scanline engine

[vincenzo.maltese]

Hi guys,

i developed my scanline road engine but now i'm blocked

I can not slide the road! the movement is done by simply changing the colors and all this is fine if the road is straight; instead if the road is curved then does not approach  

how can I do?


for(i=0; i < horizon; i++)
{
     get line's x0, calculated with zBuffer and scaleFactor
     get line's x1, calculated with zBuffer and scaleFactor
     get line's color
     draw line with x0...x1...y
}

repeat...the road runs but the curves do not.

Help