I've never run into this problem in the past, but when I use a png as my default cursor in an application i'm developing, it stops working with the startDrag and stopDrag.
When before I import the png of the simple vector graphic (a scribble) it works fine.
Do the alpha channels throw the code out?
If so, is there a work around that still allow me to use the png in this way?
It's a png of some tweezers with dropshadow.
// ------------------------ tweeze tool
Mouse.hide();
stage.addEventListener(MouseEvent.MOUSE_MOVE,follow);
function follow(evt:MouseEvent){
tweezed_one.x = mouseX;
tweezed_one.y = mouseY;
}
Your question is not so clear.
But what I understood is that you are not aware of mouseChildren while using custom cursor.
Add this line where you created it,
tweezed_one.mouseChildren = false;
Now you will be able to drag and drop.
For more info see mouseChildren
Related
I've been trying for two days to find an alternative to loading an image into my current project. I am using Adobe Flash Professional CS6 as my IDE and Animation program. I would like to be able to display an image in my application. What I am trying to do is have the image display onto the screen, the user enters the PLU associated with the image, and if the PLU is right then they receive a point. I have everything else already to go, but I just can't find an efficient way to deal with loading the image.
Right now I'm using this to accomplish getting my image on the display:
var myDisp:Layer0 = new Layer0();
var bmp:Bitmap = new Bitmap(myDisp);
spDispBox.addChild(bmp);
The above code works just find, but the limitation I can't get around is that I'm going to have to import each image into the library and then consecutively code each part in. I wanted to stick to OOP and streamline this process, I just don't know where I should turn to in order to accomplish my project goal. I'm more than happy to give more information. Thanks in advance, everyone.
July, 26, 2014 - Update: I agree, now, that XML is the way to go. I'm just having a hard time getting the grasp of loading an external XML file. I'm following along, but still not quite getting the idea. I understand about creating a new XML data object, Loader, and URLRequest. It's just loading the picture. I've been able to get output by using trace in the function to see that the XML is loaded, but when I go to add the XML data object to the stage I'm getting a null object reference.
I'm going to try a few more things, I just wanted to update the situation. Thanks again everyone.
it seems like these images are in your FLA library. To simplify your code you can make a singleton class which you can name ImageFactory (factory design pattern) and call that when needing an image which will return a Sprite (lighter than a MovieClip)
spDispBox.addChild( ImageFactory.getImageA() ); // returns a Sprite with your image
and in your ImageFactory
public function getImageA():DisplayObject {
var image:Layer0 = new Layer0(); // image from the FLA library
var holder:Sprite = new Sprite();
holder.addChild( new Bitmap( image ) );
return holder;
}
also recommend using a more descriptive name than Layer0
Is it possible to have enaml as target for OpenCV?
I'm thinking how to setup GUI and what to use.
Nothing too complicated, I need to be able to set some bitmap background, draw rectangles and circles over it, but also have the possibility to select/move these graphics objects.
Also, I would like that I do not have to take care of all these elements when I stretch the window, etc. they should do this automatically since they would be defined in some "absolute" space. I think I could easily make it work for the bitmaps (even from memory), by overriding request_image in ImageProvider object (even though I see some strange cache happening in provider/enaml view).
Problem that I'm having now with OpenCV (OSX 64) is that even when I get resize to work with qt backend and CV_WINDOW_NORMAL, the content does not stretch.
I like OpenCV, because easily I get basic UI functions.
On the other hand I started to like enaml so I'm thinking did anyone manage to get these to to work together.
I'm thinking if link with MPL works, it's possible that coupling with OpenCV should be possible :)
Thanks!
If you can get your image into argb32 or png format, you can use an Enaml ImageView to display it.
Take a look at the ImageView example:
https://github.com/nucleic/enaml/blob/master/examples/widgets/image_view.enaml
This should do it:
from enaml.image import Image
from cv2 import imread, imencode
open_cv_image = imread('./cat.png')
png_image = imencode('.png', open_cv_image)[1].tostring()
enaml_image = Image(data=png_image)
I do not understand why OpenCV doesn't work when we do not need to create OpenCV window using cvNamedWindow.
Actually, I do not want to use OpenCV GUI window, I want to use third party GUI in order to display grabbed frame, So for this, i do not need to create OpenCV window. But When I do not create OpenCV window, my application gets stuck, nothing works, and when I do create OpenCV window using cvNamedWindow, everything works fine.
Any suggestion, whats the reason? how can I grab OpenCV frame without creating its GUI window?
I am using OpenCV 2.4.3 (cvQueryFrame), VS2010 c++, WindowsXP
Thanks.
you probably need to skip the waitKey() call, too ;)
(also, do yourself a favour, and skip the c-api. it's a real PITA and will go away soon)
That's because you are grabbing images at a faster rate than what the camera can ouput. You need to add a little delay to your while cycle. If your camera does 25FPS, you should add ~1/25 of a second or so.
Solved: The problem was this, actually, I was creating a third party GUI window inside of the pthread which was causing its infinite updating. When I created window outside of the pthread, it works fine.
procedure is this:
void Init()
{
createGUIwin(w, h);
init_pthread();
}
void init_pthread(void*)
{
//createGUIwin(w, h); // before I was creating GUIwin here
while(ON)
{
frame = getOCVframe();
UpdateGUIwin(frame);
key = cvWaitKey(10);
}
}
Thanks everyone. I appreciate your answers.
I'm trying to load an SWF into another in AS3/Haxe. The loaded SWF contains some images - but only on some Shape.graphics elements. (Like graphics.beginBitmapFill(); ...)
This images are not smoothed, and jaggy.
Can this images be smoothed anyhow during runtime?
Any hack interested! :)
Thanks in advance!
Tom
Update: Sorry, but I forget to mention, that I'm loading more AS2-SWFs (AVM1) into one AS3-SWF (AVM2) with AVM2Loader, which hack the loaded bytes, and convert the AVM1 SWFs into AVM2 - it works very well. :)
So, in these SWFs I need to find the images/bitmaps, but only found the Shapes, which graphics elements has the 'images'. If I clear this graphics, then all images are gone, so I think, the images are in some graphics.beginBitmapFill(...);, without smoothing. I want to reach them, and switch smoothing on at runtime, if possible.
(Sorry, if the first time I was not enough clear.)
Edit (Jan 23 '14): I found solution for it. It is not fast, and required Flash Player 11.6. Every MovieClip graphics properties has a new readGraphicsData function, which give all the graphics commands (Vector IGraphicsData) to draw the whole MC. And iterate in these commands, if I change every bitmapFill command smooth parameter to true, and redraw the MC, it will be smoothed, and nice.
That's it. Not fast, but working.
I found solution for it. It is not fast, and required Flash Player 11.6. Every MovieClip graphics properties has a new readGraphicsData function, which give all the graphics commands (Vector IGraphicsData) to draw the whole MC. And iterate in these commands, if I change every bitmapFill command smooth parameter to true, and redraw the MC, it will be smoothed, and nice.
That's it. Not fast, but working.
function onLoad(event):Void
{
pic.forceSmoothing = true;
}
Smoothing is a property of bitmaps that's off by default.
var image = new Bitmap(bitmapData);
image.smoothing = true;
Typically, your bitmapData will be in the loader.content.bitmapData when loading externally, but it's up to you were you've stored it.
Update:
If you want to smooth all images in a loaded SWF without any knowledge of the structure of the SWF, then you'll have to recursively dig through the hiarchy of that SWF, and depending on whether or not the object is a Bitmap, turn on smoothing.
function recursivelySmooth(obj):void {
for (var i:int = 0; obj.getChildAt(i); i++) {
var item:* = obj.getChildAt(i);
if (item is Bitmap) {
item.smoothing = true;
} else if (item.hasOwnProperty("numChildren") == true) {
recursivelySmooth(item);
}
}
}
This was written freehand, so you may have to doublecheck everything is correct, but that's the basic idea. Just call recursivelySmooth() on your swf, and it'll dig through all objects that can have child elements and smooth them.
I wrote an OPENCV project in VS2010 and the results were not the ones as I expected so I ran the debugger to see where is the problem. When I wanted to see the data inside the image loaded I didn't know how to do it so if I want to see the data inside my images what should I do?
It is pretty simple in matlab for seeing different channel of an image i.e.
a=imread('test.jpg');
p1 = a(:,:,1)
p2 = b(:,:,2)
.
.
In opencv I wrote the same thing but I don't know how to see all the element at once just like Matlab.
a= imread("test.jpg")
split(a,planes);
vector<Mat> T1;
T1 = planes[0];
// How can I see the data inside T1 when debugging the code ?
I think this is what you are looking for - it's a great Visual Studio add-on
https://bitbucket.org/sergiu/opencv-visualizers
Just download the installer, make sure VS is closed, run it, re-open VS and voila! Now, when you point to an OpenCV data structure, all kinds of nice info is showed.
Limitations: I saw some problems with multichannel images (it only shows the first channel) and it also has trouble displaying large matrices. If you want to see raw data in a big matrix, you can use the old good VS trick with debug variables: Stop at a breakpoint, go to Watch tab, and write there
((float*)myMat.data) ,10
Where float is the matrix type, myMat is your matrix, and 10 is the number of values you want to print. It will display the first 10 values at the memory location of myMat.data. If you do not correctly choose the data type, you'll see garbage. In my example, myMat is of type cv::Mat.
And never forget the power of visualizers:
imshow("Image", myMat);
If your data fits into an image. You can use the contrib module's colormap to enhance your visualizers.
I can't actually believe that nobody suggested Image Watch yet. It's the most amazing add-in ever. It shows you a view with all your Mat variables (images (gray and color), matrices) while debugging, there's useful stuff like zooming or contrast-stretching and you can even apply more complex functions directly in the plugin in real-time. It makes debugging of any kind of image operations a breeze and it's immensely helpful if you do calculations and linear algebra stuff with your cv::Mat matrices.
I recommend to use a NativeViewer extension. It actually displays the content of an image in a preview window, not only the properly formatted info.
If you don't want to use a plug-in or extension to Visual Studio, you can access the elements one by one in the debugging watch tab by typing this:
T1.data[T1.step.buf[0]*i + T1.step.buf[1]*j];
where i is the row you want to look at and j is the column.
after downloading imagewatch use the command in watch window
(imagesLoc._Myfirst)[0]
index of image in the vector
You can use the immediate window and the extenshion method like this one
/// <summary>
/// Displays image
/// </summary>
public static void Display (this Mat m, Rect rect = default, string windowName = "")
{
if (string.IsNullOrEmpty(windowName))
{
windowName = m.ToString();
}
var img = rect == default ? m : m.Crop(rect);
double coef = Math.Min(1600d / img.Width, 800d / img.Height);
Cv2.ImShow(windowName, img.Resize(new Size(coef * img.Width, (coef * img.Height) > 1 ? coef * img.Height : 1)));
Cv2.WaitKey();
}
Then you stop at a breakpoint and call yourImage.Display() in the immediate window.
If you can use CLion you can utilize the OpenCV Image Viewer plugin, which displays matrices while debugging just on click.
https://plugins.jetbrains.com/plugin/14371-opencv-image-viewer
Disclaimer: I'm an author of this plugin