- Removed possible black background from Tracker and Object Detector effects when using a child clip

- Small refactor to Tracker and Object Detector drawImage code when drawing a Child Clip ID
- Some light code clean-up

Author: jonoomph

src/Clip.cpp

@@ -253,19 +253,16 @@ void Clip::AttachToObject(std::string object_id)
 			SetAttachedClip(clipObject);
 		}
 	}
-	return;
 }
 
 // Set the pointer to the trackedObject this clip is attached to
 void Clip::SetAttachedObject(std::shared_ptr<openshot::TrackedObjectBase> trackedObject){
 	parentTrackedObject = trackedObject;
-	return;
 }
 
 // Set the pointer to the clip this clip is attached to
 void Clip::SetAttachedClip(Clip* clipObject){
 	parentClipObject = clipObject;
-	return;
 }
 
 /// Set the current reader
@@ -754,11 +751,8 @@ std::string Clip::PropertiesJSON(int64_t requested_frame) const {
 	root["display"] = add_property_json("Frame Number", display, "int", "", NULL, 0, 3, false, requested_frame);
 	root["mixing"] = add_property_json("Volume Mixing", mixing, "int", "", NULL, 0, 2, false, requested_frame);
 	root["waveform"] = add_property_json("Waveform", waveform, "int", "", NULL, 0, 1, false, requested_frame);
-	if (!parentObjectId.empty()) {
-		root["parentObjectId"] = add_property_json("Parent", 0.0, "string", parentObjectId, NULL, -1, -1, false, requested_frame);
-	} else {
-		root["parentObjectId"] = add_property_json("Parent", 0.0, "string", "", NULL, -1, -1, false, requested_frame);
-	}
+	root["parentObjectId"] = add_property_json("Parent", 0.0, "string", parentObjectId, NULL, -1, -1, false, requested_frame);
+
 	// Add gravity choices (dropdown style)
 	root["gravity"]["choices"].append(add_property_choice_json("Top Left", GRAVITY_TOP_LEFT, gravity));
 	root["gravity"]["choices"].append(add_property_choice_json("Top Center", GRAVITY_TOP, gravity));
@@ -1438,17 +1432,14 @@ QTransform Clip::get_transform(std::shared_ptr<Frame> frame, int width, int heig
 
 	// Get the parentTrackedObject properties
 	if (parentTrackedObject){
-
 		// Convert Clip's frame position to Timeline's frame position
 		long clip_start_position = round(Position() * info.fps.ToDouble()) + 1;
 		long clip_start_frame = (Start() * info.fps.ToDouble()) + 1;
 		double timeline_frame_number = frame->number + clip_start_position - clip_start_frame;
 
 		// Get parentTrackedObject's parent clip's properties
-		std::map<std::string, float> trackedObjectParentClipProperties;
-		if (parentClipObject) {
-            parentTrackedObject->GetParentClipProperties(timeline_frame_number);
-        }
+		std::map<std::string, float> trackedObjectParentClipProperties =
+		        parentTrackedObject->GetParentClipProperties(timeline_frame_number);
 
 		// Get the attached object's parent clip's properties
 		if (!trackedObjectParentClipProperties.empty())

src/TrackedObjectBBox.cpp

@@ -382,12 +382,7 @@ void TrackedObjectBBox::SetJsonValue(const Json::Value root)
 
 	// Set the id of the child clip
 	if (!root["child_clip_id"].isNull() && root["child_clip_id"].asString() != Id()){
-		Clip* parentClip = (Clip *) ParentClip();
-		if (parentClip && root["child_clip_id"].asString() != parentClip->Id()) {
-            ChildClipId(root["child_clip_id"].asString());
-		} else if (parentClip == NULL) {
-            ChildClipId(root["child_clip_id"].asString());
-		}
+        ChildClipId(root["child_clip_id"].asString());
 	}
 
 	// Set the Keyframes by the given JSON object

src/effects/ObjectDetection.cpp

@@ -122,15 +122,6 @@ std::shared_ptr<Frame> ObjectDetection::GetFrame(std::shared_ptr<Frame> frame, i
                 std::vector<int> bg_rgba = trackedObject->background.GetColorRGBA(frame_number);
                 float bg_alpha = trackedObject->background_alpha.GetValue(frame_number);
 
-                // Create a rotated rectangle object that holds the bounding box
-                // cv::RotatedRect box ( cv::Point2f( (int)(trackedBox.cx*fw), (int)(trackedBox.cy*fh) ),
-                //					 cv::Size2f( (int)(trackedBox.width*fw), (int)(trackedBox.height*fh) ),
-                //					 (int) (trackedBox.angle) );
-
-                // DrawRectangleRGBA(cv_image, box, bg_rgba, bg_alpha, 1, true);
-                // DrawRectangleRGBA(cv_image, box, stroke_rgba, stroke_alpha, stroke_width, false);
-
-
                 cv::Rect2d box(
                     (int)( (trackedBox.cx-trackedBox.width/2)*fw),
                     (int)( (trackedBox.cy-trackedBox.height/2)*fh),
@@ -160,9 +151,8 @@ std::shared_ptr<Frame> ObjectDetection::GetFrame(std::shared_ptr<Frame> frame, i
                         Clip* childClip = parentTimeline->GetClip(trackedObject->ChildClipId());
 
                         if (childClip){
-                            std::shared_ptr<Frame> f(new Frame(1, frame->GetWidth(), frame->GetHeight(), "#00000000"));
                             // Get the image of the child clip for this frame
-					        std::shared_ptr<Frame> childClipFrame = childClip->GetFrame(f, frame_number);
+					        std::shared_ptr<Frame> childClipFrame = childClip->GetFrame(frame_number);
                             childClipImages.push_back(childClipFrame->GetImage());
 
                             // Set the Qt rectangle with the bounding-box properties
@@ -190,7 +180,7 @@ std::shared_ptr<Frame> ObjectDetection::GetFrame(std::shared_ptr<Frame> frame, i
             // Set a Qt painter to the frame image
             QPainter painter(&frameImage);
             // Draw the child clip image inside the bounding-box
-            painter.drawImage(boxRects[i], *childClipImages[i], QRectF(0, 0, frameImage.size().width(),  frameImage.size().height()));
+            painter.drawImage(boxRects[i], *childClipImages[i]);
         }
         // Set the frame image as the composed image
         frame->AddImage(std::make_shared<QImage>(frameImage));

src/effects/Tracker.cpp

@@ -132,8 +132,7 @@ std::shared_ptr<Frame> Tracker::GetFrame(std::shared_ptr<Frame> frame, int64_t f
 				Clip* childClip = parentTimeline->GetClip(trackedData->ChildClipId());
 				if (childClip){
 					// Get the image of the child clip for this frame
-					std::shared_ptr<Frame> f(new Frame(1, frame->GetWidth(), frame->GetHeight(), "#00000000"));
-					std::shared_ptr<Frame> childClipFrame = childClip->GetFrame(f, frame_number);
+					std::shared_ptr<Frame> childClipFrame = childClip->GetFrame(frame_number);
 					childClipImage = childClipFrame->GetImage();
 
 					// Set the Qt rectangle with the bounding-box properties
@@ -160,7 +159,7 @@ std::shared_ptr<Frame> Tracker::GetFrame(std::shared_ptr<Frame> frame, int64_t f
 		QPainter painter(&frameImage);
 
 		// Draw the child clip image inside the bounding-box
-		painter.drawImage(boxRect, *childClipImage, QRectF(0, 0, frameImage.size().width(),  frameImage.size().height()));
+		painter.drawImage(boxRect, *childClipImage);
 
 		// Set the frame image as the composed image
 		frame->AddImage(std::make_shared<QImage>(frameImage));