mirror of
https://github.com/EsotericSoftware/spine-runtimes.git
synced 2025-12-21 01:36:02 +08:00
112 lines
3.7 KiB
Lua
112 lines
3.7 KiB
Lua
------------------------------------------------------------------------------
|
|
-- Spine Runtime Software License - Version 1.0
|
|
--
|
|
-- Copyright (c) 2013, Esoteric Software
|
|
-- All rights reserved.
|
|
--
|
|
-- Redistribution and use in source and binary forms in whole or in part, with
|
|
-- or without modification, are permitted provided that the following conditions
|
|
-- are met:
|
|
--
|
|
-- 1. A Spine Essential, Professional, Enterprise, or Education License must
|
|
-- be purchased from Esoteric Software and the license must remain valid:
|
|
-- http://esotericsoftware.com/
|
|
-- 2. Redistributions of source code must retain this license, which is the
|
|
-- above copyright notice, this declaration of conditions and the following
|
|
-- disclaimer.
|
|
-- 3. Redistributions in binary form must reproduce this license, which is the
|
|
-- above copyright notice, this declaration of conditions and the following
|
|
-- disclaimer, in the documentation and/or other materials provided with the
|
|
-- distribution.
|
|
--
|
|
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
|
-- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
-- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
-- DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
|
|
-- ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
-- (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
-- LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
-- ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
-- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
-- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
------------------------------------------------------------------------------
|
|
|
|
local Bone = {}
|
|
|
|
function Bone.new (data, parent)
|
|
if not data then error("data cannot be nil", 2) end
|
|
|
|
local self = {
|
|
data = data,
|
|
parent = parent,
|
|
x = 0, y = 0,
|
|
rotation = 0,
|
|
scaleX = 1, scaleY = 1,
|
|
m00 = 0, m01 = 0, worldX = 0, -- a b x
|
|
m10 = 0, m11 = 0, worldY = 0, -- c d y
|
|
worldRotation = 0,
|
|
worldScaleX = 1, worldScaleY = 1,
|
|
}
|
|
|
|
function self:updateWorldTransform (flipX, flipY)
|
|
local parent = self.parent
|
|
if parent then
|
|
self.worldX = self.x * parent.m00 + self.y * parent.m01 + parent.worldX
|
|
self.worldY = self.x * parent.m10 + self.y * parent.m11 + parent.worldY
|
|
if (self.data.inheritScale) then
|
|
self.worldScaleX = parent.worldScaleX * self.scaleX
|
|
self.worldScaleY = parent.worldScaleY * self.scaleY
|
|
else
|
|
self.worldScaleX = self.scaleX
|
|
self.worldScaleY = self.scaleY
|
|
end
|
|
if (self.data.inheritRotation) then
|
|
self.worldRotation = parent.worldRotation + self.rotation
|
|
else
|
|
self.worldRotation = self.rotation
|
|
end
|
|
else
|
|
if flipX then
|
|
self.worldX = -self.x
|
|
else
|
|
self.worldX = self.x
|
|
end
|
|
if flipY then
|
|
self.worldY = -self.y
|
|
else
|
|
self.worldY = self.y
|
|
end
|
|
self.worldScaleX = self.scaleX
|
|
self.worldScaleY = self.scaleY
|
|
self.worldRotation = self.rotation
|
|
end
|
|
local radians = math.rad(self.worldRotation)
|
|
local cos = math.cos(radians)
|
|
local sin = math.sin(radians)
|
|
self.m00 = cos * self.worldScaleX
|
|
self.m10 = sin * self.worldScaleX
|
|
self.m01 = -sin * self.worldScaleY
|
|
self.m11 = cos * self.worldScaleY
|
|
if flipX then
|
|
self.m00 = -self.m00
|
|
self.m01 = -self.m01
|
|
end
|
|
if flipY then
|
|
self.m10 = -self.m10
|
|
self.m11 = -self.m11
|
|
end
|
|
end
|
|
|
|
function self:setToSetupPose ()
|
|
local data = self.data
|
|
self.x = data.x
|
|
self.y = data.y
|
|
self.rotation = data.rotation
|
|
self.scaleX = data.scaleX
|
|
self.scaleY = data.scaleY
|
|
end
|
|
|
|
return self
|
|
end
|
|
return Bone
|