Subversion Repositories DIN Is Noise

/*

* lissajous.cc

* DIN Is Noise is copyright (c) 2006-2025 Jagannathan Sampath

* DIN Is Noise is released under GNU Public License 2.0

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

*/

#include "lissajous.h"

#include "vector2d.h"

#include "ui_list.h"

#include "mouse_slider.h"

#include <vector>

using namespace std;

extern ui_list uis;

extern const float PI_BY_180;

lissajous::lissajous () : center (0.5f, 0.0f) {

  name = "Lissajous";

  load_params ();

}

lissajous::~lissajous () {

  widget_save ("d_lissajous", ctrls);

  save_params ();

}

void lissajous::load_params () {

  ifstream f (make_fname().c_str(), ios::in);

  string ignore;

  f >> ignore >> speed.x >> ignore >> speed.y >> ignore >> angle.start >> ignore >> angle.end >> ignore >> num_points;

}

void lissajous::save_params () {

  ofstream f (make_fname().c_str(), ios::out);

  string ignore;

  f << "speed.x " << speed.x << endl << "speed.y " << speed.y << endl << "angle.start " << angle.start << endl << "angle.end " << angle.end << endl << "num_points " << num_points << endl;

}

void lissajous::setup () {

  plugin::setup ();

  widget* _ctrls [] = {&sp.speed.x, &sp.speed.y, &sp.angle.start, &sp.angle.end, &sp.num_points};

  for (int i = 0; i < 5; ++i) {

    ctrls.push_back (_ctrls[i]);

  }

  num_ctrls = ctrls.size ();

  /*for (int i = 0; i < num_ctrls; ++i) {

    ctrls[i]->set_moveable(1);

  }*/

  spinner<float>* spn [] = {&sp.speed.x, &sp.speed.y, &sp.angle.start, &sp.angle.end};

  const char* lbl [] = {"X Speed", "Y Speed", "Start angle", "End angle"};

  int ori [] = {mouse_slider_listener::X, mouse_slider_listener::Y, mouse_slider_listener::Y, mouse_slider_listener::Y};

  float val [] = {speed.x, speed.y, angle.start, angle.end};

  float dta [] = {0.01f, 0.01f, 1.0f, 1.0f};

  for (int i = 0; i < 4; ++i) {

    spinner<float>* spi = spn[i];

    spi->set (lbl[i], dta[i], -MILLION, MILLION, this, 0);

    spi->set_value (val[i]);

    spi->orient = ori[i];

  }

  sp.num_points.set ("Points", 1, 0, MILLION, this, 0);

  sp.num_points.set_value (num_points);

  widget_load ("d_lissajous", ctrls);

  render ();

}

void lissajous::render () {

  num_points = sp.num_points.value;

  if (num_points == 0) return;

  speed.x = sp.speed.x.value;

  speed.y = sp.speed.y.value;

  angle.start = sp.angle.start.value;

  angle.end = sp.angle.end.value;

  theta = angle.start * PI_BY_180;

  dtheta = (angle.end - angle.start) / num_points * PI_BY_180;

  int j = num_points + 1;

  points.resize (j);

  for (int i = 0; i < j; ++i) {

    float rtheta = theta;

    float rtheta1 = speed.x * rtheta;

    float rtheta2 = speed.y * rtheta;

    point<float>& pi = points[i];

    pi.x = center.x + sin (rtheta1);

    pi.y = center.y + sin (rtheta2);

    theta += dtheta;

  }

  ss.str("");

  ss << "lissajous_" << speed.x << '_' << speed.y;

  gen_pts ();

}