hrc_blade_angle - calculate the HRC shutter blade angles needed to intersect a point.
hrc_blade_angle [--param=value ...]
hrc_blade_angle uses the Perl Getopt::Long package which adheres to the POSIX syntax for command line options, with GNU extensions. Options may take optional arguments, which are symbolically shown below enclosed in square brackets. Optional arguments may be appended to the option with an equals sign, or may be separated from it by white space.
Y coordinate of the point to intersect.
Z coordinate of the point to intersect.
Name of the output file. Defaults to 'stdout' for STDOUT stream.
A boolean switch. If present, print this help information and exit.
A boolean switch. If present, write version information to UNIX standard output stream and exit.
hrc_blade_angle determines the rotation angles and open angle between the two HRC shutter blades. It determines the rotation angle necessary to intersect the given point, (y, z), then calculates the open angle between the two blades.
Open angle and rotation angles are calculated for each quadrant.
M. Tibbetts ( mtibbetts@cfa.harvard.edu )