Example usage for android.graphics Matrix invert

Introduction

In this page you can find the example usage for android.graphics Matrix invert.

Prototype

public boolean invert(Matrix inverse) 

Source Link

Document

If this matrix can be inverted, return true and if inverse is not null, set inverse to be the inverse of this matrix.

Usage

From source file:Main.java

/**
 * Gets invert matrix./*from www  .  j  a v a2 s .com*/
 *
 * @param matrix original matrix
 * @return invert matrix
 */
public static Matrix getInvertMatrix(Matrix matrix) {
    Matrix invertMatrix = new Matrix();
    matrix.invert(invertMatrix);
    return invertMatrix;
}

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From source file:Main.java

/**
 * Calculates the transformation matrix according to M(transformation) * M(source) = M(target).
 *
 * @param source source matrix/*from   www .  j  av a2s  .  c  o m*/
 * @param target target matrix
 * @return delta matrix
 */
public static Matrix getTransformationMatrix(Matrix source, Matrix target) {
    Matrix delta = new Matrix();
    source.invert(delta);
    delta.postConcat(target);
    return delta;
}

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From source file:com.almalence.util.Util.java

public static void initializeMeteringMatrix() {
    Matrix matrix = new Matrix();
    Util.prepareMatrix(matrix, CameraController.isFrontCamera(), 0, ApplicationScreen.getPreviewWidth(),
            ApplicationScreen.getPreviewHeight());
    matrix.invert(mMeteringMatrix);
}

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From source file:com.mediatek.galleryfeature.stereo.segment.ImageShow.java

/**
 * This function calculates a screen to image Transformation matrix.
 *
 * @param reflectRotation//  ww  w.ja v a  2  s.com
 *            set true if you want the rotation encoded.
 *            TODO useless, to be removed.
 * @return Screen to Image transformation matrix
 */
protected Matrix getScreenToImageMatrix(boolean reflectRotation) {
    Rect originalBounds = mMasterImage.getOriginalBounds();
    int imgWidth = originalBounds.width();
    int imgHeight = originalBounds.height();

    Matrix m = mMasterImage.getImageToScreenMatrix(imgWidth, imgHeight, getWidth(), getHeight());
    Matrix invert = new Matrix();
    m.invert(invert);
    return invert;
}

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From source file:android.support.transition.ChangeTransform.java

private void setMatricesForParent(TransitionValues startValues, TransitionValues endValues) {
    Matrix endParentMatrix = (Matrix) endValues.values.get(PROPNAME_PARENT_MATRIX);
    endValues.view.setTag(R.id.parent_matrix, endParentMatrix);

    Matrix toLocal = mTempMatrix;/*from w w w.j av a2 s .c om*/
    toLocal.reset();
    endParentMatrix.invert(toLocal);

    Matrix startLocal = (Matrix) startValues.values.get(PROPNAME_MATRIX);
    if (startLocal == null) {
        startLocal = new Matrix();
        startValues.values.put(PROPNAME_MATRIX, startLocal);
    }

    Matrix startParentMatrix = (Matrix) startValues.values.get(PROPNAME_PARENT_MATRIX);
    startLocal.postConcat(startParentMatrix);
    startLocal.postConcat(toLocal);
}

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From source file:com.android.gallery3d.filtershow.imageshow.ImageShow.java

/**
 * This function calculates a to Screen Image Transformation matrix
 *
 * @param reflectRotation set true if you want the rotation encoded
 * @return Screen to Image transformation matrix
 *///from w ww. ja v a 2  s .co  m
protected Matrix getScreenToImageMatrix(boolean reflectRotation) {
    Matrix m = getImageToScreenMatrix(reflectRotation);
    Matrix invert = new Matrix();
    m.invert(invert);
    return invert;
}

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From source file:com.fractview.ImageViewFragment.java

private void applyTouch(Matrix bitmapMatrix, Matrix prefsMatrix) {
    // Did we only move?
    final float[] bm = new float[9];
    bitmapMatrix.getValues(bm);//from  w ww . j  a va  2s .  c  om

    if (bm[0] == 1f && bm[1] == 0f && bm[3] == 0f && bm[4] == 1f) {
        Log.d(TAG, "We only moved!");
        taskFragment.modifyImage(new UnsafeImageEditor() {
            @Override
            public void edit(AbstractImgCache cache) {
                ScaleableCache scaleable = (ScaleableCache) cache;
                scaleable.move((int) Math.round(bm[2]), (int) Math.round(bm[5]));
            }
        }, true);
    } else {
        // Update zoom
        Log.d(TAG, "We need to scale");
        Matrix m = new Matrix();
        prefsMatrix.invert(m);

        final float[] matrix = new float[9];
        m.getValues(matrix);

        taskFragment.modifyImage(new UnsafeImageEditor() {
            @Override
            public void edit(AbstractImgCache cache) {
                ScaleableCache scaleable = (ScaleableCache) cache;
                scaleable.newRelativeScale(matrix);
            }
        }, true);
    }
}

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From source file:com.android.gallery3d.filtershow.imageshow.ImageShow.java

private void drawHighresImage(Canvas canvas, Bitmap fullHighres) {
    Matrix originalToScreen = MasterImage.getImage().originalImageToScreen();
    if (fullHighres != null && originalToScreen != null) {
        Matrix screenToOriginal = new Matrix();
        originalToScreen.invert(screenToOriginal);
        Rect rBounds = new Rect();
        rBounds.set(MasterImage.getImage().getPartialBounds());
        if (fullHighres != null) {
            originalToScreen.preTranslate(rBounds.left, rBounds.top);
            canvas.clipRect(mImageBounds);
            canvas.drawBitmap(fullHighres, originalToScreen, mPaint);
        }//from   w w w . j  a  va  2s .  c om
    }
}

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From source file:com.ezartech.ezar.videooverlay.ezAR.java

private void updateMatrix() {
    Matrix workMatrix = new Matrix();
    Size sz = getWebViewSize();//from   w w  w  .j  a  va  2  s . c o  m

    Util.prepareMatrix(workMatrix, isMirror(), getDisplayOrientation(), sz.width, sz.height);

    // In face detection, the matrix converts the driver coordinates to UI
    // coordinates. In tap focus, the inverted matrix converts the UI
    // coordinates to driver coordinates.
    workMatrix.invert(matrix);
}

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From source file:com.pdftron.pdf.tools.Tool.java

public void onDraw(Canvas canvas, android.graphics.Matrix tfm) {
    // Draw page number
    if (mShowPageNum && mPageNumberIndicatorVisible) {
        int width = mPDFView.getWidth();
        int height = mPDFView.getHeight();
        int page_num = mPDFView.getCurrentPage();
        boolean restore = false;
        float yOffset = 0;

        try {/*from  w  w w .  ja  v  a  2s . c o  m*/
            // During page sliding, PDFViewCtrl might apply extra transformation
            // matrix to Canvas for animation. However, page number should not
            // move; hence applying the inverse to offset it.
            if (!tfm.isIdentity()) {
                canvas.save();
                restore = true;
                tfm.invert(mTempMtx1);
                canvas.getMatrix(mTempMtx2);
                mTempMtx2.postConcat(mTempMtx1);
                canvas.setMatrix(mTempMtx2);

                // Workaround for bug found in Android > ICS with hardware acceleration turned
                // ON. See http://code.google.com/p/android/issues/detail?id=24517 for more info
                if (Build.VERSION.SDK_INT >= 14
                        /*Build.VERSION_CODES.ICE_CREAM_SANDWICH*/ && mPDFView.isHardwareAccelerated()) {
                    Rect rectangle = new Rect();
                    ((android.app.Activity) mPDFView.getContext()).getWindow().getDecorView()
                            .getWindowVisibleDisplayFrame(rectangle);
                    yOffset = rectangle.top;
                }
            }

            int page_count = mPDFView.getDoc().getPageCount();
            String str = String.format(getStringFromResId(R.string.tools_misc_pagerange), page_num, page_count);

            Rect r = new Rect();
            mPaint4PageNum.getTextBounds(str, 0, str.length(), r);
            float str_width = r.width();
            float str_height = r.height();

            float margin = str_height / 1.5f;
            float left = width - str_width * 1.5f - margin + mPDFView.getScrollX();

            float top = mPDFView.getScrollY() + height - mPageNumPosAdjust - str_height * 3.0f + yOffset;

            float right = left + str_width + margin * 2;
            float bottom = top + str_height + margin * 2;

            mTempPageDrawingRectF.set(left, top, right, bottom);
            mPaint4PageNum.setColor(
                    mPDFView.getContext().getResources().getColor(R.color.tools_pageindicator_background));
            canvas.drawRoundRect(mTempPageDrawingRectF, margin, margin, mPaint4PageNum);

            mPaint4PageNum
                    .setColor(mPDFView.getContext().getResources().getColor(R.color.tools_pageindicator_text));
            left += margin;
            top += str_height / 2 + margin + mPaint4PageNum.descent();

            canvas.drawText(str, left, top - 0.5f, mPaint4PageNum);

        } catch (Exception e) {

        } finally {
            if (restore) {
                canvas.restore();
            }
        }
    }
}

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