/// <summary>
/// Get of set color components.
/// </summary>
/// <param name="c">
/// A <see cref="Int32"/> indicating the color component index.
/// </param>
/// <returns>
/// The color component converted from a normalized floating point number.
/// </returns>
/// <exception cref="IndexOutOfRangeException">
/// Exception thrown when <paramref name="c"/> is less than 0 or greater than the number of components of this IColor implementation.
/// </exception>
public float this[int c]
{
get
{
switch (c)
{
case 0: return(r);
default:
throw new IndexOutOfRangeException();
}
}
set
{
if (value < 0.0f || value > 1.0f)
{
throw new InvalidOperationException("value out of range");
}
switch (c)
{
case 0: r = (HalfFloat)value; break;
default:
throw new IndexOutOfRangeException();
}
}
}
/// <summary>
/// Construct a ColorRGBAHF specifying RGBA components.
/// </summary>
/// <param name="r">
/// A <see cref="HalfFloat"/> that specify the red component.
/// </param>
/// <param name="g">
/// A <see cref="HalfFloat"/> that specify the green component.
/// </param>
/// <param name="b">
/// A <see cref="HalfFloat"/> that specify the blue component.
/// </param>
/// <param name="a">
/// A <see cref="HalfFloat"/> that specify the alpha component.
/// </param>
public ColorRGBAHF(HalfFloat r, HalfFloat g, HalfFloat b, HalfFloat a)
{
this.r = r;
this.g = g;
this.b = b;
this.a = a;
}
/// <summary>
/// Indicates whether the this ColorRGBAHF is equal to another ColorRGBAHF, tolerating an absolute error.
/// </summary>
/// <param name="other">
/// The <see cref="ColorRGBAHF"/> to compare with this ColorRGBAHF.
/// </param>
/// <param name="precision">
/// The <see cref="HalfFloat"/> that specifies the maximum absolute error tollerance.
/// </param>
/// <returns>
/// It returns true if the this ColorRGBAHF is equal to <paramref name="other"/>; otherwise, false.
/// </returns>
public bool Equals(ColorRGBAHF other, HalfFloat precision)
{
if (Math.Abs(r - other.r) > precision)
{
return(false);
}
if (Math.Abs(g - other.g) > precision)
{
return(false);
}
if (Math.Abs(b - other.b) > precision)
{
return(false);
}
if (Math.Abs(a - other.a) > precision)
{
return(false);
}
return(true);
}
/// <summary>
/// Construct a ColorRHF specifying R component.
/// </summary>
/// <param name="r">
/// A <see cref="HalfFloat"/> that specify the red component.
/// </param>
public ColorRHF(HalfFloat r)
{
// Setup R components
this.r = r;
}
/// <summary>
/// Construct a ColorRGBAHF specifying RGB components.
/// </summary>
/// <param name="r">
/// A <see cref="HalfFloat"/> that specify the red component.
/// </param>
/// <param name="g">
/// A <see cref="HalfFloat"/> that specify the green component.
/// </param>
/// <param name="b">
/// A <see cref="HalfFloat"/> that specify the blue component.
/// </param>
public ColorRGBAHF(HalfFloat r, HalfFloat g, HalfFloat b) :
this(r, g, b, (HalfFloat)1.0f)
{
}
