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[lua] Ported IKConstraint simplification, see #907

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badlogic 2017-05-24 11:48:38 +02:00
parent 4a3e12c75f
commit eb8cc49ed1
1 changed files with 7 additions and 21 deletions
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28
spine-lua/IkConstraint.lua
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@ -208,28 +208,14 @@ function IkConstraint:apply2 (parent, child, targetX, targetY, bendDir, alpha)
end end
end end
if not skip then if not skip then
local minAngle = 0 local minAngle = math_pi
local minDist = 9999999999 local minX = l1 - a
local minX = 0 local minDist = minX * minX
local minY = 0 local minY = 0;
local maxAngle = 0 local maxAngle = 0
local maxDist = 0 local maxX = l1 + a
local maxX = 0 local maxDist = maxX * maxX
local maxY = 0 local maxY = 0
x = l1 + a
d = x * x
if d > maxDist then
maxAngle = 0
maxDist = d
maxX = x
end
x = l1 - a
d = x * x
if d < minDist then
minAngle = math_pi
minDist = d
minX = x
end
local angle = math_acos(-a * l1 / (aa - bb)) local angle = math_acos(-a * l1 / (aa - bb))
x = a * math_cos(angle) + l1 x = a * math_cos(angle) + l1
y = b * math_sin(angle) y = b * math_sin(angle)