Hi Michael,
Thanks for the great sample. I do see what you mean about the inOutQuad not working right. In looking at your examples I do see a difference with the Expo functions but I’m not sure what the Quad functions are doing (looks similar to Linear to me).
I spent some time and modified your code so I could cycle back through the examples one at a time. I’m posting it here because I think others who are learning Lua and Corona SDK might find it useful. Thanks Again.
Tom
[code]
– Project: Easing_Examples
– File: main.Lua
– Author: Michael Hartlef and Tom Newman
– Date: June 6, 2010
– Version: 1.0
– Abstract: An example of using Corona Easing functions
– From MikeHart in Corona Forum
– Easing Functions Start Here
–linear
local function ease1()
if not text1 then
text1 = display.newText( “Linear”, 0, 10, “Verdana-Bold”, 12 )
text1:setTextColor( 255,0,0 )
end
if not circle1 then
circle1 = display.newCircle(20, 60, 10 )
circle1:setFillColor(255,0,0,255)
else
circle1.y = 60
end
transition.to(circle1, {time=3000, y=460})
end
–inOutExpo
local function ease2()
if not text2 then
text2 = display.newText( “inOutExpo”, 45, 30, “Verdana-Bold”, 12 )
text2:setTextColor( 255,0,255 )
end
if not circle2 then
circle2 = display.newCircle(65, 60, 10 )
circle2:setFillColor(255,0,255,255)
else
circle2.y = 60
end
transition.to(circle2, {time=3000, y=460, transition = easing.inOutExpo})
end
–inOutQuad <<<< There seems to be a bug with that function
local function ease3()
if not text3 then
text3 = display.newText( “inOutQuad”, 90, 10, “Verdana-Bold”, 12 )
text3:setTextColor( 255,255,255 )
end
if not circle3 then
circle3 = display.newCircle(110, 60, 10 )
circle3:setFillColor(255,255,255,255)
else
circle3.y = 60
end
transition.to(circle3, {time=3000, y=460, transition = easing.inOutQuad})
end
–outExpo
local function ease4()
if not text4 then
text4 = display.newText( “outExpo”, 135, 30, “Verdana-Bold”, 12 )
text4:setTextColor( 0,255,255 )
end
if not circle4 then
circle4 = display.newCircle(155, 60, 10 )
circle4:setFillColor(0,255,255,255)
else
circle4.y = 60
end
transition.to(circle4, {time=3000, y=460, transition = easing.outExpo})
end
–outQuad
local function ease5()
if not text5 then
text5 = display.newText( “outQuad”, 180, 10, “Verdana-Bold”, 12 )
text5:setTextColor( 0,0,255 )
end
if not circle5 then
circle5 = display.newCircle(200, 60, 10 )
circle5:setFillColor(0,0,255,255)
else
circle5.y = 60
end
transition.to(circle5, {time=3000, y=460, transition = easing.outQuad})
end
–inExpo
local function ease6()
if not text6 then
text6 = display.newText( “inExpo”, 225, 30, “Verdana-Bold”, 12 )
text6:setTextColor( 255,255,0 )
end
if not circle6 then
circle6 = display.newCircle(245, 60, 10 )
circle6:setFillColor(255,255,0,255)
else
circle6.y = 60
end
transition.to(circle6, {time=3000, y=460, transition = easing.inExpo})
end
–inQuad
local function ease7()
if not text7 then
text7 = display.newText( “inQuad”, 270, 10, “Verdana-Bold”, 12 )
text7:setTextColor( 0,255,0 )
end
if not circle7 then
circle7 = display.newCircle(290, 60, 10 )
circle7:setFillColor(0,255,0,255)
else
circle7.y = 60
end
transition.to(circle7, {time=3000, y=460, transition = easing.inQuad})
end
– Code Excution Start Here
– 0 = start all Easing samples; 1 to 7 = individual easing sample
local currentEasing = 0
display.setStatusBar( display.HiddenStatusBar )
local bkgd = display.newRect( 0, 0, display.stageWidth, display.stageHeight )
bkgd:setFillColor( 0, 0, 0 ) – black background
– Table of functions for each Easing example
trans = {ease1, ease2, ease3, ease4, ease5, ease6, ease7}
local text = display.newText( “Tap to start the Easing samples”, 0, 0, nil, 16 )
text:setTextColor( 255, 255, 255 )
text.x = 0.5 * display.stageWidth
text.y = 0.5 * display.stageHeight
– Tapping the first time starts all the Easing samples
– Each tap after the first cycles through each Easing function
local listener = function( event )
if currentEasing == 0 then
– Start all the transitions at once
ease1(); ease2(); ease3(); ease4(); ease5(); ease6(); ease7()
text.text = “Tap to cycle through Easing functions”
else
transcurrentEasing – do one Easing function at a time
end
currentEasing = currentEasing + 1
if currentEasing > 7 then currentEasing = 1 end
end
– Add listener to background for user “tap”
bkgd:addEventListener( “tap”, listener )
[/code] [import]uid: 6119 topic_id: 1121 reply_id: 2877[/import]
