Function_Ruler

  (subclass of 9.1.3.9 Function_Bar1d)

   GRAPE(Function_Ruler, "new-instance")(spline, fun_arg, var, name, atype)

CLASS *Function_Ruler
SPLINE1D *spline
double *fun_arg
void *var
char *name
DECLARATION_FORMAT atype

Creates a new instance of the class Function_Ruler which is named name. The variable var, which is controlled by the ruler must be of the type defined by atype. If no spline is given (spline == NULL) the Function_Ruler will try to load a spline from a file, whose name is equal to the name of the Function_Ruler and the extension .sp (all spaces in the name are converted to underscores in the filename). If no matching file is found, the Function_Ruler will create a new linear spline. The parameter fun_arg is the argument of the spline function and must be of type double. Most time this argument is the main time or the scene time.