fn view(app: &App, model: &Model, frame: Frame) {
  let win = app.window_rect();
  app.set_loop_mode(LoopMode::NTimes {
    // two frames are necessary for capture_frame to work properly
    number_of_updates: 2,
  });

  // Prepare to draw.
  let draw = app.draw();

  // Clear the background to black.
  draw.background().color(BLACK);

  // not sure how to make this work the way I want it
  let mut oscillator_map: HashMap<String, Oscillator> = HashMap::new();
  oscillator_map.insert(String::from("sin"), osc_sin);
  oscillator_map.insert(String::from("cos"), osc_cos);
  oscillator_map.insert(String::from("half-sin"), osc_half_sin);
  oscillator_map.insert(String::from("collapse"), osc_collapse);

  let x_modulator = match oscillator_map.get(&model.x_oscillator) {
    Some(osc) => osc,
    None => {
      println!(
        "Oscillator value '{}' is invald. Valid options are:",
        &model.x_oscillator
      );
      oscillator_map.keys().for_each(|key| println!("{}", key));
      std::process::exit(0);
    }
  };
  let y_modulator = match oscillator_map.get(&model.y_oscillator) {
    Some(osc) => osc,
    None => {
      println!(
        "Oscillator value '{}' is invald. Valid options are:",
        &model.y_oscillator
      );
      oscillator_map.keys().for_each(|key| println!("{}", key));
      std::process::exit(0);
    }
  };

  let points = (0..=(model.line_length * 360 * model.resolution as i32)).map(|i| {
    let theta: f32 = deg_to_rad(i as f32) / model.resolution;
    let x = theta.cos() * model.radius * x_modulator(theta * model.x_mod_depth) + model.x_origin;
    let y = theta.sin() * model.radius * y_modulator(theta * model.y_mod_depth) + model.y_origin;
    let point = pt2(x, y);
    let hue = lerp(
      model.color_start,
      model.color_end,
      i as f32 / 360. / model.line_length as f32 / model.resolution,
    );
    let color = hsl(hue, 0.5, 0.5);
    (point, color)
  });

  if model.solid {
    // do not filter points that are offscreen because it can cause unexpected line artifacts
    draw
      .polyline()
      .start_cap_round()
      .weight(model.line_weight)
      .points_colored(points);
  } else {
    // filter points that are offscreen for quicker rendering
    points
      .filter(|(pt, _color)| {
        pt.x > win.x.start && pt.x < win.x.end && pt.y > win.y.start && pt.y < win.y.end
      })
      .for_each(|(pt, color)| {
        draw
          .ellipse()
          .x_y(pt.x, pt.y)
          .color(color)
          .radius(model.line_weight);
      })
  }

  // Write to the window frame.
  draw.to_frame(app, &frame).unwrap();

  let file_path = captured_frame_path(app, &frame);
  app.main_window().capture_frame_threaded(file_path);
}
// the only thing this should do is draw the model.grid (or maybe model.next)
the only thing this should do is draw the model.grid (or maybe model.next)
the only thing this should do is draw the model . grid ( or maybe model . next )
fn view(app: &App, model: &Model, frame: Frame) {
  let win = app.window_rect();
  app.set_loop_mode(LoopMode::NTimes {
    // two frames are necessary for capture_frame to work properly
    number_of_updates: 2,
  });
  // Prepare to draw.
  let draw = app.draw();
  // Clear the background to black.
  draw.background().color(BLACK);
  // not sure how to make this work the way I want it
  let mut oscillator_map: HashMap<String, Oscillator> = HashMap::new();
  oscillator_map.insert(String::from("sin"), osc_sin);
  oscillator_map.insert(String::from("cos"), osc_cos);
  oscillator_map.insert(String::from("half-sin"), osc_half_sin);
  oscillator_map.insert(String::from("collapse"), osc_collapse);
  let x_modulator = match oscillator_map.get(&model.x_oscillator) {
    Some(osc) => osc,
    None => {
      println!(
        "Oscillator value '{}' is invald. Valid options are:",
        &model.x_oscillator
      );
      oscillator_map.keys().for_each(|key| println!("{}", key));
      std::process::exit(0);
    }
  };
  let y_modulator = match oscillator_map.get(&model.y_oscillator) {
    Some(osc) => osc,
    None => {
      println!(
        "Oscillator value '{}' is invald. Valid options are:",
        &model.y_oscillator
      );
      oscillator_map.keys().for_each(|key| println!("{}", key));
      std::process::exit(0);
    }
  };
  let points = (0..=(model.line_length * 360 * model.resolution as i32)).map(|i| {
    let theta: f32 = deg_to_rad(i as f32) / model.resolution;
    let x = theta.cos() * model.radius * x_modulator(theta * model.x_mod_depth) + model.x_origin;
    let y = theta.sin() * model.radius * y_modulator(theta * model.y_mod_depth) + model.y_origin;
    let point = pt2(x, y);
    let hue = lerp(
      model.color_start,
      model.color_end,
      i as f32 / 360. / model.line_length as f32 / model.resolution,
    );
    let color = hsl(hue, 0.5, 0.5);
    (point, color)
  });
  if model.solid {
    // do not filter points that are offscreen because it can cause unexpected line artifacts
    draw
      .polyline()
      .start_cap_round()
      .weight(model.line_weight)
      .points_colored(points);
  } else {
    // filter points that are offscreen for quicker rendering
    points
      .filter(|(pt, _color)| {
        pt.x > win.x.start && pt.x < win.x.end && pt.y > win.y.start && pt.y < win.y.end
      })
      .for_each(|(pt, color)| {
        draw
          .ellipse()
          .x_y(pt.x, pt.y)
          .color(color)
          .radius(model.line_weight);
      })
  }
  // Write to the window frame.
  draw.to_frame(app, &frame).unwrap();
  let file_path = captured_frame_path(app, &frame);
  app.main_window().capture_frame_threaded(file_path);
}
fn view ( app : & App , model : & Model , frame : Frame ) { let win = app . window_rect ( ) ; app . set_loop_mode ( LoopMode :: NTimes { // two frames are necessary for capture_frame to work properly number_of_updates : 2 , } ) ; // Prepare to draw. let draw = app . draw ( ) ; // Clear the background to black. draw . background ( ) . color ( BLACK ) ; // not sure how to make this work the way I want it let mut oscillator_map : HashMap < String , Oscillator > = HashMap :: new ( ) ; oscillator_map . insert ( String :: from ( " " ) , osc_sin ) ; oscillator_map . insert ( String :: from ( " " ) , osc_cos ) ; oscillator_map . insert ( String :: from ( " " ) , osc_half_sin ) ; oscillator_map . insert ( String :: from ( " " ) , osc_collapse ) ; let x_modulator = match oscillator_map . get ( & model . x_oscillator ) { Some ( osc ) => osc , None => { println ! ( " " model x_oscillator ) ; oscillator_map . keys ( ) . for_each ( | key | println ! ( " " key ) ) ; std :: process :: exit ( 0 ) ; } } ; let y_modulator = match oscillator_map . get ( & model . y_oscillator ) { Some ( osc ) => osc , None => { println ! ( " " model y_oscillator ) ; oscillator_map . keys ( ) . for_each ( | key | println ! ( " " key ) ) ; std :: process :: exit ( 0 ) ; } } ; let points = ( 0 ..= ( model . line_length * 360 * model . resolution as i32 ) ) . map ( | i | { let theta : f32 = deg_to_rad ( i as f32 ) / model . resolution ; let x = theta . cos ( ) * model . radius * x_modulator ( theta * model . x_mod_depth ) + model . x_origin ; let y = theta . sin ( ) * model . radius * y_modulator ( theta * model . y_mod_depth ) + model . y_origin ; let point = pt2 ( x , y ) ; let hue = lerp ( model . color_start , model . color_end , i as f32 / 360. / model . line_length as f32 / model . resolution , ) ; let color = hsl ( hue , 0.5 , 0.5 ) ; ( point , color ) } ) ; if model . solid { // do not filter points that are offscreen because it can cause unexpected line artifacts draw . polyline ( ) . start_cap_round ( ) . weight ( model . line_weight ) . points_colored ( points ) ; } else { // filter points that are offscreen for quicker rendering points . filter ( | ( pt , _color ) | { pt . x > win . x . start && pt . x < win . x . end && pt . y > win . y . start && pt . y < win . y . end } ) . for_each ( | ( pt , color ) | { draw . ellipse ( ) . x_y ( pt . x , pt . y ) . color ( color ) . radius ( model . line_weight ) ; } ) } // Write to the window frame. draw . to_frame ( app , & frame ) . unwrap ( ) ; let file_path = captured_frame_path ( app , & frame ) ; app . main_window ( ) . capture_frame_threaded ( file_path ) ; }
the only thing this should do is draw the model.grid (or maybe model.next)
the only thing this should do is draw the model . grid ( or maybe model . next )
app
&App
model
&Model
frame
Frame