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[c] Closes #2509, SP_INHERIT_NOSCALE was incorrectly implemented

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This commit is contained in:
Mario Zechner 2024-05-02 16:01:04 +02:00
parent 39635f7566
commit 04c132f4af
1 changed files with 20 additions and 15 deletions
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7
spine-c/spine-c/src/spine/Bone.c
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@ -161,7 +161,12 @@ void spBone_updateWorldTransformWith(spBone *self, float x, float y, float rotat
float za = (pa * cosine + pb * sine) / sx;
float zc = (pc * cosine + pd * sine) / sy;
float s = SQRT(za * za + zc * zc);
if (self->data->inherit == SP_INHERIT_NOSCALE && (pa * pd - pb * pc < 0) != (sx < 0 != sy < 0))
if (s > 0.00001f) s = 1 / s;
za *= s;
zc *= s;
s = SQRT(za * za + zc * zc);
if (self->inherit == SP_INHERIT_NOSCALE &&
(pa * pd - pb * pc < 0) != (sx < 0 != sy < 0))
s = -s;
rotation = PI / 2 + ATAN2(zc, za);
float zb = COS(rotation) * s;