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This is a set of zero or more ParametricCurves, which may or may not be related. More...
#include "parametricCurveCollection.h"
Public Member Functions | |
void | add_curve (ParametricCurve *curve, int index) |
Adds a new ParametricCurve to the collection at the indicated index. | |
void | add_curve (ParametricCurve *curve) |
Adds a new ParametricCurve to the collection. | |
int | add_curves (PandaNode *node) |
Adds all the curves found in the scene graph rooted at the given node. | |
bool | adjust_hpr (PN_stdfloat t, const LVecBase3 &xyz) |
Adjust the HPR curve at the indicated time to the new value. | |
bool | adjust_hpr (PN_stdfloat t, PN_stdfloat h, PN_stdfloat p, PN_stdfloat r) |
Adjust the HPR curve at the indicated time to the new value. | |
bool | adjust_xyz (PN_stdfloat t, PN_stdfloat x, PN_stdfloat y, PN_stdfloat z) |
Adjust the XYZ curve at the indicated time to the new value. | |
bool | adjust_xyz (PN_stdfloat t, const LVecBase3 &xyz) |
Adjust the XYZ curve at the indicated time to the new value. | |
void | clear () |
Removes all ParametricCurves from the collection. | |
void | clear_timewarps () |
Removes all the timewarp curves from the collection. | |
bool | evaluate (PN_stdfloat t, LVecBase3 &xyz, LVecBase3 &hpr) const |
Computes the position and rotation represented by the first XYZ and HPR curves in the collection at the given point t, after t has been modified by all the timewarp curves in the collection applied in sequence, from back to front. | |
bool | evaluate (PN_stdfloat t, LMatrix4 &result, CoordinateSystem cs=CS_default) const |
Computes the transform matrix representing translation to the position indicated by the first XYZ curve in the collection and the rotation indicated by the first HPR curve in the collection, after t has been modified by all the timewarp curves in the collection applied in sequence, from back to front. | |
bool | evaluate_hpr (PN_stdfloat t, LVecBase3 &hpr) const |
Computes only the HPR part of the curves. | |
PN_stdfloat | evaluate_t (PN_stdfloat t) const |
Determines the value of t that should be passed to the XYZ and HPR curves, after applying the given value of t to all the timewarps. | |
bool | evaluate_xyz (PN_stdfloat t, LVecBase3 &xyz) const |
Computes only the XYZ part of the curves. | |
void | face_forward (PN_stdfloat segments_per_unit) |
Discards the existing HPR curve and generates a new one that looks in the direction of travel along the XYZ curve, based on the XYZ curve's tangent at each point. | |
ParametricCurve * | get_curve (int index) const |
Returns the nth ParametricCurve in the collection. | |
ParametricCurve * | get_default_curve () const |
If there is an XYZ curve in the collection, returns it; otherwise, returns the first curve whose type is unspecified. | |
ParametricCurve * | get_hpr_curve () const |
Returns the first HPR curve in the collection, if any, or NULL if there are none. | |
PN_stdfloat | get_max_t () const |
Returns the maximum T value associated with the last* curve in the collection. | |
int | get_num_curves () const |
Returns the number of ParametricCurves in the collection. | |
int | get_num_timewarps () const |
Returns the number of timewarp curves in the collection. | |
ParametricCurve * | get_timewarp_curve (int n) const |
Returns the nth timewarp curve in the collection. | |
ParametricCurve * | get_xyz_curve () const |
Returns the first XYZ curve in the collection, if any, or NULL if there are none. | |
bool | has_curve (ParametricCurve *curve) const |
Returns true if the indicated ParametricCurve appears in this collection, false otherwise. | |
void | make_even (PN_stdfloat max_t, PN_stdfloat segments_per_unit) |
Discards all existing timewarp curves and recomputes a new timewarp curve that maps distance along the curve to parametric time, so that the distance between any two points in parametric time is proportional to the approximate distance of those same two points along the XYZ curve. | |
MAKE_SEQ (get_timewarp_curves, get_num_timewarps, get_timewarp_curve) | |
MAKE_SEQ (get_curves, get_num_curves, get_curve) | |
void | output (ostream &out) const |
Writes a brief one-line description of the ParametricCurveCollection to the indicated output stream. | |
int | r_add_curves (PandaNode *node) |
The recursive implementation of add_curves(). | |
bool | recompute () |
Ensures all the curves are freshly computed and up-to-date. | |
void | register_drawer (ParametricCurveDrawer *drawer) |
Registers a Drawer with this curve collection that will automatically be updated whenever the collection is modified, so that the visible representation of the curve is kept up to date. | |
bool | remove_curve (ParametricCurve *curve) |
Removes the indicated ParametricCurve from the collection. | |
void | remove_curve (int index) |
Removes the indicated ParametricCurve from the collection, by its index number. | |
void | reset_max_t (PN_stdfloat max_t) |
Adjusts the apparent length of the curve by applying a new timewarp that maps the range [0..max_t] to the range [0..get_max_t()]. | |
bool | stitch (const ParametricCurveCollection *a, const ParametricCurveCollection *b) |
Regenerates this curve as one long curve: the first curve connected end-to-end with the second one. | |
void | unregister_drawer (ParametricCurveDrawer *drawer) |
Removes a previously registered drawer from the list of automatically-refreshed drawers. | |
void | write (ostream &out, int indent_level=0) const |
Writes a complete multi-line description of the ParametricCurveCollection to the indicated output stream. | |
bool | write_egg (ostream &out, const Filename &filename, CoordinateSystem cs) |
Writes an egg description of all the nurbs curves in the collection to the specified output stream. | |
bool | write_egg (Filename filename, CoordinateSystem cs=CS_default) |
Writes an egg description of all the nurbs curves in the collection to the specified output file. |
This is a set of zero or more ParametricCurves, which may or may not be related.
If they are related, the set should contain no more than one XYZ curve, no more than one HPR curve, and zero or more Timewarp curves, which can then be evaluated as a unit to return a single transformation matrix for a given unit of time.
Definition at line 41 of file parametricCurveCollection.h.
void ParametricCurveCollection::add_curve | ( | ParametricCurve * | curve | ) |
Adds a new ParametricCurve to the collection.
Definition at line 40 of file parametricCurveCollection.cxx.
Referenced by face_forward(), make_even(), reset_max_t(), and stitch().
void ParametricCurveCollection::add_curve | ( | ParametricCurve * | curve, |
int | index | ||
) |
Adds a new ParametricCurve to the collection at the indicated index.
Definition at line 53 of file parametricCurveCollection.cxx.
int ParametricCurveCollection::add_curves | ( | PandaNode * | node | ) |
Adds all the curves found in the scene graph rooted at the given node.
Returns the number of curves found.
Definition at line 68 of file parametricCurveCollection.cxx.
References r_add_curves().
bool ParametricCurveCollection::adjust_hpr | ( | PN_stdfloat | t, |
PN_stdfloat | h, | ||
PN_stdfloat | p, | ||
PN_stdfloat | r | ||
) | [inline] |
Adjust the HPR curve at the indicated time to the new value.
The curve shape will change correspondingly. Returns true if successful, false if unable to make the adjustment for some reason.
Definition at line 108 of file parametricCurveCollection.I.
bool ParametricCurveCollection::adjust_hpr | ( | PN_stdfloat | t, |
const LVecBase3 & | hpr | ||
) |
Adjust the HPR curve at the indicated time to the new value.
The curve shape will change correspondingly. Returns true if successful, false if unable to make the adjustment for some reason.
Definition at line 632 of file parametricCurveCollection.cxx.
References ParametricCurve::adjust_point(), evaluate_t(), get_hpr_curve(), and get_max_t().
bool ParametricCurveCollection::adjust_xyz | ( | PN_stdfloat | t, |
PN_stdfloat | x, | ||
PN_stdfloat | y, | ||
PN_stdfloat | z | ||
) | [inline] |
Adjust the XYZ curve at the indicated time to the new value.
The curve shape will change correspondingly. Returns true if successful, false if unable to make the adjustment for some reason.
Definition at line 95 of file parametricCurveCollection.I.
bool ParametricCurveCollection::adjust_xyz | ( | PN_stdfloat | t, |
const LVecBase3 & | xyz | ||
) |
Adjust the XYZ curve at the indicated time to the new value.
The curve shape will change correspondingly. Returns true if successful, false if unable to make the adjustment for some reason.
Definition at line 610 of file parametricCurveCollection.cxx.
References ParametricCurve::adjust_point(), evaluate_t(), get_max_t(), and get_xyz_curve().
void ParametricCurveCollection::clear | ( | ) |
Removes all ParametricCurves from the collection.
Definition at line 142 of file parametricCurveCollection.cxx.
Referenced by stitch().
void ParametricCurveCollection::clear_timewarps | ( | ) |
Removes all the timewarp curves from the collection.
Definition at line 159 of file parametricCurveCollection.cxx.
References ParametricCurve::get_curve_type().
Referenced by make_even().
Computes the position and rotation represented by the first XYZ and HPR curves in the collection at the given point t, after t has been modified by all the timewarp curves in the collection applied in sequence, from back to front.
Returns true if the point is valid (i.e. t is within the bounds indicated by all the timewarp curves and within the bounds of the curves themselves), or false otherwise.
Definition at line 486 of file parametricCurveCollection.cxx.
References ParametricCurve::get_curve_type().
Referenced by evaluate(), evaluate_hpr(), evaluate_xyz(), and CurveFitter::sample().
bool ParametricCurveCollection::evaluate | ( | PN_stdfloat | t, |
LMatrix4 & | result, | ||
CoordinateSystem | cs = CS_default |
||
) | const |
Computes the transform matrix representing translation to the position indicated by the first XYZ curve in the collection and the rotation indicated by the first HPR curve in the collection, after t has been modified by all the timewarp curves in the collection applied in sequence, from back to front.
Returns true if the point is valid (i.e. t is within the bounds indicated by all the timewarp curves and within the bounds of the curves themselves), or false otherwise.
Definition at line 558 of file parametricCurveCollection.cxx.
References evaluate().
bool ParametricCurveCollection::evaluate_hpr | ( | PN_stdfloat | t, |
LVecBase3 & | hpr | ||
) | const [inline] |
Computes only the HPR part of the curves.
See evaluate().
Definition at line 81 of file parametricCurveCollection.I.
References evaluate().
PN_stdfloat ParametricCurveCollection::evaluate_t | ( | PN_stdfloat | t | ) | const |
Determines the value of t that should be passed to the XYZ and HPR curves, after applying the given value of t to all the timewarps.
Return -1.0f if the value of t exceeds one of the timewarps' ranges.
Definition at line 582 of file parametricCurveCollection.cxx.
References ParametricCurve::get_curve_type().
Referenced by adjust_hpr(), and adjust_xyz().
bool ParametricCurveCollection::evaluate_xyz | ( | PN_stdfloat | t, |
LVecBase3 & | xyz | ||
) | const [inline] |
Computes only the XYZ part of the curves.
See evaluate().
Definition at line 69 of file parametricCurveCollection.I.
References evaluate().
void ParametricCurveCollection::face_forward | ( | PN_stdfloat | segments_per_unit | ) |
Discards the existing HPR curve and generates a new one that looks in the direction of travel along the XYZ curve, based on the XYZ curve's tangent at each point.
Definition at line 390 of file parametricCurveCollection.cxx.
References add_curve(), CurveFitter::add_hpr(), CurveFitter::compute_tangents(), ParametricCurve::get_curve_type(), get_max_t(), get_xyz_curve(), and CurveFitter::wrap_hpr().
ParametricCurve * ParametricCurveCollection::get_curve | ( | int | index | ) | const [inline] |
Returns the nth ParametricCurve in the collection.
Definition at line 41 of file parametricCurveCollection.I.
ParametricCurve * ParametricCurveCollection::get_default_curve | ( | ) | const |
If there is an XYZ curve in the collection, returns it; otherwise, returns the first curve whose type is unspecified.
Returns NULL if no curve meets the criteria.
Definition at line 244 of file parametricCurveCollection.cxx.
References ParametricCurve::get_curve_type(), and get_xyz_curve().
ParametricCurve * ParametricCurveCollection::get_hpr_curve | ( | ) | const |
Returns the first HPR curve in the collection, if any, or NULL if there are none.
Definition at line 224 of file parametricCurveCollection.cxx.
References ParametricCurve::get_curve_type().
Referenced by adjust_hpr(), CurveFitter::sample(), and stitch().
PN_stdfloat ParametricCurveCollection::get_max_t | ( | ) | const [inline] |
Returns the maximum T value associated with the last* curve in the collection.
Normally, this will be either the XYZ or HPR curve, or a timewarp curve.
Definition at line 55 of file parametricCurveCollection.I.
Referenced by adjust_hpr(), adjust_xyz(), face_forward(), reset_max_t(), and CurveFitter::sample().
int ParametricCurveCollection::get_num_curves | ( | ) | const [inline] |
Returns the number of ParametricCurves in the collection.
Definition at line 31 of file parametricCurveCollection.I.
Referenced by output().
int ParametricCurveCollection::get_num_timewarps | ( | ) | const |
Returns the number of timewarp curves in the collection.
Definition at line 267 of file parametricCurveCollection.cxx.
References ParametricCurve::get_curve_type().
ParametricCurve * ParametricCurveCollection::get_timewarp_curve | ( | int | n | ) | const |
Returns the nth timewarp curve in the collection.
Definition at line 287 of file parametricCurveCollection.cxx.
References ParametricCurve::get_curve_type().
ParametricCurve * ParametricCurveCollection::get_xyz_curve | ( | ) | const |
Returns the first XYZ curve in the collection, if any, or NULL if there are none.
Definition at line 206 of file parametricCurveCollection.cxx.
References ParametricCurve::get_curve_type().
Referenced by adjust_xyz(), face_forward(), get_default_curve(), make_even(), CurveFitter::sample(), and stitch().
bool ParametricCurveCollection::has_curve | ( | ParametricCurve * | curve | ) | const |
Returns true if the indicated ParametricCurve appears in this collection, false otherwise.
Definition at line 126 of file parametricCurveCollection.cxx.
void ParametricCurveCollection::make_even | ( | PN_stdfloat | max_t, |
PN_stdfloat | segments_per_unit | ||
) |
Discards all existing timewarp curves and recomputes a new timewarp curve that maps distance along the curve to parametric time, so that the distance between any two points in parametric time is proportional to the approximate distance of those same two points along the XYZ curve.
segments_per_unit represents the number of segments to take per each unit of parametric time of the original XYZ curve.
The new timewarp curve (and thus, the apparent range of the collection) will range from 0 to max_t.
Definition at line 320 of file parametricCurveCollection.cxx.
References add_curve(), CurveFitter::add_xyz(), ParametricCurve::calc_length(), clear_timewarps(), CurveFitter::compute_tangents(), ParametricCurve::find_length(), ParametricCurve::get_max_t(), get_xyz_curve(), and ParametricCurve::set_curve_type().
void ParametricCurveCollection::output | ( | ostream & | out | ) | const |
Writes a brief one-line description of the ParametricCurveCollection to the indicated output stream.
Definition at line 716 of file parametricCurveCollection.cxx.
References get_num_curves().
int ParametricCurveCollection::r_add_curves | ( | PandaNode * | node | ) |
The recursive implementation of add_curves().
Definition at line 852 of file parametricCurveCollection.cxx.
References PandaNode::get_child(), PandaNode::get_num_children(), and TypedObject::is_of_type().
Referenced by add_curves().
bool ParametricCurveCollection::recompute | ( | ) |
Ensures all the curves are freshly computed and up-to-date.
Returns true if everything is valid, false if at least one curve is incorrect.
Definition at line 653 of file parametricCurveCollection.cxx.
References ParametricCurve::recompute().
void ParametricCurveCollection::register_drawer | ( | ParametricCurveDrawer * | drawer | ) |
Registers a Drawer with this curve collection that will automatically be updated whenever the collection is modified, so that the visible representation of the curve is kept up to date.
This is called automatically by the ParametricCurveDrawer.
Any number of Drawers may be registered with a particular curve collection.
Definition at line 884 of file parametricCurveCollection.cxx.
References ParametricCurve::register_drawer().
bool ParametricCurveCollection::remove_curve | ( | ParametricCurve * | curve | ) |
Removes the indicated ParametricCurve from the collection.
Returns true if the curve was removed, false if it was not a member of the collection.
Definition at line 86 of file parametricCurveCollection.cxx.
void ParametricCurveCollection::remove_curve | ( | int | index | ) |
Removes the indicated ParametricCurve from the collection, by its index number.
Definition at line 111 of file parametricCurveCollection.cxx.
void ParametricCurveCollection::reset_max_t | ( | PN_stdfloat | max_t | ) |
Adjusts the apparent length of the curve by applying a new timewarp that maps the range [0..max_t] to the range [0..get_max_t()].
After this call, the curve collection will contain one more timewarp curve, and get_max_t() will return the given max_t value.
Definition at line 456 of file parametricCurveCollection.cxx.
References add_curve(), get_max_t(), and ParametricCurve::set_curve_type().
bool ParametricCurveCollection::stitch | ( | const ParametricCurveCollection * | a, |
const ParametricCurveCollection * | b | ||
) |
Regenerates this curve as one long curve: the first curve connected end-to-end with the second one.
Either a or b may be the same as 'this'. This will lose any timewarps on the input curves.
Returns true if successful, false on failure.
Definition at line 678 of file parametricCurveCollection.cxx.
References add_curve(), clear(), get_hpr_curve(), get_xyz_curve(), and ParametricCurve::set_curve_type().
void ParametricCurveCollection::unregister_drawer | ( | ParametricCurveDrawer * | drawer | ) |
Removes a previously registered drawer from the list of automatically-refreshed drawers.
This is called automatically by the ParametricCurveDrawer.
Definition at line 902 of file parametricCurveCollection.cxx.
References ParametricCurve::unregister_drawer().
void ParametricCurveCollection::write | ( | ostream & | out, |
int | indent_level = 0 |
||
) | const |
Writes a complete multi-line description of the ParametricCurveCollection to the indicated output stream.
Definition at line 731 of file parametricCurveCollection.cxx.
bool ParametricCurveCollection::write_egg | ( | Filename | filename, |
CoordinateSystem | cs = CS_default |
||
) |
Writes an egg description of all the nurbs curves in the collection to the specified output file.
Returns true if the file is successfully written.
Definition at line 747 of file parametricCurveCollection.cxx.
References Filename::open_write(), and Filename::set_text().
bool ParametricCurveCollection::write_egg | ( | ostream & | out, |
const Filename & | filename, | ||
CoordinateSystem | cs | ||
) |
Writes an egg description of all the nurbs curves in the collection to the specified output stream.
Returns true if the file is successfully written.
Definition at line 767 of file parametricCurveCollection.cxx.
References Filename::get_basename_wo_extension(), ParametricCurve::get_curve_type(), Namable::has_name(), and ParametricCurve::write_egg().