UnityMirror/spine-runtimes
1
0
Fork 0
mirror of https://github.com/EsotericSoftware/spine-runtimes.git synced 2026-02-08 16:24:53 +08:00
Code Issues Packages Projects Releases Wiki Activity

[lua] Fix 1-bone IK, see #1692.

Browse Source
This commit is contained in:
badlogic 2020-06-03 17:33:13 +02:00
parent c64e6adbde
commit dcc6925e90
1 changed files with 8 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
spine-lua/IkConstraint.lua
View File

@ -102,10 +102,14 @@ function IkConstraint:apply1 (bone, targetX, targetY, compress, stretch, uniform
tx = targetX - bone.worldX
ty = targetY - bone.worldY
elseif bone.data.transformMode == TransformMode.noRotationOrReflection then
rotationIK = rotationIK + Math.atan2(pc, pa) * MathUtils.radDeg
local ps = Math.abs(pa * pd - pb * pc) / (pa * pa + pc * pc)
pb = -pc * ps
pd = pa * ps
local s = math_abs(pa * pd - pb * pc) / (pa * pa + pc * pc);
local sa = pa / bone.skeleton.scaleX;
local sc = pc / bone.skeleton.scaleY;
pb = -sc * s * bone.skeleton.scaleX;
pd = sa * s * bone.skeleton.scaleY;
rotationIK = rotationIK + math_deg(math_atan2(sc, sa));
local x = targetX - p.worldX
local y = targetY - p.worldY
local d = pa * pd - pb * pc