Nullable height

Author: noximo

examples/realData.php

@@ -0,0 +1,24 @@
+<?php
+declare(strict_types = 1);
+
+use noximo\PHPColoredAsciiLinechart\Colorizers\AsciiColorizer;
+use noximo\PHPColoredAsciiLinechart\Linechart;
+use noximo\PHPColoredAsciiLinechart\Settings;
+
+require_once dirname(__DIR__) . DIRECTORY_SEPARATOR . 'vendor' . DIRECTORY_SEPARATOR . 'autoload.php';
+$settings = new Settings();
+$settings->setFPS(40);
+$settings->setHeight(null);
+$lineGraph = new Linechart();
+$lineGraph->setSettings($settings);
+
+try {
+    $line = [0.0208, 0.020858, 0.021, 0.021, 0.0211, 0.0211, 0.0211, 0.0211, 0.0211, 0.021056, 0.0211, 0.0211, 0.0211, 0.0211, 0.0211, 0.0211, 0.0211, 0.0211, 0.021124, 0.0214, 0.0215, 0.021436, 0.02149, 0.021488, 0.02149, 0.02145, 0.02145, 0.021406, 0.02145, 0.02145, 0.02145, 0.0214, 0.02145, 0.021487, 0.02149, 0.021482, 0.02148, 0.02148, 0.0215, 0.0215, 0.0215, 0.0215, 0.021499, 0.021473, 0.021454, 0.021497, 0.021489, 0.021454, 0.021705, 0.02151, 0.021513,];
+
+    $lineGraph->addMarkers($line, [AsciiColorizer::GREEN], [AsciiColorizer::RED]);
+
+    $lineGraph->chart()->clearScreen()->print()->wait();
+    $lineGraph->clearAllMarkers();
+} catch (Exception $e) {
+    echo $e->getMessage();
+}

examples/stretched.php

@@ -8,7 +8,7 @@
 require_once dirname(__DIR__) . DIRECTORY_SEPARATOR . 'vendor' . DIRECTORY_SEPARATOR . 'autoload.php';
 $settings = new Settings();
 $settings->setFPS(40);
-$settings->setHeight(9);
+$settings->setHeight(null);
 
 $lineGraph = new Linechart();
 $lineGraph->setSettings($settings);

src/Linechart.php

@@ -75,6 +75,10 @@ class Linechart
      * @var IColorizer
      */
     private $colorizer;
+    /**
+     * @var float|null
+     */
+    private $adjuster;
 
     /**
      * @param int $x alias x coordinate
@@ -181,6 +185,7 @@ public function chart(): Chart
         $this->prepareData();
 
         foreach ($this->allmarkers as $markersData) {
+            $markersData['markers'] = $this->adjustMarkerValues($markersData['markers']);
             $this->currentColors = $this->currentColors ?? $markersData['colors'];
             $result = $this->prepareResult();
 
@@ -236,9 +241,13 @@ private function prepareData(): void
         $this->colorizer = $this->getSettings()->getColorizer();
         [$min, $max, $width] = $this->findMinMax($this->allmarkers);
 
+        $this->adjuster = $this->findAdjuster($min, $max);
+        $max = $this->adjust($max);
+        $min = $this->adjust($min);
+
         $this->range = max(1, abs($max - $min));
 
-        $height = $this->getSettings()->getHeight() ?? $this->range;
+        $height = (int) ($this->getSettings()->getHeight() ?? $this->range);
         $this->ratio = $height / $this->range;
 
         $this->min2 = $min * $this->ratio;
@@ -277,6 +286,54 @@ private function findMinMax(array $allmarkers): array
         return [$min, $max, $width];
     }
 
+    /**
+     * @param float $min
+     * @param float $max
+     *
+     * @return float|null
+     */
+    private function findAdjuster(float $min, float $max): ?float
+    {
+        $adjuster = null;
+        $realMin = $max - $min;
+
+        if ($realMin < 1 && $realMin > 0) {
+            $adjuster = 1 / $realMin;
+        }
+
+        return $adjuster;
+    }
+
+    /**
+     * @param float $number
+     *
+     * @return float
+     */
+    private function adjust(float $number): float
+    {
+        if ($this->adjuster !== null) {
+            $number *= $this->adjuster;
+        }
+
+        return $number;
+    }
+
+    /**
+     * @param $markers
+     *
+     * @return array
+     */
+    private function adjustMarkerValues($markers): array
+    {
+        if ($this->adjuster === null) {
+            return $markers;
+        }
+
+        return array_map(function ($value) {
+            return $value * $this->adjuster;
+        }, $markers);
+    }
+
     /**
      * @return array
      */
@@ -307,6 +364,7 @@ private function processBorder(array $result, array $markersData): array
 
         for (; $y <= $yMax; ++$y) {
             $rawLabel = $this->max2 / $this->ratio - ($y - $this->min2) * $this->range / $this->rows;
+            $rawLabel = $this->deadjust($rawLabel);
             $label = $format($rawLabel, $this->getSettings());
 
             $border = '┤';
@@ -322,6 +380,20 @@ private function processBorder(array $result, array $markersData): array
         return $result;
     }
 
+    /**
+     * @param float $number
+     *
+     * @return float
+     */
+    private function deadjust(float $number): float
+    {
+        if ($this->adjuster !== null) {
+            $number /= $this->adjuster;
+        }
+
+        return $number;
+    }
+
     /**
      * @param array $markers
      * @param int $x

src/Settings.php

@@ -92,7 +92,7 @@ public function getHeight(): ?int
      *
      * @return Settings
      */
-    public function setHeight(int $height): Settings
+    public function setHeight(?int $height): Settings
     {
         $this->height = $height;