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add mat4.idt to maths_inline.lua
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1 changed files with 14 additions and 0 deletions
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@ -238,3 +238,17 @@ function vec2.mix(a, b, t, dest)
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}
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}
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end
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end
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end
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end
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function mat4.idt(dst)
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if dst then
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for i=1,16 do
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dst[i] = (i % 5 == 1) and 1 or 0
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end
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end
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return {
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1, 0, 0, 0,
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0, 1, 0, 0,
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0, 0, 1, 0,
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0, 0, 0, 1
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}
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end
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