k3d/share/shaders/k3d_oakplank.sl:80:		   output float splank, tplank;)
k3d/share/shaders/k3d_oakplank.sl:89:  tplank = newt - twhichplank * planklength;
k3d/share/shaders/k3d_oakplank.sl:129:   * the (splank,tplank) coordinates (both on [0,1]) within our tile.
k3d/share/shaders/k3d_oakplank.sl:131:  float swhichplank, twhichplank, splank, tplank;
k3d/share/shaders/k3d_oakplank.sl:134:			       swhichplank, twhichplank, splank, tplank);
k3d/share/shaders/k3d_oakplank.sl:137:    point(splank - 0.5, height - 0.01 * tplank, tplank) + vector(1, 5,
k3d/share/shaders/k3d_oakplank.sl:156:    smoothpulse(0, edgewidth, planklength - edgewidth, planklength, tplank);
