vibrating an object

Solar2D General Questions/Discussion
#1

Hi there,

What would be the quickest way to visually vibrate an object given two parameters (amplitude, frequency)?

Thank you

Kaan. [import]uid: 99031 topic_id: 32437 reply_id: 332437[/import]

#2

@MrLama,

Is this the kind of thing you are thinking about?

If so, this is the basic code for it:

createVibroids = function ( parentGroup, x, y )  
 local parentGroup = parentGroup or display.getCurrentStage()  
  
 local vibrateGroup = display.newGroup()  
  
 parentGroup:insert(vibrateGroup)  
  
 local vibrate1  
 local vibrate2  
  
 vibrate1 = function( obj )  
 if not (obj and type(obj.removeSelf) == "function") then  
 return  
 end  
  
 transition.to( obj, { xScale = obj.amplitude, yScale = obj.amplitude, time = 1000/obj.frequency, onComplete=vibrate2 } )  
 end  
  
 vibrate2 = function( obj )  
 if not (obj and type(obj.removeSelf) == "function") then  
 return  
 end  
  
 transition.to( obj, {xScale = 1/obj.amplitude, yScale = 1/obj.amplitude, time = 1000/obj.frequency, onComplete=vibrate1 } )  
 end  
  
 local block = display.newRect(vibrateGroup, 0, 0, 50, 50 )  
 block.amplitude = 1.25  
 block.frequency = 2  
 vibrate1(block)  
  
 block = display.newRect(vibrateGroup, 150, 0, 50, 50 )  
 block.amplitude = 2  
 block.frequency = 1  
 vibrate1(block)  
  
 block = display.newRect(vibrateGroup, 300, 0, 50, 50 )  
 block.amplitude = 2  
 block.frequency = 10  
 vibrate1(block)  
  
 vibrateGroup:setReferencePoint(display.CenterReferencePoint)  
 vibrateGroup.x,vibrateGroup.y = x,y  
  
 return vibrateGroup   
  
end

You can see the whole demo by grabbing SSKCorona and/or by downloading a binary onto your Android/Fire/Nook (sorry now iOS binaries).

[import]uid: 110228 topic_id: 32437 reply_id: 129000[/import]

#3

Note: I pulsed the scale of the objects, but you could just as easily jiggle them left and right or up and down.

-Ed [import]uid: 110228 topic_id: 32437 reply_id: 129001[/import]

#4

@MrLama,

Is this the kind of thing you are thinking about?

If so, this is the basic code for it:

createVibroids = function ( parentGroup, x, y )  
 local parentGroup = parentGroup or display.getCurrentStage()  
  
 local vibrateGroup = display.newGroup()  
  
 parentGroup:insert(vibrateGroup)  
  
 local vibrate1  
 local vibrate2  
  
 vibrate1 = function( obj )  
 if not (obj and type(obj.removeSelf) == "function") then  
 return  
 end  
  
 transition.to( obj, { xScale = obj.amplitude, yScale = obj.amplitude, time = 1000/obj.frequency, onComplete=vibrate2 } )  
 end  
  
 vibrate2 = function( obj )  
 if not (obj and type(obj.removeSelf) == "function") then  
 return  
 end  
  
 transition.to( obj, {xScale = 1/obj.amplitude, yScale = 1/obj.amplitude, time = 1000/obj.frequency, onComplete=vibrate1 } )  
 end  
  
 local block = display.newRect(vibrateGroup, 0, 0, 50, 50 )  
 block.amplitude = 1.25  
 block.frequency = 2  
 vibrate1(block)  
  
 block = display.newRect(vibrateGroup, 150, 0, 50, 50 )  
 block.amplitude = 2  
 block.frequency = 1  
 vibrate1(block)  
  
 block = display.newRect(vibrateGroup, 300, 0, 50, 50 )  
 block.amplitude = 2  
 block.frequency = 10  
 vibrate1(block)  
  
 vibrateGroup:setReferencePoint(display.CenterReferencePoint)  
 vibrateGroup.x,vibrateGroup.y = x,y  
  
 return vibrateGroup   
  
end

You can see the whole demo by grabbing SSKCorona and/or by downloading a binary onto your Android/Fire/Nook (sorry now iOS binaries).

[import]uid: 110228 topic_id: 32437 reply_id: 129000[/import]

#5

Note: I pulsed the scale of the objects, but you could just as easily jiggle them left and right or up and down.

-Ed [import]uid: 110228 topic_id: 32437 reply_id: 129001[/import]

#6

I was after position jiggling but I guess this will do as you said. Thanks very much :slight_smile: [import]uid: 99031 topic_id: 32437 reply_id: 129203[/import]

#7

I was after position jiggling but I guess this will do as you said. Thanks very much :slight_smile: [import]uid: 99031 topic_id: 32437 reply_id: 129203[/import]