mirror of https://github.com/axmolengine/axmol.git
113 lines
4.8 KiB
C
113 lines
4.8 KiB
C
/******************************************************************************
|
|
* Spine Runtimes Software License
|
|
* Version 2.3
|
|
*
|
|
* Copyright (c) 2013-2015, Esoteric Software
|
|
* All rights reserved.
|
|
*
|
|
* You are granted a perpetual, non-exclusive, non-sublicensable and
|
|
* non-transferable license to use, install, execute and perform the Spine
|
|
* Runtimes Software (the "Software") and derivative works solely for personal
|
|
* or internal use. Without the written permission of Esoteric Software (see
|
|
* Section 2 of the Spine Software License Agreement), you may not (a) modify,
|
|
* translate, adapt or otherwise create derivative works, improvements of the
|
|
* Software or develop new applications using the Software or (b) remove,
|
|
* delete, alter or obscure any trademarks or any copyright, trademark, patent
|
|
* or other intellectual property or proprietary rights notices on or in the
|
|
* Software, including any copy thereof. Redistributions in binary or source
|
|
* form must include this license and terms.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE "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 BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
|
|
* OR BUSINESS INTERRUPTION) 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 THIS SOFTWARE, EVEN IF
|
|
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*****************************************************************************/
|
|
|
|
#include <spine/TransformConstraint.h>
|
|
#include <spine/Skeleton.h>
|
|
#include <spine/extension.h>
|
|
|
|
spTransformConstraint* spTransformConstraint_create (spTransformConstraintData* data, const spSkeleton* skeleton) {
|
|
int i;
|
|
spTransformConstraint* self = NEW(spTransformConstraint);
|
|
CONST_CAST(spTransformConstraintData*, self->data) = data;
|
|
self->rotateMix = data->rotateMix;
|
|
self->translateMix = data->translateMix;
|
|
self->scaleMix = data->scaleMix;
|
|
self->shearMix = data->shearMix;
|
|
self->bonesCount = data->bonesCount;
|
|
CONST_CAST(spBone**, self->bones) = MALLOC(spBone*, self->bonesCount);
|
|
for (i = 0; i < self->bonesCount; ++i)
|
|
self->bones[i] = spSkeleton_findBone(skeleton, self->data->bones[i]->name);
|
|
self->target = spSkeleton_findBone(skeleton, self->data->target->name);
|
|
return self;
|
|
}
|
|
|
|
void spTransformConstraint_dispose (spTransformConstraint* self) {
|
|
FREE(self->bones);
|
|
FREE(self);
|
|
}
|
|
|
|
void spTransformConstraint_apply (spTransformConstraint* self) {
|
|
float rotateMix = self->rotateMix, translateMix = self->translateMix, scaleMix = self->scaleMix, shearMix = self->shearMix;
|
|
spBone* target = self->target;
|
|
float ta = target->a, tb = target->b, tc = target->c, td = target->d;
|
|
int i;
|
|
for (i = 0; i < self->bonesCount; ++i) {
|
|
spBone* bone = self->bones[i];
|
|
|
|
if (rotateMix > 0) {
|
|
float a = bone->a, b = bone->b, c = bone->c, d = bone->d;
|
|
float r = ATAN2(tc, ta) - ATAN2(c, a) + self->data->offsetRotation * DEG_RAD;
|
|
float cosine, sine;
|
|
if (r > PI) r -= PI2;
|
|
else if (r < -PI) r += PI2;
|
|
r *= rotateMix;
|
|
cosine = COS(r);
|
|
sine = SIN(r);
|
|
CONST_CAST(float, bone->a) = cosine * a - sine * c;
|
|
CONST_CAST(float, bone->b) = cosine * b - sine * d;
|
|
CONST_CAST(float, bone->c) = sine * a + cosine * c;
|
|
CONST_CAST(float, bone->d) = sine * b + cosine * d;
|
|
}
|
|
|
|
if (translateMix > 0) {
|
|
float x, y;
|
|
spBone_localToWorld(target, self->data->offsetX, self->data->offsetY, &x, &y);
|
|
CONST_CAST(float, bone->worldX) += (x - bone->worldX) * translateMix;
|
|
CONST_CAST(float, bone->worldY) += (y - bone->worldY) * translateMix;
|
|
}
|
|
|
|
if (scaleMix > 0) {
|
|
float bs = SQRT(bone->a * bone->a + bone->c * bone->c);
|
|
float ts = SQRT(ta * ta + tc * tc);
|
|
float s = bs > 0.00001f ? (bs + (ts - bs + self->data->offsetScaleX) * scaleMix) / bs : 0;
|
|
CONST_CAST(float, bone->a) *= s;
|
|
CONST_CAST(float, bone->c) *= s;
|
|
bs = SQRT(bone->b * bone->b + bone->d * bone->d);
|
|
ts = SQRT(tb * tb + td * td);
|
|
s = bs > 0.00001f ? (bs + (ts - bs + self->data->offsetScaleY) * scaleMix) / bs : 0;
|
|
CONST_CAST(float, bone->b) *= s;
|
|
CONST_CAST(float, bone->d) *= s;
|
|
}
|
|
|
|
if (shearMix > 0) {
|
|
float b = bone->b, d = bone->d;
|
|
float by = ATAN2(d, b);
|
|
float r = ATAN2(td, tb) - ATAN2(tc, ta) - (by - ATAN2(bone->c, bone->a));
|
|
float s = SQRT(b * b + d * d);
|
|
if (r > PI) r -= PI2;
|
|
else if (r < -PI) r += PI2;
|
|
r = by + (r + self->data->offsetShearY * DEG_RAD) * shearMix;
|
|
CONST_CAST(float, bone->b) = COS(r) * s;
|
|
CONST_CAST(float, bone->d) = SIN(r) * s;
|
|
}
|
|
}
|
|
}
|