reverseTransformFunctionFP

Reverse transform function, returns the point where a given texel needs to be written. The function reads as: [x',y'] = [A,B,C,D] * ([x,y] + [sX,sY] - [x_0,y_0]) + [x_0,y_0] ABCD: A/0: Horizontal scaling. 1 means no scaling at all, negative values end up in a mirrored image. B/1: Horizontal shearing. 0 means no shearing at all. C/2: Vertical shearing. 0 means no shearing at all. D/3: Vertical scaling. 1 means no scaling at all, negative values end up in a mirrored image. </ br> xy: Contains the screen coordinates. x:0 y:1 </ br> x0y0: Origin point. x_0:0/2 y_0:1/3 </ br> sXsY: Scrolling point. sX:0/2 sY:1/3

@nogc
int[2]
reverseTransformFunctionFP
(
int[2] xy
,
float[4] ABCD
,
int[4] x0y0
,
float[4] sXsY
)

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