Subversion Repositories DIN Is Noise

/*

* hit.h

* DIN Is Noise is copyright (c) 2006-2024 Jagannathan Sampath

* DIN Is Noise is released under GNU Public License 2.0

* For more information, please visit https://dinisnoise.org/

*/

#ifndef __hit

#define __hit

#include "point.h"

#include "multi_curve.h"

struct multi_curve;

struct hit_t {

  multi_curve* crv; // curve hit

  int crv_id; // id among list of curves

  enum {NONE = 0, VERTEX, LEFT_TANGENT, RIGHT_TANGENT}; // things that can be hit

  int what; // what was hit

  int id; // id of hit thing

  static int name_only;

  // tangent vectors from corresponding vertex

  //

  point<float> left_tangent, right_tangent;

  float left_tangent_magnitude, right_tangent_magnitude;

  hit_t (multi_curve* c = 0, int cid = -1, int w = NONE, int i = -1, int no = 0);

  hit_t (const hit_t& h);

  void clear ();

  int operator()() const; // hit?

  int operator()(int) const; // hit curve item exists?

  int operator== (const hit_t& h) {return ((crv == h.crv) && (what == h.what) && (id == h.id));}

  int matched_id (const hit_t& h) {return ( (crv == h.crv) && (id == h.id) ); }

  void ensure_id ();

  hit_t& operator= (const hit_t& h);

  void copy (const hit_t& src);

  pinpoint<float>& get ();

};

template <typename T> T& operator<< (T& t, const hit_t& h) {

  if (hit_t::name_only)

    t << h.crv->name;

  else {

    static const std::string what [] = {"nothing ", "vertex ", "L-tangent ", "R-tangent "};

    static const char* of = " of ";

    t << what[h.what] << h.id << of << h.crv->name;

  }

  return t;

}

#endif