mirror of https://github.com/axmolengine/axmol.git
274 lines
10 KiB
C
274 lines
10 KiB
C
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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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#include <spine/TransformConstraint.h>
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#include <spine/Skeleton.h>
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#include <spine/extension.h>
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spTransformConstraint* spTransformConstraint_create (spTransformConstraintData* data, const spSkeleton* skeleton) {
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int i;
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spTransformConstraint* self = NEW(spTransformConstraint);
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CONST_CAST(spTransformConstraintData*, self->data) = data;
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self->rotateMix = data->rotateMix;
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self->translateMix = data->translateMix;
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self->scaleMix = data->scaleMix;
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self->shearMix = data->shearMix;
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self->bonesCount = data->bonesCount;
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CONST_CAST(spBone**, self->bones) = MALLOC(spBone*, self->bonesCount);
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for (i = 0; i < self->bonesCount; ++i)
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self->bones[i] = spSkeleton_findBone(skeleton, self->data->bones[i]->name);
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self->target = spSkeleton_findBone(skeleton, self->data->target->name);
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return self;
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}
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void spTransformConstraint_dispose (spTransformConstraint* self) {
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FREE(self->bones);
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FREE(self);
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}
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void _spTransformConstraint_applyAbsoluteWorld (spTransformConstraint* self) {
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float rotateMix = self->rotateMix, translateMix = self->translateMix, scaleMix = self->scaleMix, shearMix = self->shearMix;
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spBone* target = self->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 ? DEG_RAD : -DEG_RAD;
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float offsetRotation = self->data->offsetRotation * degRadReflect, offsetShearY = self->data->offsetShearY * degRadReflect;
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int /*bool*/ modified;
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int i;
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float a, b, c, d, r, cosine, sine, x, y, s, ts, by;
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for (i = 0; i < self->bonesCount; ++i) {
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spBone* bone = self->bones[i];
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modified = 0;
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if (rotateMix != 0) {
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a = bone->a, b = bone->b, c = bone->c, d = bone->d;
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r = ATAN2(tc, ta) - ATAN2(c, a) + offsetRotation;
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if (r > PI) r -= PI2;
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else if (r < -PI) r += PI2;
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r *= rotateMix;
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cosine = COS(r);
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sine = SIN(r);
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CONST_CAST(float, bone->a) = cosine * a - sine * c;
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CONST_CAST(float, bone->b) = cosine * b - sine * d;
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CONST_CAST(float, bone->c) = sine * a + cosine * c;
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CONST_CAST(float, bone->d) = sine * b + cosine * d;
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modified = 1;
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}
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if (translateMix != 0) {
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spBone_localToWorld(target, self->data->offsetX, self->data->offsetY, &x, &y);
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CONST_CAST(float, bone->worldX) += (x - bone->worldX) * translateMix;
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CONST_CAST(float, bone->worldY) += (y - bone->worldY) * translateMix;
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modified = 1;
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}
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if (scaleMix > 0) {
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s = SQRT(bone->a * bone->a + bone->c * bone->c);
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ts = SQRT(ta * ta + tc * tc);
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if (s > 0.00001f) s = (s + (ts - s + self->data->offsetScaleX) * scaleMix) / s;
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CONST_CAST(float, bone->a) *= s;
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CONST_CAST(float, bone->c) *= s;
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s = SQRT(bone->b * bone->b + bone->d * bone->d);
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ts = SQRT(tb * tb + td * td);
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if (s > 0.00001f) s = (s + (ts - s + self->data->offsetScaleY) * scaleMix) / s;
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CONST_CAST(float, bone->b) *= s;
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CONST_CAST(float, bone->d) *= s;
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modified = 1;
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}
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if (shearMix > 0) {
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b = bone->b, d = bone->d;
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by = ATAN2(d, b);
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r = ATAN2(td, tb) - ATAN2(tc, ta) - (by - ATAN2(bone->c, bone->a));
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s = SQRT(b * b + d * d);
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if (r > PI) r -= PI2;
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else if (r < -PI) r += PI2;
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r = by + (r + offsetShearY) * shearMix;
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CONST_CAST(float, bone->b) = COS(r) * s;
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CONST_CAST(float, bone->d) = SIN(r) * s;
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modified = 1;
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}
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if (modified) CONST_CAST(int, bone->appliedValid) = 0;
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}
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}
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void _spTransformConstraint_applyRelativeWorld (spTransformConstraint* self) {
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float rotateMix = self->rotateMix, translateMix = self->translateMix, scaleMix = self->scaleMix, shearMix = self->shearMix;
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spBone* target = self->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 ? DEG_RAD : -DEG_RAD;
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float offsetRotation = self->data->offsetRotation * degRadReflect, offsetShearY = self->data->offsetShearY * degRadReflect;
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int /*bool*/ modified;
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int i;
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float a, b, c, d, r, cosine, sine, x, y, s;
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for (i = 0; i < self->bonesCount; ++i) {
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spBone* bone = self->bones[i];
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modified = 0;
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if (rotateMix != 0) {
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a = bone->a, b = bone->b, c = bone->c, d = bone->d;
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r = ATAN2(tc, ta) + offsetRotation;
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if (r > PI) r -= PI2;
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else if (r < -PI) r += PI2;
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r *= rotateMix;
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cosine = COS(r);
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sine = SIN(r);
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CONST_CAST(float, bone->a) = cosine * a - sine * c;
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CONST_CAST(float, bone->b) = cosine * b - sine * d;
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CONST_CAST(float, bone->c) = sine * a + cosine * c;
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CONST_CAST(float, bone->d) = sine * b + cosine * d;
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modified = 1;
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}
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if (translateMix != 0) {
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spBone_localToWorld(target, self->data->offsetX, self->data->offsetY, &x, &y);
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CONST_CAST(float, bone->worldX) += (x * translateMix);
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CONST_CAST(float, bone->worldY) += (y * translateMix);
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modified = 1;
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}
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if (scaleMix > 0) {
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s = (SQRT(ta * ta + tc * tc) - 1 + self->data->offsetScaleX) * scaleMix + 1;
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CONST_CAST(float, bone->a) *= s;
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CONST_CAST(float, bone->c) *= s;
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s = (SQRT(tb * tb + td * td) - 1 + self->data->offsetScaleY) * scaleMix + 1;
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CONST_CAST(float, bone->b) *= s;
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CONST_CAST(float, bone->d) *= s;
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modified = 1;
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}
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if (shearMix > 0) {
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r = ATAN2(td, tb) - ATAN2(tc, ta);
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if (r > PI) r -= PI2;
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else if (r < -PI) r += PI2;
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b = bone->b, d = bone->d;
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r = ATAN2(d, b) + (r - PI / 2 + offsetShearY) * shearMix;
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s = SQRT(b * b + d * d);
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CONST_CAST(float, bone->b) = COS(r) * s;
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CONST_CAST(float, bone->d) = SIN(r) * s;
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modified = 1;
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}
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if (modified) CONST_CAST(int, bone->appliedValid) = 0;
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}
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}
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void _spTransformConstraint_applyAbsoluteLocal (spTransformConstraint* self) {
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float rotateMix = self->rotateMix, translateMix = self->translateMix, scaleMix = self->scaleMix, shearMix = self->shearMix;
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spBone* target = self->target;
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int i;
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float rotation, r, x, y, scaleX, scaleY, shearY;
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if (!target->appliedValid) spBone_updateAppliedTransform(target);
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for (i = 0; i < self->bonesCount; ++i) {
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spBone* bone = self->bones[i];
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if (!bone->appliedValid) spBone_updateAppliedTransform(bone);
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rotation = bone->arotation;
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if (rotateMix != 0) {
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r = target->arotation - rotation + self->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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x = bone->ax, y = bone->ay;
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if (translateMix != 0) {
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x += (target->ax - x + self->data->offsetX) * translateMix;
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y += (target->ay - y + self->data->offsetY) * translateMix;
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}
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scaleX = bone->ascaleX, scaleY = bone->ascaleY;
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if (scaleMix > 0) {
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if (scaleX > 0.00001) scaleX = (scaleX + (target->ascaleX - scaleX + self->data->offsetScaleX) * scaleMix) / scaleX;
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if (scaleY > 0.00001) scaleY = (scaleY + (target->ascaleY - scaleY + self->data->offsetScaleY) * scaleMix) / scaleY;
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}
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shearY = bone->ashearY;
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if (shearMix > 0) {
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r = target->ashearY - shearY + self->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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spBone_updateWorldTransformWith(bone, x, y, rotation, scaleX, scaleY, bone->ashearX, shearY);
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}
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}
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void _spTransformConstraint_applyRelativeLocal (spTransformConstraint* self) {
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float rotateMix = self->rotateMix, translateMix = self->translateMix, scaleMix = self->scaleMix, shearMix = self->shearMix;
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spBone* target = self->target;
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int i;
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float rotation, x, y, scaleX, scaleY, shearY;
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if (!target->appliedValid) spBone_updateAppliedTransform(target);
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for (i = 0; i < self->bonesCount; ++i) {
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spBone* bone = self->bones[i];
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if (!bone->appliedValid) spBone_updateAppliedTransform(bone);
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rotation = bone->arotation;
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if (rotateMix != 0) rotation += (target->arotation + self->data->offsetRotation) * rotateMix;
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x = bone->ax;
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y = bone->ay;
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if (translateMix != 0) {
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x += (target->ax + self->data->offsetX) * translateMix;
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y += (target->ay + self->data->offsetY) * translateMix;
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}
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scaleX = bone->ascaleX;
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scaleY = bone->ascaleY;
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if (scaleMix > 0) {
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if (scaleX > 0.00001f) scaleX *= ((target->ascaleX - 1 + self->data->offsetScaleX) * scaleMix) + 1;
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if (scaleY > 0.00001f) scaleY *= ((target->ascaleY - 1 + self->data->offsetScaleY) * scaleMix) + 1;
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}
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shearY = bone->ashearY;
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if (shearMix > 0) shearY += (target->ashearY + self->data->offsetShearY) * shearMix;
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spBone_updateWorldTransformWith(bone, x, y, rotation, scaleX, scaleY, bone->ashearX, shearY);
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}
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}
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void spTransformConstraint_apply (spTransformConstraint* self) {
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if (self->data->local) {
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if (self->data->relative)
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_spTransformConstraint_applyRelativeLocal(self);
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else
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_spTransformConstraint_applyAbsoluteLocal(self);
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} else {
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if (self->data->relative)
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_spTransformConstraint_applyRelativeWorld(self);
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else
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_spTransformConstraint_applyAbsoluteWorld(self);
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}
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}
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