/// <summary> Override <see cref="PalettePicker.Draw"/>. </summary>
public override void Draw(CanvasControl sender, CanvasDrawingSession ds, HSV hsv, Vector2 center, float squareHalfWidth, float squareHalfHeight, SolidColorBrush stroke)
{
//Palette
Rect rect = new Rect(center.X - squareHalfWidth, center.Y - squareHalfHeight, squareHalfWidth * 2, squareHalfHeight * 2);
using (CanvasLinearGradientBrush rainbow = new CanvasLinearGradientBrush(sender, this.BackgroundStops))
{
rainbow.StartPoint = new Vector2(center.X - squareHalfWidth, center.Y);
rainbow.EndPoint = new Vector2(center.X + squareHalfWidth, center.Y);
ds.FillRoundedRectangle(rect, 4, 4, rainbow);
}
using (CanvasLinearGradientBrush brush = new CanvasLinearGradientBrush(sender, this.ForegroundStops))
{
brush.StartPoint = new Vector2(center.X, center.Y - squareHalfHeight);
brush.EndPoint = new Vector2(center.X, center.Y + squareHalfHeight);
ds.FillRoundedRectangle(rect, 4, 4, brush);
}
ds.DrawRoundedRectangle(rect, 4, 4, stroke.Color);
//Thumb
float px = ((float)hsv.H - 180) * squareHalfWidth / 180 + center.X;
float py = (50 - (float)hsv.S) * squareHalfHeight / 50 + center.Y;
ds.FillCircle(px, py, 12, stroke.Color);
ds.FillCircle(px, py, 11, HSV.HSVtoRGB(hsv));
}
/// <summary> Override <see cref="PaletteBase.GetSliderBrush"/>. </summary>
public override GradientStopCollection GetSliderBrush(HSV HSV)
{
byte A = HSV.A;
float H = HSV.H;
float S = HSV.S;
float L = HSV.V;
return(new GradientStopCollection()
{
new GradientStop()
{
Offset = 0,
Color = HSV.HSVtoRGB(A, H, 0.0f, L)
},
new GradientStop()
{
Offset = 1,
Color = HSV.HSVtoRGB(A, H, 100.0f, L)
},
});
}
private Color[] GetColorfulColors(Color color, int count)
{
Color[] colors = new Color[count];
float h = HSV.RGBtoHSV(color).H;
float span = 100 / count;
for (int i = 0; i < count; i++)
{
float v = 100 - i * span;
float s = i % 4 * 20 + 20;
colors[i] = HSV.HSVtoRGB(255, h, s, v);
}
return(colors);
}
/// <summary> Override <see cref="PaletteBase.GetSliderBrush"/>. </summary>
public override GradientStopCollection GetSliderBrush(HSV hsv)
{
byte A = hsv.A;
float H = hsv.H;
float S = hsv.S;
float L = hsv.V;
return(new GradientStopCollection()
{
new GradientStop()
{
Offset = 0,
Color = HSV.HSVtoRGB(A, 0, S, L)
},
new GradientStop()
{
Offset = 0.16666667,
Color = HSV.HSVtoRGB(A, 60, S, L)
},
new GradientStop()
{
Offset = 0.33333333,
Color = HSV.HSVtoRGB(A, 120, S, L)
},
new GradientStop()
{
Offset = 0.5,
Color = HSV.HSVtoRGB(A, 180, S, L)
},
new GradientStop()
{
Offset = 0.66666667,
Color = HSV.HSVtoRGB(A, 240, S, L)
},
new GradientStop()
{
Offset = 0.83333333,
Color = HSV.HSVtoRGB(A, 300, S, L)
},
new GradientStop()
{
Offset = 1,
Color = HSV.HSVtoRGB(A, 0, S, L)
},
});
}
public static Color CalcWheelColor(float x, float y)
{
x = x - 0.5f;
y = y - 0.5f;
float saturation = 200.0f * (float)Math.Sqrt(x * x + y * y);
if (saturation > 100.0f)
{
saturation = 100.0f;
}
float hue = y < 0 ?
(float)(Math.Atan2(-y, -x) / Math.PI) * 180.0f + 180.0f :
(float)(Math.Atan2(y, x) / Math.PI) * 180.0f;
return(HSV.HSVtoRGB(255, hue, saturation, 100.0f));
}
/// <summary> Override <see cref="PalettePicker.GetSliderBrush"/>. </summary>
public override GradientStopCollection GetSliderBrush(HSV hsv)
{
byte A = HSV.A;
float H = HSV.H;
float S = HSV.S;
float V = HSV.V;
return(new GradientStopCollection()
{
new GradientStop()
{
Offset = 0.0f,
Color = HSV.HSVtoRGB(A, H, S, 0)
},
new GradientStop()
{
Offset = 1.0f,
Color = HSV.HSVtoRGB(A, H, S, 100)
},
});
}
/// <summary> Override <see cref="PalettePicker.Draw"/>. </summary>
public override void Draw(CanvasControl sender, CanvasDrawingSession ds, HSV hsv, Vector2 Center, float squareHalfWidth, float squareHalfHeight, SolidColorBrush stroke)
{
//Palette
Rect rect = new Rect(Center.X - squareHalfWidth, Center.Y - squareHalfHeight, squareHalfWidth * 2, squareHalfHeight * 2);
ds.FillRoundedRectangle(rect, 4, 4, new CanvasLinearGradientBrush(sender, Windows.UI.Colors.White, HSV.HSVtoRGB(hsv.H))
{
StartPoint = new Vector2(Center.X - squareHalfWidth, Center.Y), EndPoint = new Vector2(Center.X + squareHalfWidth, Center.Y)
});
ds.FillRoundedRectangle(rect, 4, 4, new CanvasLinearGradientBrush(sender, Windows.UI.Colors.Transparent, Windows.UI.Colors.Black)
{
StartPoint = new Vector2(Center.X, Center.Y - squareHalfHeight), EndPoint = new Vector2(Center.X, Center.Y + squareHalfHeight)
});
ds.DrawRoundedRectangle(rect, 4, 4, stroke.Color);
//Thumb
float px = ((float)hsv.S - 50) * squareHalfWidth / 50 + Center.X;
float py = (50 - (float)hsv.V) * squareHalfHeight / 50 + Center.Y;
ds.FillCircle(px, py, 12, stroke.Color);
ds.FillCircle(px, py, 11, HSV.HSVtoRGB(hsv));
}