public void Test_ExtSizeF()
{
ExtSizeF sz = new ExtSizeF(11, 11);
Assert.AreEqual(11, sz.Width);
Assert.AreEqual(11, sz.Height);
Assert.IsFalse(sz.IsEmpty);
Assert.AreEqual("{Width=11, Height=11}", sz.ToString());
}
private bool IsNarrowSegment(string text, float radius, float wedgeAngle, IFont font)
{
ExtSizeF size = fRenderer.GetTextSize(text, font);
radius = radius + size.Height / 2.0f;
float wedgeL = radius * (float)MathHelper.DegreesToRadians(wedgeAngle);
return(wedgeL / size.Width <= 0.9f);
}
public override void DrawArcText(string text, float centerX, float centerY, float radius,
float startAngle, float wedgeAngle,
bool inside, bool clockwise, IFont font, IBrush brush)
{
ExtSizeF size = GetTextSize(text, font);
radius = radius + size.Height / 2.0f;
float textAngle = Math.Min((float)SysUtils.RadiansToDegrees((size.Width * 1.75f) / radius), wedgeAngle);
float deltaAngle = (wedgeAngle - textAngle) / 2.0f;
if (clockwise)
{
startAngle += deltaAngle;
}
else
{
startAngle += wedgeAngle - deltaAngle;
}
startAngle = -startAngle;
Matrix previousTransformation = fCanvas.Transform;
for (int i = 0; i < text.Length; ++i)
{
float offset = (textAngle * ((float)(i) / text.Length));
float angle = clockwise ? startAngle - offset : startAngle + offset;
double radAngle = angle * (Math.PI / 180.0d);
float x = (float)(centerX + Math.Cos(radAngle) * radius);
float y = (float)(centerY - Math.Sin(radAngle) * radius);
float charRotation = 90 - (inside ? angle : angle + 180);
charRotation *= (float)(Math.PI / 180.0f);
float cosine = (float)(Math.Cos(charRotation));
float sine = (float)(Math.Sin(charRotation));
Matrix m = new Matrix(cosine, sine, -sine, cosine, x, y);
m.Multiply(previousTransformation, MatrixOrder.Append);
fCanvas.Transform = m;
string chr = new string(text[i], 1);
DrawString(chr, font, brush, 0, 0);
}
fCanvas.Transform = previousTransformation;
}
public virtual void DrawArcText(string text, float centerX, float centerY,
float radius, float startAngle, float wedgeAngle,
bool inside, bool clockwise, IFont font, IBrush brush)
{
ExtSizeF size = GetTextSize(text, font);
radius = radius + size.Height / 2.0f;
float textAngle = Math.Min((float)MathHelper.RadiansToDegrees((size.Width * 1.75f) / radius), wedgeAngle);
float deltaAngle = (wedgeAngle - textAngle) / 2.0f;
if (clockwise)
{
startAngle += deltaAngle;
}
else
{
startAngle += wedgeAngle - deltaAngle;
}
startAngle = -startAngle;
for (int i = 0; i < text.Length; ++i)
{
float offset = (textAngle * ((float)(i) / text.Length));
float angle = clockwise ? startAngle - offset : startAngle + offset;
double radAngle = angle * (Math.PI / 180.0d);
float x = (float)(centerX + Math.Cos(radAngle) * radius);
float y = (float)(centerY - Math.Sin(radAngle) * radius);
float charRotation = 90 - (inside ? angle : angle + 180);
SaveTransform();
TranslateTransform(x, y);
RotateTransform(charRotation);
DrawString(text.Substring(i, 1), font, brush, 0, 0);
RestoreTransform();
}
}
