LÖVE

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Something like this?

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Example: function rotatingRectangle( mode,x,y,w,h,a,ox,oy,r ) ox = ox or 0 -- if ox & oy not provided, rotate around upper left corner oy = oy or 0 -- if ox,oy = w/2,h/2 then rotation is around center a = a or 0 -- if no angle provided, angle assumed to be zero r = r or 5 -- corner radius love.g...

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I'm not too good with pattern matching but what's wrong with:

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str = 'wood|1000'
sep = string.find( str, '|' )
word, value = string.sub( str, 1, sep-1 ), str:sub( sep+1, #str )

or maybe

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word, value = string.match(str, "(%a+)|(%d+)")

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Was able to fix constant speed issue for spline but not for Bezier curve.
For what it's worth (drag points to see that speed remains constant)
Best

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May be something like you want. (old love with extraneous code)
Click on control points to see effect,

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Happened to me as well when I upgraded to Windows 10.
Had to return to Windows 7.

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As per your request.
Best

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If you want to use push and pop, this might help you????

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Something like this?

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Simple. With orbit center (cx,cy), orbit radii (rx,ry) and angle, calculate the new location of the object.

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function orbit( cx, cy, rx, ry, an )
	local x = rx * math.cos( an ) + cx
	local y = ry * math.sin( an ) + cy
	return x, y
end

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