private static JSColor FromValue(string p)
{
JSColor c = new JSColor();
c.Value = p;
return(c);
}
public static JSColor FromRGB(byte r, byte g, byte b)
{
JSColor n = new JSColor();
n.R = r;
n.G = g;
n.B = b;
return(n);
}
/// <summary>
/// returns color by HLS
/// </summary>
/// <param name="h">up to 240</param>
/// <param name="l">up to 120</param>
/// <param name="s">up to 240</param>
/// <returns></returns>
public static JSColor FromHLS(byte h, byte l, byte s)
{
JSColor n = new JSColor();
n.H = h;
n.L = l;
n.S = s;
n.isHLS = true;
return(n);
}
public override string ToString()
{
JSColor z = this;
if (z.Value != null)
{
return(z.Value);
}
if (z.isHLS)
{
z = z.ToRGB();
}
return("RGB(" + z.R + ", " + z.G + ", " + z.B + ")");
}
public JSColor ToRGB()
{
JSColor c = new JSColor();
if (this.S == 0)
{
/* achromatic case */
// compiler bug: multiple assignments not supported
var v = (byte)((this.L * RGBMAX) / HLSMAX);
c.R = v;
c.G = v;
c.B = v;
if (this.H != UNDEFINED)
{
/* ERROR */
}
}
else
{ /* chromatic case */
int Magic1, Magic2;
/* set up magic numbers */
if (this.L <= (HLSMAX / 2))
{
Magic2 = (this.L * (HLSMAX + this.S) + (HLSMAX / 2)) / HLSMAX;
}
else
{
Magic2 = this.L + this.S - ((this.L * this.S) + (HLSMAX / 2)) / HLSMAX;
}
Magic1 = 2 * this.L - Magic2;
/* get RGB, change units from HLSMAX to RGBMAX */
c.R = global::System.Convert.ToByte((HueToRGB(Magic1, Magic2, this.H + (HLSMAX / 3)) * RGBMAX + (HLSMAX / 2)) / HLSMAX);
c.G = global::System.Convert.ToByte((HueToRGB(Magic1, Magic2, this.H) * RGBMAX + (HLSMAX / 2)) / HLSMAX);
c.B = global::System.Convert.ToByte((HueToRGB(Magic1, Magic2, this.H - (HLSMAX / 3)) * RGBMAX + (HLSMAX / 2)) / HLSMAX);
}
return(c);
}
public static JSColor FromRGB(byte r, byte g, byte b)
{
JSColor n = new JSColor();
n.R = r;
n.G = g;
n.B = b;
return n;
}
/// <summary>
/// returns color by HLS
/// </summary>
/// <param name="h">up to 240</param>
/// <param name="l">up to 120</param>
/// <param name="s">up to 240</param>
/// <returns></returns>
public static JSColor FromHLS(byte h, byte l, byte s)
{
JSColor n = new JSColor();
n.H = h;
n.L = l;
n.S = s;
n.isHLS = true;
return n;
}
public JSColor ToHLS()
{
JSColor c = new JSColor();
c.isHLS = true;
int cMax = Native.Math.max(Native.Math.max(R, G), B);
int cMin = Native.Math.min(Native.Math.min(R, G), B);
int H, L, S;
L = (((cMax + cMin) * HLSMAX) + RGBMAX) / (2 * RGBMAX);
if (cMax == cMin)
{ /* r=g=b --> achromatic case */
S = 0; /* saturation */
H = UNDEFINED; /* hue */
}
else
{
/* saturation */
if (L <= (HLSMAX / 2))
S = (((cMax - cMin) * HLSMAX) + ((cMax + cMin) / 2)) / (cMax + cMin);
else
S = (((cMax - cMin) * HLSMAX) + ((2 * RGBMAX - cMax - cMin) / 2))
/ (2 * RGBMAX - cMax - cMin);
/* hue */
int Rdelta = (((cMax - R) * (HLSMAX / 6)) + ((cMax - cMin) / 2)) / (cMax - cMin);
int Gdelta = (((cMax - G) * (HLSMAX / 6)) + ((cMax - cMin) / 2)) / (cMax - cMin);
int Bdelta = (((cMax - B) * (HLSMAX / 6)) + ((cMax - cMin) / 2)) / (cMax - cMin);
if (R == cMax)
H = Bdelta - Gdelta;
else if (G == cMax)
H = (HLSMAX / 3) + Rdelta - Bdelta;
else /* B == cMax */
H = ((2 * HLSMAX) / 3) + Gdelta - Rdelta;
if (H < 0)
H += HLSMAX;
if (H > HLSMAX)
H -= HLSMAX;
}
c.H = Convert.ToByte(H);
c.L = Convert.ToByte(L);
c.S = Convert.ToByte(S);
return c;
}
public JSColor ToRGB()
{
JSColor c = new JSColor();
if (this.S == 0)
{
/* achromatic case */
// compiler bug: multiple assignments not supported
var v = (byte)((this.L * RGBMAX) / HLSMAX);
c.R = v;
c.G = v;
c.B = v;
if (this.H != UNDEFINED)
{
/* ERROR */
}
}
else
{ /* chromatic case */
int Magic1, Magic2;
/* set up magic numbers */
if (this.L <= (HLSMAX / 2))
Magic2 = (this.L * (HLSMAX + this.S) + (HLSMAX / 2)) / HLSMAX;
else
Magic2 = this.L + this.S - ((this.L * this.S) + (HLSMAX / 2)) / HLSMAX;
Magic1 = 2 * this.L - Magic2;
/* get RGB, change units from HLSMAX to RGBMAX */
c.R = global::System.Convert.ToByte((HueToRGB(Magic1, Magic2, this.H + (HLSMAX / 3)) * RGBMAX + (HLSMAX / 2)) / HLSMAX);
c.G = global::System.Convert.ToByte((HueToRGB(Magic1, Magic2, this.H) * RGBMAX + (HLSMAX / 2)) / HLSMAX);
c.B = global::System.Convert.ToByte((HueToRGB(Magic1, Magic2, this.H - (HLSMAX / 3)) * RGBMAX + (HLSMAX / 2)) / HLSMAX);
}
return c;
}
private static JSColor FromValue(string p)
{
JSColor c = new JSColor();
c.Value = p;
return c;
}
public JSColor ToHLS()
{
JSColor c = new JSColor();
c.isHLS = true;
int cMax = Native.Math.max(Native.Math.max(R, G), B);
int cMin = Native.Math.min(Native.Math.min(R, G), B);
int H, L, S;
L = (((cMax + cMin) * HLSMAX) + RGBMAX) / (2 * RGBMAX);
if (cMax == cMin)
{ /* r=g=b --> achromatic case */
S = 0; /* saturation */
H = UNDEFINED; /* hue */
}
else
{
/* saturation */
if (L <= (HLSMAX / 2))
{
S = (((cMax - cMin) * HLSMAX) + ((cMax + cMin) / 2)) / (cMax + cMin);
}
else
{
S = (((cMax - cMin) * HLSMAX) + ((2 * RGBMAX - cMax - cMin) / 2))
/ (2 * RGBMAX - cMax - cMin);
}
/* hue */
int Rdelta = (((cMax - R) * (HLSMAX / 6)) + ((cMax - cMin) / 2)) / (cMax - cMin);
int Gdelta = (((cMax - G) * (HLSMAX / 6)) + ((cMax - cMin) / 2)) / (cMax - cMin);
int Bdelta = (((cMax - B) * (HLSMAX / 6)) + ((cMax - cMin) / 2)) / (cMax - cMin);
if (R == cMax)
{
H = Bdelta - Gdelta;
}
else if (G == cMax)
{
H = (HLSMAX / 3) + Rdelta - Bdelta;
}
else /* B == cMax */
{
H = ((2 * HLSMAX) / 3) + Gdelta - Rdelta;
}
if (H < 0)
{
H += HLSMAX;
}
if (H > HLSMAX)
{
H -= HLSMAX;
}
}
c.H = Convert.ToByte(H);
c.L = Convert.ToByte(L);
c.S = Convert.ToByte(S);
return(c);
}
