Is there a way to hide map (make not visible) tiles in Google Maps v2?
I want have all other functions of Maps (markers, info window) but instead of map I want to have static background image. As turnaround I tried use tile overlay but it is loading multiple images, not one, and there still is loaded first original map tile.
Is there an option to do that with Google Maps v2?
I don't think you can set a static image (Tile overlay is for creating lots of tiles and you should do a lot of calculation to recreate the correct background you want) and ground overlay wants a position (you could think at creating one ground overlay at the center of the map visible and set height and width to be the visible area of the map (there should be a method on GoogleMap object to obtain visible area).
About disabling tiles, you can set
GoogleMap.setMapType(GoogleMap.MAP_TYPE_NONE);
https://developer.android.com/reference/com/google/android/gms/maps/GoogleMap.html#setMapType(int)
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I have to segment a few things in a dataset I have (.nrrd-file) by drawing a rectangle around the area of interest and saving the segments (also as .nrrd-files).
I tried everything in the Segmentation-Tool that comes with MITK but I cannot seem to find a way to draw rectangles. I also tried to do some key combos (like holding shift, ctrl or alt) while drawing but in vain.
I know I can use the Measurement-Tool to select rectangles and save them (as .pf-files), but using that I'd have to write a some code to convert those selected rectangles into rectangle segmentations later on.
Does anyone know whether there's a possibility (that I didnt find yet) to draw rectangles in the Segmentation tool, or some other way so there's no need to write a workaround?
You can use the Image Cropper plugin in MITK 2016.11 for rectangular image masking and cropping (scissors icon).
Open the plugin, select your image in the Data Manager and click on the New button in the plugin to create a bounding object. You can modify the rectangular bounding shape in the render windows by dragging its red handles. You can move the whole shape by hovering over the bounding shape (it will turn green), click, and than drag.
Click on the Mask button if you want to get an image with the same dimensions in which all pixels outside the bounding shape are set to a user defined value (see the Advanced settings in the plugin). Click on the Crop button otherwise.
Note that you can always press F1 in any active MITK plugin to open a help page with detailed instructions.
I am wondering how can I add a border & background to labels generated via CCLabelBMFont class in cocos2d.
I don't want to use sprites because my labels are generated on the fly and will keep changing and the size of labels are also different.
Also, I want user to touch and move these labels across the screen. When user picks a label it wiggles a bit like in free air. In that case, I wish to keep low complexity and preserve memory and cpu calculations.
Anyone knows best ways to achieve this?
IOS app LetterPress has similar effects.
Create your own class, that will incapsulate creation of complex node.
It will have several layers, for example, the first layer can be simple CCLayerColor of given rect with zOrder -2, the next layer will be your CCLabelBMFont with zOrder -1 and then you can overload draw method to draw border over your control. All that you draw in this method will be drawn with zOrder 0.
Then you can encapsulate any effects in this class. For example, you can rotate it a bit with method pick, etc. Whatever you want.
In cocos2d for iPhone, how can I turn a selected portion of the screen into a menu item with selector functionality?
Imagine a worldmap with curved borders between different regions. When the player touches one of these regions, there should be a selector / callback for it. Sort of like a standard menu, but without making a label or an image selectable. Instead, what I want is to be able to specify the clickable area manually.
How about making a CCLayer that will contain this custom region? CCLayer already implements the touch delegates, and you could easily start capturing the regions by setting self.isTouchEnabled to true.
Define the areas of your world map manually, ideally as rectangles for polygons you'll need to look up polygon intersection test. Then just use CGRectContainsPoint with all rectangles and the touch point. If the touch is inside a world area, run whatever code needs to run.
This is related to one of my other questions.
If I am tiling a large image by creating a separate QGraphicsItem (with the raster data as its pixmap), how do I keep track of the QGraphicsItem's position within the scene? Obviously for raster data, it is important to keep all the tiles "touching" to make a continuous image and they also have to be in the right place so the image doesnt look jumbled.
Does each tile have to have positioning methods that move it in relation to it's neighbors on the top/left/bottom/right? This seems kind of clunky. Is there a better way to make them all move together?
In other words, if I pan the scene with scroll bars, or pick up the image and drag/move it around in the scene, I want all the tiles to also move and stay in the right position relative to each other.
What is the best approach for controlling the layout, which tiles need to be rendered (i.e. only the visible ones), and populating the data only once it is needed? Also, once a tile has been rendered, is the data from it ever dropped, and repopulated from the image file, say if it stays out of view for a while, then comes back later if someone pans to that section?
There are (more than) 2 ways of doing this:
Use QGraphicsItemGroup which
handles grouping of your tile items
for you. It moves, selects, updates
it's group members as if they are
one. I've never used it but from the
doc, it seems to work with typical
applications.
Paint the tiles yourself in the
paint() of one custom item. This
gives you total control on how to
place and draw the tiles while the
item truly acts as one item since it
is, well, one item. This is what I
do.
In a MFC SDI application containing a single CView, I pass the output device context pDC->m_hDC to a mapping library to render the map within the CMyView::OnDraw() method.
I would like the rendered image to appear in the centre of the cview surrounded by a black background, i.e. the image size would be smaller than the CView client rect size. I have experimented with CDC::SetViewportOrg() and set the device size in the mapping library, however unfortunately the mapping library draws outside of the device size set.
What is the best way of limiting the image to the desired size? Should I be looking at clipping functions? Or do I have to manually draw over the undesired parts of the image.
Well you can do it 2 ways.
1) You could SetBoundsRect to the boundaries you want.
2) You could just bit blt the section of the image you want into the DC.
Method 2 would be my preferred method as there is no extra logic. It only ever even tries to draw the part you are blitting :)