k3d/share/shaders/k3d_stones.sl:102: float cx,cy;
k3d/share/shaders/k3d_stones.sl:117:   rotate2d(s,t,angle,0.5,0.5,cx,cy);    /*randomize rotations*/
k3d/share/shaders/k3d_stones.sl:120:   ss = repeat(cx,freq * tilefreq);
k3d/share/shaders/k3d_stones.sl:122:   stile = whichtile(cx,freq * tilefreq);
k3d/share/shaders/k3d_stones.sl:132:   /*cx = 0.5 + 0.1 * snoise2( 12.312,  21.773);
k3d/share/shaders/k3d_stones.sl:134:   cx = 0.5 + 0.1 * snoise2( freq * 8.456, freq * 18.773);
k3d/share/shaders/k3d_stones.sl:136:   point p1 =(cx,cy,0);
