/// <summary>
/// </summary>
/// <author> Birthe Anne Wiegand</author>
private void KonvertierenButton_Click(object sender, EventArgs e)
{
RadioButton checkedButton = this.tabFarbRechner.Controls.OfType<RadioButton>().FirstOrDefault(radioButton => radioButton.Checked);
switch (checkedButton.Name)
{
case "customRGB":
// parse input to internal customRGBvalue
customRGBvalue.R = float.Parse(customRGB_R.Text, CultureInfo.InvariantCulture);
customRGBvalue.G = float.Parse(customRGB_G.Text, CultureInfo.InvariantCulture);
customRGBvalue.B = float.Parse(customRGB_B.Text, CultureInfo.InvariantCulture);
// update other internal values
XYZvalue = customRGBvalue.asXYZ();
RGBvalue = XYZvalue.asRGB();
sRGBvalue = RGBvalue.as_sRGB();
HSLvalue = RGBvalue.asHSL();
HSVvalue = RGBvalue.asHSV();
LUVvalue = XYZvalue.asLUV();
LABvalue = XYZvalue.asLAB();
break;
case "sRGB":
// parse input to internal customRGBvalue
sRGBvalue.R = float.Parse(sRGB_R.Text, CultureInfo.InvariantCulture);
sRGBvalue.G = float.Parse(sRGB_G.Text, CultureInfo.InvariantCulture);
sRGBvalue.B = float.Parse(sRGB_B.Text, CultureInfo.InvariantCulture);
// update other internal values
RGBvalue = sRGBvalue.asRGB();
XYZvalue = RGBvalue.asXYZ();
customRGBvalue = XYZvalue.as_customRGB();
HSLvalue = RGBvalue.asHSL();
HSVvalue = RGBvalue.asHSV();
LUVvalue = XYZvalue.asLUV();
LABvalue = XYZvalue.asLAB();
break;
case "HSL":
// parse input to internal HSLvalue
HSLvalue.H = float.Parse(HSL_H.Text, CultureInfo.InvariantCulture);
HSLvalue.S = float.Parse(HSL_S.Text, CultureInfo.InvariantCulture);
HSLvalue.L = float.Parse(HSL_L.Text, CultureInfo.InvariantCulture);
// update other internal values
RGBvalue = HSLvalue.asRGB();
XYZvalue = RGBvalue.asXYZ();
customRGBvalue = XYZvalue.as_customRGB();
sRGBvalue = RGBvalue.as_sRGB();
HSVvalue = RGBvalue.asHSV();
LUVvalue = XYZvalue.asLUV();
LABvalue = XYZvalue.asLAB();
break;
case "HSV":
// parse input to internal HSVvalue
HSVvalue.H = float.Parse(HSV_H.Text, CultureInfo.InvariantCulture);
HSVvalue.S = float.Parse(HSV_S.Text, CultureInfo.InvariantCulture);
HSVvalue.V = float.Parse(HSV_V.Text, CultureInfo.InvariantCulture);
// update other internal values
RGBvalue = HSVvalue.asRGB();
XYZvalue = RGBvalue.asXYZ();
customRGBvalue = XYZvalue.as_customRGB();
sRGBvalue = RGBvalue.as_sRGB();
HSLvalue = RGBvalue.asHSL();
LUVvalue = XYZvalue.asLUV();
LABvalue = XYZvalue.asLAB();
break;
case "XYZ":
// parse input to internal HSVvalue
XYZvalue.X = float.Parse(XYZ_X.Text, CultureInfo.InvariantCulture);
XYZvalue.Y = float.Parse(XYZ_Y.Text, CultureInfo.InvariantCulture);
XYZvalue.Z = float.Parse(XYZ_Z.Text, CultureInfo.InvariantCulture);
// update other internal values
RGBvalue = XYZvalue.asRGB();
customRGBvalue = XYZvalue.as_customRGB();
sRGBvalue = RGBvalue.as_sRGB();
HSLvalue = RGBvalue.asHSL();
HSVvalue = RGBvalue.asHSV();
LUVvalue = XYZvalue.asLUV(ColorHelper.WP_used);
LABvalue = XYZvalue.asLAB(ColorHelper.WP_used);
break;
case "LUV":
// parse input to internal LUVvalue
LUVvalue.L = float.Parse(LUV_L.Text, CultureInfo.InvariantCulture);
LUVvalue.U = float.Parse(LUV_U.Text, CultureInfo.InvariantCulture);
LUVvalue.V = float.Parse(LUV_V.Text, CultureInfo.InvariantCulture);
// update other internal values
XYZvalue = LUVvalue.asXYZ(ColorHelper.WP_used);
RGBvalue = XYZvalue.asRGB();
customRGBvalue = XYZvalue.as_customRGB();
sRGBvalue = RGBvalue.as_sRGB();
HSLvalue = RGBvalue.asHSL();
HSVvalue = RGBvalue.asHSV();
LABvalue = XYZvalue.asLAB(ColorHelper.WP_used);
break;
case "LAB":
// parse input to internal LABvalue
LABvalue.L = float.Parse(LAB_L.Text, CultureInfo.InvariantCulture);
LABvalue.A = float.Parse(LAB_A.Text, CultureInfo.InvariantCulture);
LABvalue.B = float.Parse(LAB_B.Text, CultureInfo.InvariantCulture);
// update other internal values
XYZvalue = LABvalue.asXYZ(ColorHelper.WP_used);
RGBvalue = XYZvalue.asRGB();
customRGBvalue = XYZvalue.as_customRGB();
sRGBvalue = RGBvalue.as_sRGB();
HSLvalue = RGBvalue.asHSL();
HSVvalue = RGBvalue.asHSV();
LUVvalue = XYZvalue.asLUV(ColorHelper.WP_used);
break;
}
UpdateBoxes();
}
/// <summary>
/// </summary>
/// <author> Birthe Anne Wiegand</author>
private void ResetColorValues()
{
// set color values to 0
RGBvalue = new RGB();
customRGBvalue = new customRGB();
sRGBvalue = new sRGB();
HSLvalue = new HSL();
HSVvalue = new HSV();
XYZvalue = new XYZ();
LUVvalue = new LUV();
LABvalue = new LAB();
UpdateBoxes();
}
/// <summary>
/// transformatin CIE XYZ -> CIE L*a*b*
/// source: http://en.wikipedia.org/wiki/CIELUV
/// </summary>
/// <author>Birthe Anne Wiegand</author>
/// <returns>L*u*v* value</returns>
public LUV asLUV(XYZ WP)
{
LUV temp = new LUV();
float XXn = this.X / WP.X; // X / Xn
float YYn = this.Y / WP.Y; // Y / Yn
float ZZn = this.Z / WP.Z; // Z / Zn
if (YYn <= 0.008856452)
{
temp.L = 903.2962963f * YYn;
}
else
{
temp.L = 116f * (float)Math.Pow(YYn, (1f / 3f)) - 16;
}
temp.U = 13f * temp.L * (ColorHelper.function_XYZ_to_LUV(this)[0] - ColorHelper.function_XYZ_to_LUV(WP)[0]);
temp.V = 13f * temp.L * (ColorHelper.function_XYZ_to_LUV(this)[1] - ColorHelper.function_XYZ_to_LUV(WP)[1]);
// to catch the otherwise occuring exception for (input.X + 15f * input.Y + 3f * input.Z) = 0
// (ColorHelper.function_XYZ_to_LUV divides by zero if (input.X + 15f * input.Y + 3f * input.Z) = 0)
// u* and v* are given the value 0 just for interface clarity as there is no information given about them.
// (so 0 is as good as any other value, but does not imply anything wrong)
if (float.IsNaN(temp.U)) temp.U = 0f;
if (float.IsNaN(temp.V)) temp.V = 0f;
return temp;
}