMesh} set to this mesh's parent mesh, if any, else to this mesh. **/\n\tnewLinkedMesh (): MeshAttachment {\n\t\tlet copy = new MeshAttachment(this.name, this.path);\n\t\tcopy.region = this.region;\n\t\tcopy.color.setFromColor(this.color);\n\t\tcopy.timelineAttachment = this.timelineAttachment;\n\t\tcopy.setParentMesh(this.parentMesh ? this.parentMesh : this);\n\t\tif (copy.region != null) copy.updateRegion();\n\t\treturn copy;\n\t}\n}\n"]}