DgsAddEasingFunction

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This function allow us to add easing functions for DGS animation. And this can only be used with DGS.

Syntax

bool dgsAddEasingFunction ( string name, string functionStr )

Required Arguments

  • name: The name of easing function.
  • functionStr: The string of function to load.

Returns

Returns a true if succeed, false otherwise.

Predefined Variables

  • progress: A float indicates the animation progress, which ranges from 0 to 1.
  • setting: A table has following items.
    • setting[1]: Property Name.
    • setting[2]: Target Value.
    • setting[3]: Initial Value.
    • setting[4]: Index of Start Value if Start Value is an array.
  • self: The dgs element that is using this easing function.
  • propertyTable: A table of the properties of the dgs element. Use this instead of dgsGetProperty if there are performance demands.

Example

DGS = exports.dgs

DGS:dgsAddEasingFunction("test",[[
	return math.abs(progress^2-0.5)*2
]]) --Add easing function named as "test"

parent = DGS:dgsCreateWindow(200,100,400,400,"DGS Parent Window",false)	--Create a window
DGS:dgsSetAlpha(parent,0)
DGS:dgsAlphaTo(parent,1,false,"test",2000)  --set animation with easing function that we added.

See Also

Custom Cursor Functions

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