minor fixes wrt antialiasing

Releases v0.1.1

Author: laufhannes

composer.json

@@ -1,7 +1,7 @@
 {
   "name": "runalyze/static-maps",
   "description": "Library to create static images from various map tile providers.",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "license": "MIT",
   "require": {
     "php": ">=7.0",

src/Drawer/AntialiasDrawer.php

@@ -18,6 +18,9 @@ class AntialiasDrawer
     /** @var bool */
     protected $IsNativeFunctionAvailable;
 
+    /** @var bool */
+    protected $UseNativeFunctionIfAvailable = false;
+
     /** @var float */
     protected $AntialiasThreshold;
 
@@ -27,9 +30,14 @@ public function __construct(float $antialiasThreshold = 0.0)
         $this->AntialiasThreshold = $antialiasThreshold;
     }
 
+    public function enableNativeAntialiasingIfAvailable(bool $flag)
+    {
+        $this->UseNativeFunctionIfAvailable = $flag;
+    }
+
     public function drawLine($resource, $x1, $y1, $x2, $y2, int $r, int $g, int $b, float $alpha = 100.0, int $lineWidth = 1)
     {
-        if ($this->IsNativeFunctionAvailable) {
+        if ($this->IsNativeFunctionAvailable && $this->UseNativeFunctionIfAvailable) {
             $this->drawNativeLine($resource, $x1, $y1, $x2, $y2, $r, $g, $b, $alpha, $lineWidth);
         } else {
             $this->drawAntialiasLine($resource, $x1, $y1, $x2, $y2, $r, $g, $b, $alpha, $lineWidth);
@@ -38,6 +46,11 @@ public function drawLine($resource, $x1, $y1, $x2, $y2, int $r, int $g, int $b,
 
     protected function drawNativeLine($resource, $x1, $y1, $x2, $y2, int $r, int $g, int $b, float $alpha = 100.0, int $lineWidth = 1)
     {
+        $x1 = (int)round($x1);
+        $x2 = (int)round($x2);
+        $y1 = (int)round($y1);
+        $y2 = (int)round($y2);
+
         imagesetthickness($resource, $lineWidth);
         imagealphablending($resource, true);
         imageantialias($resource, true);

src/Feature/Route.php

@@ -39,6 +39,9 @@ class Route implements FeatureInterface
     /** @var bool */
     protected $Antialiasing;
 
+    /** @var bool */
+    protected $AntialiasingNative = false;
+
     /** @var float [px] */
     protected $LineSimplificationTolerance = 0.0;
 
@@ -59,9 +62,10 @@ public function __construct(array $coordinates, $lineColor = '#000', int $lineWi
         $this->AntialiasDrawer = new AntialiasDrawer();
     }
 
-    public function enableAntialiasing(bool $flag)
+    public function enableAntialiasing(bool $flag = true, bool $nativeFlag = false)
     {
         $this->Antialiasing = $antialiasing;
+        $this->AntialiasingNative = $nativeFlag;
     }
 
     public function enableLineSimplification(float $pixelTolerance = 10)
@@ -83,6 +87,8 @@ protected function getLineColorArray($lineColor): array
 
     public function render(ImageManager $imageManager, Image $image, ViewportInterface $viewport)
     {
+        $this->AntialiasDrawer->enableNativeAntialiasingIfAvailable($this->AntialiasingNative);
+
         foreach ($this->LineSegments as $segment) {
             $numPoints = count($segment);
             $lastPoint = 0;
@@ -106,7 +112,7 @@ public function render(ImageManager $imageManager, Image $image, ViewportInterfa
 
                 $this->truncateStartAndEndPointsBy(0.2, $x1, $y1, $x2, $y2);
 
-                if ($this->Antialiasing && !function_exists('imageantialias')) {
+                if ($this->Antialiasing) {
                     $this->AntialiasDrawer->drawLine(
                         $image->getCore(),
                         $x1,
@@ -120,6 +126,7 @@ public function render(ImageManager $imageManager, Image $image, ViewportInterfa
                         $this->LineWidth
                     );
                 } else {
+                    imagesetthickness($image->getCore(), $this->LineWidth);
                     $image->line($x1, $y1, $x2, $y2, $this->LineCallback);
                 }