/// <summary>
/// Renders the contour label background.
/// </summary>
/// <param name="rc">
/// The render context.
/// </param>
/// <param name="cl">
/// The contour label.
/// </param>
private void RenderLabelBackground(IRenderContext rc, ContourLabel cl)
{
if (this.LabelBackground != null)
{
// Calculate background polygon
var size = rc.MeasureText(cl.Text, this.ActualFont, this.ActualFontSize, this.ActualFontWeight);
double a = cl.Angle / 180 * Math.PI;
double dx = Math.Cos(a);
double dy = Math.Sin(a);
double ux = dx * 0.6;
double uy = dy * 0.6;
double vx = -dy * 0.5;
double vy = dx * 0.5;
double x = cl.Position.X;
double y = cl.Position.Y;
var bpts = new[]
{
new ScreenPoint(x - (size.Width * ux) - (size.Height * vx), y - (size.Width * uy) - (size.Height * vy)),
new ScreenPoint(x + (size.Width * ux) - (size.Height * vx), y + (size.Width * uy) - (size.Height * vy)),
new ScreenPoint(x + (size.Width * ux) + (size.Height * vx), y + (size.Width * uy) + (size.Height * vy)),
new ScreenPoint(x - (size.Width * ux) + (size.Height * vx), y - (size.Width * uy) + (size.Height * vy))
};
rc.DrawPolygon(bpts, this.LabelBackground, null);
}
}
/// <summary>
/// Renders the contour label.
/// </summary>
/// <param name="rc">
/// The render context.
/// </param>
/// <param name="cl">
/// The contour label.
/// </param>
private void RenderLabel(IRenderContext rc, ContourLabel cl)
{
if (this.ActualFontSize > 0)
{
rc.DrawText(
cl.Position,
cl.Text,
this.ActualTextColor,
this.ActualFont,
this.ActualFontSize,
this.ActualFontWeight,
cl.Angle,
HorizontalTextAlign.Center,
VerticalTextAlign.Middle);
}
}
/// <summary>
/// Renders the contour label background.
/// </summary>
/// <param name="rc">The render context.</param>
/// <param name="cl">The contour label.</param>
private void RenderLabelBackground(IRenderContext rc, ContourLabel cl)
{
if (this.LabelBackground.IsInvisible())
{
return;
}
// Calculate background polygon
var size = rc.MeasureText(cl.Text, this.ActualFont, this.ActualFontSize, this.ActualFontWeight);
double a = cl.Angle / 180 * Math.PI;
double dx = Math.Cos(a);
double dy = Math.Sin(a);
double ux = dx * 0.6;
double uy = dy * 0.6;
double vx = -dy * 0.5;
double vy = dx * 0.5;
double x = cl.Position.X;
double y = cl.Position.Y;
var bpts = new[]
{
new ScreenPoint(x - (size.Width * ux) - (size.Height * vx), y - (size.Width * uy) - (size.Height * vy)),
new ScreenPoint(x + (size.Width * ux) - (size.Height * vx), y + (size.Width * uy) - (size.Height * vy)),
new ScreenPoint(x + (size.Width * ux) + (size.Height * vx), y + (size.Width * uy) + (size.Height * vy)),
new ScreenPoint(x - (size.Width * ux) + (size.Height * vx), y - (size.Width * uy) + (size.Height * vy))
};
rc.DrawPolygon(bpts, this.LabelBackground, OxyColors.Undefined);
}
/// <summary>
/// Renders the contour label.
/// </summary>
/// <param name="rc">The render context.</param>
/// <param name="cl">The contour label.</param>
private void RenderLabel(IRenderContext rc, ContourLabel cl)
{
if (this.ActualFontSize > 0)
{
rc.DrawText(
cl.Position,
cl.Text,
this.ActualTextColor,
this.ActualFont,
this.ActualFontSize,
this.ActualFontWeight,
cl.Angle,
HorizontalAlignment.Center,
VerticalAlignment.Middle);
}
}
