/// <summary>
/// Gets the color at an specific point assuming the brush is drawn into the given rectangle.
/// </summary>
/// <param name="rectangle">The rectangle in which the brush should be drawn.</param>
/// <param name="renderTarget">The target (key/point) from which the color should be taken.</param>
/// <returns>The color at the specified point.</returns>
protected override CorsairColor GetColorAtPoint(RectangleF rectangle, BrushRenderTarget renderTarget)
{
if (Gradient == null)
{
return(CorsairColor.Transparent);
}
var startPoint = new PointF(StartPoint.X * rectangle.Width, StartPoint.Y * rectangle.Height);
var endPoint = new PointF(EndPoint.X * rectangle.Width, EndPoint.Y * rectangle.Height);
var offset = GradientHelper.CalculateLinearGradientOffset(startPoint, endPoint, renderTarget.Point);
return(Gradient.GetColor(offset));
}
/// <summary>
/// Gets the color at an specific point assuming the brush is drawn into the given rectangle.
/// </summary>
/// <param name="rectangle">The rectangle in which the brush should be drawn.</param>
/// <param name="renderTarget">The target (key/point) from which the color should be taken.</param>
/// <returns>The color at the specified point.</returns>
protected override CorsairColor GetColorAtPoint(RectangleF rectangle, BrushRenderTarget renderTarget)
{
var centerX = rectangle.Width * Center.X;
var centerY = rectangle.Height * Center.Y;
var angle = Math.Atan2(renderTarget.Point.Y - centerY, renderTarget.Point.X - centerX) - Origin;
if (angle < 0)
{
angle += Math.PI * 2;
}
var offset = (float)(angle / (Math.PI * 2));
return(Gradient.GetColor(offset));
}
/// <summary>
/// Gets the color at an specific point assuming the brush is drawn into the given rectangle.
/// </summary>
/// <param name="rectangle">The rectangle in which the brush should be drawn.</param>
/// <param name="renderTarget">The target (key/point) from which the color should be taken.</param>
/// <returns>The color at the specified point.</returns>
protected override CorsairColor GetColorAtPoint(RectangleF rectangle, BrushRenderTarget renderTarget)
{
if (Image == null || Image.Width == 0 || Image.Height == 0)
{
return(CorsairColor.Transparent);
}
//TODO DarthAffe 16.03.2016: Refactor to allow more scale-/interpolation-modes
var scaleX = Image.Width / rectangle.Width;
var scaleY = Image.Height / rectangle.Height;
var x = (int)(renderTarget.Point.X * scaleX);
var y = (int)(renderTarget.Point.Y * scaleY);
x = Math.Max(0, Math.Min(x, Image.Width - 1));
y = Math.Max(0, Math.Min(y, Image.Height - 1));
return(Image.GetPixel(x, y));
}
/// <summary>
/// Gets the color at an specific point assuming the brush is drawn into the given rectangle.
/// </summary>
/// <param name="rectangle">The rectangle in which the brush should be drawn.</param>
/// <param name="renderTarget">The target (key/point) from which the color should be taken.</param>
/// <returns>The color at the specified point.</returns>
protected override CorsairColor GetColorAtPoint(RectangleF rectangle, BrushRenderTarget renderTarget)
{
if (Gradient == null)
{
return(CorsairColor.Transparent);
}
var centerPoint = new PointF(rectangle.X + rectangle.Width * Center.X, rectangle.Y + rectangle.Height * Center.Y);
// Calculate the distance to the farthest point from the center as reference (this has to be a corner)
// ReSharper disable once RedundantCast - never trust this ...
var refDistance =
(float)Math.Max(
Math.Max(
Math.Max(GradientHelper.CalculateDistance(rectangle.Location, centerPoint),
GradientHelper.CalculateDistance(new PointF(rectangle.X + rectangle.Width, rectangle.Y), centerPoint)),
GradientHelper.CalculateDistance(new PointF(rectangle.X, rectangle.Y + rectangle.Height), centerPoint)),
GradientHelper.CalculateDistance(new PointF(rectangle.X + rectangle.Width, rectangle.Y + rectangle.Height), centerPoint));
var distance = GradientHelper.CalculateDistance(renderTarget.Point, centerPoint);
var offset = distance / refDistance;
return(Gradient.GetColor(offset));
}
/// <summary>
/// Gets the color at an specific point assuming the brush is drawn into the given rectangle.
/// </summary>
/// <param name="rectangle">The rectangle in which the brush should be drawn.</param>
/// <param name="renderTarget">The target (key/point) from which the color should be taken.</param>
/// <returns>The color at the specified point.</returns>
protected override CorsairColor GetColorAtPoint(RectangleF rectangle, BrushRenderTarget renderTarget) => ColorHelper.ColorFromHSV(
(float)_random.NextDouble() * 360f, 1, 1);
/// <summary> /// Gets the color at an specific point assuming the brush is drawn into the given rectangle. /// </summary> /// <param name="rectangle">The rectangle in which the brush should be drawn.</param> /// <param name="renderTarget">The target (key/point) from which the color should be taken.</param> /// <returns>The color at the specified point.</returns> protected abstract CorsairColor GetColorAtPoint(RectangleF rectangle, BrushRenderTarget renderTarget);