hi,
I have a physical circle that has a transition. I want to calculate its radius at a certain point of the transition (when the touch event is cancelled) so I can make an exact copy of it.
I’ve tried doing object.width/2 but the transition screws it up…
is there a way to calculate it? or perhaps copy the object somehow?
thank you…
You have to set the circle’s radius when creating a circle (presuming you’re using display.newCircle?); so simply store that value as a property of the display object, e.g:
local circle = display.newCircle(100,100,10)
circle.radius = 10
Not entirely sure if that’s what you’re after, but if you post some code I’m sure we’ll get there.
I need a variable that can change according to the object’s radius, which is changing all the time…
this is the code
function newBall(ref)
bT={}
refY=ref.y-70
ball=display.newCircle(ref.x, refY,20)
ball.alpha=0.5
ball:setReferencePoint(display.CenterReferencePoint)
physics.addBody(ball, “static”, {isSensor=true})
–this is the part where I transition the original circle
function ballIncrease()
tweenReference = transition.to( ball, {time=2000, xScale=9, yScale=9} )
end
function ballReturn()
transition.to( ball, {time=100,xScale=1, yScale=1} )
transition.cancel(tweenReference)
end
function removeBallref()
for i = #bT, 1, -1 do
local object = bT[i]
local child = table.remove(bT, i)
if child ~= nil then
child:removeSelf()
child = nil
end
end
end
function ballRef(ball)
bx=ball.x
by=ball.y
ballref=display.newCircle(bx,by,ballRad) --this is the part where i create the circle reference and need its radius
ballref.myName=“ball”
ballref.alpha=0.5
table.insert(bT,ballref)
physics.addBody(ballref,“static”, {isSensor=true})
ballref.myName=“ball”
return ballref
end
function onTouch( event )
if(event.phase == “began”)then
ballIncrease()
elseif (event.phase == “ended” or event.phase == “cancelled”) then
ballReturn()
ballRef(ball)
timer.performWithDelay(30,removeBallref)
end
end
Runtime:addEventListener( “touch”, onTouch )
return ball
end
object.width doesn’t seem to change with scale. It stays static at the original size. object.contentWidth changes according to the scaling. Try using that.
You have to set the circle’s radius when creating a circle (presuming you’re using display.newCircle?); so simply store that value as a property of the display object, e.g:
local circle = display.newCircle(100,100,10)
circle.radius = 10
Not entirely sure if that’s what you’re after, but if you post some code I’m sure we’ll get there.
I need a variable that can change according to the object’s radius, which is changing all the time…
this is the code
function newBall(ref)
bT={}
refY=ref.y-70
ball=display.newCircle(ref.x, refY,20)
ball.alpha=0.5
ball:setReferencePoint(display.CenterReferencePoint)
physics.addBody(ball, “static”, {isSensor=true})
–this is the part where I transition the original circle
function ballIncrease()
tweenReference = transition.to( ball, {time=2000, xScale=9, yScale=9} )
end
function ballReturn()
transition.to( ball, {time=100,xScale=1, yScale=1} )
transition.cancel(tweenReference)
end
function removeBallref()
for i = #bT, 1, -1 do
local object = bT[i]
local child = table.remove(bT, i)
if child ~= nil then
child:removeSelf()
child = nil
end
end
end
function ballRef(ball)
bx=ball.x
by=ball.y
ballref=display.newCircle(bx,by,ballRad) --this is the part where i create the circle reference and need its radius
ballref.myName=“ball”
ballref.alpha=0.5
table.insert(bT,ballref)
physics.addBody(ballref,“static”, {isSensor=true})
ballref.myName=“ball”
return ballref
end
function onTouch( event )
if(event.phase == “began”)then
ballIncrease()
elseif (event.phase == “ended” or event.phase == “cancelled”) then
ballReturn()
ballRef(ball)
timer.performWithDelay(30,removeBallref)
end
end
Runtime:addEventListener( “touch”, onTouch )
return ball
end
object.width doesn’t seem to change with scale. It stays static at the original size. object.contentWidth changes according to the scaling. Try using that.