Android

Re: I want to make an android application to add custom place and show on google map

8-Nov-16 2:19

This type of mobile app can be found all over the Internet. The first three hits from here[^] would be a good starting point.

Which part do you need help with SPECIFICALLY?

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ZurdoDev17-Nov-16 0:59

ZurdoDev

17-Nov-16 0:59

Member 12838657 wrote:
please help me to make this app

How can we help?

There are only 10 types of people in the world, those who understand binary and those who don't.

problem whith warp photo in android

mr ar30-Oct-16 7:58

mr ar

30-Oct-16 7:58

i'm developing an app with warp function but my code does not working peoperly
i need to move pixels with fingers like liquify in PS
any help would be great.
tnx

Java

private static final int WIDTH = 20;
    private static final int HEIGHT = 20;
    private static final int COUNT = (WIDTH + 1) * (HEIGHT + 1);

    private final Bitmap mBitmap;
    private final float[] mVerts = new float[COUNT * 2];
    private final float[] mOrig = new float[COUNT * 2];

    private final Matrix mMatrix = new Matrix();
    private final Matrix mInverse = new Matrix();
    private float[] matrixInverse;
    private int mLastWarpX = -9999; // don&#39;t match a touch coordinate
    private int mLastWarpY;

    private static void setXY(float[] array, int index, float x, float y) {
        array[(index * 2)] = x;
        array[(index * 2) + 1] = y;
    }

    public Warp(Bitmap imgBitmap, float i, float j, Canvas myCanvas) {
        mBitmap = imgBitmap;
        float w = mBitmap.getWidth();
        float h = mBitmap.getHeight();
        // construct our mesh
        int index = 0;
        for (int y = 0; y &lt;= HEIGHT; y++) {
            float fy = h * y / HEIGHT;
            for (int x = 0; x &lt;= WIDTH; x++) {
                float fx = w * x / WIDTH;
                setXY(mVerts, index, fx, fy);
                setXY(mOrig, index, fx, fy);
                index++;
            }
        }

        // mMatrix.setTranslate(10, 10);
        mMatrix.invert(mInverse);

        float[] pt = {i, j};
        mInverse.mapPoints(pt);
        int x = (int) pt[0];
        int y = (int) pt[1];
        if (mLastWarpX != x || mLastWarpY != y) {
            mLastWarpX = x;
            mLastWarpY = y;
            draw(pt[0], pt[1], myCanvas);

        }

    }

    private void draw(float cx, float cy, Canvas canvas) {

        final float K = 10000;
        float[] src = mOrig;
        float[] dst = mVerts;
        for (int i = 0; i &lt; COUNT * 2; i += 2) {
            float x = src[i + 0];
            float y = src[i + 1];
            float dx = cx - x;
            float dy = cy - y;
            float dd = dx * dx + dy * dy;
            float d = dd/2;//(float) Math.sqrt(dd);
            float pull = K / (dd + 0.000001f);

            pull /= (d + 0.000001f);
            //   android.util.Log.d(&quot;skia&quot;, &quot;index &quot; + i + &quot; dist=&quot; + d + &quot; pull=&quot; + pull);

            if (pull &gt;= 1) {
                dst[i + 0] = cx;
                dst[i + 1] = cy;
            } else {
                dst[i + 0] = x + dx * pull;
                dst[i + 1] = y + dy * pull;
            }
        }

        canvas.drawColor(0xFFCCCCCC);
        canvas.concat(mMatrix);
        canvas.drawBitmapMesh(mBitmap, WIDTH, HEIGHT, mVerts, 0,
                null, 0, null);


    }

David Crow30-Oct-16 16:14

30-Oct-16 16:14

mr ar wrote:
...but my code does not working peoperly

And we're supposed to be able to decipher this?

Exactly what does not work?
What is it supposed to do? What is it doing instead?
What did you find when you stepped through the code using the debugger?
Have you narrowed the code down to just a few lines of code rather than several dozen, most of which is irrelevant?

mr ar30-Oct-16 21:18

mr ar

30-Oct-16 21:18

i want something like this :
[^]

my code just makes some distortion in the thoched point and minimizes the area.

unfortunately i did not find any primary line in the code they are very hard to understand Frown | :(

i thought this feature is already known to everyone Thumbs Up | :thumbsup:

thank you for reply Rose | [Rose]

David Crow31-Oct-16 2:34

31-Oct-16 2:34

mr ar wrote:
...they are very hard to understand

Um, it's your code, isn't it?

mr ar wrote:
i thought this feature is already known to everyone

Why in the world would you think this?

mr ar31-Oct-16 2:42

mr ar

31-Oct-16 2:42

you sound like a doctor Hmmm | :|

this code is everywhere i just change it a little bit for fit inside a class

i managed to do some changes with changing

Java

final float K = 10000;
        float[] src = mOrig;
        float[] dst = mVerts;
        for (int i = 0; i < COUNT * 2; i += 2) {
            float x = src[i + 0];
            float y = src[i + 1];
            float dx = cx - x;
            float dy = cy - y;
            float dd = (dx * dx + dy * dy) /2;
            float d = (float) Math.pow(dd, 2);
            float pull = K / (dd + 0.000001f);

i bold them!
it still does wrong action but much better than previous one

do you have any solution?

David Crow31-Oct-16 2:58

31-Oct-16 2:58

mr ar wrote:

do you have any solution?

To what? You've shown a few random pieces of code, but haven't explained what they are doing nor what they are supposed to do.

DanielMarkus4-Nov-16 6:41

DanielMarkus

4-Nov-16 6:41

Interesting

Plot Isobar n Google Map Api v2

DanielMarkus4-Nov-16 6:42

DanielMarkus

4-Nov-16 6:42

lakhwinder12jan26-Oct-16 21:01

lakhwinder12jan

26-Oct-16 21:01

By reading Pressure data from Grib2 File , i have to plot it using (isobars) on google map in my Xamarin.Android/Android App , I search from internet regarding this ,but not getting much help.
Help me how to plot isobars on Google Maps V2

modified 27-Oct-16 3:55am.

Richard MacCutchan26-Oct-16 21:56

26-Oct-16 21:56

See plot it using (isobars) on google map - Google Search[^].

David Crow27-Oct-16 4:53

27-Oct-16 4:53

Funny how the first three results from that search are from the OP! Roll eyes | :rolleyes:

Richard MacCutchan27-Oct-16 4:58

27-Oct-16 4:58

Yeah, made me chuckle.

David Crow27-Oct-16 4:57

27-Oct-16 4:57

lakhwinder12jan wrote:

Help me how to plot isobars on Google Maps V2

Which part exactly are you having trouble with? Are you able to create an activity that displays a (Google) map? If you can't get this far, everything else is pointless. Are you able to add a layer to that map with a point/pin on it? Focus on adding one before bothering with dozens or hundreds. Break this project down into 4-5 smaller projects and handle those incrementally rather than trying to solve the larger project all at once.

Richard MacCutchan27-Oct-16 4:59

27-Oct-16 4:59

Funny how so many people these days think they can build a Ferrari before they have even tried building a Go-kart.

David Crow27-Oct-16 5:01

27-Oct-16 5:01

That seems to be the mentality of the current generation. Frown | :(

ZurdoDev27-Oct-16 6:00

ZurdoDev

27-Oct-16 6:00

DavidCrow wrote:
Focus on adding one before bothering with dozens or hundreds. Break this project down into 4-5 smaller projects and handle those incrementally rather than trying to solve the larger project all at once.

I wish this was more common sense. Thumbs Up | :thumbsup:

There are only 10 types of people in the world, those who understand binary and those who don't.

lakhwinder12jan27-Oct-16 21:36

lakhwinder12jan

27-Oct-16 21:36

Hi David ,i have finished reading grib2 file,and also have ideas regarding how to draw isobars ,but i want to know which appproach to follow to draw isobar on google map , either use tile overlays or i can use poly lines to draw isobar , or is there any other better way to do this .

And i already break down the job into small parts , like plotting basic map , downloading grib2 file , reading grib2 file , filter pressure data from grib2 file and plotting pressure as isobars on google maps .

So now i am on my last point of plotting isobar on google maps.

If you have some better ideas or findings related to this ,plz share with me .

Thanks ..

code android multiple table with insert, delete, update

ZurdoDev28-Oct-16 0:45

ZurdoDev

28-Oct-16 0:45

You replied to the wrong message.

There are only 10 types of people in the world, those who understand binary and those who don't.

Member 1279832617-Oct-16 6:47

Member 12798326

17-Oct-16 6:47

How to create an application project with multiple table?

Re: code android multiple table with insert, delete, update

Richard MacCutchan17-Oct-16 7:54

Re: code android multiple table with insert, delete, update

17-Oct-16 7:54

Obviously by writing some code. But if you want a more useful answer then please explain your problem in proper detail, including what you mean by "project with multiple table".

David Crow17-Oct-16 10:21