android.graphics.Matrix.invert()方法的使用及代码示例

x33g5p2x  于2022-01-24 转载在 其他  
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本文整理了Java中android.graphics.Matrix.invert()方法的一些代码示例，展示了Matrix.invert()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Matrix.invert()方法的具体详情如下：
包路径：android.graphics.Matrix
类名称：Matrix
方法名：invert

Matrix.invert介绍

暂无

代码示例

代码示例来源：origin: PhilJay/MPAndroidChart

public Matrix getPixelToValueMatrix() {
    getValueToPixelMatrix().invert(mMBuffer2);
    return mMBuffer2;
  }
}

代码示例来源：origin: PhilJay/MPAndroidChart

/**
 * Transforms the given array of touch positions (pixels) (x, y, x, y, ...)
 * into values on the chart.
 *
 * @param pixels
 */
public void pixelsToValue(float[] pixels) {
  Matrix tmp = mPixelToValueMatrixBuffer;
  tmp.reset();
  // invert all matrixes to convert back to the original value
  mMatrixOffset.invert(tmp);
  tmp.mapPoints(pixels);
  mViewPortHandler.getMatrixTouch().invert(tmp);
  tmp.mapPoints(pixels);
  mMatrixValueToPx.invert(tmp);
  tmp.mapPoints(pixels);
}

代码示例来源：origin: andkulikov/Transitions-Everywhere

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

代码示例来源：origin: alexvasilkov/GestureViews

protected void applyState(State state) {
  state.get(matrix);
  matrix.invert(matrixInverse);
  invalidate();
}

代码示例来源：origin: ArthurHub/Android-Image-Cropper

/**
 * Gets the 4 points of crop window's position relative to the source Bitmap (not the image
 * displayed in the CropImageView) using the original image rotation.<br>
 * Note: the 4 points may not be a rectangle if the image was rotates to NOT stright angle (!=
 * 90/180/270).
 *
 * @return 4 points (x0,y0,x1,y1,x2,y2,x3,y3) of cropped area boundaries
 */
public float[] getCropPoints() {
 // Get crop window position relative to the displayed image.
 RectF cropWindowRect = mCropOverlayView.getCropWindowRect();
 float[] points =
   new float[] {
    cropWindowRect.left,
    cropWindowRect.top,
    cropWindowRect.right,
    cropWindowRect.top,
    cropWindowRect.right,
    cropWindowRect.bottom,
    cropWindowRect.left,
    cropWindowRect.bottom
   };
 mImageMatrix.invert(mImageInverseMatrix);
 mImageInverseMatrix.mapPoints(points);
 for (int i = 0; i < points.length; i++) {
  points[i] *= mLoadedSampleSize;
 }
 return points;
}

代码示例来源：origin: siyamed/android-shape-imageview

matrix.invert(pathMatrix);
path.transform(pathMatrix);

代码示例来源：origin: ArthurHub/Android-Image-Cropper

mImageMatrix.invert(mImageInverseMatrix);
mImageInverseMatrix.mapRect(BitmapUtils.RECT);

代码示例来源：origin: alexvasilkov/GestureViews

private void selectItem(float eventX, float eventY) {
  // Getting first item (in backward order) which contains given click event
  for (int i = items.size() - 1; i >= 0; i--) {
    Item item = items.get(i);
    item.getState().get(matrix);
    matrix.invert(inverseMatrix);
    // Taking item's rotation into account
    point[0] = eventX;
    point[1] = eventY;
    inverseMatrix.mapPoints(point);
    int newX = Math.round(point[0]);
    int newY = Math.round(point[1]);
    // Checking if click event is within item's bounds
    Rect bounds = images.get(item.getImageId()).getBounds();
    if (bounds.contains(newX, newY)) {
      selectItem(item);
      return;
    }
  }
  selectItem(null);
}

代码示例来源：origin: robolectric/robolectric

private static void checkInverse(Matrix matrix) {
  final Matrix inverse = new Matrix();
  assertThat(matrix.invert(inverse))
    .isTrue();
  matrix.postConcat(inverse);
  assertThat(matrix.isIdentity())
    .isTrue();
 }
}

代码示例来源：origin: alexvasilkov/GestureViews

public static void computeNewPosition(@Size(2) float[] point,
    State initialState, State finalState) {
  initialState.get(tmpMatrix);
  tmpMatrix.invert(tmpMatrixInverse);
  tmpMatrixInverse.mapPoints(point);
  finalState.get(tmpMatrix);
  tmpMatrix.mapPoints(point);
}

代码示例来源：origin: robolectric/robolectric

@Test
public void testInvert() {
 final Matrix matrix = new Matrix();
 final Matrix inverse = new Matrix();
 matrix.setScale(0.0f, 1.0f);
 assertThat(matrix.invert(inverse))
   .isFalse();
 matrix.setScale(1.0f, 0.0f);
 assertThat(matrix.invert(inverse))
   .isFalse();
 matrix.setScale(1.0f, 1.0f);
 checkInverse(matrix);
 matrix.setScale(-3.0f, 5.0f);
 checkInverse(matrix);
 matrix.setTranslate(5.0f, 2.0f);
 checkInverse(matrix);
 matrix.setScale(-3.0f, 5.0f);
 matrix.postTranslate(5.0f, 2.0f);
 checkInverse(matrix);
 matrix.setScale(-3.0f, 5.0f);
 matrix.postRotate(-30f, 1.0f, 2.0f);
 matrix.postTranslate(5.0f, 2.0f);
 checkInverse(matrix);
}

代码示例来源：origin: ArthurHub/Android-Image-Cropper

mImageMatrix.invert(mImageInverseMatrix);

代码示例来源：origin: ArthurHub/Android-Image-Cropper

if (mBitmap != null && width > 0 && height > 0) {
 mImageMatrix.invert(mImageInverseMatrix);
 RectF cropRect = mCropOverlayView.getCropWindowRect();
 mImageInverseMatrix.mapRect(cropRect);

代码示例来源：origin: DaxiaK/MyDiary

/**
 * Maps point from view-absolute to image-relative coordinates.
 * This takes into account the zoomable transformation.
 */
public PointF mapViewToImage(PointF viewPoint) {
 float[] points = mTempValues;
 points[0] = viewPoint.x;
 points[1] = viewPoint.y;
 mActiveTransform.invert(mActiveTransformInverse);
 mActiveTransformInverse.mapPoints(points, 0, points, 0, 1);
 mapAbsoluteToRelative(points, points, 1);
 return new PointF(points[0], points[1]);
}

代码示例来源：origin: guolindev/giffun

mImageMatrix.invert(mImageInverseMatrix);
mImageInverseMatrix.mapRect(BitmapUtils.RECT);

代码示例来源：origin: guolindev/giffun

/**
 * Gets the 4 points of crop window's position relative to the source Bitmap (not the image
 * displayed in the CropImageView) using the original image rotation.<br>
 * Note: the 4 points may not be a rectangle if the image was rotates to NOT stright angle (!=
 * 90/180/270).
 *
 * @return 4 points (x0,y0,x1,y1,x2,y2,x3,y3) of cropped area boundaries
 */
public float[] getCropPoints() {
 // Get crop window position relative to the displayed image.
 RectF cropWindowRect = mCropOverlayView.getCropWindowRect();
 float[] points =
   new float[] {
    cropWindowRect.left,
    cropWindowRect.top,
    cropWindowRect.right,
    cropWindowRect.top,
    cropWindowRect.right,
    cropWindowRect.bottom,
    cropWindowRect.left,
    cropWindowRect.bottom
   };
 mImageMatrix.invert(mImageInverseMatrix);
 mImageInverseMatrix.mapPoints(points);
 for (int i = 0; i < points.length; i++) {
  points[i] *= mLoadedSampleSize;
 }
 return points;
}

代码示例来源：origin: guolindev/giffun

mImageMatrix.invert(mImageInverseMatrix);

代码示例来源：origin: guolindev/giffun

if (mBitmap != null && width > 0 && height > 0) {
 mImageMatrix.invert(mImageInverseMatrix);
 RectF cropRect = mCropOverlayView.getCropWindowRect();
 mImageInverseMatrix.mapRect(cropRect);

代码示例来源：origin: WallaceXiao/StockChart-MPAndroidChart

public Matrix getPixelToValueMatrix() {
    getValueToPixelMatrix().invert(mMBuffer2);
    return mMBuffer2;
  }
}

代码示例来源：origin: fookwood/Launcher3

private float[] mapPointFromParentToView(View v, float x, float y) {
  sTmpPoint[0] = x - v.getLeft();
  sTmpPoint[1] = y - v.getTop();
  v.getMatrix().invert(sTmpInvMatrix);
  sTmpInvMatrix.mapPoints(sTmpPoint);
  return sTmpPoint;
}

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