<function name="EaseInOut" parent="math" type="libraryfunc"> <description>Calculates the progress of a value fraction, taking in to account given easing fractions</description> <realm>Shared and Menu</realm> <file line="74-L99">lua/includes/extensions/math.lua</file> <file line="74-L98">lua/includes/extensions/math.lua</file> <args> <arg name="progress" type="number">Fraction of the progress to ease, from 0 to 1.</arg> <arg name="easeIn" type="number" default="0">Fraction of how much easing to begin with, from 0 to 1.</arg> <arg name="easeOut" type="number" default="1">Fraction of how much easing to end with, from 0 to 1.</arg> </args> <rets> <ret name="" type="number">"Eased" Value, from 0 to 1</ret> </rets> </function> <example> <description>Calculates the easing of three situations</description> <code> print(math.EaseInOut(0.1, 0.1, 0.1)) print(math.EaseInOut(0.2, 0.1, 0.1)) print(math.EaseInOut(0.3, 0.1, 0.1)) </code> <output> 0.055555... 0.166666... 0.277777... </output> </example> <example> <description>Interactive preview of the curve this function can generate.</description> <code> local f = vgui.Create( "DFrame" ) f:SetSize( 500, 500 ) f:Center() f:MakePopup() local sliderIn = vgui.Create( "DNumSlider", f ) sliderIn:Dock( TOP ) sliderIn:SetMinMax( 0, 4 ) sliderIn:SetText( "Ease In" ) local sliderOut = vgui.Create( "DNumSlider", f ) sliderOut:Dock( TOP ) sliderOut:SetMinMax( 0, 4 ) sliderOut:SetText( "Ease Out" ) local sliderMax = vgui.Create( "DNumSlider", f ) sliderMax:Dock( TOP ) sliderMax:SetMinMax( 1, 2 ) sliderMax:SetValue( 1 ) sliderMax:SetText( "Value Range Max" ) local quality = 128 local oldPaint = f.Paint f.Paint = function( pnl, w, h ) oldPaint( pnl, w, h ) surface.SetDrawColor( 255, 0, 0, 255 ) local lastPos = { x = 0, y = 0 } for i=0, quality do local pos = { x = i / quality * pnl:GetWide(), y = math.EaseInOut( math.Remap( i / quality, 0, 1, 0, sliderMax:GetValue() ), sliderIn:GetValue(), sliderOut:GetValue() ) * pnl:GetTall() } surface.DrawLine( lastPos.x, lastPos.y, pos.x, pos.y ) lastPos = pos end local frac = CurTime() % 1 local easeVal = math.EaseInOut( math.Remap( frac, 0, 1, 0, sliderMax:GetValue() ), sliderIn:GetValue(), sliderOut:GetValue() ) surface.DrawCircle( frac * pnl:GetWide(), easeVal * pnl:GetTall(), 4, 255, 255, 255 ) surface.SetDrawColor( 255, 255, 255, easeVal * 255 ) surface.DrawRect( 10, pnl:GetTall() - 10 - 48, 48, 48 ) end </code> <output> <upload src="70c/8dcc90cd6ec7ec8.gif" size="25530" name="August30-494-hl2.gif" /> </output> </example>