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cocos_lib/cocos/editor-support/spine/TransformConstraint.cpp

354 lines
13 KiB

/******************************************************************************
* Spine Runtimes License Agreement
* Last updated January 1, 2020. Replaces all prior versions.
*
* Copyright (c) 2013-2020, 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.
*****************************************************************************/
#ifdef SPINE_UE4
#include "SpinePluginPrivatePCH.h"
#endif
#include <spine/TransformConstraint.h>
#include <spine/Bone.h>
#include <spine/Skeleton.h>
#include <spine/TransformConstraintData.h>
#include <spine/BoneData.h>
using namespace spine;
RTTI_IMPL(TransformConstraint, Updatable)
TransformConstraint::TransformConstraint(TransformConstraintData &data, Skeleton &skeleton) : Updatable(),
_data(data),
_target(skeleton.findBone(
data.getTarget()->getName())),
_rotateMix(
data.getRotateMix()),
_translateMix(
data.getTranslateMix()),
_scaleMix(
data.getScaleMix()),
_shearMix(
data.getShearMix()),
_active(false) {
_bones.ensureCapacity(_data.getBones().size());
for (size_t i = 0; i < _data.getBones().size(); ++i) {
BoneData *boneData = _data.getBones()[i];
_bones.add(skeleton.findBone(boneData->getName()));
}
}
void TransformConstraint::apply() {
update();
}
void TransformConstraint::update() {
if (_data.isLocal()) {
if (_data.isRelative())
applyRelativeLocal();
else
applyAbsoluteLocal();
} else {
if (_data.isRelative())
applyRelativeWorld();
else
applyAbsoluteWorld();
}
}
int TransformConstraint::getOrder() {
return _data.getOrder();
}
TransformConstraintData &TransformConstraint::getData() {
return _data;
}
Vector<Bone *> &TransformConstraint::getBones() {
return _bones;
}
Bone *TransformConstraint::getTarget() {
return _target;
}
void TransformConstraint::setTarget(Bone *inValue) {
_target = inValue;
}
float TransformConstraint::getRotateMix() {
return _rotateMix;
}
void TransformConstraint::setRotateMix(float inValue) {
_rotateMix = inValue;
}
float TransformConstraint::getTranslateMix() {
return _translateMix;
}
void TransformConstraint::setTranslateMix(float inValue) {
_translateMix = inValue;
}
float TransformConstraint::getScaleMix() {
return _scaleMix;
}
void TransformConstraint::setScaleMix(float inValue) {
_scaleMix = inValue;
}
float TransformConstraint::getShearMix() {
return _shearMix;
}
void TransformConstraint::setShearMix(float inValue) {
_shearMix = inValue;
}
void TransformConstraint::applyAbsoluteWorld() {
float rotateMix = _rotateMix, translateMix = _translateMix, scaleMix = _scaleMix, shearMix = _shearMix;
Bone &target = *_target;
float ta = target._a, tb = target._b, tc = target._c, td = target._d;
float degRadReflect = ta * td - tb * tc > 0 ? MathUtil::Deg_Rad : -MathUtil::Deg_Rad;
float offsetRotation = _data._offsetRotation * degRadReflect, offsetShearY = _data._offsetShearY * degRadReflect;
for (size_t i = 0; i < _bones.size(); ++i) {
Bone *item = _bones[i];
Bone &bone = *item;
bool modified = false;
if (rotateMix != 0) {
float a = bone._a, b = bone._b, c = bone._c, d = bone._d;
float r = MathUtil::atan2(tc, ta) - MathUtil::atan2(c, a) + offsetRotation;
if (r > MathUtil::Pi)
r -= MathUtil::Pi_2;
else if (r < -MathUtil::Pi)
r += MathUtil::Pi_2;
r *= rotateMix;
float cos = MathUtil::cos(r), sin = MathUtil::sin(r);
bone._a = cos * a - sin * c;
bone._b = cos * b - sin * d;
bone._c = sin * a + cos * c;
bone._d = sin * b + cos * d;
modified = true;
}
if (translateMix != 0) {
float tx, ty;
target.localToWorld(_data._offsetX, _data._offsetY, tx, ty);
bone._worldX += (tx - bone._worldX) * translateMix;
bone._worldY += (ty - bone._worldY) * translateMix;
modified = true;
}
if (scaleMix > 0) {
float s = MathUtil::sqrt(bone._a * bone._a + bone._c * bone._c);
if (s > 0.00001f) s = (s + (MathUtil::sqrt(ta * ta + tc * tc) - s + _data._offsetScaleX) * scaleMix) / s;
bone._a *= s;
bone._c *= s;
s = MathUtil::sqrt(bone._b * bone._b + bone._d * bone._d);
if (s > 0.00001f) s = (s + (MathUtil::sqrt(tb * tb + td * td) - s + _data._offsetScaleY) * scaleMix) / s;
bone._b *= s;
bone._d *= s;
modified = true;
}
if (shearMix > 0) {
float b = bone._b, d = bone._d;
float by = MathUtil::atan2(d, b);
float r = MathUtil::atan2(td, tb) - MathUtil::atan2(tc, ta) - (by - MathUtil::atan2(bone._c, bone._a));
if (r > MathUtil::Pi)
r -= MathUtil::Pi_2;
else if (r < -MathUtil::Pi)
r += MathUtil::Pi_2;
r = by + (r + offsetShearY) * shearMix;
float s = MathUtil::sqrt(b * b + d * d);
bone._b = MathUtil::cos(r) * s;
bone._d = MathUtil::sin(r) * s;
modified = true;
}
if (modified) bone._appliedValid = false;
}
}
void TransformConstraint::applyRelativeWorld() {
float rotateMix = _rotateMix, translateMix = _translateMix, scaleMix = _scaleMix, shearMix = _shearMix;
Bone &target = *_target;
float ta = target._a, tb = target._b, tc = target._c, td = target._d;
float degRadReflect = ta * td - tb * tc > 0 ? MathUtil::Deg_Rad : -MathUtil::Deg_Rad;
float offsetRotation = _data._offsetRotation * degRadReflect, offsetShearY = _data._offsetShearY * degRadReflect;
for (size_t i = 0; i < _bones.size(); ++i) {
Bone *item = _bones[i];
Bone &bone = *item;
bool modified = false;
if (rotateMix != 0) {
float a = bone._a, b = bone._b, c = bone._c, d = bone._d;
float r = MathUtil::atan2(tc, ta) + offsetRotation;
if (r > MathUtil::Pi)
r -= MathUtil::Pi_2;
else if (r < -MathUtil::Pi)
r += MathUtil::Pi_2;
r *= rotateMix;
float cos = MathUtil::cos(r), sin = MathUtil::sin(r);
bone._a = cos * a - sin * c;
bone._b = cos * b - sin * d;
bone._c = sin * a + cos * c;
bone._d = sin * b + cos * d;
modified = true;
}
if (translateMix != 0) {
float tx, ty;
target.localToWorld(_data._offsetX, _data._offsetY, tx, ty);
bone._worldX += tx * translateMix;
bone._worldY += ty * translateMix;
modified = true;
}
if (scaleMix > 0) {
float s = (MathUtil::sqrt(ta * ta + tc * tc) - 1 + _data._offsetScaleX) * scaleMix + 1;
bone._a *= s;
bone._c *= s;
s = (MathUtil::sqrt(tb * tb + td * td) - 1 + _data._offsetScaleY) * scaleMix + 1;
bone._b *= s;
bone._d *= s;
modified = true;
}
if (shearMix > 0) {
float r = MathUtil::atan2(td, tb) - MathUtil::atan2(tc, ta);
if (r > MathUtil::Pi)
r -= MathUtil::Pi_2;
else if (r < -MathUtil::Pi)
r += MathUtil::Pi_2;
float b = bone._b, d = bone._d;
r = MathUtil::atan2(d, b) + (r - MathUtil::Pi / 2 + offsetShearY) * shearMix;
float s = MathUtil::sqrt(b * b + d * d);
bone._b = MathUtil::cos(r) * s;
bone._d = MathUtil::sin(r) * s;
modified = true;
}
if (modified) bone._appliedValid = false;
}
}
void TransformConstraint::applyAbsoluteLocal() {
float rotateMix = _rotateMix, translateMix = _translateMix, scaleMix = _scaleMix, shearMix = _shearMix;
Bone &target = *_target;
if (!target._appliedValid) target.updateAppliedTransform();
for (size_t i = 0; i < _bones.size(); ++i) {
Bone *item = _bones[i];
Bone &bone = *item;
if (!bone._appliedValid) bone.updateAppliedTransform();
float rotation = bone._arotation;
if (rotateMix != 0) {
float r = target._arotation - rotation + _data._offsetRotation;
r -= (16384 - (int)(16384.499999999996 - r / 360)) * 360;
rotation += r * rotateMix;
}
float x = bone._ax, y = bone._ay;
if (translateMix != 0) {
x += (target._ax - x + _data._offsetX) * translateMix;
y += (target._ay - y + _data._offsetY) * translateMix;
}
float scaleX = bone._ascaleX, scaleY = bone._ascaleY;
if (scaleMix != 0) {
if (scaleX > 0.00001f) scaleX = (scaleX + (target._ascaleX - scaleX + _data._offsetScaleX) * scaleMix) / scaleX;
if (scaleY > 0.00001f) scaleY = (scaleY + (target._ascaleY - scaleY + _data._offsetScaleY) * scaleMix) / scaleY;
}
float shearY = bone._ashearY;
if (shearMix != 0) {
float r = target._ashearY - shearY + _data._offsetShearY;
r -= (16384 - (int)(16384.499999999996 - r / 360)) * 360;
bone._shearY += r * shearMix;
}
bone.updateWorldTransform(x, y, rotation, scaleX, scaleY, bone._ashearX, shearY);
}
}
void TransformConstraint::applyRelativeLocal() {
float rotateMix = _rotateMix, translateMix = _translateMix, scaleMix = _scaleMix, shearMix = _shearMix;
Bone &target = *_target;
if (!target._appliedValid) target.updateAppliedTransform();
for (size_t i = 0; i < _bones.size(); ++i) {
Bone *item = _bones[i];
Bone &bone = *item;
if (!bone._appliedValid) bone.updateAppliedTransform();
float rotation = bone._arotation;
if (rotateMix != 0) rotation += (target._arotation + _data._offsetRotation) * rotateMix;
float x = bone._ax, y = bone._ay;
if (translateMix != 0) {
x += (target._ax + _data._offsetX) * translateMix;
y += (target._ay + _data._offsetY) * translateMix;
}
float scaleX = bone._ascaleX, scaleY = bone._ascaleY;
if (scaleMix != 0) {
if (scaleX > 0.00001f) scaleX *= ((target._ascaleX - 1 + _data._offsetScaleX) * scaleMix) + 1;
if (scaleY > 0.00001f) scaleY *= ((target._ascaleY - 1 + _data._offsetScaleY) * scaleMix) + 1;
}
float shearY = bone._ashearY;
if (shearMix != 0) shearY += (target._ashearY + _data._offsetShearY) * shearMix;
bone.updateWorldTransform(x, y, rotation, scaleX, scaleY, bone._ashearX, shearY);
}
}
bool TransformConstraint::isActive() {
return _active;
}
void TransformConstraint::setActive(bool inValue) {
_active = inValue;
}