private void CalcCoordsAndUpdate(DRColor.HSV HSV)
{
// Convert color to real-world coordinates and then calculate
// the various points. HSV.Hue represents the degrees (0 to 360),
// HSV.Saturation represents the radius_norm.
// This procedure doesn't draw anything--it simply
// updates class-level variables. The UpdateDisplay
// procedure uses these values to update the screen.
// Given the angle (HSV.Hue), and distance from
// the center (HSV.Saturation), and the center,
// calculate the point corresponding to
// the selected color, on the color wheel.
colorPoint = GetPoint((double)HSV.Hue / 255 * 360,
(double)HSV.Saturation / 255 * radius,
centerPoint);
// Given the brightness (HSV.value), calculate the
// point corresponding to the brightness indicator.
brightnessPoint = CalcBrightnessPoint(HSV.Value);
// Store information about the selected color.
brightness = HSV.Value;
selectedColor = DRColor.HSVtoColor(HSV);
RGB = new DRColor.RGB(HSV);
// The full color is the same as HSV, except that the
// brightness is set to full (255). This is the top-most
// color in the brightness gradient.
fullColor = DRColor.HSVtoColor(new DRColor.HSV(HSV.Hue, HSV.Saturation, 255));
}
public void Draw(Graphics g, DRColor.HSV HSV)
{
// Given HSV values, update the screen.
this._g = g;
this.HSV = HSV;
CalcCoordsAndUpdate(this.HSV);
UpdateDisplay();
}
public void Draw(Graphics g, DRColor.RGB RGB)
{
// Given RGB values, calculate HSV and then update the screen.
this._g = g;
this.HSV = new DRColor.HSV(RGB);
CalcCoordsAndUpdate(this.HSV);
UpdateDisplay();
}
public void Animate()
{
// Color Generation
DRColor.HSV color_gen = _huey.getNextColor((float)Slider1Value, (float)Slider2Value, (float)Slider3Value);
DRColor.RGB new_color = new DRColor.RGB(color_gen);
// Position Generation
Rainbow.Kai[23] = new_color;
Rainbow.Kai[24] = new_color;
Push();
RainbowUtils.update();
Thread.Sleep(refreshRate);
}
public static DRColor.RGB increaseBrightness(DRColor.RGB rgb, int amt)
{
DRColor.HSV hsv = new DRColor.HSV(rgb);
hsv.Value = hsv.Value + amt > 256 ? 256 : hsv.Value + amt;
return(new DRColor.RGB(hsv));
}
private DRColor.RGB AdjustVal(DRColor.RGB rgb, double perc)
{
DRColor.HSV hsv = new DRColor.HSV(rgb);
hsv.Value = (int)(hsv.Value * perc);
return new DRColor.RGB(hsv);
}
public RGB(DRColor.HSV hsv)
{
if (hsv == null)
{
_red = 0;
_green = 0;
_blue = 0;
return;
}
// HSV contains values scaled as in the color wheel:
// that is, all from 0 to 128.
// for ( this code to work, HSV.Hue needs
// to be scaled from 0 to 360 (it//s the angle of the selected
// point within the circle). HSV.Saturation and HSV.value must be
// scaled to be between 0 and 1.
double h;
double s;
double v;
double r = 0;
double g = 0;
double b = 0;
// Scale Hue to be between 0 and 360. Saturation
// and value scale to be between 0 and 1.
h = ((double)hsv.Hue / 255 * 360) % 360;
s = (double)hsv.Saturation / 255;
v = (double)hsv.Value / 255;
if (s == 0)
{
// If s is 0, all colors are the same.
// This is some flavor of gray.
r = v;
g = v;
b = v;
}
else
{
double p;
double q;
double t;
double fractionalSector;
int sectorNumber;
double sectorPos;
// The color wheel consists of 6 sectors.
// Figure out which sector you//re in.
sectorPos = h / 60;
sectorNumber = (int)(Math.Floor(sectorPos));
// get the fractional part of the sector.
// That is, how many degrees into the sector
// are you?
fractionalSector = sectorPos - sectorNumber;
// Calculate values for the three axes
// of the color.
p = v * (1 - s);
q = v * (1 - (s * fractionalSector));
t = v * (1 - (s * (1 - fractionalSector)));
// Assign the fractional colors to radius_norm, _g, and b
// based on the sector the angle is in.
switch (sectorNumber)
{
case 0:
r = v;
g = t;
b = p;
break;
case 1:
r = q;
g = v;
b = p;
break;
case 2:
r = p;
g = v;
b = t;
break;
case 3:
r = p;
g = q;
b = v;
break;
case 4:
r = t;
g = p;
b = v;
break;
case 5:
r = v;
g = p;
b = q;
break;
}
}
// return an RGB structure, with values scaled
// to be between 0 and 255.
this.setRed((int)(r * 128));
this.setGreen((int)(g * 128));
this.setBlue((int)(b * 128));
}
public static DRColor.RGB increaseBrightness(DRColor.RGB rgb, int amt)
{
DRColor.HSV hsv = new DRColor.HSV(rgb);
hsv.Value = hsv.Value + amt > 256 ? 256 : hsv.Value + amt;
return new DRColor.RGB(hsv);
}
public ColorWheel(Rectangle colorRectangle, Rectangle brightnessRectangle, Rectangle selectedColorRectangle, DRColor.HSV default_color)
{
// Caller must provide locations for color wheel
// (colorRectangle), brightness "strip" (brightnessRectangle)
// and location to display selected color (selectedColorRectangle).
using (GraphicsPath path = new GraphicsPath())
{
// Store away locations for later use.
this.colorRectangle = colorRectangle;
this.brightnessRectangle = brightnessRectangle;
this.selectedColorRectangle = selectedColorRectangle;
// Calculate the center of the circle.
// Start with the location, then offset
// the point by the radius_norm.
// Use the smaller of the width and height of
// the colorRectangle value.
this.radius = (int)Math.Min(colorRectangle.Width, colorRectangle.Height) / 2;
this.centerPoint = colorRectangle.Location;
this.centerPoint.Offset(radius, radius);
// Start the pointer in the center.
this.colorPoint = this.centerPoint;
// Create angle region corresponding to the color circle.
// Code uses this later to determine if angle specified
// point is within the region, using the IsVisible
// method.
path.AddEllipse(colorRectangle);
_colorRegion = new Region(path);
// set { the range for the brightness selector.
this.brightnessMin = this.brightnessRectangle.Top;
this.brightnessMax = this.brightnessRectangle.Bottom;
// Create angle region corresponding to the
// brightness rectangle, with angle little extra
// "breathing room".
path.AddRectangle(new Rectangle(brightnessRectangle.Left, brightnessRectangle.Top - 10, brightnessRectangle.Width + 10, brightnessRectangle.Height + 20));
// Create region corresponding to brightness
// rectangle. Later code uses this to
// determine if angle specified point is within
// the region, using the IsVisible method.
_brightnessRegion = new Region(path);
// Set the location for the brightness indicator "marker".
// Also calculate the scaling factor, scaling the height
// to be between 0 and 255.
brightnessX = brightnessRectangle.Left + brightnessRectangle.Width;
brightnessScaling = (double)255 / (brightnessMax - brightnessMin);
// Calculate the location of the brightness
// pointer. Assume it's at the highest position.
brightnessPoint = new Point(brightnessX, brightnessMax);
// Create the bitmap that contains the circular gradient.
CreateGradient();
CalcCoordsAndUpdate(default_color);
}
}
public ColorChangedEventArgs(DRColor.RGB RGB, DRColor.HSV HSV)
{
mRGB = RGB;
mHSV = HSV;
}
protected void OnColorChanged(DRColor.RGB RGB, DRColor.HSV HSV)
{
ColorChangedEventArgs e = new ColorChangedEventArgs(RGB, HSV);
ColorChanged(this, e);
}
private DRColor.RGB AdjustVal(DRColor.RGB rgb, double perc)
{
DRColor.HSV hsv = new DRColor.HSV(rgb);
hsv.Value = (int)(hsv.Value * perc);
return(new DRColor.RGB(hsv));
}
// If the H, S, or V values change, use this
// code to update the RGB values and invalidate
// the color wheel (so it updates the pointers).
// Check the isInUpdate flag to avoid recursive events
// when you update the NumericUpdownControls.
private void HandleHSVScroll(object sender, ScrollEventArgs e)
{
_changeType = ChangeStyle.HSV;
HSV = new DRColor.HSV(hsbHue.Value, hsbSaturation.Value, hsbBrightness.Value);
SetRGB(new DRColor.RGB(HSV));
SetHSVLabels(HSV);
this.Invalidate();
RainbowUtils.fillBoth(RGB);
}
private void ColorChooser_Load(object sender, System.EventArgs e)
{
DRColor.HSV default_color = new DRColor.HSV(127, 256, 82);
// Turn on double-buffering, so the form looks better.
this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
this.SetStyle(ControlStyles.UserPaint, true);
this.SetStyle(ControlStyles.DoubleBuffer, true);
// These properties are set in design view, as well, but they
// have to be set to false in order for the Paint
// event to be able to display their contents.
// Never hurts to make sure they're invisible.
pnlSelectedColor.Visible = false;
pnlBrightness.Visible = false;
pnlColor.Visible = false;
// Calculate the coordinates of the three
// required regions on the form.
Rectangle SelectedColorRectangle = new Rectangle(pnlSelectedColor.Location, pnlSelectedColor.Size);
Rectangle BrightnessRectangle = new Rectangle(pnlBrightness.Location, pnlBrightness.Size);
Rectangle ColorRectangle = new Rectangle(pnlColor.Location, pnlColor.Size);
// Create the new ColorWheel class, indicating
// the locations of the color wheel itself, the
// brightness area, and the position of the selected color.
myColorWheel = new ColorWheel(ColorRectangle, BrightnessRectangle, SelectedColorRectangle, default_color);
myColorWheel.ColorChanged += new ColorWheel.ColorChangedEventHandler(this.colorWheel_Changed);
// Set the RGB and HSV values
// of the NumericUpDown controls.
SetRGB(new DRColor.RGB(default_color));
SetHSV(default_color);
}
public void Draw(Graphics g, DRColor.HSV HSV)
{
// Given HSV values, update the screen.
this._g = g;
this.HSV = HSV;
CalcCoordsAndUpdate(this.HSV);
UpdateDisplay();
}
public void Draw(Graphics g, DRColor.RGB RGB)
{
// Given RGB values, calculate HSV and then update the screen.
this._g = g;
this.HSV = new DRColor.HSV(RGB);
CalcCoordsAndUpdate(this.HSV);
UpdateDisplay();
}
public ColorChangedEventArgs(DRColor.RGB RGB, DRColor.HSV HSV)
{
mRGB = RGB;
mHSV = HSV;
}
