@pixi-spine/runtime-3.8
Version:
Pixi runtime for spine 3.8 models
277 lines (273 loc) • 9.49 kB
JavaScript
'use strict';
var base = require('@pixi-spine/base');
class TransformConstraint {
constructor(data, skeleton) {
this.rotateMix = 0;
this.translateMix = 0;
this.scaleMix = 0;
this.shearMix = 0;
this.temp = new base.Vector2();
this.active = false;
if (data == null)
throw new Error("data cannot be null.");
if (skeleton == null)
throw new Error("skeleton cannot be null.");
this.data = data;
this.rotateMix = data.rotateMix;
this.translateMix = data.translateMix;
this.scaleMix = data.scaleMix;
this.shearMix = data.shearMix;
this.bones = new Array();
for (let i = 0; i < data.bones.length; i++)
this.bones.push(skeleton.findBone(data.bones[i].name));
this.target = skeleton.findBone(data.target.name);
}
isActive() {
return this.active;
}
apply() {
this.update();
}
update() {
if (this.data.local) {
if (this.data.relative)
this.applyRelativeLocal();
else
this.applyAbsoluteLocal();
} else if (this.data.relative)
this.applyRelativeWorld();
else
this.applyAbsoluteWorld();
}
applyAbsoluteWorld() {
const rotateMix = this.rotateMix;
const translateMix = this.translateMix;
const scaleMix = this.scaleMix;
const shearMix = this.shearMix;
const target = this.target;
const targetMat = target.matrix;
const ta = targetMat.a;
const tb = targetMat.c;
const tc = targetMat.b;
const td = targetMat.d;
const degRadReflect = ta * td - tb * tc > 0 ? base.MathUtils.degRad : -base.MathUtils.degRad;
const offsetRotation = this.data.offsetRotation * degRadReflect;
const offsetShearY = this.data.offsetShearY * degRadReflect;
const bones = this.bones;
for (let i = 0, n = bones.length; i < n; i++) {
const bone = bones[i];
let modified = false;
const mat = bone.matrix;
if (rotateMix != 0) {
const a = mat.a;
const b = mat.c;
const c = mat.b;
const d = mat.d;
let r = Math.atan2(tc, ta) - Math.atan2(c, a) + offsetRotation;
if (r > base.MathUtils.PI)
r -= base.MathUtils.PI2;
else if (r < -base.MathUtils.PI)
r += base.MathUtils.PI2;
r *= rotateMix;
const cos = Math.cos(r);
const sin = Math.sin(r);
mat.a = cos * a - sin * c;
mat.c = cos * b - sin * d;
mat.b = sin * a + cos * c;
mat.d = sin * b + cos * d;
modified = true;
}
if (translateMix != 0) {
const temp = this.temp;
target.localToWorld(temp.set(this.data.offsetX, this.data.offsetY));
mat.tx += (temp.x - mat.tx) * translateMix;
mat.ty += (temp.y - mat.ty) * translateMix;
modified = true;
}
if (scaleMix > 0) {
let s = Math.sqrt(mat.a * mat.a + mat.b * mat.b);
let ts = Math.sqrt(ta * ta + tc * tc);
if (s > 1e-5)
s = (s + (ts - s + this.data.offsetScaleX) * scaleMix) / s;
mat.a *= s;
mat.b *= s;
s = Math.sqrt(mat.c * mat.c + mat.d * mat.d);
ts = Math.sqrt(tb * tb + td * td);
if (s > 1e-5)
s = (s + (ts - s + this.data.offsetScaleY) * scaleMix) / s;
mat.c *= s;
mat.d *= s;
modified = true;
}
if (shearMix > 0) {
const b = mat.c;
const d = mat.d;
const by = Math.atan2(d, b);
let r = Math.atan2(td, tb) - Math.atan2(tc, ta) - (by - Math.atan2(mat.b, mat.a));
if (r > base.MathUtils.PI)
r -= base.MathUtils.PI2;
else if (r < -base.MathUtils.PI)
r += base.MathUtils.PI2;
r = by + (r + offsetShearY) * shearMix;
const s = Math.sqrt(b * b + d * d);
mat.c = Math.cos(r) * s;
mat.d = Math.sin(r) * s;
modified = true;
}
if (modified)
bone.appliedValid = false;
}
}
applyRelativeWorld() {
const rotateMix = this.rotateMix;
const translateMix = this.translateMix;
const scaleMix = this.scaleMix;
const shearMix = this.shearMix;
const target = this.target;
const targetMat = target.matrix;
const ta = targetMat.a;
const tb = targetMat.c;
const tc = targetMat.b;
const td = targetMat.d;
const degRadReflect = ta * td - tb * tc > 0 ? base.MathUtils.degRad : -base.MathUtils.degRad;
const offsetRotation = this.data.offsetRotation * degRadReflect;
const offsetShearY = this.data.offsetShearY * degRadReflect;
const bones = this.bones;
for (let i = 0, n = bones.length; i < n; i++) {
const bone = bones[i];
let modified = false;
const mat = bone.matrix;
if (rotateMix != 0) {
const a = mat.a;
const b = mat.c;
const c = mat.b;
const d = mat.d;
let r = Math.atan2(tc, ta) + offsetRotation;
if (r > base.MathUtils.PI)
r -= base.MathUtils.PI2;
else if (r < -base.MathUtils.PI)
r += base.MathUtils.PI2;
r *= rotateMix;
const cos = Math.cos(r);
const sin = Math.sin(r);
mat.a = cos * a - sin * c;
mat.c = cos * b - sin * d;
mat.b = sin * a + cos * c;
mat.d = sin * b + cos * d;
modified = true;
}
if (translateMix != 0) {
const temp = this.temp;
target.localToWorld(temp.set(this.data.offsetX, this.data.offsetY));
mat.tx += temp.x * translateMix;
mat.ty += temp.y * translateMix;
modified = true;
}
if (scaleMix > 0) {
let s = (Math.sqrt(ta * ta + tc * tc) - 1 + this.data.offsetScaleX) * scaleMix + 1;
mat.a *= s;
mat.b *= s;
s = (Math.sqrt(tb * tb + td * td) - 1 + this.data.offsetScaleY) * scaleMix + 1;
mat.c *= s;
mat.d *= s;
modified = true;
}
if (shearMix > 0) {
let r = Math.atan2(td, tb) - Math.atan2(tc, ta);
if (r > base.MathUtils.PI)
r -= base.MathUtils.PI2;
else if (r < -base.MathUtils.PI)
r += base.MathUtils.PI2;
const b = mat.c;
const d = mat.d;
r = Math.atan2(d, b) + (r - base.MathUtils.PI / 2 + offsetShearY) * shearMix;
const s = Math.sqrt(b * b + d * d);
mat.c = Math.cos(r) * s;
mat.d = Math.sin(r) * s;
modified = true;
}
if (modified)
bone.appliedValid = false;
}
}
applyAbsoluteLocal() {
const rotateMix = this.rotateMix;
const translateMix = this.translateMix;
const scaleMix = this.scaleMix;
const shearMix = this.shearMix;
const target = this.target;
if (!target.appliedValid)
target.updateAppliedTransform();
const bones = this.bones;
for (let i = 0, n = bones.length; i < n; i++) {
const bone = bones[i];
if (!bone.appliedValid)
bone.updateAppliedTransform();
let rotation = bone.arotation;
if (rotateMix != 0) {
let r = target.arotation - rotation + this.data.offsetRotation;
r -= (16384 - (16384.499999999996 - r / 360 | 0)) * 360;
rotation += r * rotateMix;
}
let x = bone.ax;
let y = bone.ay;
if (translateMix != 0) {
x += (target.ax - x + this.data.offsetX) * translateMix;
y += (target.ay - y + this.data.offsetY) * translateMix;
}
let scaleX = bone.ascaleX;
let scaleY = bone.ascaleY;
if (scaleMix > 0) {
if (scaleX > 1e-5)
scaleX = (scaleX + (target.ascaleX - scaleX + this.data.offsetScaleX) * scaleMix) / scaleX;
if (scaleY > 1e-5)
scaleY = (scaleY + (target.ascaleY - scaleY + this.data.offsetScaleY) * scaleMix) / scaleY;
}
const shearY = bone.ashearY;
if (shearMix > 0) {
let r = target.ashearY - shearY + this.data.offsetShearY;
r -= (16384 - (16384.499999999996 - r / 360 | 0)) * 360;
bone.shearY += r * shearMix;
}
bone.updateWorldTransformWith(x, y, rotation, scaleX, scaleY, bone.ashearX, shearY);
}
}
applyRelativeLocal() {
const rotateMix = this.rotateMix;
const translateMix = this.translateMix;
const scaleMix = this.scaleMix;
const shearMix = this.shearMix;
const target = this.target;
if (!target.appliedValid)
target.updateAppliedTransform();
const bones = this.bones;
for (let i = 0, n = bones.length; i < n; i++) {
const bone = bones[i];
if (!bone.appliedValid)
bone.updateAppliedTransform();
let rotation = bone.arotation;
if (rotateMix != 0)
rotation += (target.arotation + this.data.offsetRotation) * rotateMix;
let x = bone.ax;
let y = bone.ay;
if (translateMix != 0) {
x += (target.ax + this.data.offsetX) * translateMix;
y += (target.ay + this.data.offsetY) * translateMix;
}
let scaleX = bone.ascaleX;
let scaleY = bone.ascaleY;
if (scaleMix > 0) {
if (scaleX > 1e-5)
scaleX *= (target.ascaleX - 1 + this.data.offsetScaleX) * scaleMix + 1;
if (scaleY > 1e-5)
scaleY *= (target.ascaleY - 1 + this.data.offsetScaleY) * scaleMix + 1;
}
let shearY = bone.ashearY;
if (shearMix > 0)
shearY += (target.ashearY + this.data.offsetShearY) * shearMix;
bone.updateWorldTransformWith(x, y, rotation, scaleX, scaleY, bone.ashearX, shearY);
}
}
}
exports.TransformConstraint = TransformConstraint;
//# sourceMappingURL=TransformConstraint.js.map