103 lines
2.9 KiB
Lua
103 lines
2.9 KiB
Lua
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-- Copyright (C) 2017-2020 DBotThePony
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-- Permission is hereby granted, free of charge, to any person obtaining a copy
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-- of this software and associated documentation files (the "Software"), to deal
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-- in the Software without restriction, including without limitation the rights
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-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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-- of the Software, and to permit persons to whom the Software is furnished to do so,
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-- subject to the following conditions:
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-- The above copyright notice and this permission notice shall be included in all copies
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-- or substantial portions of the Software.
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-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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-- INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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-- PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
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-- FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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-- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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-- DEALINGS IN THE SOFTWARE.
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if SERVER then return end
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local render = render
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local assert = assert
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local type = type
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local table = table
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local debug = debug
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-- nope, nu stack object, because util.Stack() sux
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local stack = {}
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--[[
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@doc
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@fname render.PushScissorRect
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@args number x, number y, number xEnd, number yEnd
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@desc
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stack based version of !g:render.SetScissorRect
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@enddesc
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]]
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function render.PushScissorRect(x, y, xEnd, yEnd)
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x = assert(type(x) == 'number' and x, 'x must be a number!')
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y = assert(type(y) == 'number' and y, 'y must be a number!')
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xEnd = assert(type(xEnd) == 'number' and xEnd, 'xEnd must be a number!')
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yEnd = assert(type(yEnd) == 'number' and yEnd, 'xEnd must be a number!')
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local amount = #stack
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if amount ~= 0 then
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local x2, y2, xEnd2, yEnd2 = stack[amount - 3], stack[amount - 2], stack[amount - 1], stack[amount]
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x = x2:max(x)
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y = y2:max(y)
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xEnd = xEnd2:min(xEnd)
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yEnd = yEnd2:min(yEnd)
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end
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table.insert(stack, x)
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table.insert(stack, y)
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table.insert(stack, xEnd)
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table.insert(stack, yEnd)
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render.SetScissorRect(x, y, xEnd, yEnd, true)
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end
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--[[
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@doc
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@fname render.PopScissorRect
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@desc
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stack based version of !g:render.SetScissorRect
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@enddesc
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]]
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function render.PopScissorRect()
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if #stack == 0 then
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render.SetScissorRect(0, 0, 0, 0, false)
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return
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end
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if #stack == 4 then
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table.remove(stack)
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table.remove(stack)
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table.remove(stack)
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table.remove(stack)
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render.SetScissorRect(0, 0, 0, 0, false)
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return
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end
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table.remove(stack)
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table.remove(stack)
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table.remove(stack)
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table.remove(stack)
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local amount = #stack
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local x, y, xEnd, yEnd = stack[amount - 3], stack[amount - 2], stack[amount - 1], stack[amount]
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render.SetScissorRect(x, y, xEnd, yEnd, true)
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end
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local function PreRender()
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if #stack ~= 0 then
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stack = {}
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end
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end
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hook.Add('PreRender', 'render.PushScissorRect', PreRender)
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