/// <summary>
/// Draws the provided Points as a closed Linear Polygon with the provided brush at the provided thickness.
/// </summary>
/// <param name="source">The image this method extends.</param>
/// <param name="options">The options.</param>
/// <param name="color">The color.</param>
/// <param name="thickness">The thickness.</param>
/// <param name="points">The points.</param>
/// <returns>The <see cref="Image{TPixel}"/>.</returns>
public static IImageProcessingContext DrawPolygon(
this IImageProcessingContext source,
GraphicsOptions options,
Color color,
float thickness,
params PointF[] points) =>
source.DrawPolygon(options, new SolidBrush(color), thickness, points);
/// <summary>
/// Draws the provided Points as a closed Linear Polygon with the provided brush at the provided thickness.
/// </summary>
/// <param name="source">The image this method extends.</param>
/// <param name="options">The options.</param>
/// <param name="brush">The brush.</param>
/// <param name="thickness">The thickness.</param>
/// <param name="points">The points.</param>
/// <returns>The <see cref="IImageProcessingContext"/> to allow chaining of operations.</returns>
public static IImageProcessingContext DrawPolygon(
this IImageProcessingContext source,
ShapeGraphicsOptions options,
IBrush brush,
float thickness,
params PointF[] points) =>
source.DrawPolygon(options, new Pen(brush, thickness), points);
private static void DrawCalibrationMarker(IImageProcessingContext context)
{
var currentPoint = _referencePoints[_currentPointIdx];
context.DrawPolygon(Color.Black, 2, Square(10, currentPoint, 45))
.DrawPolygon(Color.Black, 1, Square(1, currentPoint));
}
private void DrawRect(IImageProcessingContext <Rgba32> image, int iwidth, int iheight, BoundingBox mainRect, BoundingBox rect, Rgba32 color)
{
var top = (rect.Y - mainRect.Y) / mainRect.Height * iheight;
var height = rect.Height / mainRect.Height * iheight;
var left = (rect.X - mainRect.X) / mainRect.Width * iwidth;
var width = rect.Width / mainRect.Width * iwidth;
var right = left + width;
var bottom = top + height;
image.DrawPolygon(color, 2f, new PointF[] {
new PointF(left, top),
new PointF(right, top),
new PointF(right, bottom),
new PointF(left, bottom),
});
}
private void DrawCustomGauge(bool top, string labelText, string value, float ratio, int img_width, float chevronSize, float width_margin, float chart_width, float min, float max, IImageProcessingContext ctx, bool hideHeader)
{
float.TryParse(value, out float floatValue);
bool missingHeaderLabel = (labelText?.Length ?? 0) == 0;
bool writeValueHeaderAndChevron = !hideHeader || (floatValue >= min && floatValue <= max);
if (writeValueHeaderAndChevron && !missingHeaderLabel)
{
var pen = new Pen(Color.White, chevronSize + 1);
var arrowStartX = (ratio * img_width) + width_margin;
var arrowStartY = (HALF_WIDTH - ((chart_width / 2) * (top ? 1 : -1)));
var arrowAddY = arrowStartY - ((chevronSize * 2) * (top ? 1 : -1));
var startPoint = new PointF(arrowStartX, arrowStartY);
var right = new PointF(arrowStartX + chevronSize, arrowAddY);
var left = new PointF(arrowStartX - chevronSize, arrowAddY);
PointF[] needle = { startPoint, right, left, startPoint };
var valueText = value.ToString();
var textColor = (floatValue > max || floatValue < min) ? Color.Red : Color.White;
var font = SystemFonts.CreateFont("Arial", chevronSize * 4, FontStyle.Regular);
var size = TextMeasurer.Measure(valueText, new RendererOptions(font));
float adjustY = top ? Math.Abs(-5 - size.Height) : 5;
arrowAddY = top ? arrowAddY - adjustY : arrowAddY + adjustY;
var valuePoint = new PointF(HALF_WIDTH - size.Width / 2, arrowAddY);
ctx.DrawText(valueText, font, textColor, valuePoint);
ctx.DrawPolygon(pen, needle);
var text = labelText != string.Empty ? labelText[0].ToString() : string.Empty;
size = TextMeasurer.Measure(text, new RendererOptions(SystemFonts.CreateFont("Arial", chevronSize * 3, FontStyle.Regular)));
startPoint.Y -= top ? size.Height : 0;
startPoint.X -= size.Width / 2;
ctx.DrawText(text, SystemFonts.CreateFont("Arial", chevronSize * 3, FontStyle.Regular), Color.Black, startPoint);
}
}
/// <summary>
/// Draws the provided Points as a closed Linear Polygon with the provided brush at the provided thickness.
/// </summary>
/// <typeparam name="TPixel">The type of the color.</typeparam>
/// <param name="source">The image this method extends.</param>
/// <param name="options">The options.</param>
/// <param name="color">The color.</param>
/// <param name="thickness">The thickness.</param>
/// <param name="points">The points.</param>
/// <returns>The <see cref="Image{TPixel}"/>.</returns>
public static IImageProcessingContext <TPixel> DrawPolygon <TPixel>(this IImageProcessingContext <TPixel> source, GraphicsOptions options, TPixel color, float thickness, params PointF[] points)
where TPixel : struct, IPixel <TPixel>
=> source.DrawPolygon(options, new SolidBrush <TPixel>(color), thickness, points);
/// <summary>
/// Draws the provided Points as a closed Linear Polygon with the provided brush at the provided thickness.
/// </summary>
/// <typeparam name="TPixel">The type of the color.</typeparam>
/// <param name="source">The image this method extends.</param>
/// <param name="color">The color.</param>
/// <param name="thickness">The thickness.</param>
/// <param name="points">The points.</param>
/// <param name="options">The options.</param>
/// <returns>The <see cref="Image{TPixel}"/>.</returns>
public static IImageProcessingContext <TPixel> DrawPolygon <TPixel>(this IImageProcessingContext <TPixel> source, TPixel color, float thickness, PointF[] points, GraphicsOptions options)
where TPixel : struct, IPixel <TPixel>
{
return(source.DrawPolygon(new SolidBrush <TPixel>(color), thickness, points, options));
}
public static IImageProcessingContext DrawBoxedText(this IImageProcessingContext processingContext,
Font font,
string text,
Color mainColor,
Color outlineColor,
Rectangle rectangle,
VerticalAlignment verticalAlignment,
bool debugRectangle = false)
{
Size imgSize = processingContext.GetCurrentSize();
float targetWidth = rectangle.Width;
float targetHeight = rectangle.Height;
float targetMinHeight = (int)(targetHeight * 0.95);
var scaledFont = font;
FontRectangle s = new(0, 0, float.MaxValue, float.MaxValue);
float scaleFactor = (scaledFont.Size / 2);
int trapCount = (int)scaledFont.Size * 2;
if (trapCount < 10)
{
trapCount = 10;
}
bool isTooSmall = false;
while ((s.Height > targetHeight || s.Height < targetMinHeight) && trapCount > 0)
{
if (s.Height > targetHeight)
{
if (isTooSmall)
{
scaleFactor /= 2;
}
scaledFont = new Font(scaledFont, scaledFont.Size - scaleFactor);
isTooSmall = false;
}
if (s.Height < targetMinHeight)
{
if (!isTooSmall)
{
scaleFactor /= 2;
}
scaledFont = new Font(scaledFont, scaledFont.Size + scaleFactor);
isTooSmall = true;
}
trapCount--;
s = TextMeasurer.Measure(text, new RendererOptions(scaledFont)
{
WrappingWidth = targetWidth
});
}
var textGraphicOptions = new TextGraphicsOptions()
{
TextOptions =
{
HorizontalAlignment = HorizontalAlignment.Center,
VerticalAlignment = verticalAlignment,
WrapTextWidth = targetWidth
}
};
var position = new PointF(rectangle.X, 0);
switch (verticalAlignment)
{
case VerticalAlignment.Top:
position.Y = rectangle.Y;
break;
case VerticalAlignment.Center:
position.Y = rectangle.Y + rectangle.Height / 2;
break;
case VerticalAlignment.Bottom:
position.Y = rectangle.Y + rectangle.Height;
break;
default:
break;
}
if (debugRectangle)
{
PointF[] points = { new PointF(rectangle.X, rectangle.Y), new PointF(rectangle.X, rectangle.Y + rectangle.Height), new PointF(rectangle.X + rectangle.Width, rectangle.Y + rectangle.Height), new PointF(rectangle.X + rectangle.Width, rectangle.Y) };
processingContext = processingContext.DrawPolygon(new Pen(Color.Red, 5), points);
}
return(processingContext.DrawText(textGraphicOptions, text, scaledFont, Brushes.Solid(mainColor), Pens.Solid(outlineColor, font.Size / 10), position));
}
