private void TriangleRegion_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyData == Keys.Add)
{
if (Angle == TriangleAngle.Left)
{
Angle = TriangleAngle.Top;
}
else
{
Angle++;
}
}
else if (e.KeyData == Keys.Subtract)
{
if (Angle == TriangleAngle.Top)
{
Angle = TriangleAngle.Left;
}
else
{
Angle--;
}
}
}
private void TriangleRegion_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyData == Keys.Add)
{
if (Angle == TriangleAngle.Left)
{
Angle = TriangleAngle.Top;
}
else
{
Angle++;
}
}
else if (e.KeyData == Keys.Subtract)
{
if (Angle == TriangleAngle.Top)
{
Angle = TriangleAngle.Left;
}
else
{
Angle--;
}
}
}
public TriangleRegion(Image backgroundImage = null)
: base(backgroundImage)
{
Angle = TriangleAngle.Top;
MouseWheel += new MouseEventHandler(TriangleRegion_MouseWheel);
}
public TriangleRegion(Image backgroundImage = null)
: base(backgroundImage)
{
Angle = TriangleAngle.Top;
KeyDown += TriangleRegion_KeyDown;
}
private void TriangleRegion_MouseWheel(object sender, MouseEventArgs e)
{
if (e.Delta > 0)
{
if (Angle == TriangleAngle.Left)
{
Angle = TriangleAngle.Top;
}
else
{
Angle++;
}
}
else if (e.Delta < 0)
{
if (Angle == TriangleAngle.Top)
{
Angle = TriangleAngle.Left;
}
else
{
Angle--;
}
}
}
public TriangleRegion(Image backgroundImage = null)
: base(backgroundImage)
{
Angle = TriangleAngle.Top;
KeyDown += TriangleRegion_KeyDown;
}
private void TriangleRegion_MouseWheel(object sender, MouseEventArgs e)
{
if (e.Delta > 0)
{
if (Angle == TriangleAngle.Left)
{
Angle = TriangleAngle.Top;
}
else
{
Angle++;
}
}
else if (e.Delta < 0)
{
if (Angle == TriangleAngle.Top)
{
Angle = TriangleAngle.Left;
}
else
{
Angle--;
}
}
}
/// <summary>
/// Calculates the tangent of <paramref name="angle"/> in <paramref name="tri"/>.
/// </summary>
/// <param name="tri">The triangle</param>
/// <param name="angle">The angle to calculate.</param>
/// <returns>The tangent of <paramref name="angle"/>.</returns>
public static double Tangent(Triangle tri, TriangleAngle angle = TriangleAngle.C)
{
switch (angle)
{
case TriangleAngle.A:
return tri.SideB / tri.SideA;
default:
return tri.AngleA / tri.SideB;
}
}
/// <summary>
/// Calculates the cosine of <paramref name="angle"/> in <paramref name="tri"/>.
/// </summary>
/// <param name="tri">The triangle</param>
/// <param name="angle">The angle to calculate.</param>
/// <returns>The cosine of <paramref name="angle"/>.</returns>
public static double Cosine(Triangle tri, TriangleAngle angle = TriangleAngle.C)
{
switch (angle)
{
case TriangleAngle.A:
return tri.SideA / tri.SideC;
default:
return tri.AngleB / tri.SideC;
}
}
/// <summary>
/// Calculates the tangent of <paramref name="angle"/> in <paramref name="tri"/>.
/// </summary>
/// <param name="tri">The triangle</param>
/// <param name="angle">The angle to calculate.</param>
/// <returns>The tangent of <paramref name="angle"/>.</returns>
public static double Tangent(Triangle tri, TriangleAngle angle = TriangleAngle.C)
{
switch (angle)
{
case TriangleAngle.A:
return(tri.SideB / tri.SideA);
default:
return(tri.AngleA / tri.SideB);
}
}
/// <summary>
/// Calculates the cosine of <paramref name="angle"/> in <paramref name="tri"/>.
/// </summary>
/// <param name="tri">The triangle</param>
/// <param name="angle">The angle to calculate.</param>
/// <returns>The cosine of <paramref name="angle"/>.</returns>
public static double Cosine(Triangle tri, TriangleAngle angle = TriangleAngle.C)
{
switch (angle)
{
case TriangleAngle.A:
return(tri.SideA / tri.SideC);
default:
return(tri.AngleB / tri.SideC);
}
}
public TriangleRegion()
{
Angle = TriangleAngle.Top;
KeyDown += TriangleRegion_KeyDown;
}
public static void AddTriangle(this GraphicsPath graphicsPath, RectangleF rect, TriangleAngle angle = TriangleAngle.Top)
{
PointF p1, p2, p3;
switch (angle)
{
default:
case TriangleAngle.Top:
p1 = new PointF(rect.X + rect.Width / 2.0f, rect.Y);
p2 = new PointF(rect.X, rect.Y + rect.Height);
p3 = new PointF(rect.X + rect.Width, rect.Y + rect.Height);
break;
case TriangleAngle.Right:
p1 = new PointF(rect.X + rect.Width, rect.Y + rect.Height / 2.0f);
p2 = new PointF(rect.X, rect.Y);
p3 = new PointF(rect.X, rect.Y + rect.Height);
break;
case TriangleAngle.Bottom:
p1 = new PointF(rect.X + rect.Width / 2.0f, rect.Y + rect.Height);
p2 = new PointF(rect.X + rect.Width, rect.Y);
p3 = new PointF(rect.X, rect.Y);
break;
case TriangleAngle.Left:
p1 = new PointF(rect.X, rect.Y + rect.Height / 2.0f);
p2 = new PointF(rect.X + rect.Width, rect.Y + rect.Height);
p3 = new PointF(rect.X + rect.Width, rect.Y);
break;
}
graphicsPath.AddPolygon(new PointF[] { p1, p2, p3 });
}
public static void AddTriangle(this GraphicsPath graphicsPath, RectangleF rect, TriangleAngle angle = TriangleAngle.Top)
{
PointF p1, p2, p3;
switch (angle)
{
default:
case TriangleAngle.Top:
p1 = new PointF(rect.X + rect.Width / 2.0f, rect.Y);
p2 = new PointF(rect.X, rect.Y + rect.Height);
p3 = new PointF(rect.X + rect.Width, rect.Y + rect.Height);
break;
case TriangleAngle.Right:
p1 = new PointF(rect.X + rect.Width, rect.Y + rect.Height / 2.0f);
p2 = new PointF(rect.X, rect.Y);
p3 = new PointF(rect.X, rect.Y + rect.Height);
break;
case TriangleAngle.Bottom:
p1 = new PointF(rect.X + rect.Width / 2.0f, rect.Y + rect.Height);
p2 = new PointF(rect.X + rect.Width, rect.Y);
p3 = new PointF(rect.X, rect.Y);
break;
case TriangleAngle.Left:
p1 = new PointF(rect.X, rect.Y + rect.Height / 2.0f);
p2 = new PointF(rect.X + rect.Width, rect.Y + rect.Height);
p3 = new PointF(rect.X + rect.Width, rect.Y);
break;
}
graphicsPath.AddPolygon(new PointF[] { p1, p2, p3 });
}
