mirror of
https://github.com/EsotericSoftware/spine-runtimes.git
synced 2025-12-21 01:36:02 +08:00
62 lines
2.5 KiB
Lua
62 lines
2.5 KiB
Lua
-------------------------------------------------------------------------------
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-- Spine Runtimes License Agreement
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-- Last updated May 1, 2019. Replaces all prior versions.
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--
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-- Copyright (c) 2013-2019, Esoteric Software LLC
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--
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-- Integration of the Spine Runtimes into software or otherwise creating
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-- derivative works of the Spine Runtimes is permitted under the terms and
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-- conditions of Section 2 of the Spine Editor License Agreement:
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-- http://esotericsoftware.com/spine-editor-license
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--
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-- Otherwise, it is permitted to integrate the Spine Runtimes into software
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-- or otherwise create derivative works of the Spine Runtimes (collectively,
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-- "Products"), provided that each user of the Products must obtain their own
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-- Spine Editor license and redistribution of the Products in any form must
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-- include this license and copyright notice.
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--
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-- THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY EXPRESS
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-- OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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-- OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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-- NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY DIRECT, INDIRECT,
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-- INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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-- BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, BUSINESS
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-- INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND ON ANY
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-- THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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-- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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-- EVEN IF 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 BoundingBoxAttachment = {}
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function BoundingBoxAttachment.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.boundingbox,
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vertices = {}
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}
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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 = bone.m00
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local m01 = bone.m01
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local m10 = bone.m10
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local m11 = bone.m11
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local vertices = self.vertices
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local count = #vertices
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for i = 1, count, 2 do
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local px = vertices[i]
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local py = vertices[i + 1]
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worldVertices[i] = px * m00 + py * m01 + x
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worldVertices[i + 1] = px * m10 + py * m11 + y
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end
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end
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return self
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end
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return BoundingBoxAttachment
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