private Path CreateMotherMovePath()
{
Path path = new Path();
float CenterX = mCurrentBounds.CenterX();
float CenterY = mCurrentBounds.CenterY();
float currentPathLength = 0.0f;
path.MoveTo(CenterX, CenterY);
//forward top left
path.QuadTo(CenterX - mMotherOvalHalfWidth * 2.0f, CenterY, CenterX - mMotherOvalHalfWidth * 2.0f, CenterY - mMotherOvalHalfHeight);
mStageMotherForwardTopLeftLength = GetRestLength(path, currentPathLength);
currentPathLength += mStageMotherForwardTopLeftLength;
//backward top left
path.QuadTo(CenterX - mMotherOvalHalfWidth * 1.0f, CenterY - mMotherOvalHalfHeight, CenterX, CenterY);
mStageMotherBackwardTopLeftLength = GetRestLength(path, currentPathLength);
currentPathLength += mStageMotherBackwardTopLeftLength;
//forward bottom left
path.QuadTo(CenterX, CenterY + mMotherOvalHalfHeight, CenterX - mMotherOvalHalfWidth / 2, CenterY + mMotherOvalHalfHeight * 1.1f);
mStageMotherForwardBottomLeftLength = GetRestLength(path, currentPathLength);
currentPathLength += mStageMotherForwardBottomLeftLength;
//backward bottom left
path.QuadTo(CenterX - mMotherOvalHalfWidth / 2, CenterY + mMotherOvalHalfHeight * 0.6f, CenterX, CenterY);
mStageMotherBackwardBottomLeftLength = GetRestLength(path, currentPathLength);
return(path);
}
private Path CreateCannulaHeadPath(RectF cannulaRect)
{
Path path = new Path();
path.MoveTo(cannulaRect.Left, cannulaRect.Top);
path.LineTo(cannulaRect.Right, cannulaRect.Top);
path.MoveTo(cannulaRect.CenterX(), cannulaRect.Top);
path.LineTo(cannulaRect.CenterX(), cannulaRect.Bottom - 0.833f * cannulaRect.Width());
return(path);
}
protected override void OnDraw(Android.Graphics.Canvas canvas)
{
var rect = new RectF(0, 0, 300, 300);
switch (Shape)
{
case Shape.Circle:
canvas.DrawOval(rect, new Paint() { Color = Color.CornflowerBlue });
break;
case Shape.Square:
canvas.DrawRect(rect, new Paint() { Color = Color.Crimson });
break;
case Shape.Triangle:
var path = new Path();
path.MoveTo(rect.CenterX(), rect.Top);
path.LineTo(rect.Left, rect.Bottom);
path.LineTo(rect.Right, rect.Bottom);
path.Close();
var paint = new Paint() {Color = Color.Crimson};
paint.Color = Color.Gold;
paint.SetStyle(Paint.Style.Fill);
canvas.DrawPath(path, paint);
break;
default:
throw new ArgumentOutOfRangeException();
}
}
public override void Draw(Android.Graphics.Canvas canvas)
{
base.Draw(canvas);
var rect = new RectF(0,0,300,300);
switch (TheShape)
{
case Shape.Circle:
canvas.DrawOval(rect, new Paint() { Color = Color.Aqua });
break;
case Shape.Square:
canvas.DrawRect(rect, new Paint() { Color = Color.Red });
break;
case Shape.Triangle:
var path = new Path();
path.MoveTo(rect.CenterX(), 0);
path.LineTo(0, rect.Height());
path.LineTo(rect.Width(), rect.Height());
path.Close();
var paint = new Paint() {Color = Color.Magenta};
paint.SetStyle(Paint.Style.Fill);
canvas.DrawPath(path, paint);
break;
default:
throw new ArgumentOutOfRangeException();
}
}
private RectF CreateRightEyeBall(RectF arcBounds, float offsetY)
{
//the center of the right eye
float rightEyeCenterX = arcBounds.CenterX() + mEyeInterval / 2.0f + mEyeCircleRadius;
float rightEyeCenterY = arcBounds.CenterY() - mEyeBallOffsetY + offsetY;
RectF rectF = new RectF(rightEyeCenterX - mEyeBallWidth / 2.0f, rightEyeCenterY - mEyeBallHeight / 2.0f, rightEyeCenterX + mEyeBallWidth / 2.0f, rightEyeCenterY + mEyeBallHeight / 2.0f);
return(rectF);
}
protected override void Draw(Canvas canvas, Rect bounds)
{
int saveCount = canvas.Save();
mTempBounds.Set(bounds);
mTempBounds.Inset(mStrokeInset, mStrokeInset);
mCurrentBounds.Set(mTempBounds);
float outerCircleRadius = Math.Min(mTempBounds.Height(), mTempBounds.Width()) / 2.0f;
float interCircleRadius = outerCircleRadius / 2.0f;
float centerRingWidth = interCircleRadius - mStrokeWidth / 2;
mPaint.SetStyle(Paint.Style.Stroke);
mPaint.Color = new Color(mColor);
mPaint.StrokeWidth = mStrokeWidth;
canvas.DrawCircle(mTempBounds.CenterX(), mTempBounds.CenterY(), outerCircleRadius, mPaint);
mPaint.SetStyle(Paint.Style.Fill);
canvas.DrawCircle(mTempBounds.CenterX(), mTempBounds.CenterY(), interCircleRadius * mScale, mPaint);
if (mRotation != 0)
{
mPaint.Color = new Color(mArcColor);
mPaint.SetStyle(Paint.Style.Stroke);
//strokeWidth / 2.0f + mStrokeWidth / 2.0f is the center of the inter circle width
mTempBounds.Inset(centerRingWidth / 2.0f + mStrokeWidth / 2.0f, centerRingWidth / 2.0f + mStrokeWidth / 2.0f);
mPaint.StrokeWidth = centerRingWidth;
canvas.DrawArc(mTempBounds, RING_START_ANGLE, mRotation, false, mPaint);
}
mPaint.Color = new Color(mColor);
mPaint.SetStyle(Paint.Style.Fill);
for (int i = 0; i < NUM_POINTS; i++)
{
canvas.Rotate(i * DANCE_INTERVAL_ANGLE, POINT_X[i], POINT_Y[i]);
RectF rectF = new RectF(POINT_X[i] - mDanceBallRadius - mShapeChangeWidth / 2.0f, POINT_Y[i] - mDanceBallRadius - mShapeChangeHeight / 2.0f, POINT_X[i] + mDanceBallRadius + mShapeChangeWidth / 2.0f, POINT_Y[i] + mDanceBallRadius + mShapeChangeHeight / 2.0f);
canvas.DrawOval(rectF, mPaint);
canvas.Rotate(-i * DANCE_INTERVAL_ANGLE, POINT_X[i], POINT_Y[i]);
}
canvas.RestoreToCount(saveCount);
}
protected internal override void ComputeRender(float renderProgress)
{
RectF arcBounds = mCurrentBounds;
//compute gas tube bounds
mGasTubeBounds.Set(arcBounds.CenterX() - mGasTubeWidth / 2.0f, arcBounds.CenterY(), arcBounds.CenterX() + mGasTubeWidth / 2.0f, arcBounds.CenterY() + mGasTubeHeight);
//compute pipe body bounds
mPipeBodyBounds.Set(arcBounds.CenterX() + mGasTubeWidth / 2.0f - mPipeBodyWidth / 2.0f, arcBounds.CenterY() - mPipeBodyHeight, arcBounds.CenterX() + mGasTubeWidth / 2.0f + mPipeBodyWidth / 2.0f, arcBounds.CenterY());
//compute cannula bounds
mCannulaBounds.Set(arcBounds.CenterX() + mGasTubeWidth / 2.0f - mCannulaWidth / 2.0f, arcBounds.CenterY() - mCannulaHeight - mCannulaOffsetY, arcBounds.CenterX() + mGasTubeWidth / 2.0f + mCannulaWidth / 2.0f, arcBounds.CenterY() - mCannulaOffsetY);
//compute balloon bounds
float insetX = mBalloonWidth * 0.333f * (1 - mProgress);
float insetY = mBalloonHeight * 0.667f * (1 - mProgress);
mBalloonBounds.Set(arcBounds.CenterX() - mGasTubeWidth / 2.0f - mBalloonWidth / 2.0f + insetX, arcBounds.CenterY() - mBalloonHeight + insetY, arcBounds.CenterX() - mGasTubeWidth / 2.0f + mBalloonWidth / 2.0f - insetX, arcBounds.CenterY());
if (renderProgress <= START_INHALE_DURATION_OFFSET)
{
mCannulaBounds.Offset(0, -mCannulaMaxOffsetY * renderProgress / START_INHALE_DURATION_OFFSET);
mProgress = 0.0f;
mProgressText = 10 + PERCENT_SIGN;
mPaint.TextSize = mTextSize;
mPaint.GetTextBounds(mProgressText, 0, mProgressText.Length, mProgressBounds);
}
else
{
float exhaleProgress = ACCELERATE_INTERPOLATOR.GetInterpolation(1.0f - (renderProgress - START_INHALE_DURATION_OFFSET) / (1.0f - START_INHALE_DURATION_OFFSET));
mCannulaBounds.Offset(0, -mCannulaMaxOffsetY * exhaleProgress);
mProgress = 1.0f - exhaleProgress;
mProgressText = AdjustProgress((int)(exhaleProgress * 100.0f)) + PERCENT_SIGN;
mPaint.TextSize = mTextSize;
mPaint.GetTextBounds(mProgressText, 0, mProgressText.Length, mProgressBounds);
}
}
public Transition(RectF srcRect, RectF dstRect, long duration, IInterpolator interpolator) {
if (!MathUtils.HaveSameAspectRatio(srcRect, dstRect)) {
throw new IncompatibleRatioException();
}
_mSrcRect = srcRect;
_mDstRect = dstRect;
_mDuration = duration;
_mInterpolator = interpolator;
// Precomputes a few variables to avoid doing it in onDraw().
_mWidthDiff = dstRect.Width() - srcRect.Width();
_mHeightDiff = dstRect.Height() - srcRect.Height();
_mCenterXDiff = dstRect.CenterX() - srcRect.CenterX();
_mCenterYDiff = dstRect.CenterY() - srcRect.CenterY();
}
private Path CreateRightEyeCircle(RectF arcBounds, float offsetY)
{
Path path = new Path();
//the center of the right eye
float rightEyeCenterX = arcBounds.CenterX() + mEyeInterval / 2.0f + mEyeCircleRadius;
float rightEyeCenterY = arcBounds.CenterY() + offsetY;
//the bounds of left eye
RectF leftEyeBounds = new RectF(rightEyeCenterX - mEyeCircleRadius, rightEyeCenterY - mEyeCircleRadius, rightEyeCenterX + mEyeCircleRadius, rightEyeCenterY + mEyeCircleRadius);
path.AddArc(leftEyeBounds, 180, -(DEGREE_180 + 15));
//the above radian of of the eye
path.QuadTo(leftEyeBounds.Right - mAboveRadianEyeOffsetX, leftEyeBounds.Top + mEyeCircleRadius * 0.2f, leftEyeBounds.Right - mAboveRadianEyeOffsetX / 4.0f, leftEyeBounds.Top - mEyeCircleRadius * 0.15f);
return(path);
}
protected override void Draw(Canvas canvas, Rect bounds)
{
int saveCount = canvas.Save();
mTempBounds.Set(Bounds);
mTempBounds.Inset(mStrokeInset, mStrokeInset);
canvas.Rotate(mGroupRotation, mTempBounds.CenterX(), mTempBounds.CenterY());
if (mSwipeDegrees != 0)
{
mPaint.Color = new Color(mCurrentColor);
canvas.DrawArc(mTempBounds, mStartDegrees, mSwipeDegrees, false, mPaint);
}
canvas.RestoreToCount(saveCount);
}
protected override void Draw(Canvas canvas, Rect bounds)
{
RectF arcBounds = mTempBounds;
arcBounds.Set(bounds);
arcBounds.Inset(mStrokeInset, mStrokeInset);
mCurrentBounds.Set(arcBounds);
int saveCount = canvas.Save();
//draw circle trim
float startAngle = (mStartTrim + mRotation) * 360;
float endAngle = (mEndTrim + mRotation) * 360;
float sweepAngle = endAngle - startAngle;
if (sweepAngle != 0)
{
mPaint.Color = new Color(mColor);
mPaint.SetStyle(Paint.Style.Stroke);
canvas.DrawArc(arcBounds, startAngle, sweepAngle, false, mPaint);
}
//draw water wave
if (mWaveProgress < 1.0f)
{
var nColor = new Color(mColor);
mPaint.Color = Color.Argb((int)(Color.GetAlphaComponent(mColor) * (1.0f - mWaveProgress)), Color.GetRedComponent(mColor), Color.GetGreenComponent(mColor), Color.GetBlueComponent(mColor));
mPaint.SetStyle(Paint.Style.Stroke);
float radius = Math.Min(arcBounds.Width(), arcBounds.Height()) / 2.0f;
canvas.DrawCircle(arcBounds.CenterX(), arcBounds.CenterY(), radius * (1.0f + mWaveProgress), mPaint);
}
//draw ball bounce
if (mPathMeasure != null)
{
mPaint.Color = new Color(mBallColor);
mPaint.SetStyle(Paint.Style.Fill);
canvas.DrawCircle(mCurrentPosition[0], mCurrentPosition[1], mSkipBallSize * mScale, mPaint);
}
canvas.RestoreToCount(saveCount);
}
protected override void Draw(Canvas canvas, Rect bounds)
{
int saveCount = canvas.Save();
mTempBounds.Set(Bounds);
mTempBounds.Inset(mStrokeInset, mStrokeInset);
canvas.Rotate(mGroupRotation, mTempBounds.CenterX(), mTempBounds.CenterY());
for (int i = 0; i < 3; i++)
{
if (mLevelSwipeDegrees[i] != 0)
{
mPaint.Color = new Color(mLevelColors[i]);
canvas.DrawArc(mTempBounds, mEndDegrees, mLevelSwipeDegrees[i], false, mPaint);
}
}
canvas.RestoreToCount(saveCount);
}
protected override void Draw(Canvas canvas, Rect bounds)
{
int saveCount = canvas.Save();
mTempBounds.Set(Bounds);
mTempBounds.Inset(mStrokeInSet, mStrokeInSet);
canvas.Rotate(mGroupRotation, mTempBounds.CenterX(), mTempBounds.CenterY());
if (mSwipeDegrees != 0)
{
for (int i = 0; i < mColors.Length; i++)
{
mPaint.StrokeWidth = mStrokeWidth / (i + 1);
mPaint.Color = new Color(mColors[i]);
canvas.DrawArc(CreateArcBounds(mTempBounds, i), mStartDegrees + DEGREE_180 * (i % 2), mSwipeDegrees, false, mPaint);
}
}
canvas.RestoreToCount(saveCount);
}
/// <summary>
/// Coordinates are approximate, you have better cooperate with the designer's design draft
/// </summary>
private Path CreateBalloonPath(RectF balloonRect, float progress)
{
Path path = new Path();
path.MoveTo(balloonRect.CenterX(), balloonRect.Bottom);
float progressWidth = balloonRect.Width() * progress;
float progressHeight = balloonRect.Height() * progress;
//draw left half
float leftIncrementX1 = progressWidth * -0.48f;
float leftIncrementY1 = progressHeight * 0.75f;
float leftIncrementX2 = progressWidth * -0.03f;
float leftIncrementY2 = progressHeight * -1.6f;
float leftIncrementX3 = progressWidth * 0.9f;
float leftIncrementY3 = progressHeight * -1.0f;
path.CubicTo(balloonRect.Left + balloonRect.Width() * 0.25f + leftIncrementX1, balloonRect.CenterY() - balloonRect.Height() * 0.4f + leftIncrementY1, balloonRect.Left - balloonRect.Width() * 0.20f + leftIncrementX2, balloonRect.CenterY() + balloonRect.Height() * 1.15f + leftIncrementY2, balloonRect.Left - balloonRect.Width() * 0.4f + leftIncrementX3, balloonRect.Bottom + leftIncrementY3);
// the results of the left final transformation
// path.cubicTo(balloonRect.left - balloonRect.width() * 0.13f, balloonRect.CenterY() + balloonRect.height() * 0.35f,
// balloonRect.left - balloonRect.width() * 0.23f, balloonRect.CenterY() - balloonRect.height() * 0.45f,
// balloonRect.left + balloonRect.width() * 0.5f, balloonRect.bottom － balloonRect.height());
//draw right half
float rightIncrementX1 = progressWidth * 1.51f;
float rightIncrementY1 = progressHeight * -0.05f;
float rightIncrementX2 = progressWidth * 0.03f;
float rightIncrementY2 = progressHeight * 0.5f;
float rightIncrementX3 = 0.0f;
float rightIncrementY3 = 0.0f;
path.CubicTo(balloonRect.Left - balloonRect.Width() * 0.38f + rightIncrementX1, balloonRect.CenterY() - balloonRect.Height() * 0.4f + rightIncrementY1, balloonRect.Left + balloonRect.Width() * 1.1f + rightIncrementX2, balloonRect.CenterY() - balloonRect.Height() * 0.15f + rightIncrementY2, balloonRect.Left + balloonRect.Width() * 0.5f + rightIncrementX3, balloonRect.Bottom + rightIncrementY3);
// the results of the right final transformation
// path.cubicTo(balloonRect.left + balloonRect.width() * 1.23f, balloonRect.CenterY() - balloonRect.height() * 0.45f,
// balloonRect.left + balloonRect.width() * 1.13f, balloonRect.CenterY() + balloonRect.height() * 0.35f,
// balloonRect.left + balloonRect.width() * 0.5f, balloonRect.bottom);
return(path);
}
protected override void Draw(Canvas canvas, Rect bounds)
{
int saveCount = canvas.Save();
RectF arcBounds = mCurrentBounds;
arcBounds.Set(bounds);
//draw draw gas tube
mPaint.Color = new Color(mGasTubeColor);
mPaint.SetStyle(Paint.Style.Stroke);
mPaint.StrokeWidth = mStrokeWidth;
canvas.DrawPath(CreateGasTubePath(mGasTubeBounds), mPaint);
//draw balloon
mPaint.Color = new Color(mBalloonColor);
mPaint.SetStyle(Paint.Style.FillAndStroke);
canvas.DrawPath(CreateBalloonPath(mBalloonBounds, mProgress), mPaint);
//draw progress
mPaint.Color = new Color(mGasTubeColor);
mPaint.TextSize = mTextSize;
mPaint.StrokeWidth = mStrokeWidth / 5.0f;
canvas.DrawText(mProgressText, arcBounds.CenterX() - mProgressBounds.Width() / 2.0f, mGasTubeBounds.CenterY() + mProgressBounds.Height() / 2.0f, mPaint);
//draw cannula
mPaint.Color = new Color(mCannulaColor);
mPaint.SetStyle(Paint.Style.Stroke);
mPaint.StrokeWidth = mStrokeWidth;
canvas.DrawPath(CreateCannulaHeadPath(mCannulaBounds), mPaint);
mPaint.SetStyle(Paint.Style.Fill);
canvas.DrawPath(CreateCannulaBottomPath(mCannulaBounds), mPaint);
//draw pipe body
mPaint.Color = new Color(mPipeBodyColor);
mPaint.SetStyle(Paint.Style.Fill);
canvas.DrawRoundRect(mPipeBodyBounds, mRectCornerRadius, mRectCornerRadius, mPaint);
canvas.RestoreToCount(saveCount);
}
protected override void Draw(Canvas canvas, Rect bounds)
{
int SaveCount = canvas.Save();
RectF arcBounds = mCurrentBounds;
arcBounds.Set(bounds);
//Draw background
canvas.DrawColor(new Color(mCurrentBackgroundColor));
//Draw reveal circle
if (mRevealCircleRadius > 0)
{
mPaint.Color = new Color(mCurrentBackgroundColor == mBackgroundColor ? mBackgroundDeepColor : mBackgroundColor);
canvas.DrawCircle(arcBounds.CenterX(), arcBounds.CenterY(), mRevealCircleRadius, mPaint);
}
//Draw mother oval
mPaint.Color = new Color(mCurrentOvalColor);
int motherSaveCount = canvas.Save();
canvas.Rotate(mRotateDegrees, mMotherPosition[0], mMotherPosition[1]);
canvas.DrawPath(CreateMotherPath(), mPaint);
canvas.DrawPath(CreateLinkPath(), mPaint);
canvas.RestoreToCount(motherSaveCount);
int childSaveCount = canvas.Save();
canvas.Rotate(mRotateDegrees, mChildPosition[0], mChildPosition[1]);
canvas.DrawPath(CreateChildPath(), mPaint);
canvas.RestoreToCount(childSaveCount);
canvas.RestoreToCount(SaveCount);
// canvas.DrawPath(mMotherMovePath, mPaint);
// canvas.DrawPath(mChildMovePath, mPaint);
// canvas.DrawLine(mMotherPosition[0], mMotherPosition[1], mChildPosition[0], mChildPosition[1], mPaint);
}
protected override void Draw(Canvas canvas, Rect bounds)
{
int saveCount = canvas.Save();
mTempBounds.Set(Bounds);
mTempBounds.Inset(mStrokeInset, mStrokeInset);
mTempBounds.Inset(mTempBounds.Width() * (1.0f - mScale) / 2.0f, mTempBounds.Width() * (1.0f - mScale) / 2.0f);
canvas.Rotate(mGroupRotation, mTempBounds.CenterX(), mTempBounds.CenterY());
mPaint.Color = new Color(mColor);
mPaint.Alpha = (int)(MAX_ALPHA * mScale);
mPaint.StrokeWidth = mStrokeWidth * mScale;
if (mSwipeDegrees != 0)
{
for (int i = 0; i < mGearCount; i++)
{
canvas.DrawArc(mTempBounds, mStartDegrees + DEGREE_360 / mGearCount * i, mSwipeDegrees, false, mPaint);
}
}
canvas.RestoreToCount(saveCount);
}
//Configures the neccesary matrix transformation to apply to the textureView
public void configureTransform(int viewWidth, int viewHeight)
{
if (null == Activity || null == previewSize || null == textureView)
return;
int rotation = (int)Activity.WindowManager.DefaultDisplay.Rotation;
var matrix = new Matrix ();
var viewRect = new RectF (0, 0, viewWidth, viewHeight);
var bufferRect = new RectF (0, 0, previewSize.Height, previewSize.Width);
float centerX = viewRect.CenterX();
float centerY = viewRect.CenterY();
if ((int)SurfaceOrientation.Rotation90 == rotation || (int)SurfaceOrientation.Rotation270 == rotation) {
bufferRect.Offset ((centerX - bufferRect.CenterX()), (centerY - bufferRect.CenterY()));
matrix.SetRectToRect (viewRect, bufferRect, Matrix.ScaleToFit.Fill);
float scale = System.Math.Max (
(float)viewHeight / previewSize.Height,
(float)viewHeight / previewSize.Width);
matrix.PostScale (scale, scale, centerX, centerY);
matrix.PostRotate (90 * (rotation - 2), centerX, centerY);
}
textureView.SetTransform (matrix);
}
protected override void OnSizeChanged (int w, int h, int oldW, int oldH)
{
HEIGHT = h;
WIDTH = w;
HALF_WIDTH = (int)Math.Round ((Double)w / 2);
HALF_HEIGHT = (int)(Math.Round ((Double)h / 2));
//int OFFSET = mCenterOval.Width () / 3.0f;
mCenterOval = new RectF ();
//float OFFSET = 140f;
//Change the OFFSET to relative value according to the screen width
float OFFSET = WIDTH / 5;
//mCenterOval.Set (OFFSET, OFFSET, WIDTH - OFFSET, WIDTH - OFFSET);
//move the mCenterOval a little bit up
mCenterOval.Set (OFFSET, OFFSET * (float)0.5, WIDTH - OFFSET, WIDTH - (float)1.5 * OFFSET);
mCx = (int)Math.Round (mCenterOval.CenterX ());
mCy = (int)Math.Round (mCenterOval.CenterY ());
mRadius = (int)Math.Round (mCenterOval.Width () / 2.0f);
mInnerCircleRadius = mRadius - (mPaint.StrokeWidth * 0.9f);
updateCircleCoordinate (mCx, 0);
}
/// <summary>
/// Configures the necessary transformation to mTextureView.
/// This method should be called after the camera preciew size is determined in openCamera, and also the size of mTextureView is fixed
/// </summary>
/// <param name="viewWidth">The width of mTextureView</param>
/// <param name="viewHeight">VThe height of mTextureView</param>
private void ConfigureTransform(int viewWidth, int viewHeight)
{
Activity activity = Activity;
if (mTextureView == null || mPreviewSize == null || activity == null) {
return;
}
SurfaceOrientation rotation = activity.WindowManager.DefaultDisplay.Rotation;
Matrix matrix = new Matrix ();
RectF viewRect = new RectF (0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF (0, 0, mPreviewSize.Width, mPreviewSize.Height);
float centerX = viewRect.CenterX();
float centerY = viewRect.CenterY();
if (rotation == SurfaceOrientation.Rotation90 || rotation == SurfaceOrientation.Rotation270) {
bufferRect.Offset (centerX - bufferRect.CenterX(), centerY - bufferRect.CenterY());
matrix.SetRectToRect (viewRect, bufferRect, Matrix.ScaleToFit.Fill);
float scale = Math.Max ((float)viewHeight / mPreviewSize.Height, (float)viewWidth / mPreviewSize.Width);
matrix.PostScale (scale, scale, centerX, centerY);
matrix.PostRotate (90 * ((int)rotation - 2), centerX, centerY);
}
mTextureView.SetTransform (matrix);
}
public override void OnDraw(Canvas canvas, RectF bounds, float degreeSelected)
{
canvas.DrawRect(bounds,BackgroundPaint);
canvas.DrawText(Text, bounds.CenterX(), bounds.CenterY() - (TextPaint.Descent() + TextPaint.Ascent()) / 2, TextPaint);
}