private void AngleBgImg_PointerPressed(object sender, PointerRoutedEventArgs e)
{
_angleImgPressing = true;
Point currentLocation = e.GetCurrentPoint(AngleGrid).Position;
double dx = currentLocation.X - AngleImgCenter.X;
double dy = currentLocation.Y - AngleImgCenter.Y;
double hue = Math2.ComputeH(dx, dy);
AngleStoryboardStart(hue);
}
private void AngleBgImg_PointerMoved(object sender, Windows.UI.Xaml.Input.PointerRoutedEventArgs e)
{
Point currentLocation = e.GetCurrentPoint(AngleGrid).Position;
if (_angleImgPressing)
{
double dx = currentLocation.X - AngleImgCenter.X;
double dy = currentLocation.Y - AngleImgCenter.Y;
double hue = Math2.ComputeH(dx, dy);
AngleIcImgRotation.Angle = hue;
}
}
private void Circle_PointerPressed(object sender, PointerRoutedEventArgs e)
{
Point currentLocation = e.GetCurrentPoint(RingGrid).Position;
RingGrid.CapturePointer(e.Pointer);
PointerEventHandler moved = null;
moved = (s, args) =>
{
currentLocation = e.GetCurrentPoint(RingGrid).Position;
double dx = currentLocation.X - colorRingCenter.X;
double dy = currentLocation.Y - colorRingCenter.Y;
//---
double hue = Math2.ComputeH(dx, dy);
//---
Hue = Math2.ComputeH(dx, dy);
CurrentColor = Math2.HSVToRGB(Hue, Saturation, Value);
CompositeTransform ct = SeletcedColorEllipseCompositeTransform;
Point targetPoint = new Point(ct.TranslateX, ct.TranslateY);
ColorPickerStoryboardStart(Hue, targetPoint);
SelectedColorShowArea.Fill = new SolidColorBrush(CurrentColor);
};
PointerEventHandler released = null;
released = (s, args) =>
{
double dx = currentLocation.X - colorRingCenter.X;
double dy = currentLocation.Y - colorRingCenter.Y;
//---
double hue = Math2.ComputeH(dx, dy);
//---
Hue = Math2.ComputeH(dx, dy);
CurrentColor = Math2.HSVToRGB(Hue, Saturation, Value);
CompositeTransform ct = SeletcedColorEllipseCompositeTransform;
Point targetPoint = new Point(ct.TranslateX, ct.TranslateY);
ColorPickerStoryboardStart(Hue, targetPoint);
SelectedColorShowArea.Fill = new SolidColorBrush(CurrentColor);
RingGrid.PointerMoved -= moved;
RingGrid.PointerReleased -= released;
};
RingGrid.PointerMoved += moved;
RingGrid.PointerReleased += released;
}
private unsafe void ChangeColorRingColorPixel()
{
using (BitmapBuffer buffer = colorRingSoftwareBitmap.LockBuffer(BitmapBufferAccessMode.Write))
{
using (var reference = buffer.CreateReference())
{
byte *dataInBytes;
uint capacity;
((IMemoryBufferByteAccess)reference).GetBuffer(out dataInBytes, out capacity);
// Fill-in the BGRA plane
BitmapPlaneDescription bufferLayout = buffer.GetPlaneDescription(0);
double imgWidth = bufferLayout.Width;
double imgHeight = bufferLayout.Height;
double imgCenterW = bufferLayout.Width / 2;
double imgCenterH = bufferLayout.Height / 2;
for (int row = 0; row < imgHeight; row++)
{
for (int col = 0; col < imgWidth; col++)
{
double dx = col - imgCenterW;
double dy = row - imgCenterH;
double hue = Math2.ComputeH(dx, dy);
HSVColor hsv = new HSVColor(hue, 1.0, 1.0);
Color color = hsv.GetRGB();
int pixelIndex = bufferLayout.Stride * row + 4 * col;
if (dataInBytes[pixelIndex + 3] != 0)
{
dataInBytes[pixelIndex + 0] = (byte)color.B;
dataInBytes[pixelIndex + 1] = (byte)color.G;
dataInBytes[pixelIndex + 2] = (byte)color.R;
}
}
}
}
}
}