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285 lines
11 KiB
285 lines
11 KiB
2 years ago
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/******************************************************************************
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* Spine Runtimes Software License v2.5
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*
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* Copyright (c) 2013-2016, Esoteric Software
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* All rights reserved.
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*
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* You are granted a perpetual, non-exclusive, non-sublicensable, and
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* non-transferable license to use, install, execute, and perform the Spine
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* Runtimes software and derivative works solely for personal or internal
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* use. Without the written permission of Esoteric Software (see Section 2 of
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* the Spine Software License Agreement), you may not (a) modify, translate,
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* adapt, or develop new applications using the Spine Runtimes or otherwise
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* create derivative works or improvements of the Spine Runtimes or (b) remove,
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* delete, alter, or obscure any trademarks or any copyright, trademark, patent,
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* or other intellectual property or proprietary rights notices on or in the
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* Software, including any copy thereof. Redistributions in binary or source
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* form must include this license and terms.
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*
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* THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL ESOTERIC SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, BUSINESS INTERRUPTION, OR LOSS OF
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* USE, DATA, OR PROFITS) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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using System;
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namespace Spine {
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public class TransformConstraint : IConstraint {
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internal TransformConstraintData data;
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internal ExposedList<Bone> bones;
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internal Bone target;
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internal float rotateMix, translateMix, scaleMix, shearMix;
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public TransformConstraintData Data { get { return data; } }
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public int Order { get { return data.order; } }
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public ExposedList<Bone> Bones { get { return bones; } }
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public Bone Target { get { return target; } set { target = value; } }
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public float RotateMix { get { return rotateMix; } set { rotateMix = value; } }
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public float TranslateMix { get { return translateMix; } set { translateMix = value; } }
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public float ScaleMix { get { return scaleMix; } set { scaleMix = value; } }
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public float ShearMix { get { return shearMix; } set { shearMix = value; } }
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public TransformConstraint (TransformConstraintData data, Skeleton skeleton) {
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if (data == null) throw new ArgumentNullException("data", "data cannot be null.");
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if (skeleton == null) throw new ArgumentNullException("skeleton", "skeleton cannot be null.");
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this.data = data;
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rotateMix = data.rotateMix;
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translateMix = data.translateMix;
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scaleMix = data.scaleMix;
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shearMix = data.shearMix;
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bones = new ExposedList<Bone>();
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foreach (BoneData boneData in data.bones)
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bones.Add (skeleton.FindBone (boneData.name));
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target = skeleton.FindBone(data.target.name);
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}
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public void Apply () {
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Update();
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}
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public void Update () {
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if (data.local) {
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if (data.relative)
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ApplyRelativeLocal();
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else
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ApplyAbsoluteLocal();
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} else {
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if (data.relative)
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ApplyRelativeWorld();
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else
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ApplyAbsoluteWorld();
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}
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}
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void ApplyAbsoluteWorld () {
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float rotateMix = this.rotateMix, translateMix = this.translateMix, scaleMix = this.scaleMix, shearMix = this.shearMix;
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Bone target = this.target;
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float ta = target.a, tb = target.b, tc = target.c, td = target.d;
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float degRadReflect = ta * td - tb * tc > 0 ? MathUtils.DegRad : -MathUtils.DegRad;
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float offsetRotation = data.offsetRotation * degRadReflect, offsetShearY = data.offsetShearY * degRadReflect;
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var bones = this.bones;
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for (int i = 0, n = bones.Count; i < n; i++) {
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Bone bone = bones.Items[i];
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bool modified = false;
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if (rotateMix != 0) {
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float a = bone.a, b = bone.b, c = bone.c, d = bone.d;
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float r = MathUtils.Atan2(tc, ta) - MathUtils.Atan2(c, a) + offsetRotation;
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if (r > MathUtils.PI)
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r -= MathUtils.PI2;
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else if (r < -MathUtils.PI) r += MathUtils.PI2;
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r *= rotateMix;
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float cos = MathUtils.Cos(r), sin = MathUtils.Sin(r);
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bone.a = cos * a - sin * c;
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bone.b = cos * b - sin * d;
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bone.c = sin * a + cos * c;
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bone.d = sin * b + cos * d;
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modified = true;
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}
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if (translateMix != 0) {
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float tx, ty; //Vector2 temp = this.temp;
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target.LocalToWorld(data.offsetX, data.offsetY, out tx, out ty); //target.localToWorld(temp.set(data.offsetX, data.offsetY));
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bone.worldX += (tx - bone.worldX) * translateMix;
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bone.worldY += (ty - bone.worldY) * translateMix;
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modified = true;
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}
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if (scaleMix > 0) {
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float s = (float)Math.Sqrt(bone.a * bone.a + bone.c * bone.c);
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//float ts = (float)Math.sqrt(ta * ta + tc * tc);
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if (s > 0.00001f) s = (s + ((float)Math.Sqrt(ta * ta + tc * tc) - s + data.offsetScaleX) * scaleMix) / s;
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bone.a *= s;
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bone.c *= s;
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s = (float)Math.Sqrt(bone.b * bone.b + bone.d * bone.d);
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//ts = (float)Math.Sqrt(tb * tb + td * td);
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if (s > 0.00001f) s = (s + ((float)Math.Sqrt(tb * tb + td * td) - s + data.offsetScaleY) * scaleMix) / s;
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bone.b *= s;
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bone.d *= s;
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modified = true;
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}
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if (shearMix > 0) {
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float b = bone.b, d = bone.d;
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float by = MathUtils.Atan2(d, b);
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float r = MathUtils.Atan2(td, tb) - MathUtils.Atan2(tc, ta) - (by - MathUtils.Atan2(bone.c, bone.a));
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if (r > MathUtils.PI)
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r -= MathUtils.PI2;
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else if (r < -MathUtils.PI) r += MathUtils.PI2;
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r = by + (r + offsetShearY) * shearMix;
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float s = (float)Math.Sqrt(b * b + d * d);
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bone.b = MathUtils.Cos(r) * s;
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bone.d = MathUtils.Sin(r) * s;
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modified = true;
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}
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if (modified) bone.appliedValid = false;
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}
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}
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void ApplyRelativeWorld () {
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float rotateMix = this.rotateMix, translateMix = this.translateMix, scaleMix = this.scaleMix, shearMix = this.shearMix;
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Bone target = this.target;
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float ta = target.a, tb = target.b, tc = target.c, td = target.d;
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float degRadReflect = ta * td - tb * tc > 0 ? MathUtils.DegRad : -MathUtils.DegRad;
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float offsetRotation = data.offsetRotation * degRadReflect, offsetShearY = data.offsetShearY * degRadReflect;
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var bones = this.bones;
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for (int i = 0, n = bones.Count; i < n; i++) {
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Bone bone = bones.Items[i];
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bool modified = false;
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if (rotateMix != 0) {
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float a = bone.a, b = bone.b, c = bone.c, d = bone.d;
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float r = MathUtils.Atan2(tc, ta) + offsetRotation;
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if (r > MathUtils.PI)
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r -= MathUtils.PI2;
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else if (r < -MathUtils.PI) r += MathUtils.PI2;
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r *= rotateMix;
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float cos = MathUtils.Cos(r), sin = MathUtils.Sin(r);
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bone.a = cos * a - sin * c;
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bone.b = cos * b - sin * d;
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bone.c = sin * a + cos * c;
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bone.d = sin * b + cos * d;
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modified = true;
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}
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if (translateMix != 0) {
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float tx, ty; //Vector2 temp = this.temp;
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target.LocalToWorld(data.offsetX, data.offsetY, out tx, out ty); //target.localToWorld(temp.set(data.offsetX, data.offsetY));
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bone.worldX += tx * translateMix;
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bone.worldY += ty * translateMix;
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modified = true;
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}
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if (scaleMix > 0) {
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float s = ((float)Math.Sqrt(ta * ta + tc * tc) - 1 + data.offsetScaleX) * scaleMix + 1;
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bone.a *= s;
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bone.c *= s;
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s = ((float)Math.Sqrt(tb * tb + td * td) - 1 + data.offsetScaleY) * scaleMix + 1;
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bone.b *= s;
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bone.d *= s;
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modified = true;
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}
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if (shearMix > 0) {
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float r = MathUtils.Atan2(td, tb) - MathUtils.Atan2(tc, ta);
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if (r > MathUtils.PI)
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r -= MathUtils.PI2;
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else if (r < -MathUtils.PI) r += MathUtils.PI2;
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float b = bone.b, d = bone.d;
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r = MathUtils.Atan2(d, b) + (r - MathUtils.PI / 2 + offsetShearY) * shearMix;
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float s = (float)Math.Sqrt(b * b + d * d);
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bone.b = MathUtils.Cos(r) * s;
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bone.d = MathUtils.Sin(r) * s;
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modified = true;
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}
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if (modified) bone.appliedValid = false;
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}
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}
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void ApplyAbsoluteLocal () {
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float rotateMix = this.rotateMix, translateMix = this.translateMix, scaleMix = this.scaleMix, shearMix = this.shearMix;
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Bone target = this.target;
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if (!target.appliedValid) target.UpdateAppliedTransform();
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var bonesItems = this.bones.Items;
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for (int i = 0, n = this.bones.Count; i < n; i++) {
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Bone bone = bonesItems[i];
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if (!bone.appliedValid) bone.UpdateAppliedTransform();
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float rotation = bone.arotation;
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if (rotateMix != 0) {
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float r = target.arotation - rotation + data.offsetRotation;
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r -= (16384 - (int)(16384.499999999996 - r / 360)) * 360;
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rotation += r * rotateMix;
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}
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float x = bone.ax, y = bone.ay;
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if (translateMix != 0) {
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x += (target.ax - x + data.offsetX) * translateMix;
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y += (target.ay - y + data.offsetY) * translateMix;
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}
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float scaleX = bone.ascaleX, scaleY = bone.ascaleY;
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if (scaleMix > 0) {
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if (scaleX > 0.00001f) scaleX = (scaleX + (target.ascaleX - scaleX + data.offsetScaleX) * scaleMix) / scaleX;
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if (scaleY > 0.00001f) scaleY = (scaleY + (target.ascaleY - scaleY + data.offsetScaleY) * scaleMix) / scaleY;
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}
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float shearY = bone.ashearY;
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if (shearMix > 0) {
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float r = target.ashearY - shearY + data.offsetShearY;
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r -= (16384 - (int)(16384.499999999996 - r / 360)) * 360;
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bone.shearY += r * shearMix;
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}
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bone.UpdateWorldTransform(x, y, rotation, scaleX, scaleY, bone.ashearX, shearY);
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}
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}
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void ApplyRelativeLocal () {
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float rotateMix = this.rotateMix, translateMix = this.translateMix, scaleMix = this.scaleMix, shearMix = this.shearMix;
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Bone target = this.target;
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if (!target.appliedValid) target.UpdateAppliedTransform();
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var bonesItems = this.bones.Items;
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for (int i = 0, n = this.bones.Count; i < n; i++) {
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Bone bone = bonesItems[i];
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if (!bone.appliedValid) bone.UpdateAppliedTransform();
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float rotation = bone.arotation;
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if (rotateMix != 0) rotation += (target.arotation + data.offsetRotation) * rotateMix;
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float x = bone.ax, y = bone.ay;
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if (translateMix != 0) {
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x += (target.ax + data.offsetX) * translateMix;
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y += (target.ay + data.offsetY) * translateMix;
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}
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float scaleX = bone.ascaleX, scaleY = bone.ascaleY;
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if (scaleMix > 0) {
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if (scaleX > 0.00001f) scaleX *= ((target.ascaleX - 1 + data.offsetScaleX) * scaleMix) + 1;
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if (scaleY > 0.00001f) scaleY *= ((target.ascaleY - 1 + data.offsetScaleY) * scaleMix) + 1;
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}
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float shearY = bone.ashearY;
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if (shearMix > 0) shearY += (target.ashearY + data.offsetShearY) * shearMix;
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bone.UpdateWorldTransform(x, y, rotation, scaleX, scaleY, bone.ashearX, shearY);
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}
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}
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override public string ToString () {
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return data.name;
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}
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}
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}
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