use Image::alpha with ImageMagick 7

Karry · May 30, 2022 · d2f002f · d2f002f
1 parent cb470eb
commit d2f002f
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/src/pipeline_frame_prepare.cpp b/src/pipeline_frame_prepare.cpp
@@ -80,9 +80,13 @@ namespace timelapse {
       if (f - f1 > 0) { // for 100 % transparency, we don't have to composite
         Magick::Image secondLayer = *img2;
         *verboseOutput << "Blend with next image with " << (opacity * 100) << " % transparency" << endl;
-        
-        //secondLayer.opacity(((double) QuantumRange) * opacity);
+
+#if MagickLibVersion < 0x700
         secondLayer.opacity(Magick::Color::scaleDoubleToQuantum(opacity));
+#else
+        secondLayer.alpha(Magick::Color::scaleDoubleToQuantum(opacity));
+#endif
+
         blended.composite(secondLayer, 0, 0, Magick::DissolveCompositeOp);
       }
       //writeFrame(f, blended);