Tercio@58: 
Tercio@58: 
Tercio@58: local DF = _G ["DetailsFramework"]
Tercio@58: if (not DF or not DetailsFrameworkCanLoad) then
Tercio@58: 	return 
Tercio@58: end
Tercio@58: 
Tercio@58: local UnitExists = UnitExists
Tercio@58: local atan2 = math.atan2
Tercio@58: local pi = math.pi
Tercio@58: local abs = math.abs 
Tercio@58: 
Tercio@58: SMALL_FLOAT = 0.000001
Tercio@58: 
Tercio@58: --find distance between two players
Tercio@58: function DF:GetDistance_Unit (unit1, unit2)
Tercio@58: 	if (UnitExists (unit1) and UnitExists (unit2)) then
Tercio@58: 		local u1X, u1Y = UnitPosition (unit1)
Tercio@58: 		local u2X, u2Y = UnitPosition (unit2)
Tercio@58: 		
Tercio@58: 		local dX = u2X - u1X
Tercio@58: 		local dY = u2Y - u1Y
Tercio@58: 		
Tercio@58: 		return ((dX*dX) + (dY*dY)) ^ .5
Tercio@58: 	end
Tercio@58: 	return 0
Tercio@58: end
Tercio@58: 
Tercio@58: --find distance between two points
Tercio@58: function DF:GetDistance_Point (x1, y1, x2, y2)
Tercio@58: 	local dx = x2 - x1
Tercio@58: 	local dy = y2 - y1
Tercio@58: 	return ((dx * dx) + (dy * dy)) ^ .5
Tercio@58: end
Tercio@58: 
Tercio@58: --find a rotation for an object from a point to another point
Tercio@58: function DF:FindLookAtRotation (x1, y1, x2, y2)
Tercio@58: 	return atan2 (y2 - y1, x2 - x1) + pi
Tercio@58: end
Tercio@58: 
Tercio@58: --find the value scale between two given values. e.g: value of 500 in a range 0-100 result in 10 in a scale for 0-10
Tercio@58: function DF:MapRangeClamped (inputX, inputY, outputX, outputY, value)
Tercio@58: 	return DF:GetRangeValue (outputX, outputY, Clamp (DF:GetRangePercent (inputX, inputY, value), 0, 1))
Tercio@58: end
Tercio@58: 
Tercio@58: --find the value scale between two given values. e.g: value of 75 in a range 0-100 result in 7.5 in a scale for 0-10
Tercio@58: function DF:MapRangeUnclamped (inputX, inputY, outputX, outputY, value)
Tercio@58: 	return DF:GetRangeValue (outputX, outputY, DF:GetRangePercent (inputX, inputY, value))
Tercio@58: end
Tercio@58: 
Tercio@58: --find the normalized percent of the value in the range. e.g range of 200-400 and a value of 250 result in 0.25
Tercio@58: function DF:GetRangePercent (minValue, maxValue, value)
Tercio@58: 	return (value - minValue) / (maxValue - minValue)
Tercio@58: end
Tercio@58: 
Tercio@58: --find the value in the range given from a normalized percent. e.g range of 200-400 and a percent of 0.8 result in 360
Tercio@58: function DF:GetRangeValue (minValue, maxValue, percent)
Tercio@58: 	return Lerp (minValue, maxValue, percent)
Tercio@58: end
Tercio@58: 
Tercio@58: --dot product of two 2D Vectors
Tercio@58: function DF:GetDotProduct (value1, value2)
Tercio@58: 	return (value1.x * value2.x) + (value1.y * value2.y)
Tercio@58: end
Tercio@58: 
Tercio@58: --normalized value 0-1 result in the value on the range given, e.g 200-400 range with a value of .5 result in 300
Tercio@58: function DF:LerpNorm (minValue, maxValue, value)
Tercio@58: 	return (minValue + value * (maxValue - minValue))
Tercio@58: end
Tercio@58: 
Tercio@58: --change the color by the deltaTime
Tercio@58: function DF:LerpLinearColor (deltaTime, interpSpeed, r1, g1, b1, r2, g2, b2)
Tercio@58: 	deltaTime = deltaTime * interpSpeed
Tercio@58: 	local r = r1 + (r2 - r1) * deltaTime
Tercio@58: 	local g = g1 + (g2 - g1) * deltaTime
Tercio@58: 	local b = b1 + (b2 - b1) * deltaTime
Tercio@58: 	return r, g, b
Tercio@58: end
Tercio@58: 
Tercio@58: --check if a number is near another number by a tolerance
Tercio@58: function DF:IsNearlyEqual (value1, value2, tolerance)
Tercio@58: 	tolerance = tolerance or SMALL_FLOAT
Tercio@58: 	return abs (value1 - value2) <= tolerance
Tercio@58: end
Tercio@58: 
Tercio@58: --check if a number is near zero
Tercio@58: function DF:IsNearlyZero (value, tolerance)
Tercio@58: 	tolerance = tolerance or SMALL_FLOAT
Tercio@58: 	return abs (value) <= tolerance
Tercio@58: end
Tercio@58: 
Tercio@58: --check if a number is within a two other numbers, if isInclusive is true, it'll  include the max value
Tercio@58: function DF:IsWithin (minValue, maxValue, value, isInclusive)
Tercio@58: 	if (isInclusive) then
Tercio@58: 		return ((value >= minValue) and (value <= maxValue))	
Tercio@58: 	else
Tercio@58: 		return ((value >= minValue) and (value < maxValue))
Tercio@58: 	end
Tercio@58: end
Tercio@58: 
Tercio@58: --dont allow a number ot be lower or bigger than a certain range
Tercio@58: function DF:Clamp (minValue, maxValue, value)
Tercio@58: 	return value < minValue and minValue or value < maxValue and value or maxValue
Tercio@58: end
Tercio@58: 
Tercio@58: function DF:ScaleBack ()
Tercio@58: 
Tercio@58: end