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add HSL calculations and other color mixing functions

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This commit is contained in:
Michael Becker 2020-05-29 18:12:30 -04:00
parent 6a386935fa
commit 73b696fc3f
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GPG Key ID: 506F54899E2BFED7
1 changed files with 21 additions and 114 deletions
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135
MBS.Framework/Drawing/Color.cs
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@ -181,29 +181,13 @@ namespace MBS.Framework.Drawing
return ToHexadecimalHTML(); return ToHexadecimalHTML();
} }
/*private double mvarRed;
public double Red { get { return mvarRed; } set { mvarRed = value; } }
public int RedInt32 { get { return (int)(mvarRed * 255); } set { mvarRed = (double)value / 255.0; } }
private double mvarGreen;
public double Green { get { return mvarGreen; } set { mvarGreen = value; } }
public int GreenInt32 { get { return (int)(mvarGreen * 255); } set { mvarGreen = (double)value / 255.0; } }
private double mvarBlue;
public double Blue { get { return mvarBlue; } set { mvarBlue = value; } }
public int BlueInt32 { get { return (int)(mvarBlue * 255); } set { mvarBlue = (double)value / 255.0; } }
private double mvarAlpha;
public double Alpha { get { return mvarAlpha; } set { mvarAlpha = value; } }
public int AlphaInt32 { get { return (int)(mvarAlpha * 255); } set { mvarAlpha = (double)value / 255.0; } }
public double Hue public double Hue
{ {
get get
{ {
int r = this.RedInt32; int r = this.GetRedByte();
int g = this.GreenInt32; int g = this.GetGreenByte();
int b = this.BlueInt32; int b = this.GetBlueByte();
byte minRGB = (byte)Math.Min (r, Math.Min (g, b)); byte minRGB = (byte)Math.Min (r, Math.Min (g, b));
byte maxRGB = (byte)Math.Max (r, Math.Max (g, b)); byte maxRGB = (byte)Math.Max (r, Math.Max (g, b));
@ -243,8 +227,8 @@ namespace MBS.Framework.Drawing
{ {
get get
{ {
int minRGB = Math.Min (this.RedInt32, Math.Min (this.GreenInt32, this.BlueInt32)); int minRGB = Math.Min (this.GetRedByte(), Math.Min (this.GetGreenByte(), this.GetBlueByte()));
int maxRGB = Math.Max (this.RedInt32, Math.Max (this.GreenInt32, this.BlueInt32)); int maxRGB = Math.Max (this.GetRedByte(), Math.Max (this.GetGreenByte(), this.GetBlueByte()));
if (maxRGB == minRGB) return 0.0; if (maxRGB == minRGB) return 0.0;
int num = (int)(maxRGB + minRGB); int num = (int)(maxRGB + minRGB);
@ -265,8 +249,8 @@ namespace MBS.Framework.Drawing
{ {
get get
{ {
int minRGB = Math.Min (this.RedInt32, Math.Min (this.GreenInt32, this.BlueInt32)); int minRGB = Math.Min (this.GetRedByte(), Math.Min (this.GetGreenByte(), this.GetBlueByte()));
int maxRGB = Math.Max (this.RedInt32, Math.Max (this.GreenInt32, this.BlueInt32)); int maxRGB = Math.Max (this.GetRedByte(), Math.Max (this.GetGreenByte(), this.GetBlueByte()));
return (double)((double)(maxRGB + minRGB) / 510.0) / HSL_SCALE; return (double)((double)(maxRGB + minRGB) / 510.0) / HSL_SCALE;
} }
set { UpdateHSL (Hue, Saturation, value); } set { UpdateHSL (Hue, Saturation, value); }
@ -282,22 +266,22 @@ namespace MBS.Framework.Drawing
if (l != 0) if (l != 0)
{ {
if (s == 0) if (s == 0)
mvarRed = mvarGreen = mvarBlue = l; R = G = B = l;
else else
{ {
double temp2 = GetTemp2(h, s, l); double temp2 = GetTemp2(h, s, l);
double temp1 = 2.0 * l - temp2; double temp1 = 2.0 * l - temp2;
mvarRed = GetColorComponent(temp1, temp2, h + 1.0 / 3.0); R = GetColorComponent(temp1, temp2, h + 1.0 / 3.0);
mvarGreen = GetColorComponent(temp1, temp2, h); G = GetColorComponent(temp1, temp2, h);
mvarBlue = GetColorComponent(temp1, temp2, h - 1.0 / 3.0); B = GetColorComponent(temp1, temp2, h - 1.0 / 3.0);
} }
} }
else else
{ {
mvarRed = 0.0; R = 0.0;
mvarGreen = 0.0; G = 0.0;
mvarBlue = 0.0; B = 0.0;
} }
} }
@ -333,7 +317,7 @@ namespace MBS.Framework.Drawing
b = GetColorComponent(temp1, temp2, h - 1.0 / 3.0); b = GetColorComponent(temp1, temp2, h - 1.0 / 3.0);
} }
} }
return Color.FromRGBA((int)(255 * r), (int)(255 * g), (int)(255 * b)); return Color.FromRGBAInt32((int)(255 * r), (int)(255 * g), (int)(255 * b));
} }
private static double GetColorComponent(double temp1, double temp2, double temp3) private static double GetColorComponent(double temp1, double temp2, double temp3)
@ -366,14 +350,12 @@ namespace MBS.Framework.Drawing
return temp2; return temp2;
} }
public static readonly Color Empty;
public override bool Equals(object obj) public override bool Equals(object obj)
{ {
if (obj is Color) if (obj is Color)
{ {
Color color = (Color)obj; Color color = (Color)obj;
return ((mvarRed == color.mvarRed) && (mvarGreen == color.mvarGreen) && (mvarBlue == color.mvarBlue) && (mvarAlpha == color.mvarAlpha)); return ((R == color.R) && (G == color.G) && (B == color.B) && (A == color.A));
} }
return false; return false;
} }
@ -382,43 +364,6 @@ namespace MBS.Framework.Drawing
return base.GetHashCode(); return base.GetHashCode();
} }
public static Color FromRGBA(double red, double green, double blue, double alpha = 1.0)
{
Color color = new Color();
color.Red = red;
color.Green = green;
color.Blue = blue;
color.Alpha = alpha;
return color;
}
public static Color FromRGBA(float red, float green, float blue, float alpha = 1.0f)
{
Color color = new Color();
color.Red = red;
color.Green = green;
color.Blue = blue;
color.Alpha = alpha;
return color;
}
public static Color FromRGBA(byte red, byte green, byte blue, byte alpha = 255)
{
Color color = new Color();
color.Red = ((double)red / 255);
color.Green = ((double)green / 255);
color.Blue = ((double)blue / 255);
color.Alpha = ((double)alpha / 255);
return color;
}
public static Color FromRGBA(int red, int green, int blue, int alpha = 255)
{
Color color = new Color();
color.Red = ((double)red / 255);
color.Green = ((double)green / 255);
color.Blue = ((double)blue / 255);
color.Alpha = ((double)alpha / 255);
return color;
}
public int CompareTo(Color other) public int CompareTo(Color other)
{ {
int thisVal = ToInt32(); int thisVal = ToInt32();
@ -435,49 +380,6 @@ namespace MBS.Framework.Drawing
return !left.Equals(right); return !left.Equals(right);
} }
public static Color FromString(string value)
{
if (value.StartsWith("#"))
{
// hex string
value = value.Substring(1);
string rr = value.Substring(0, 2);
string gg = value.Substring(2, 2);
string bb = value.Substring(4, 2);
byte r = Byte.Parse(rr, System.Globalization.NumberStyles.HexNumber);
byte g = Byte.Parse(gg, System.Globalization.NumberStyles.HexNumber);
byte b = Byte.Parse(bb, System.Globalization.NumberStyles.HexNumber);
return Color.FromRGBA(r, g, b);
}
return Color.Empty;
}
*/
public override bool Equals(object obj)
{
Color c = (Color)obj;
try
{
return (c.R == R && c.G == G && c.B == B && c.A == A);
}
catch (Exception ex)
{
}
return base.Equals(obj);
}
public static bool operator ==(Color left, Color right)
{
return left.Equals(right);
}
public static bool operator !=(Color left, Color right)
{
return !left.Equals(right);
}
// https://stackoverflow.com/questions/6615002/given-an-rgb-value-how-do-i-create-a-tint-or-shade // https://stackoverflow.com/questions/6615002/given-an-rgb-value-how-do-i-create-a-tint-or-shade
public Color Lighten(double factor) public Color Lighten(double factor)
{ {
@ -510,5 +412,10 @@ namespace MBS.Framework.Drawing
{ {
return Darken(factor); return Darken(factor);
} }
public Color ToBlackAndWhite()
{
return Color.FromHSL(this.Hue < 0.5 ? 0 : 1, this.Saturation, this.Luminosity);
}
} }
} }