39 lines
2.1 KiB
Markdown
39 lines
2.1 KiB
Markdown
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# Interpolation Functions
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**BeTweenApi.interpolation** is a table that contain interpolation functions, here are listed all of the and what their porpuse is for.
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Each function require a start and end movement to interpolate and the position in time, or something like this:
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function (start: number, end: number, time: float) : number
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Currently interpolation can be done only with numbers (float and integer).
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| Function | Description |
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| -------- | ----------- |
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| linear | straight increment from x to y in time. |
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| quadratic_in | straight increment from x to y in time. |
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| quadratic_out | movement increment slower from x to y in time. |
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| quadratic_in_out | movement is faster between x to y but slow down on begin and end in time. |
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| cubic_in | movement increment faster from x to y in time. |
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| cubic_out | movement increment slower from x to y in time. |
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| cubic_in_out | movement is faster between x to y but slow down on begin and end in time. |
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| quartic_in | movement increment faster from x to y in time. |
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| quartic_out | movement increment slower from x to y in time. |
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| quartic_in_out | movement is faster between x to y but slow down on begin and end in time. |
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| elastic | movement jump from x to y like an elastic, movement is very fast but slow down in time. |
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| sinusoidal_in | movement increment faster from x to y in time, the movement has the shape of a curve. |
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| sinusoidal_out | movement increment faster from x to y in time, the movement has the shape of a curve. |
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| sinusoidal_in_out | movement is faster between x to y but slow down on begin and end in time, the movement has the shape of a curve. |
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| circular_in | movement increment faster esponentially from x to y in time. |
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| circular_out | movement increment slower esponentially from x to y in time. |
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| circular_in_out | movement increment slower from the start to the end but speed up esponentially in the middle. |
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______
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Usage example:
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BeTweenApi.interpolation.linear(0, 4, 0.5) -- 2
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BeTweenApi.interpolation.quadratic_in(0, 8, 0.5) -- 2
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BeTweenApi.interpolation.quadratic_out(0, 8, 0.5) -- 4.5
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