public static Vector2 ClosestPointOnLine(Vector2 sourcePoint, Vector2 lineStart, Vector2 lineEnd)
{
var lineDelta = lineEnd - lineStart;
var u = (((sourcePoint.X - lineStart.X) * lineDelta.X) + ((sourcePoint.Y - lineStart.Y) * lineDelta.Y)) / lineDelta.LengthSquared();
return(lineStart + (lineDelta * Arithmetic.Clamp(u, 0.0f, 1.0f)));
}
protected override void Update(GameTime gameTime)
{
base.Update(gameTime);
if (!IsActive)
{
return;
}
var ms = Mouse.GetState();
if (ms.LeftButton == ButtonState.Pressed)
{
BottomRight = new Vector2(ms.X, ms.Y);
}
else if (ms.RightButton == ButtonState.Pressed)
{
TopLeft = new Vector2(ms.X, ms.Y);
}
var ks = Keyboard.GetState();
Alignment.Update(ref ks);
CharacterWrap.Update(ref ks);
WordWrap.Update(ref ks);
FreeType.Update(ref ks);
ShowOutlines.Update(ref ks);
Hinting.Update(ref ks);
Which.Update(ref ks);
Margin.Update(ref ks);
Indent.Update(ref ks);
var newSize = Arithmetic.Clamp(20 + (ms.ScrollWheelValue / 56f), 6, 200);
newSize = Arithmetic.Clamp(9 + (ms.ScrollWheelValue / 100f), 4, 200);
var font = ((FreeTypeFont)LatinFont);
if (newSize != font.SizePoints)
{
font.SizePoints = newSize;
Text.Invalidate();
Text2.Invalidate();
}
}
static ColorSpace()
{
for (int i = 0; i < 256; i++)
{
double fv = i / 255.0;
if (fv < 0.04045)
{
sRGBByteToLinearTable[i] = fv / 12.92;
}
else
{
sRGBByteToLinearTable[i] = Math.Pow((fv + 0.055) / 1.055, 2.4);
}
sRGBByteToLinearFloatTable[i] = (float)sRGBByteToLinearTable[i];
LinearByteTosRGBTable[i] = LinearTosRGB(i / 255.0);
sRGBByteToLinearByteTable[i] = (byte)Arithmetic.Clamp(sRGBByteToLinearTable[i] * 255, 0f, 255f);
LinearByteTosRGBByteTable[i] = (byte)(LinearTosRGB(i / 255.0) * 255);
InverseAlphaTable[i] = (i > 0) ? 1.0 / i : 0;
}
}
private THardwareBuffer AllocateSuitablySizedHardwareBuffer(int vertexCount, int indexCount)
{
THardwareBuffer buffer;
using (var e = _UnusedHardwareBuffers.GetEnumerator())
while (e.GetNext(out buffer))
{
if (
(buffer.VertexCount >= vertexCount) &&
(buffer.IndexCount >= indexCount)
)
{
// This buffer is large enough, so return it.
e.RemoveCurrent();
buffer.Age = Arithmetic.Clamp(buffer.Age - 2, 0, MaxBufferAge);
return(buffer);
}
}
if (MaxSoftwareBuffersPerHardwareBuffer > 1)
{
if (vertexCount < MinVerticesPerBuffer)
{
vertexCount = MinVerticesPerBuffer;
}
if (indexCount < MinIndicesPerBuffer)
{
indexCount = MinIndicesPerBuffer;
}
}
// We didn't find a suitably large buffer.
buffer = AllocateHardwareBuffer(vertexCount, indexCount);
return(buffer);
}
private void RasterizeAcceleratorOverlay(
UIOperationContext context, ref ImperativeRenderer labelRenderer, ref ImperativeRenderer targetRenderer,
Control control, AbstractString label, bool showFocused = false, Control forControl = null
)
{
if (control == null)
{
return;
}
if (!showFocused && (control == Focused) && !label.IsNull && (label.Length > 0))
{
return;
}
if (label.Length <= 0)
{
return;
}
var box = control.GetRect();
if ((box.Width <= 1) || (box.Height <= 1))
{
return;
}
var decorator = Decorations.AcceleratorTarget;
var settings = new Decorations.DecorationSettings {
Box = box,
ContentBox = box
};
decorator.Rasterize(ref context, ref targetRenderer, settings);
var outlinePadding = 1f;
decorator = Decorations.AcceleratorLabel;
Color?textColor = null;
decorator.GetTextSettings(ref context, default(ControlStates), out Material material, ref textColor, out _);
var layout = decorator.GlyphSource.LayoutString(label, buffer: AcceleratorOverlayBuffer);
var textScale = 1f;
if (layout.Size.X > (box.Width - decorator.Padding.X))
{
textScale = Math.Max(0.25f, (box.Width - decorator.Padding.X) / layout.Size.X);
}
var scaledSize = layout.Size * textScale;
var labelTraits = new DenseList <string> {
"above"
};
var labelPosition = box.Position - new Vector2(0, scaledSize.Y + decorator.Padding.Y + outlinePadding);
if (labelPosition.Y <= 0)
{
labelTraits[0] = "inside";
labelPosition = box.Position;
}
labelPosition.X = Arithmetic.Clamp(labelPosition.X, 0, CanvasSize.X - scaledSize.X);
labelPosition.Y = Math.Max(0, labelPosition.Y);
var labelBox = new RectF(
labelPosition,
scaledSize + decorator.Padding.Size
);
if (IsObstructedByAnyPreviousBox(ref labelBox, forControl))
{
labelBox.Left = box.Extent.X - labelBox.Width;
}
if (IsObstructedByAnyPreviousBox(ref labelBox, forControl))
{
labelTraits[0] = "below";
labelBox.Left = labelPosition.X;
labelBox.Top = box.Extent.Y + 1; // FIXME: Why the +1?
}
while (IsObstructedByAnyPreviousBox(ref labelBox, forControl))
{
labelTraits[0] = "stacked";
labelBox.Left = box.Left;
labelBox.Width = box.Width;
labelBox.Top = labelBox.Extent.Y + 0.5f;
}
// HACK
var labelContentBox = new RectF(
labelBox.Position + new Vector2(decorator.Padding.Left, decorator.Padding.Top),
scaledSize
);
settings = new Decorations.DecorationSettings {
Box = labelBox,
ContentBox = box,
Traits = labelTraits
};
decorator.Rasterize(ref context, ref labelRenderer, settings);
labelRenderer.DrawMultiple(layout.DrawCalls, offset: labelContentBox.Position.Floor(), scale: new Vector2(textScale), layer: 1);
RasterizedOverlayBoxes.Add(new RasterizedOverlayBox {
Control = forControl,
ControlBox = box,
LabelBox = labelBox
});
}
