public function Logistic::postBuild in Openlayers 7.3

Invoked after an objects render array is built.

Mostly invoked by the map object.

Parameters

array $build: The array with the build information.

\Drupal\openlayers\Types\ObjectInterface $context: The context of the build. Mostly the map object.

Overrides Base::postBuild

File

modules/openlayers_library/src/Plugin/Component/Logistic/Logistic.php, line 24

Component: Logistic.

Class

Logistic

Class Logistic.

Namespace

Drupal\openlayers_library\Plugin\Component\Logistic

Code

public function postBuild(array &$build, ObjectInterface $context = NULL) {
  $build['parameters'][$this
    ->getPluginId()] = array(
    '#type' => 'fieldset',
    '#title' => 'Logistic map parameters',
    'intro' => array(
      '#type' => 'fieldset',
      '#collapsible' => TRUE,
      '#title' => 'About',
      'info' => array(
        '#markup' => '<p>Bifurcation diagram of the logistic map. The attractor for any value of the parameter <em>r</em> is shown on the vertical line at that <em>r</em>.</p><p>The bifurcation parameter <em>r</em> is shown on the horizontal axis of the plot and the vertical axis shows the possible long-term population values of the logistic function. More info on <a href="https://en.wikipedia.org/wiki/Bifurcation_diagram">Wikipedia</a>.</p><p>Formula: <em>x<sub>n+1</sub> = rx<sub>n</sub>(1-x<sub>n</sub>)</em></p><p>In this plot, <em>r</em> values are on X-axis, <em>Lim<sub>1 &#8594; n</sub>(x<sub>n+1</sub> = rx<sub>n</sub>(1-x<sub>n</sub>))</em> are on Y-axis.</p>',
      ),
    ),
    'start' => array(
      '#type' => 'rangefield',
      '#title' => 'Start (Lowest value of <em>r</em>)',
      '#description' => t('From -2 to 4. Default is 2.'),
      '#min' => -2,
      '#max' => 4,
      '#step' => 0.1,
      '#value' => 2,
      '#attributes' => array(
        'id' => 'start',
        'style' => 'width: 100%;',
      ),
    ),
    'end' => array(
      '#type' => 'rangefield',
      '#title' => 'End (Highest value of <em>r</em>)',
      '#description' => t('From -2 to 4. Default is 4.'),
      '#min' => -2,
      '#max' => 4,
      '#step' => 0.1,
      '#value' => 4,
      '#attributes' => array(
        'id' => 'end',
        'style' => 'width: 100%;',
      ),
    ),
    'initial' => array(
      '#type' => 'rangefield',
      '#title' => t('Initial value of <em>x</em>'),
      '#description' => t('From 0 to 1. Default is 0.5.'),
      '#min' => 0,
      '#max' => 1,
      '#step' => 0.01,
      '#value' => 0.5,
      '#attributes' => array(
        'id' => 'initial',
        'style' => 'width: 100%;',
      ),
    ),
    'iterations' => array(
      '#type' => 'rangefield',
      '#title' => 'Iterations',
      '#description' => 'Value of <em>n</em>. Default is 200.',
      '#min' => 10,
      '#max' => 1000,
      '#step' => 10,
      '#value' => 200,
      '#attributes' => array(
        'id' => 'iterations',
        'style' => 'width: 100%;',
      ),
    ),
    'density' => array(
      '#type' => 'rangefield',
      '#title' => 'Step',
      '#description' => 'On each loop, <em>r</em> increase by this <em>value<sup>-1</sup></em>. Default is 500.',
      '#min' => 10,
      '#max' => 1000,
      '#step' => 10,
      '#value' => 500,
      '#attributes' => array(
        'id' => 'density',
        'style' => 'width: 100%;',
      ),
    ),
  );
}