Example usage for android.view MotionEvent getHistoricalSize

Introduction

In this page you can find the example usage for android.view MotionEvent getHistoricalSize.

Prototype

public final float getHistoricalSize(int pos) 

Source Link

Document

#getHistoricalSize(int,int) for the first pointer index (may be an arbitrary pointer identifier).

Usage

From source file:com.p3authentication.preferences.Prefs.java

@SuppressWarnings("static-access")
@Override//  w w w. j av  a  2s  .com
public boolean onTouch(View v, MotionEvent event) {
    // TODO Auto-generated method stub
    int action = event.getAction();
    int N = event.getHistorySize();
    if (action == event.ACTION_DOWN) {
        calibrator.setColorFilter(Color.BLACK);
        for (int i = 0; i < N; i++) {
            calibrate(event.getHistoricalX(i), event.getHistoricalY(i), event.getHistoricalPressure(i),
                    event.getHistoricalSize(i));
        }
        calibrate(event.getX(), event.getY(), event.getPressure(), event.getSize());
    } else if (action == event.ACTION_UP) {
        Float temp = Collections.max(CalList);
        temp = (float) Math.ceil((Double.parseDouble(Float.valueOf(temp).toString())) / 10);
        LargeValue = temp * 10;
        calibrator.setColorFilter(Color.GREEN);
        // Largest.setText(String.valueOf(LargeValue));

    }

    return true;
}

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From source file:co.adrianblan.fastbrush.MyGLSurfaceView.java

@Override
public boolean onTouchEvent(MotionEvent e) {
    // MotionEvent reports input details from the touch screen
    // and other input controls. In this case, you are only
    // interested in events where the touch position changed.

    switch (e.getAction()) {

    case MotionEvent.ACTION_DOWN:
        if (mVelocityTracker == null) {
            mVelocityTracker = VelocityTracker.obtain();
        } else {/*w  w  w . j  av  a 2  s. c o m*/
            mVelocityTracker.clear();
        }

        queueEvent(new Runnable() {
            @Override
            public void run() {
                mRenderer.touchHasStarted();
            }
        });

        // No break is intentional

    case MotionEvent.ACTION_MOVE:

        mVelocityTracker.addMovement(e);

        // Compute velocity in pixels per second
        mVelocityTracker.computeCurrentVelocity(1);

        final ArrayList<TouchData> touchDataList = new ArrayList<>(e.getHistorySize() + 1);
        Vector2 viewportPosition;

        Vector2 viewportVelocity = new Vector2(
                VelocityTrackerCompat.getXVelocity(mVelocityTracker, e.getActionIndex()),
                VelocityTrackerCompat.getYVelocity(mVelocityTracker, e.getActionIndex()));

        // Add previous touch coordinates
        for (int i = 0; i < e.getHistorySize(); i++) {
            viewportPosition = new Vector2(e.getHistoricalX(i), e.getHistoricalY(i));

            touchDataList.add(new TouchData(mRenderer.viewportToWorld(viewportPosition), viewportVelocity,
                    e.getHistoricalSize(i), e.getHistoricalPressure(i)));
        }

        // Add current touch coordinates
        viewportPosition = new Vector2(e.getX(), e.getY());
        touchDataList.add(new TouchData(mRenderer.viewportToWorld(viewportPosition), viewportVelocity,
                e.getSize(), e.getPressure()));

        // Ensure we call switchMode() on the OpenGL thread.
        // queueEvent() is a method of GLSurfaceView that will do this for us.
        queueEvent(new Runnable() {
            @Override
            public void run() {
                mRenderer.addTouchData(touchDataList);
            }
        });

        requestRender();
        break;

    case MotionEvent.ACTION_UP:

        queueEvent(new Runnable() {
            @Override
            public void run() {
                mRenderer.touchHasEnded();
            }
        });
        requestRender();
        break;
    }
    return true;
}

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