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Purpose:
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Defines a two-ends form of a variable radius function.
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Derivation:
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var_rad_two_ends : var_radius : ACIS_OBJECT : -
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SAT Identifier:
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"two_ends"
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Filename:
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kern/kernel/sg_husk/vrbln/var_rad.hxx
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Description:
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This class defines a variable radius function that varies linearly between two end values.
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Constructor:
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public: var_rad_two_ends::var_rad_two_ends
();
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C++ allocation constructor requests memory for this object but does not populate it.
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public: var_rad_two_ends::var_rad_two_ends
(
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double start_rad,
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// start radius
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double end_rad
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// end radius
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);
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C++ initialize constructor requests memory for this object and populates it with the data supplied as arguments.
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public: var_rad_two_ends::var_rad_two_ends
(
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var_rad_two_ends const& old
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// old
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);
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C++ copy constructor requests memory for this object and populates it with the data from the object supplied as an argument.
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Destructor:
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public: virtual
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var_rad_two_ends::~var_rad_two_ends ();
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C++ destructor, deleting a
var_rad_two_ends.
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Methods:
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public: virtual void var_rad_two_ends::append
(
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var_radius&
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// variable radius
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);
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Appends the given
var_radius.
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public: virtual var_radius* var_rad_two_ends::copy
(
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void
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// pointer to data
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) const;
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Copies a
var_rad_two_ends.
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public: virtual void var_rad_two_ends::debug
(
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const char* leader,
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// leader string
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FILE* fp
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// file pointer
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= debug_file_ptr
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) const;
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Outputs a title line and information about
var_rad_two_ends to the debug file or to the specified file.
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public: virtual double
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var_rad_two_ends::end_deriv1 () const;
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Returns the first derivative at the end parameter.
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public: double var_rad_two_ends::end_rad
() const;
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Returns the end radius datum.
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public: virtual double
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var_rad_two_ends::end_radius () const;
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Returns the radius at the end parameter.
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public: virtual void var_rad_two_ends::eval
(
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double v_param,
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// point
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double* val
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// variable radius
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= NULL,
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double* der1
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// first derivative
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= NULL,
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double* der2
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// second derivative
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= NULL,
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double* der3
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// third derivative
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= NULL
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) const;
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Evaluate a variable radius at a given parameter value.
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public: virtual int var_rad_two_ends::form
() const;
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Returns the form
TWO_ENDS.
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public: virtual logical
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var_rad_two_ends::implicit_var_radius () const;
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Returns
FALSE for a
var_rad_two_ends.
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public: virtual logical
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var_rad_two_ends:: is_constant (
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double* const_rad_value
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// tolerance
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) const;
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Determines whether the input is constant.
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public: virtual logical var_rad_two_ends::is_zero
(
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double eps
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// zero tolerance
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) const;
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Returns
TRUE if a radius function is zero everywhere, to within a given tolerance; otherwise, it returns
FALSE.
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public: virtual bs2_curve
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var_rad_two_ends::make_bs2 () const;
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Returns a
bs2_curve representation of this radius function.
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public: virtual void var_rad_two_ends::negate
();
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Reverses this variable radius, front to back.
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public: virtual logical
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var_rad_two_ends::operator!= (
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var_radius const& other
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// variable radius
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) const;
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Determines whether a
var_rad_two_ends and a
var_radius are not equal.
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public: virtual void var_rad_two_ends::operator*=
(
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SPAtransf const&
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// transformation
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);
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Transforms the
var_rad_two_ends by the given transformation.
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public: virtual logical
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var_rad_two_ends::operator== (
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var_radius const& other
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// variable radius
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) const;
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Implements an assignment operator, which tests to see if a .var_rad_two_ends is equal to a
var_radius
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public: virtual void
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var_rad_two_ends::restore_data ();
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Restore the data for a
var_rad_two_ends from a save file.
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var_radius::restore_data
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Generic information
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read_real
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start radius data
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read_real
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end radius data
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public: virtual void var_rad_two_ends::save
() const;
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Calls
var_radius save_data method, then saves the start and end radius data.
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public: void var_rad_two_ends::set_end_rad
(
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double new_rad
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// new radius
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);
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Sets a new value for the end radius.
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public: void var_rad_two_ends::set_start_rad
(
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double new_rad
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// new radius
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);
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Sets a new value for the start radius.
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public: virtual void var_rad_two_ends::split
(
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double param,
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// point of split
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var_radius* pieces[2]
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// array of 2 var_radii
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);
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Splits a
var_rad_two_ends into two pieces at the given point.
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public: virtual double
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var_rad_two_ends::start_deriv1 () const;
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Returns the first derivative at the start parameter.
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public: double var_rad_two_ends::start_rad
() const;
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Returns the start radius datum.
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public: virtual double
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var_rad_two_ends::start_radius () const;
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Returns the radius at the start parameter.
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public: virtual void
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var_rad_two_ends::trim_to_range (
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SPAinterval
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// interval
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);
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Trims the radius to the given interval.
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public: virtual char const*
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var_rad_two_ends::type_name () const;
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Returns the string "two_ends".
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public: virtual logical
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var_rad_two_ends::zero_end_deriv1 (
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logical,
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// at start point if true
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double tol
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// tolerance
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= SPAresabs
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) const;
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Returns
TRUE if the first derivative at the start or end point of the
var_rad_two_ends is zero (i.e., less than SPAresabs).
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public: virtual logical
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var_rad_two_ends::zero_end_radius (
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logical at_start,
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// at start point if true
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double tol
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// tolerance
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= SPAresabs
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) const;
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Returns
TRUE if the radius at the start or end point of the
var_rad_two_ends is zero (i.e., less than SPAresabs).
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Related Fncs:
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bs2_radius_is_zero
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