mirror of https://github.com/axmolengine/axmol.git
119 lines
4.9 KiB
C
119 lines
4.9 KiB
C
/******************************************************************************
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* Spine Runtimes Software License
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* Version 2.1
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*
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* Copyright (c) 2013, 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 install, execute and perform the Spine Runtimes
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* Software (the "Software") solely for internal use. Without the written
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* permission of Esoteric Software (typically granted by licensing Spine), you
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* may not (a) modify, translate, adapt or otherwise create derivative works,
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* improvements of the Software or develop new applications using the Software
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* or (b) remove, delete, alter or obscure any trademarks or any copyright,
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* trademark, patent or other intellectual property or proprietary rights
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* notices on or in the Software, including any copy thereof. Redistributions
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* in binary or source 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 SOFTARE 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; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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#include <spine/Bone.h>
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#include <spine/extension.h>
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static int yDown;
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void spBone_setYDown (int value) {
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yDown = value;
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}
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spBone* spBone_create (spBoneData* data, spSkeleton* skeleton, spBone* parent) {
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spBone* self = NEW(spBone);
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CONST_CAST(spBoneData*, self->data) = data;
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CONST_CAST(spSkeleton*, self->skeleton) = skeleton;
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CONST_CAST(spBone*, self->parent) = parent;
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spBone_setToSetupPose(self);
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return self;
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}
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void spBone_dispose (spBone* self) {
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FREE(self);
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}
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void spBone_updateWorldTransform (spBone* self) {
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float radians, cosine, sine;
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if (self->parent) {
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CONST_CAST(float, self->worldX) = self->x * self->parent->m00 + self->y * self->parent->m01 + self->parent->worldX;
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CONST_CAST(float, self->worldY) = self->x * self->parent->m10 + self->y * self->parent->m11 + self->parent->worldY;
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if (self->data->inheritScale) {
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CONST_CAST(float, self->worldScaleX) = self->parent->worldScaleX * self->scaleX;
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CONST_CAST(float, self->worldScaleY) = self->parent->worldScaleY * self->scaleY;
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} else {
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CONST_CAST(float, self->worldScaleX) = self->scaleX;
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CONST_CAST(float, self->worldScaleY) = self->scaleY;
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}
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CONST_CAST(float, self->worldRotation) =
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self->data->inheritRotation ? self->parent->worldRotation + self->rotationIK : self->rotationIK;
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} else {
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CONST_CAST(float, self->worldX) = self->skeleton->flipX ? -self->x : self->x;
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CONST_CAST(float, self->worldY) = self->skeleton->flipY != yDown ? -self->y : self->y;
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CONST_CAST(float, self->worldScaleX) = self->scaleX;
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CONST_CAST(float, self->worldScaleY) = self->scaleY;
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CONST_CAST(float, self->worldRotation) = self->rotationIK;
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}
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radians = self->worldRotation * DEG_RAD;
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cosine = COS(radians);
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sine = SIN(radians);
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if (self->skeleton->flipX) {
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CONST_CAST(float, self->m00) = -cosine * self->worldScaleX;
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CONST_CAST(float, self->m01) = sine * self->worldScaleY;
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} else {
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CONST_CAST(float, self->m00) = cosine * self->worldScaleX;
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CONST_CAST(float, self->m01) = -sine * self->worldScaleY;
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}
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if (self->skeleton->flipY != yDown) {
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CONST_CAST(float, self->m10) = -sine * self->worldScaleX;
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CONST_CAST(float, self->m11) = -cosine * self->worldScaleY;
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} else {
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CONST_CAST(float, self->m10) = sine * self->worldScaleX;
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CONST_CAST(float, self->m11) = cosine * self->worldScaleY;
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}
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}
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void spBone_setToSetupPose (spBone* self) {
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self->x = self->data->x;
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self->y = self->data->y;
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self->rotation = self->data->rotation;
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self->rotationIK = self->rotation;
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self->scaleX = self->data->scaleX;
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self->scaleY = self->data->scaleY;
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}
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void spBone_worldToLocal (spBone* self, float worldX, float worldY, float* localX, float* localY) {
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float invDet;
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float dx = worldX - self->worldX, dy = worldY - self->worldY;
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float m00 = self->m00, m11 = self->m11;
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if (self->skeleton->flipX != (self->skeleton->flipY != yDown)) {
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m00 *= -1;
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m11 *= -1;
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}
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invDet = 1 / (m00 * m11 - self->m01 * self->m10);
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*localX = (dx * m00 * invDet - dy * self->m01 * invDet);
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*localY = (dy * m11 * invDet - dx * self->m10 * invDet);
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}
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void spBone_localToWorld (spBone* self, float localX, float localY, float* worldX, float* worldY) {
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*worldX = localX * self->m00 + localY * self->m01 + self->worldX;
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*worldY = localX * self->m10 + localY * self->m11 + self->worldY;
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}
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