mirror of
https://github.com/EsotericSoftware/spine-runtimes.git
synced 2025-12-20 17:26:01 +08:00
87f5bedead
nil is the actual keyword. 'null' works in non strict mode as all undeclared variables are considered 'nil' in non strict mode.
102 lines
4.3 KiB
Lua
102 lines
4.3 KiB
Lua
-------------------------------------------------------------------------------
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-- Spine Runtimes Software License
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-- Version 2.3
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--
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-- Copyright (c) 2013-2015, 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 use, install, execute and perform the Spine
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-- Runtimes Software (the "Software") and derivative works solely for personal
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-- or internal use. Without the written permission of Esoteric Software (see
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-- Section 2 of the Spine Software License Agreement), you may not (a) modify,
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-- translate, adapt or otherwise create derivative works, improvements of the
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-- Software or develop new applications using the Software or (b) remove,
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-- delete, alter or obscure any trademarks or any copyright, trademark, patent
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-- or other intellectual property or proprietary rights notices on or in the
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-- Software, including any copy thereof. Redistributions in binary or source
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-- form must include this license and terms.
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--
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-- THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE "AS IS" AND ANY EXPRESS OR
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-- IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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-- MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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-- EVENT SHALL ESOTERIC SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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-- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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-- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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-- OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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-- WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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-- OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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-- ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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-------------------------------------------------------------------------------
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local AttachmentType = require "spine-lua.AttachmentType"
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local RegionAttachment = {}
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function RegionAttachment.new (name)
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if not name then error("name cannot be nil", 2) end
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local self = {
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name = name,
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type = AttachmentType.region,
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x = 0, y = 0,
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rotation = 0,
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scaleX = 1, scaleY = 1,
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width = 0, height = 0,
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offset = {},
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uvs = {},
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r = 1, g = 1, b = 1, a = 1,
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path = nil,
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rendererObject = nil,
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regionOffsetX = 0, regionOffsetY = 0,
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regionWidth = 0, regionHeight = 0,
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regionOriginalWidth = 0, regionOriginalHeight = 0
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}
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function self:updateOffset ()
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local regionScaleX = self.width / self.regionOriginalWidth * self.scaleX
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local regionScaleY = self.height / self.regionOriginalHeight * self.scaleY
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local localX = -self.width / 2 * self.scaleX + self.regionOffsetX * regionScaleX
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local localY = -self.height / 2 * self.scaleY + self.regionOffsetY * regionScaleY
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local localX2 = localX + self.regionWidth * regionScaleX
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local localY2 = localY + self.regionHeight * regionScaleY
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local radians = self.rotation * math.pi / 180
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local cos = math.cos(radians)
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local sin = math.sin(radians)
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local localXCos = localX * cos + self.x
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local localXSin = localX * sin
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local localYCos = localY * cos + self.y
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local localYSin = localY * sin
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local localX2Cos = localX2 * cos + self.x
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local localX2Sin = localX2 * sin
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local localY2Cos = localY2 * cos + self.y
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local localY2Sin = localY2 * sin
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local offset = self.offset
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offset[0] = localXCos - localYSin -- X1
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offset[1] = localYCos + localXSin -- Y1
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offset[2] = localXCos - localY2Sin -- X2
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offset[3] = localY2Cos + localXSin -- Y2
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offset[4] = localX2Cos - localY2Sin -- X3
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offset[5] = localY2Cos + localX2Sin -- Y3
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offset[6] = localX2Cos - localYSin -- X4
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offset[7] = localYCos + localX2Sin -- Y4
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end
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function self:computeWorldVertices (x, y, bone, worldVertices)
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x = x + bone.worldX
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y = y + bone.worldY
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local m00, m01, m10, m11 = bone.m00, bone.m01, bone.m10, bone.m11
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local offset = self.offset
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vertices[0] = offset[0] * m00 + offset[1] * m01 + x
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vertices[1] = offset[0] * m10 + offset[1] * m11 + y
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vertices[2] = offset[2] * m00 + offset[3] * m01 + x
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vertices[3] = offset[2] * m10 + offset[3] * m11 + y
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vertices[4] = offset[4] * m00 + offset[5] * m01 + x
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vertices[5] = offset[4] * m10 + offset[5] * m11 + y
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vertices[6] = offset[6] * m00 + offset[7] * m01 + x
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vertices[7] = offset[6] * m10 + offset[7] * m11 + y
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end
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return self
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end
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return RegionAttachment
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