= rgb2iuv =
== Syntax == int rgb2iuv(int r, int g, int b, int z) == Arguments == :r ::Red value :g ::Green value :b ::Blue value :z ::Determines which value is returned. z=0 for i, z=1 for u, z=2 for v == Return == Returns the i, u or v value depending on the value of z == Description == Lets you convert RGB values to YUV values. == Example == <code> %ffp ctl(0): "Y Adjust",range=(-255,255),val=0 ctl(1): "U Adjust",range=(-255,255),val=0 ctl(2): "V Adjust",range=(-255,255),val=0 ForEveryTile: {int r,g,b,i,u,v; for (y = y_start; y < y_end; y++) { updateProgress(y,y_end); for (x = x_start; x < x_end; x++) { r=src(x,y,0); g=src(x,y,1); b=src(x,y,2); i=rgb2iuv(r,g,b,0) + ctl(0); u=rgb2iuv(r,g,b,1) + ctl(1); v=rgb2iuv(r,g,b,2) + ctl(2); r=iuv2rgb(i,u,v,0); g=iuv2rgb(i,u,v,1); b=iuv2rgb(i,u,v,2); pset(x, y, 0, r); pset(x, y, 1, g); pset(x, y, 2, b); } } return true; }</code> == See Also == == Comments == Everyone can add his comments about his experiences with this function here. Tips for using it are welcome, too. |