mirror of
https://github.com/EsotericSoftware/spine-runtimes.git
synced 2026-02-19 16:26:40 +08:00
100 lines
4.1 KiB
C
100 lines
4.1 KiB
C
/******************************************************************************
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* Spine Runtimes Software License
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* Version 2
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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, you may not (a) modify, translate, adapt or
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* otherwise create derivative works, improvements of the Software or develop
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* new applications using the Software or (b) remove, delete, alter or obscure
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* any trademarks or any copyright, trademark, patent or other intellectual
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* property or proprietary rights notices on or in the Software, including
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* any copy thereof. Redistributions in binary or source form must include
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* this license and terms. THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTARE BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF 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, 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(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_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->scaleX = self->data->scaleX;
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self->scaleY = self->data->scaleY;
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}
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void spBone_updateWorldTransform (spBone* self, int flipX, int flipY) {
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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->rotation : self->rotation;
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} else {
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CONST_CAST(float, self->worldX) = flipX ? -self->x : self->x;
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CONST_CAST(float, self->worldY) = 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->rotation;
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}
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radians = (float)(self->worldRotation * 3.1415926535897932385 / 180);
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#ifdef __STDC_VERSION__
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cosine = cosf(radians);
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sine = sinf(radians);
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#else
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cosine = (float)cos(radians);
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sine = (float)sin(radians);
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#endif
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CONST_CAST(float, self->m00) = cosine * self->worldScaleX;
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CONST_CAST(float, self->m10) = sine * self->worldScaleX;
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CONST_CAST(float, self->m01) = -sine * self->worldScaleY;
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CONST_CAST(float, self->m11) = cosine * self->worldScaleY;
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if (flipX) {
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CONST_CAST(float, self->m00) = -self->m00;
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CONST_CAST(float, self->m01) = -self->m01;
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}
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if (flipY != yDown) {
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CONST_CAST(float, self->m10) = -self->m10;
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CONST_CAST(float, self->m11) = -self->m11;
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}
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}
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