Android :: How To Draw A Different Lines In OpenGL ES
Apr 28, 2010How to draw different types of lines like thick line, dashed line etc using opengl android?
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Android :: Draw Multiple Lines In Edittext?
May 7, 2010i have a customized LinkedEditText extends from EditText, and override the onDraw method as below:...........................
View 9 Replies View RelatedAndroid : Create App To Draw Simple Lines Through OnTouchEvent?
Dec 29, 2009what is best way to create app in which I only need to draw simple lines through onTouchEvent? When i use invalidate everytime i draw any line, that erase lines i draw before. But if I use some List structure to store drawed lines it lose performance. Is there any simple way to do it?
View 6 Replies View RelatedAndroid :: Draw Transparent Lines On Bitmap Via Touch Input
Jul 23, 2010I am working on a paint application for Android. Now I want to implement an eraser to allow erasing parts of a loaded bitmap by using touch input and making the bitmap transparent along the finger's path.
A very good example of what I try to achieve is shown in the application Steamy Window for Android. Steamy Window simulates a fogged window, where a user can wipe parts of the fog via touch input.
UPDATE: I have posted the most important sections of my current code below. I am not really happy with it for the following reasons:
Drawing is quite sluggish. What can I improve here?
I am looking for a way to use an alpha mask in order to set the pixel transparency/alpha of the pixels as I want to simulate a paint brush. Any suggestions how this could be achieved?
CODE:...................
Android :: Simplest Way To Draw Pixels Lines / Circles On A View?
Aug 14, 2010What is the simplest way to draw pixels, lines and circles on a View?I want to move a cross cursor around, so nothing particularly intensive.I thought I could extend SurfaceView and add it to an XML and it would just work, but it just appears black, however, when I look at the layout view of localmap.xml in eclipse, the graphics appear as expected. Any ideas? My onDraw is never called on the emulator, and even calling invalidate on the class makes no difference. I shall keep trying but can anyone see anything I've missed? or is there a better way entirely? Code...
View 1 Replies View RelatedAndroid :: Lines And Drawables Draw Order In Google Maps
Nov 11, 2010I'm writing an app that shows in google maps pipes and valves(lines and points). For that i've two classes.
One extends from ItemizedOverlay, and i add to map overlay one for each category of valve, and each one can have more than one item.
The second extends from Overlay, and in the draw method y draw the line with the method drawline of the canvas.
The problem i've is that the lines are drawn over the ItemizedOverlay items, no matter the order i add them to the mapView.getOverlays().
I want the lines on the bottom of all overlays. is there a way to do that.
Android :: Draw 9 Patch Tool - What Is Meaning Of Black Lines Outside Figure
Nov 20, 2010I tried enough to find in google & android this question. Also did several trials & errors, but couldn't get this question. was learning Android's "Draw Nine Patch" images. One basic I know is that, whatever image you process must be in .png format (if it's already in .9.png then it will be ignored by tool). However, couldn't understand what it literally means by "stretchable patches" ? what exactly happens when you draw black dots outside the .png image ? (preview pane shows changes happening, but I am unclear on how it makes those)When I draw black dots in left/top sides of image it shows some changes in preview; but why isn't there any effect when you do the same on right/bottom side of the image ? why this tool is used primarily for background, when we try to process on the image itself ?i am trying to modify a simple button.png (given in android sdk). Whenever I use this tool & draw black lines, it reduces the size of the image instead of 'stretching' it! Why ?What is the significance of options given below like, "show lock", "show content", "Patch scale" and so on ?I apologize for asking so many questions, but in Android online docs they haven't explained well for novice. If someone can answer these, it will become ready reference for all the begineers who search this forum.
View 2 Replies View RelatedHow To Draw Image Or Edit Simple Lines In Text Box
Jan 8, 2013I am wondering if there is a way to draw an image, or edit simple lines in a text box. The entire screen is a textView/ect and i would like to be able to write a sentence then draw an image and write again. By draw i think i would use the Canvas, so basically is there a way to include a canvas in a text view?
Evernote does do this, but to edit an image/draw you need to open another app "Skitch", my goal is to try and do this without any extra apps.
For example:
Hello
(canvas/editable graphical items)
World
Android :: Draw A Bitmap - Using OpenGL
Aug 30, 2010I have a byte array of RGB values, just like the contents(without header) of a *.bmp file. What I want to do is, draw the corresponding bitmap on Android, using OpenGL.
It seems that OpenGL ES doesn't have a single API that will do, it true?
If true, how can I do this?
Actually, I can draw it in JAVA code, but it's too slow and costs too much CPU time. So I want to try drawing it with OpenGL. Is there any other advises? Or maybe OpenGL can't be the right answer?
Android :: Draw Text In OpenGL ES
Aug 27, 2009I'm currently developing a small OpenGL game for the Android platform and I wonder if there's an easy way to render text on top of the rendered frame (like a HUD with the player´s score etc). The text would need to use a custom font also. I've seen an example using a View as an overlay, but I don't know if I want to do that since I might want to port the game to other platforms later.
View 4 Replies View RelatedAndroid :: Draw Png Image And Run Opengl
Mar 14, 2009Is it possible to draw a png image and then to run opengl operations on it with android? Is this the right forum to ask this? where can i get more information on doing such stuff?
View 2 Replies View RelatedHow To Draw Sphere With OpenGL ES In Android
Sep 7, 2012How I can draw a sphere with opengl es in android?
View 1 Replies View RelatedAndroid :: Easiest Way To Draw Texture With OpenGL ES?
Feb 6, 2010the draw_texture function is the fastest and VBO is 2nd faster. But I don't understand how to use it(the draw_texture method or the VBO way).
View 2 Replies View RelatedAndroid :: Fastest Way To Draw A Lot Of Points In OpenGL ES?
Dec 26, 2009I'm making a game for android where I need to draw a lot of points that change position every frame. I use the ndk to get faster processing performance of the math/physics section of the game, so I need to use OpenGL to get the fastest performance. Right now, I make a texture every frame out of an array that holds the colors of every pixel. I am only able to get ~10 frames per second with this method. Is there anyway I could speed this up? ...
View 2 Replies View RelatedAndroid :: Draw Shape Within Shape Or Draw 2 Lines Around Shape
Jun 21, 2010I want to have a elmenent with a 2 color border outline. I can do a single color outline using the element, but this only allows me to draw a single line. I tried using 2 elements within my but that didnt work either. Is there a way to either draw a shape within a shape or draw 2 lines around my shape (which has rounded corners btw).
View 3 Replies View RelatedAndroid :: Draw Translucent Bitmaps Using Canvas Without Having To Resort To OpenGL?
Mar 17, 2010I have a Bitmap object and want to render it to a Canvas object with varying levels of translucency (i.e. make the whole bitmap partially see through). For example, I have sprites in a game (that are drawn over the top of a bitmap background) that I want to fade out from being opaque to being invisible. Can I do this without having to resort to OpenGL?
View 2 Replies View RelatedAndroid :: OpenGL Thread Suddenly Dead? (on Draw Frame No More Called)
Mar 22, 2010I have a problem with a suddenly dead(?) OpenGL Thread. After an indeterminate time (30 seconds to a couple of minutes) the onDrawFrame of the Renderer simply doesn't get called anymore. I get no exception, no ForceClose, no ActivityNotResponding, no nothing! I can still open the Menu, have another Handler/Runnable-cycle logging out "Alive", etc Recently I introduced some native stuff (physics-library). But I can verify that there is no native problem, as there is obviously no native crash and after the GLThread died, I can still do like: Log.d("Before native call") nativeCall(); Log.d("After native call") Maybe anyone of you experienced something similar to this?
View 4 Replies View RelatedAndroid :: Method To Draw Bitmaps Faster On Droid Canvas / OpenGL?
Jun 15, 2010I currently have a game written using the Android canvas. It is completely 2D, and I draw bitmaps as sprites on the canvas, and it technically works, but I have a few features that I need to add that will require drawing many more bitmaps on the screen, and there will be a lot more movement.
The app needs more power.
What is the best way to go from this method of drawing Bitmaps on a canvas to using OpenGL so I can draw them faster?
Android :: Draw Route Path Draw Function
Sep 5, 2010In my android application I use this method in "draw" Overlay class for draw route on map. Can someone tell me if this method is good (in terms of performance) for route draw on map or I must to put code in Thread ??
I'm new to android.
public synchronized void draw(Canvas canvas, MapView mapView, boolean shadow) {
if (pointsAndTimes.isEmpty()) {
return;
}
Projection projection = mapView.getProjection();
Paint paint = new Paint();
paint.setARGB(250, 255, 0, 0);.............
Android :: OpenGL Speed Issue - Code Contribution To Other OpenGL
Feb 25, 2009Single Threaded OpenGL game ! (check bottom, you can download and use the helper class) Lighting disabled ! Depth Buffer disabled ! Culling enabled ! Textures disabled !
Just 176 integers (x,y values only) making 88 vertexes along with 132 index numbers making "44 triangles only"
Framerates I get is
with GL_BLENDING disabled - 145 fps approx only! enabled - 110 fps approx only!
I have the screenshot of exact code in the draw function here.. just 2 damn lines ! I have hidden only the comments.. click here to see it http://prasna991.googlepages.com/drawframe.png
variable details in the 2 lines of code =========================== ipts = 176 elements (only x and y for each vertex) totallinetriangles * 3 = 176 lineindexes = 132 elements - type "short"
Here is the screenshot of output drawing and how it will look like http://prasna991.googlepages.com/screen.png
OpenGL single threaded Initialization Helper ================================ Here is my OpenGL helper class.. makes the OpenGL initialization for newbies a cakewalk http://prasna991.googlepages.com/OpenGLHelperclass.txt
I tested by rendering on the touch event only.. frame rate drops only when u touch and drag and here I have just tested by tapping and releasing gently on the emulator and on the device
Is this the device limitations ? So graphics is actually a lot lot lot slower than on iPhone ?
Android :: NDK OpenGL - Mixing Java And Native - C - Calls To OpenGL API
Jul 24, 2010I would like to be able to use the OpenGL API from both Java and C (via NDK).
In Java, there is a GL object passed, which has all GL methods on it.
In C, you just talk to the native library.
In a single onDrawFrame callback (for which Java is passed a GL), can I use methods on the GL object, and also call NDK methods which access the openGL library?
In other words, is the GL object just a wrapper for the same instance of the native library?
Android :: Does ShowAlert Now Take 5 Lines To Do Same?
Dec 7, 2009The subject says it all, just curious if I've missed something or does displaying a quick warning to the user require code such as the following; Dialog msg = new AlertDialog.Builder(Login.this) .setPositiveButton("OK", null) .setMessage("Please enter both login name and password") .create(); msg.show();
View 8 Replies View RelatedAndroid :: Need To Get Two Lines In A Row List View
Oct 5, 2010I am trying to get two lines in the same row in a list view and I looked at some things online but found it hard to apply to what I am trying to achieve. Could anyone look at my code please and suggest me how I can make it possible. Code...
View 7 Replies View RelatedAndroid :: Two Misplaced Lines In UI For Activity
Oct 4, 2010I have a problem with designing an UI Android activity. There are two blocks of misplaced graphics on the left and right of the activity - they are two lines just bellow the titlebar with 1px height and about 5-10px width. They cause buttons to break at their left and right parts. I cannot figure out what the problem is. I am using Eclipse with Android SDK 0.9.9. The lines appear not only with the emulator but in a HTC Wildfire (Android 2.1). These lines are also visible in a newly created Android project (HelloWorld).
Link to the Broken widgets - note the button's left and right sides
XML layout:
CODE:....................
Android :: Error When Having Edittext Lines
Oct 29, 2010This gives me error: EditText messageEdit = (EditText)findViewById(R.id.description_text);
Why can I not do like this on a eittext with lines?
This is how the Edittext looks like
CODE:.................
Android :: Way To Do Linear Layout With Multiple Lines?
Jun 20, 2009Is there a way to do a linear layout with multiple lines? I want to lay out a variable set of buttons with variable labels, so I'd like to use a layout that works as a simple horizontal LinearLayout, but with multiple lines, so the buttons spill into a second (or third) line if they don't fit on the first one.
View 3 Replies View RelatedAndroid :: Split Line Of Text Into Few Lines
Jul 29, 2010I'm wondering how can I split single line text into few lines. I need it for game. I want to make it in canvas. It will be notification popup, but sometimes text is too long (I draw text canvas.drawText()), and I need to split it and draw in few lines in rows. Anyone knows a good solution? I saw methods mPaint.measureText() or TextUtils . split () , but it isn't so good in my case. Is there other method?
View 5 Replies View RelatedAndroid :: Drawing Lines On Top Of A Image View
Jul 13, 2010I am trying to put a background image and draw on top of that screen. I assumed activity will have a on draw method, but it does not have. it seems i need to use surfaceview. Can I put a surfaceview on top of the image view and make it transparent ? any example/tutorial i can refer to ?
View 5 Replies View RelatedAndroid :: Drawing Simple Lines / Run On Emulator
Sep 16, 2009I've the following code I'm trying to run on emulator ( v 1.5 of OS), but it seems like I can't use the whole canvas! Code...
View 2 Replies View RelatedAndroid :: Emulator Bug Drawing Lines On GLSurfaceView
Aug 14, 2010The Emulator draws line widths VERY incorrectly in OpenGL (GLSurfaceView). See http://www.flickr.com/photos/53002505@N03 for a comparison of the lines drawn correctly (in JOGL) and incorrectly in the emulator. The code also draws correctly on a real device (G1) - looks just like the JOGL screen shot. I believe this is a bug. However, I'm not an OpenGL GURU. Hence I have posted a concise version of the code to demonstrate this problem at at http://gist.github.com/523955 and http://gist.github.com/523961. I hope I am proven wrong about a bug in the emulator, and can find a way to use the emulator for what I want to do.
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