private float computeMaximum(float[] offsets)
{
float max = (1.0F / -1.0F);
foreach (var o in offsets)
{
max = Math.Max(o, max);
}
return(max);
}
protected override void onPullImpl(float scaleOfLayout)
{
float angle;
if (mRotateDrawableWhilePulling)
{
angle = scaleOfLayout * 90f;
}
else
{
angle = Math.Max(0f, Math.Min(180f, scaleOfLayout * 360f - 180f));
}
mHeaderImageMatrix.SetRotate(angle, mRotationPivotX, mRotationPivotY);
mHeaderImage.ImageMatrix = mHeaderImageMatrix;
}
public override void OnChildDraw(Canvas c, RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, float dX,
float dY, int actionState, bool isCurrentlyActive)
{
var measuredsize = GetMeasuredSize(GetContainerArea(dX), viewHolder);
if (measuredsize.width <= 0 || measuredsize.height <= 0)
{
return;
}
var clippedX = dX >= 0 ? Math.Min(dX, measuredsize.width) : Math.Max(dX, -measuredsize.width);
if (actionState == ItemTouchHelper.ActionStateSwipe)
{
if (_currentSwipeState != SwipeState.Default)
{
if (_currentSwipeState == SwipeState.LeftOpen)
{
clippedX = Math.Max(clippedX, measuredsize.width);
}
if (_currentSwipeState == SwipeState.RightOpen)
{
clippedX = Math.Min(clippedX, -measuredsize.width);
}
base.OnChildDraw(c, recyclerView, viewHolder, clippedX, dY, actionState, isCurrentlyActive);
}
else
{
SetTouchListener(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
}
}
if (_currentSwipeState == SwipeState.Default)
{
base.OnChildDraw(c, recyclerView, viewHolder, clippedX, dY, actionState, isCurrentlyActive);
}
DrawButtons(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive, _currentSwipeState, false);
}
// Expand the FAB so that it takes up the whole screen.
// The argument viewContentToDisplay will be displayed as content.
// The view is automatically hidden when the user clicks back.
public void ExpandFabToOverlayView(View viewContentToDisplay)
{
Activity.Window.AddFlags(WindowManagerFlags.Fullscreen);
var fabOverlayView = Activity.FindViewById <ViewGroup>(Resource.Id.fab_overlay_content);
fabOverlayView.RemoveAllViews();
fabOverlayView.SetBackgroundColor(Activity.Fab.FabColor);
fabOverlayView.Visibility = ViewStates.Visible;
fabOverlayView.AddView(viewContentToDisplay);
var cx = (Activity.Fab.Left + Activity.Fab.Right) / 2;
var cy = (Activity.Fab.Top + Activity.Fab.Bottom) / 2;
var finalRadius = Math.Max(fabOverlayView.Width, fabOverlayView.Height) * 1.5;
var anim = XamarinViewAnimationUtils.CreateCircularReveal(fabOverlayView, cx, cy, 0, (float)finalRadius);
anim.SetInterpolator(new AccelerateDecelerateInterpolator());
anim.SetDuration(750);
anim.Start();
}
public void onProjectionChanged(HeadMountedDisplay hmd, EyeParams leftEye, EyeParams rightEye, float zNear, float zFar)
{
mHmd = new HeadMountedDisplay(hmd);
mLeftEyeFov = new FieldOfView(leftEye.getFov());
mRightEyeFov = new FieldOfView(rightEye.getFov());
ScreenParams screen = mHmd.getScreen();
CardboardDeviceParams cdp = mHmd.getCardboard();
if (mProgramHolder == null)
{
mProgramHolder = createProgramHolder();
}
EyeViewport leftEyeViewport = initViewportForEye(leftEye, 0.0F);
EyeViewport rightEyeViewport = initViewportForEye(rightEye, leftEyeViewport.width);
leftEye.getFov().toPerspectiveMatrix(zNear, zFar, leftEye.getTransform().GetPerspective(), 0);
rightEye.getFov().toPerspectiveMatrix(zNear, zFar, rightEye.getTransform().GetPerspective(), 0);
float textureWidthM = leftEyeViewport.width + rightEyeViewport.width;
float textureHeightM = Math.Max(leftEyeViewport.height, rightEyeViewport.height);
float xPxPerM = screen.getWidth() / screen.getWidthMeters();
float yPxPerM = screen.getHeight() / screen.getHeightMeters();
int textureWidthPx = Math.Round(textureWidthM * xPxPerM);
int textureHeightPx = Math.Round(textureHeightM * yPxPerM);
float xEyeOffsetMScreen = screen.getWidthMeters() / 2.0F - cdp.getInterpupillaryDistance() / 2.0F;
float yEyeOffsetMScreen = cdp.getVerticalDistanceToLensCenter() - screen.getBorderSizeMeters();
mLeftEyeDistortionMesh = createDistortionMesh(leftEye, leftEyeViewport, textureWidthM, textureHeightM, xEyeOffsetMScreen, yEyeOffsetMScreen);
xEyeOffsetMScreen = screen.getWidthMeters() - xEyeOffsetMScreen;
mRightEyeDistortionMesh = createDistortionMesh(rightEye, rightEyeViewport, textureWidthM, textureHeightM, xEyeOffsetMScreen, yEyeOffsetMScreen);
setupRenderTextureAndRenderbuffer(textureWidthPx, textureHeightPx);
}
private static float clamp(float val, float min, float max)
{
return(Math.Max(min, Math.Min(max, val)));
}
