android.graphics.PointF的实例源码

项目：Farmacias    文件：Scrollerlinearlayoutmanager.java   

@Override
public void smoothScrollToPosition(RecyclerView recyclerView,RecyclerView.State state,int position) {
    //
    LinearSmoothScroller smoothScroller = new LinearSmoothScroller(mContext){
        @Nullable
        @Override
        public PointF computeScrollVectorForPosition(int targetPosition) {
            return Scrollerlinearlayoutmanager.this.computeScrollVectorForPosition
                    (targetPosition);
        }

        //1 pixel -> 0.05 ms
        //1000 pixel -> x=50 ms to go over the height of the screen
        @Override
        protected float calculateSpeedPerPixel(displayMetrics displayMetrics) {
            return 0.05f;
            //return x /displayMetrics.densityDpi;
        }
    };
    smoothScroller.setTargetPosition(position);
    startSmoothScroll(smoothScroller);
}

项目：crumber    文件：CrumbView.java   

/**
 * Creates a path array to be used to draw lines
 *
 * @param points nodes which will be concatenate. Points are relative to the view and values between [0,1]
 * @return float array that can be used on both drawing straight or dotted lines
 */
protected float[] createPathArray(List<PointF> points) {
    float[] pathArray = new float[(points.size() - 1) * 4];
    for (int i = 0; i < points.size() - 1; i++) {
        int index = i * 4;

        PointF from = points.get(i);
        pathArray[index] = translateX(from.x);
        pathArray[index + 1] = translateY(from.y);

        PointF to = points.get(i + 1);
        pathArray[index + 2] = translateX(to.x);
        pathArray[index + 3] = translateY(to.y);
    }
    return pathArray;
}

项目：event-me    文件：TouchImageView.java   

DoubleTapZoom(float targetZoom,float focusX,float focusY,boolean stretchImagetoSuper) {
    setState(State.ANIMATE_ZOOM);
    startTime = System.currentTimeMillis();
    this.startZoom = normalizedScale;
    this.targetZoom = targetZoom;
    this.stretchImagetoSuper = stretchImagetoSuper;
    PointF bitmapPoint = transformCoordTouchToBitmap(focusX,focusY,false);
    this.bitmapX = bitmapPoint.x;
    this.bitmapY = bitmapPoint.y;

    //
    // Used for translating image during scaling
    //
    startTouch = transformCoordBitmapToTouch(bitmapX,bitmapY);
    endTouch = new PointF(viewWidth / 2,viewHeight / 2);
}

项目：Android-CoolMenu    文件：DragValueAnimator.java   

private long getDragAnimaDuration(Object... pointFs) {

        float x = ((PointF) pointFs[0]).x - ((PointF) pointFs[pointFs.length - 1]).x;
        float y = ((PointF) pointFs[0]).y - ((PointF) pointFs[pointFs.length - 1]).y;
        long duration = (long) (Math.hypot(x,y) * 1.6F);

        //关于这个比例自己调吧
        if (duration == 0) {
            return mDragAnimaDuration;
        } else if (duration > 0 && duration <= MIN_DURATION) {
            return MIN_DURATION;
        } else if (duration > MIN_DURATION && duration <= MAX_DURATION) {
            return duration;
        }
        return MAX_DURATION;
    }

项目：LueansRead    文件：TouchImageView.java   

/**
 * This function will transform the coordinates in the touch event to the coordinate
 * system of the drawable that the imageview contain
 * @param x x-coordinate of touch event
 * @param y y-coordinate of touch event
 * @param clipToBitmap Touch event may occur within view,but outside image content. True,to clip return value
 *          to the bounds of the bitmap size.
 * @return Coordinates of the point touched,in the coordinate system of the original drawable.
 */
private PointF transformCoordTouchToBitmap(float x,float y,boolean clipToBitmap) {
    matrix.getValues(m);
    float origW = getDrawable().getIntrinsicWidth();
    float origH = getDrawable().getIntrinsicHeight();
    float transX = m[Matrix.MTRANS_X];
    float transY = m[Matrix.MTRANS_Y];
    float finalX = ((x - transX) * origW) / getimageWidth();
    float finalY = ((y - transY) * origH) / getimageHeight();

    if (clipToBitmap) {
        finalX = Math.min(Math.max(finalX,0),origW);
        finalY = Math.min(Math.max(finalY,origH);
    }

    return new PointF(finalX,finalY);
}

项目：HDImageView    文件：HDImageView.java   

private void setFilingGesture(Context context) {
    mFlingDetector = new GestureDetector(context,new GestureDetector.SimpleOnGestureListener(){
        @Override
        public boolean onFling(MotionEvent e1,MotionEvent e2,float veLocityX,float veLocityY) {

            if (mTranslateEnabled && mReadySent && mViewTranslate != null && e1 != null && e2 != null
                    && (Math.abs(e1.getX() - e2.getX()) > 50 || Math.abs(e1.getY() - e2.getY()) > 50)
                    && (Math.abs(veLocityX) > 500 || Math.abs(veLocityY) > 500) && !mIsZooming) {
                PointF vTranslateEnd =
                        new PointF(mViewTranslate.x + (veLocityX * 0.25f),mViewTranslate.y + (veLocityY * 0.25f));
                float sCenterXEnd = ((getWidth() / 2.0F) - vTranslateEnd.x) / mScale;
                float sCenterYEnd = ((getHeight() / 2.0F) - vTranslateEnd.y) / mScale;
                startFilingAnimation(sCenterXEnd,sCenterYEnd);
                if (BuildConfig.DEBUG) Log.d(TAG,"onFling: 正在滑行");
                return true;
            }
            return false;
        }
    });
}

项目：Sega    文件：TouchImageView.java   

/**
 * This function will transform the coordinates in the touch event to the coordinate
 * system of the drawable that the imageview contain
 *
 * @param x            x-coordinate of touch event
 * @param y            y-coordinate of touch event
 * @param clipToBitmap Touch event may occur within view,to clip return value
 *                     to the bounds of the bitmap size.
 * @return Coordinates of the point touched,finalY);
}

项目：boohee_v5.6    文件：RadarView.java   

public RadarView(Context context,AttributeSet attrs) {
    super(context,attrs);
    this.BACKGROUND_COLOR = new int[]{-3283459,-2692611,-1641730,-853763,-1};
    this.FILL_COLOR = new int[]{-14581016,-15501602,-13858067,-12477447,-13397517};
    this.stroke_COLOR = -3417355;
    this.CIRCLE_NUMBER = this.BACKGROUND_COLOR.length;
    this.LINE_NUMBER = this.FILL_COLOR.length;
    this.DEFAULT_DURATION = 1000;
    this.stroke_WIDTH = 1;
    this.START_ANGLE = -90;
    this.MIN_RADIUS = 36.0f;
    this.points = new PointF[this.LINE_NUMBER];
    this.centerPoints = new PointF[this.LINE_NUMBER];
    this.percent = new float[]{0.0f,0.0f,0.0f};
    this.target = new float[]{0.0f,0.0f};
    init(context);
}

项目：spruce-android    文件：LinearSort.java   

@Override
public double getdistanceBetweenPoints(PointF left,PointF right) {
    switch (direction) {
        case BottOM_TO_TOP:
        case TOP_TO_BottOM:
            left.x = 0F;
            right.x = 0F;
            break;
        case LEFT_TO_RIGHT:
        case RIGHT_TO_LEFT:
            left.y = 0F;
            right.y = 0F;
            break;
    }
    return Utils.euclideandistance(left,right);
}

项目：XERUNG    文件：CheckBox.java   

@SuppressWarnings("deprecation")
public void init(AttributeSet attrs,int defStyleAttr) {
       if (isInEditMode())
           return;

       TypedArray a = getContext().obtainStyledAttributes(attrs,R.styleable.CheckBox,defStyleAttr,0);

       drawable = new CheckableDrawable(getContext(),R.raw.carbon_checkBox_checked,R.raw.carbon_checkBox_unchecked,R.raw.carbon_checkBox_filled,new PointF(-0.09f,0.11f));
       setButtonDrawable(getResources().getDrawable(android.R.color.transparent));
       setCompoundDrawablesWithIntrinsicBounds(drawable,null,null);

       ColorStateList csl = a.getColorStateList(R.styleable.CheckBox_carbon_checkColor);
       if (csl != null)
           drawable.setColor(csl);

       setCheckedImmediate(isChecked());

       a.recycle();
   }

项目：JueDiQiuSheng    文件：DayNightLoadingRenderer.java   

private void initStarHolders(RectF currentBounds) {
    mStarHolders.add(new StarHolder(0.3f,new PointF(currentBounds.left + currentBounds.width() * 0.175f,currentBounds.top + currentBounds.height() * 0.0934f)));
    mStarHolders.add(new StarHolder(0.2f,currentBounds.top + currentBounds.height() * 0.62f)));
    mStarHolders.add(new StarHolder(0.2f,new PointF(currentBounds.left + currentBounds.width() * 0.2525f,currentBounds.top + currentBounds.height() * 0.43f)));
    mStarHolders.add(new StarHolder(0.5f,new PointF(currentBounds.left + currentBounds.width() * 0.4075f,currentBounds.top + currentBounds.height() * 0.0934f)));
    mStarHolders.add(new StarHolder(new PointF(currentBounds.left + currentBounds.width() * 0.825f,currentBounds.top + currentBounds.height() * 0.04f)));
    mStarHolders.add(new StarHolder(new PointF(currentBounds.left + currentBounds.width() * 0.7075f,currentBounds.top + currentBounds.height() * 0.147f)));
    mStarHolders.add(new StarHolder(new PointF(currentBounds.left + currentBounds.width() * 0.3475f,currentBounds.top + currentBounds.height() * 0.2567f)));
    mStarHolders.add(new StarHolder(0.6f,new PointF(currentBounds.left + currentBounds.width() * 0.5825f,currentBounds.top + currentBounds.height() * 0.277f)));
    mStarHolders.add(new StarHolder(new PointF(currentBounds.left + currentBounds.width() * 0.84f,currentBounds.top + currentBounds.height() * 0.32f)));
    mStarHolders.add(new StarHolder(new PointF(currentBounds.left + currentBounds.width() * 0.8f,currentBounds.top + currentBounds.height() / 0.502f)));
    mStarHolders.add(new StarHolder(0.6f,new PointF(currentBounds.left + currentBounds.width() * 0.7f,currentBounds.top + currentBounds.height() * 0.473f)));

    mMaxSTaroffsets = currentBounds.height();
}

项目：ucar-weex-core    文件：BorderCornerTest.java   

@Test
public void testGetSharpCornerEnd() throws Exception {
  PointF topLeft = createBorderCorner(TOP_LEFT,10,50,borderBox)
      .getSharpCornerEnd();
  assertthat(topLeft.x,is(5f));
  assertthat(topLeft.y,is(0f));
  PointF topRight = createBorderCorner(TOP_RIGHT,borderBox)
      .getSharpCornerEnd();
  assertthat(topRight.x,is(400f));
  assertthat(topRight.y,is(5f));
  PointF bottomright = createBorderCorner(BottOM_RIGHT,borderBox)
      .getSharpCornerEnd();
  assertthat(bottomright.x,is(395f));
  assertthat(bottomright.y,is(400f));
  PointF bottomLeft = createBorderCorner(BottOM_LEFT,borderBox)
      .getSharpCornerEnd();
  assertthat(bottomLeft.x,is(0f));
  assertthat(bottomLeft.y,is(395f));
}

项目：SpriteKit-Android    文件：MainActivity.java   

private void shuffleCoinPosition() {
    Random rand = new Random();
    for (Sprite whiteSprite:coinsprites) {
        float whiteDx = rand.nextInt(20)-10;
        float whiteDy = rand.nextInt(20)-10;
        float whiteX = whiteSprite.getPosition().x + whiteDx;
        float whiteY = whiteSprite.getPosition().y + whiteDy;
        if (whiteX > 800 || whiteX < 100 || whiteY > 800 || whiteY < 100){
            whiteY = rand.nextInt(800)+100;
            whiteX = rand.nextInt(800)+100;
        }
        whiteSprite.setPosition(new PointF(whiteX,whiteY));
    }

    new Timer().schedule(new TimerTask() {
        @Override
        public void run() {
            shuffleCoinPosition();
        }
    },500);

}

项目：BLE-Indoor-Positioning    文件：BeaconMap.java   

protected void drawBeaconBackground(Canvas canvas,Beacon beacon,PointF beaconCenter) {
    float advertisingRadius = (float) canvasProjection.getCanvasUnitsFromMeters(beacon.getEstimatedAdvertisingRange());

    Paint innerBeaconRangePaint = new Paint(beaconRangePaint);
    innerBeaconRangePaint.setAlpha(100);
    Shader rangeShader = new RadialGradient(
            beaconCenter.x,beaconCenter.y,advertisingRadius - (pixelsPerDip * 0),primaryFillPaint.getColor(),beaconRangePaint.getColor(),Shader.TileMode.MIRROR);

    innerBeaconRangePaint.setShader(rangeShader);
    //canvas.drawCircle(beaconCenter.x,advertisingRadius,innerBeaconRangePaint);
    canvas.drawCircle(beaconCenter.x,beaconRangePaint);
}

项目：Rxjava2.0Demo    文件：ScrollBoundaryUtil.java   

public static boolean canLoadmore(View targetView,MotionEvent event) {
    if (!canScrollDown(targetView) && canScrollUp(targetView) && targetView.getVisibility() == View.VISIBLE) {
        return true;
    }
    if (targetView instanceof ViewGroup && event != null) {
        ViewGroup viewGroup = (ViewGroup) targetView;
        final int childCount = viewGroup.getChildCount();
        PointF point = new PointF();
        for (int i = 0; i < childCount; i++) {
            View child = viewGroup.getChildAt(i);
            if (isTransformedTouchPointInView(viewGroup,child,event.getX(),event.getY(),point)) {
                event = MotionEvent.obtain(event);
                event.offsetLocation(point.x,point.y);
                return canLoadmore(child,event);
            }
        }
    }
    return false;
}

项目：spruce-android    文件：CorneredSort.java   

@Override
public List<SpruceTimedView> getViewListWithTimeOffsets(ViewGroup parent,List<View> children) {
    final PointF comparisonPoint = getdistancePoint(parent,children);
    List<SpruceTimedView> timedViews = new ArrayList<>();
    long currentTimeOffset = 0;

    double lastdistance = 0;
    for (View view : children) {
        double viewdistance = getdistanceBetweenPoints(Utils.viewToPoint(view),comparisonPoint);
        if (Math.floor(lastdistance) != Math.floor(viewdistance)) {
            lastdistance = viewdistance;
            currentTimeOffset += interObjectDelay;
        }
        timedViews.add(new SpruceTimedView(view,currentTimeOffset));
    }

    return timedViews;
}

项目：geometric-progress-view    文件：GeometricProgressView.java   

private void initializefigures() {
    if (!isInEditMode()) cancelAnimation();
    int size = Math.min(width,height);

    double circumference = numberOfAngles * figurePadding;
    double distanceFromCenter = circumference / (Math.PI * 2);
    int radius = size / 2 - (int) (distanceFromCenter);
    double startAngle = 90 + (360.0 / numberOfAngles) / 2;
    List<PointF> angles = new ArrayList<>();
    for (int i = 0; i < numberOfAngles; i++) {
        double angle = startAngle + i * (360.0 / numberOfAngles);
        angles.add(new PointF(
                (float) (center.x + radius * Math.cos(Math.toradians(angle))),(float) (center.y + radius * Math.sin(Math.toradians(angle))))
        );
    }

    figures = new ArrayList<>();
    if (TYPE.KITE.equals(type)) {
        buildfiguresUsingKites(angles,startAngle,distanceFromCenter);
    } else {
        buildfiguresUsingTriangles(angles,distanceFromCenter);
    }
    setupAnimation();
}

项目：CoordinateAxisChart    文件：CoordinateAxisChart.java   

/**
 * generate the power function lines
 * @param a {@link PowerType#PowerType(float,float,float)}
 * @param b {@link PowerType#PowerType(float,float)}
 * @param canvas canvas
 */
private void generatePowerLines(Float a,Float b,Float c,Canvas canvas){
    // raw
    PointF start = leftPoint;
    PointF end = rightPoint;

    float unit = (end.x - start.x) / xPointsValues.length;

    for (int i = 0; i < xPointsValues.length; i++) {
        // get the split point
        PointF split = new PointF(start.x + i * unit,start.y);
        // logical
        PointF splitLogic = convertRawPoint2Logical(split,unitLength);
        // calculate
        splitLogic.y = FuncUtils.getPowYValue(a,b,c,splitLogic.x);
        // convert logical to raw
        PointF splitRaw = convertLogicalPoint2Raw(splitLogic,unitLength);
        xPointsValues[i] = splitRaw;
    }

    drawBezier(canvas,FuncType.POWER_TYPE);

}

项目：FilterPlayer    文件：GPUImageFilter.java   

protected void setPoint(final int location,final PointF point) {
    runOnDraw(new Runnable() {

        @Override
        public void run() {
            float[] vec2 = new float[2];
            vec2[0] = point.x;
            vec2[1] = point.y;
            GLES20.gluniform2fv(location,1,vec2,0);
        }
    });
}

项目：simpledialogFragments    文件：ColorWheelView.java   

void setGeometry(PointF center,float radius,float padding){
    if (!mCenter.equals(center) || radius != mRadius || padding != mPadding){
        geometryNeedsUpdate = true;
    }
    mCenter = center;
    mRadius = radius;
    mPadding = padding;
}

项目：SmartRefreshLayout    文件：StoreHouseBarItem.java   

public StoreHouseBarItem(int index,PointF start,PointF end,int color,int linewidth) {
    this.index = index;

    midPoint = new PointF((start.x + end.x) / 2,(start.y + end.y) / 2);

    mCStartPoint = new PointF(start.x - midPoint.x,start.y - midPoint.y);
    mCEndPoint = new PointF(end.x - midPoint.x,end.y - midPoint.y);

    setColor(color);
    setlinewidth(linewidth);
    mPaint.setAntiAlias(true);
    mPaint.setStyle(Paint.Style.stroke);
}

项目：BlogBookApp    文件：ZoomImageView.java   

/**
 * Return the point at the center of the zoomed image. The PointF coordinates range
 * in value between 0 and 1 and the focus point is denoted as a fraction from the left
 * and top of the view. For example,the top left corner of the image would be (0,0).
 * And the bottom right corner would be (1,1).
 *
 * @return PointF representing the scroll position of the zoomed image.
 */
public PointF getScrollPosition() {
    Drawable drawable = getDrawable();
    if (drawable == null) {
        return null;
    }
    int drawableWidth = drawable.getIntrinsicWidth();
    int drawableHeight = drawable.getIntrinsicHeight();

    PointF point = transformCoordTouchToBitmap(viewWidth / 2,viewHeight / 2,true);
    point.x /= drawableWidth;
    point.y /= drawableHeight;
    return point;
}

项目：JueDiQiuSheng    文件：DayNightLoadingRenderer.java   

public StarHolder(float flashOffset,PointF mPoint) {
    this.mAlpha = MAX_ALPHA;
    this.mCurrentPoint = new PointF();
    this.mPoint = mPoint;
    this.mFlashOffset = flashOffset;
    this.mInterpolator = INTERPOLATORS[mRandom.nextInt(INTERPOLATORS.length)];
}

项目：361Camera    文件：CameraUtil.java   

public static PointF normalizedSensorCoordsFornormalizeddisplayCoords(
        float nx,float ny,int sensorOrientation) {
    switch (sensorOrientation) {
        case 0:
            return new PointF(nx,ny);
        case 90:
            return new PointF(ny,1.0f - nx);
        case 180:
            return new PointF(1.0f - nx,1.0f - ny);
        case 270:
            return new PointF(1.0f - ny,nx);
        default:
            return null;
    }
}

项目：GitHub    文件：ElectricFanLoadingRenderer.java   

@Override
public void onAnimationUpdate(ValueAnimator animation) {
    PointF point = (PointF) animation.getAnimatedValue();
    target.mLeafRect.set((int) point.x,(int) point.y,(int) (point.x + mLeafdrawable.getIntrinsicWidth()),(int) (point.y + mLeafdrawable.getIntrinsicHeight()));
    target.mLeafRotation = target.mMaxRotation * animation.getAnimatedFraction();
}

项目：ImageEraser    文件：TouchImageView.java   

public TouchImageView(Context context) {
    super(context);
    this.isPaningOn = false;
    this.userTouchListener = null;
    this.last = new PointF();
    sharedConstructing(context);
}

项目：event-me    文件：TouchImageView.java   

/**
 * Interpolate between where the image should start and end in order to translate
 * the image so that the point that is touched is what ends up centered at the end
 * of the zoom.
 * @param t
 */
private void translateImagetoCenterTouchPosition(float t) {
    float targetX = startTouch.x + t * (endTouch.x - startTouch.x);
    float targetY = startTouch.y + t * (endTouch.y - startTouch.y);
    PointF curr = transformCoordBitmapToTouch(bitmapX,bitmapY);
    matrix.postTranslate(targetX - curr.x,targetY - curr.y);
}

项目：Mire    文件：DepthRendrer.java   

void drawShadow(PointF point1,PointF point2,float correctionValue,Canvas canvas,DepthLayout dl) {
    float angle = Math.abs(Math.abs(getAngle(point1,point2)) + correctionValue);
    float alpha = angle / 180f;
    shadowPaint.setAlpha((int) (alpha * 255f * shadowAlpha));

    canvas.drawRect(0,dl.getWidth(),dl.getHeight(),shadowPaint);
}

项目：XERUNG    文件：CheckableDrawable.java   

public CheckableDrawable(Context context,int checkedRes,int uncheckedRes,int filledRes,PointF offset) {
    this.context = context;
    this.checkedRes = checkedRes;
    this.uncheckedRes = uncheckedRes;
    this.filledRes = filledRes;
    this.offset = offset;

    maskPaint.setAlpha(255);
    maskPaint.setColor(0xffffffff);
}

项目：LeftIndicatorViewGroup    文件：LeftIndicatorViewGroup.java   

/**
 * genearate samll points.
 *
 * @param bigStart prev big circle position.
 * @param current  current big circle position.
 */
private void generateSmallPoints(float bigStart,float current) {
    // location start.
    float smallStart = bigStart + mHalfBigHeight;
    // location end.
    float smallEnd = current - mHalfBigHeight;
    float smallHeight = mHalfSmallHeight * 2 + mSmalldistance * 2;
    // if has space.
    if (smallEnd - smallStart < smallHeight) {
        return;
    }
    // half of top points.
    float halfTop = (bigStart + current) / 2 - mHalfSmallHeight - mSmalldistance;
    while (halfTop - smallStart >= smallHeight) {
        mSmallIndicatorPoints.add(new PointF(getIndicatorXPointF(),halfTop - smallHeight / 2));
        halfTop -= smallHeight;
    }
    // does need extra.
    if (halfTop - smallStart >= smallHeight - mSmalldistance + mBigAndSmallOffset) {
        mSmallIndicatorPoints.add(new PointF(getIndicatorXPointF(),halfTop - smallHeight / 2));
    }

    // center.
    mSmallIndicatorPoints.add(new PointF(getIndicatorXPointF(),(bigStart + current) / 2));
    // half bottom points.
    float halfBottom = (bigStart + current) / 2 + mHalfSmallHeight + mSmalldistance;
    while (halfBottom + smallHeight <= smallEnd) {
        mSmallIndicatorPoints.add(new PointF(getIndicatorXPointF(),halfBottom + smallHeight / 2));
        halfBottom += smallHeight;
    }
    // does need extra.
    if (halfBottom + smallHeight - mSmalldistance + mBigAndSmallOffset <= smallEnd) {
        mSmallIndicatorPoints.add(new PointF(getIndicatorXPointF(),halfBottom + smallHeight / 2));
    }
}

项目：Cable-Android    文件：MoveGestureDetector.java   

/**
 * Determine (multi)finger focal point (a.k.a. center point between all
 * fingers)
 *
 * @return PointF focal point
 */
private PointF determineFocalPoint(MotionEvent e) {
    // Number of fingers on screen
    final int pCount = e.getPointerCount();
    float x = 0f;
    float y = 0f;

    for (int i = 0; i < pCount; i++) {
        x += e.getX(i);
        y += e.getY(i);
    }

    return new PointF(x / pCount,y / pCount);
}

项目：LaunchEnr    文件：FlingToDeleteHelper.java   

Runnable getFlingAnimation(DropTarget.DragObject dragObject) {
    PointF vel = isFlingingToDelete();
    if (vel == null) {
        return null;
    }
    return new FlingAnimation(dragObject,vel,mDropTarget,mLauncher);
}

项目：GitHub    文件：Ease.java   

private void init(float startX,float startY,float endX,float endY) {
    PointF start = new PointF(startX,startY);
    PointF end = new PointF(endX,endY);
    c.x = 3 * start.x;
    b.x = 3 * (end.x - start.x) - c.x;
    a.x = 1 - c.x - b.x;
    c.y = 3 * start.y;
    b.y = 3 * (end.y - start.y) - c.y;
    a.y = 1 - c.y - b.y;
}

项目：spline    文件：Layer.java   

/**
 * Convenience methods for the control points of the layer's bounding Box
 */

public PointF getTopLeft() {
    topLeft.x = getLeft();
    topLeft.y = getTop();
    return topLeft;
}

项目：PhotoPicker-master    文件：TouchImageView.java   

/**
 * Return a Rect representing the zoomed image.
 *
 * @return rect representing zoomed image
 */
public RectF getZoomedRect() {
  if (mScaleType == ScaleType.FIT_XY) {
    throw new UnsupportedOperationException("getZoomedRect() not supported with FIT_XY");
  }
  PointF topLeft = transformCoordTouchToBitmap(0,true);
  PointF bottomright = transformCoordTouchToBitmap(viewWidth,viewHeight,true);

  float w = getDrawable().getIntrinsicWidth();
  float h = getDrawable().getIntrinsicHeight();
  return new RectF(topLeft.x / w,topLeft.y / h,bottomright.x / w,bottomright.y / h);
}

项目：GitHub    文件：ScaleCircleNavigator.java   

@Override
protected void onDraw(Canvas canvas) {
    for (int i = 0,j = mCirclePoints.size(); i < j; i++) {
        PointF point = mCirclePoints.get(i);
        float radius = mCircleRadiusArray.get(i,(float) mMinRadius);
        mPaint.setColor(ArgbEvaluatorHolder.eval((radius - mMinRadius) / (mMaxRadius - mMinRadius),mnormalCircleColor,mSelectedCircleColor));
        canvas.drawCircle(point.x,getHeight() / 2.0f,radius,mPaint);
    }
}

项目：AndroidbackendlessChat    文件：TouchImageView.java   

/**
 * Inverse of transformCoordTouchToBitmap. This function will transform the coordinates in the
 * drawable's coordinate system to the view's coordinate system.
 * @param bx x-coordinate in original bitmap coordinate system
 * @param by y-coordinate in original bitmap coordinate system
 * @return Coordinates of the point in the view's coordinate system.
 */
private PointF transformCoordBitmapToTouch(float bx,float by) {
    matrix.getValues(m);        
    float origW = getDrawable().getIntrinsicWidth();
    float origH = getDrawable().getIntrinsicHeight();
    float px = bx / origW;
    float py = by / origH;
    float finalX = m[Matrix.MTRANS_X] + getimageWidth() * px;
    float finalY = m[Matrix.MTRANS_Y] + getimageHeight() * py;
    return new PointF(finalX,finalY);
}

项目：PeSanKita-android    文件：MotionEntity.java   

public PointF absoluteCenter() {
  float topLeftX = layer.getX() * canvasWidth;
  float topLeftY = layer.getY() * canvasHeight;

  float centerX = topLeftX + getWidth() * holyScale * 0.5F;
  float centerY = topLeftY + getHeight() * holyScale * 0.5F;

  return new PointF(centerX,centerY);
}

项目：Fatigue-Detection    文件：DrawMultiTriangleNet.java   

PointF a(float paramFloat1,float paramFloat2,float[] paramArrayOfFloat)
{
    PointF localPointF = new PointF();
    localPointF.x = (paramArrayOfFloat[0] * paramFloat1 + paramArrayOfFloat[1] * paramFloat2 + paramArrayOfFloat[2]);
    localPointF.y = (paramArrayOfFloat[3] * paramFloat1 + paramArrayOfFloat[4] * paramFloat2 + paramArrayOfFloat[5]);
    return localPointF;
}

项目：HDImageView    文件：HDImageView.java   

private PointF getTranslateForSourceCenter(float sourceCenterX,float sourceCenterY,float scale){
    int vxCenter = (getPaddingLeft() + getWidth() - getPaddingRight())/2;
    int vyCenter = (getPaddingTop() + getHeight() - getPaddingBottom())/2;
    mSatTemp.mScale = scale;
    mSatTemp.mViewTranslate.set(vxCenter - sourceCenterX*scale,vyCenter-sourceCenterY*scale);
    fitToBounds(true,mSatTemp);
    return mSatTemp.mViewTranslate;
}