I have this code:
score = new Text(20, 50, font, "0123456789.()abcdefghijklmnopqrstuvwxyz", vbom);
score.setText("");
scene.attachChild(score);
I read in internet, that in beginning of using Text, need to list all chars which will be used.
In my Galaxy S2 (android 4.0.3) this code works properly it is nothing on the scene,
but in my wife's Galaxy S2 (android 2.3.3) the result on scene is like this:
0123456789.()nabcdefghijklmnopqrstuvwxyz
It is problem of android version? Or maybe I am doing something wrong?
EDIT:
one more clue, if I use score.setText("a"); instead of score.setText("");
than output is "a"
strange behaviour...
The Text class in AndEngine is picky. If you want to change the text after you create the object you have to specify the length of the string in the constructor (notice the .length()):
Text score = new Text(20, 50, font, "test", "test".length(), vbom);
If you use it like this:
Text score = new Text(20, 50, font, "test", vbom);
Then I think the text will not change, even after using setText("foo");
That's a typical problem. I had the same problem in my game. A would advice you just to hide the text(or detach it and attach it if required later).
To avoid delays in a game you should use
mFont.prepareLetters("0123456789".toCharArray());
It will allocate memory and load characters.
Related
I am using vuforia video playback demo with cloud recognition.
I have combined both projects and it is working properly. But currently video dimension is according to detected object. But i need fixed width and height when video plays.
Can anyone help me ?
Thanks in advance.
Well apparently Vuforia fixes the width and height at the start of the game no matter what the size of the object is. I could not find when exactly this operation is conducted but it is done at beginning of your game. When you change the size of the ImageTarget in runtime it is not fixed anymore. Add these lines to your OnTrackingFound function of DefaultTrackableEventHandler.cs
if (this.name == "WhateverTheNameOfYourRelatedImageTarget"&& !isScaled)
{
//Increase the size however you want i just added 1 to each dimension
this.transform.localScale += Vector3.one;
// make isScaled true not to scale every time it is found initially it shoud be false
isScaled = true;
}
Good luck!
What i usually do is , instead of Videoplayback , i play the video on canvas object and hook this object to Defaulttrackableeventhandler script. So when target is found, gameobject.setactive(true) and gameobject.setactive(false) when target is lost. By this method the size of the gameobject is fixed and it stays in a fixed location .
I just made an example you can get here (have to import it to any project and open the scene Assets/VideoExample/Examples). You can see there a bit clearer what the ScreenSpace - Overlay does ... it might be better to just switch to ScreenSpace - Camera in general
i have a problem with the WPF VisualBrush. Here you find two images from my application. The bigger on is a image which shows a control with text. The smaller one is a extract from the first on who i use a visual brush to make it. My problem is, that when the resolution of my Visual (the content for VisualBrush) would be smaller then the visual brush looks more blurred. I don't no why. I use the following code to declare the visual brush.
var blendBrush = new VisualBrush
{
Visual = Host.Viewer,
TileMode = TileMode.None,
AlignmentX = AlignmentX.Left,
AlignmentY = AlignmentY.Top,
Stretch = Stretch.None,
ViewboxUnits = BrushMappingMode.Absolute,
};
Host.Viewer is the control you see it on the big image. Everytime the control size is changed i update the ViewBox values with the following routine:
var viewBox = new System.Windows.Rect(topLeft, new Size(width, height));
visualBrush.Viewbox = viewBox;
topLeft is the start coordinates and the width and height values are the size of extract i needed.
I hope anyone can help how i can prevent that the control would be blurry!
Thanks
Daniel
Okay i found the problem. Host.Viewer contains in deeply part a canvas which contains a image object. Images could look blurry in .NET 4.0 and higher. The problem could resolve to set UseLayoutRounding = true; and BitmapScalingMode = BitmapScalingMode.NearestNeighbor; for the Canvas and the Rootparent-object.
I want to mask the moving objects from video.
I found that OpenCV has some built-in BackgroundSubtractors which could possibly saving my time a lot. However, according to the official reference, the function:
void BackgroundSubtractorMOG2::operator()(InputArray image, OutputArray fgmask, double learningRate=-1)
should output a mask, fgmask, but it doesn't. The fgmask variable will contain the "contour of the mask" instead after invoking above method. That's weird. All I want is a simple closed region filled with white color(for example) to represent the moving objects. How could I do that?
Any reply or recommendation would be very appreciate. Thanks a lot.
Here's my code:
int main(int argc, char *argv[])
{
cv::BackgroundSubtractorMOG2 bg = BackgroundSubtractorMOG2(30,16.0,false);
cv::VideoCapture cap(0);
cv::Mat frame, mask, _frame, _fmask;
cvNamedWindow("mask", CV_WINDOW_AUTOSIZE);
for(;;)
{
cap >> frame;
bg(frame,fmask,-1);
_frame = IplImage(frame);
_fmask = IplImage(fmask);
cvShowImage("mask", &_fmask);
if(cv::waitKey(30) >= 0) break;
}
return 0;
}
A snapshot of the output video is:
p.s. My working environment is OpenCV2.4.3 on OSX 10.8 and XCode 4.5.2 with apple LLVM compiler 4.1.
If you want to acquire the whole objects filled with white pixels in the foreground then I would ask you to tell me something about your experience.
My question is, for the code, you mentioned above, do you get more white pixels when you generate more motion in front of your camera?
If yes then there are two paramenters to learn about for your requirement.
First is the History parameter. which you have configured as 30 in the constructor BackgroundSubtractorMOG2(30,16.0,false);. You can test this param by incresing, say to 300. It will maintain the motion history of the object in the foreground. So if you have moved completely from your starting location within the 300 frames then you will get whole object covered with white pixels as you want. but it will be erased gradually. So it cannot give you the 100% solution.
The second parameter is called learning rate. In the code you mentioned bg(frame,fmask,-1); where -1 is your learning rate. you can set it to 0.0 to 1.0 and default is -1. When you set it 0, you will get what you want for the objects which are not part of the frame in the starting of the video. You can call this kind of object "foreign objects". You will get foreign object covered with white pixels.
Explore your testing from the information I have mentioned above and share your experience.
As the title says, the height of my tabs is not increasing as it should, my code looks like this:
JTabbedPane jtp = new JTabbedPane();
JLabel iconInTab = new JLabel(new ImageIcon("myImage.png"));
iconInTab.setPreferredSize(new Dimension(100,80)); // is the size of my Image, I've also try to do this using getSize
jtp.addTab(null,new JPanel());
jtp.setTabComponentAt(0,iconInTab);
I've also try this using html but it did not work either:
jtp.addTab("<html><p><p><p></html>",new ImageIcon("myImage.png"),new JPanel());
with the first code the problem is not the change of the size horizontally (the width change correctly), the problem is only on the height, with the second code, if I add multiple lines inside the html code, the text appear incomplete (just show the middle line) (also the width behaves as expected, the problem is the height). . .
why is this happening? or how could I get this done?
Note: S.O.: Mac OS X 10.8.1
Solved!!! The problem was that the default UI over MAC OS X (com.apple.laf.AquaTabbedPaneContrastUI), you only need to change it to the basicTabbedPaneUI (or the one of your preference), in my particular case I need to extend this class (it was a pain in the *, because what I wanted was really complex) to get the look & feel that I was expecting, if you have the same trouble just do this before adding your tabs:
myTabbedPane.setUI(new BasicTabbedPaneUI());
Note: Checking the default UI of your TabbedPane, may solve many different problems.
I am creating a WC_COMBOBOXEX on Windows Vista and adding strings to it, but they don't show up in the control. The same strings show up fine if I use the old WC_COMBOBOX with CB_ADDSTRING.
I am calling InitCommonControlsEx with ICC_USEREX_CLASSES and creating the comboboxex using CreateWindowEx with style WS_CHILD|WS_CLIPSIBLINGS|CBS_SIMPLE|CBS_SORT|CBS_HASSTRINGS (no extended styles). I am adding the strings using
COMBOBOXEXITEM cbem = {0};
cbem.mask = CBEIF_TEXT;
cbem.iItem = -1;
cbem.pszText = L"hello";
SendMessage(hWnd_, CBEM_INSERTITEM, 0, TOLPARAM(&cbem));
The combobox comes up empty but when I move the cursor up and down in the editcontrol/listbox, I see funny block characters sometimes.
Eventually, I want to add it as a CBS_DROPDOWNLIST to a rebar control but I read somewhere that comboboxex works a lot better in there than the old combobox.
Thanks.
From MSDN:
ComboBoxEx controls support only the following ComboBox styles:
CBS_SIMPLE
CBS_DROPDOWN
CBS_DROPDOWNLIST
WS_CHILD
So CBS_SORT and CBS_HASSTRINGS may be messing up the style bits.
Does it help if you send CBEM_SETUNICODEFORMAT?