void SetIconFor(StarInfoDB db)
{
//TODO: change pen colour depending on star temp and lum?
double temp = db.Temperature;
double lum = db.Luminosity;
Pen starPen = new Pen(Colors.DarkOrange);
float width = 8;
float height = 8;
float hw = width * 0.25f;
float hh = height * 0.25f;
GraphicsPath starPath = new GraphicsPath();
PointF start = new PointF(0, -height);
PointF end = new PointF(-width, 0);
PointF c1 = new PointF(-hw, -hh);
PointF c2 = new PointF(-hw, -hh);
starPath.AddBezier(start, c1, c2, end);
start = new PointF(-width, 0);
end = new PointF(0, height);
c1 = new PointF(-hw, hh);
c2 = new PointF(-hw, hh);
starPath.AddBezier(start, c1, c2, end);
start = new PointF(0, height);
end = new PointF(width, 0);
c1 = new PointF(hw, hh);
c2 = new PointF(hw, hh);
starPath.AddBezier(start, c1, c2, end);
start = new PointF(width, 0);
end = new PointF(0, -height);
c1 = new PointF(hw, -hh);
c2 = new PointF(hw, -hh);
starPath.AddBezier(start, c1, c2, end);
PenPathPair starPathPair = new PenPathPair()
{
Pen = starPen, Path = starPath
};
_shapes.Add(starPathPair);
}
private void StarSetup(StarInfoDB starInfo)
{
switch (starInfo.SpectralType)
{
case SpectralType.A:
{
ItemTextureName = DEFAULT_PLANET_ICON;
}
break;
default:
{
ItemTextureName = DEFAULT_PLANET_ICON;
}
break;
}
double maxTempValue = 60000; //todo get this from game settings?
double divisor = maxTempValue / 255;
byte temp = Convert.ToByte(starInfo.Temperature / divisor);
ItemColour = new Color4(temp, 100 - temp, 0, 0);//stab in the dark.
}
public StarIcon(Entity entity) : base(entity.GetDataBlob <PositionDB>())
{
StarInfoDB starInfo = entity.GetDataBlob <StarInfoDB>();
_tempK = starInfo.Temperature + 273.15;
var massVol = entity.GetDataBlob <MassVolumeDB>();
_bodyRadiusAU = massVol.Radius;
double calcTemp = GMath.Clamp(_tempK, 1000, 40000);
calcTemp = calcTemp / 100;
//Red
if (calcTemp <= 660)
{
_color.r = 255;
}
else
{
_color.r = (byte)(329.698727446 * Math.Pow(calcTemp - 60, -0.1332047592));
}
//Green
if (calcTemp <= 66)
{
_color.g = (byte)(99.4708025861 * Math.Log(calcTemp) - 161.1195681661);
}
else
{
_color.g = (byte)(288.1221695283 * Math.Pow(calcTemp - 60, -0.0755148492));
}
//Blue
if (calcTemp >= 66)
{
_color.b = 255;
}
else if (calcTemp <= 19)
{
_color.b = 0;
}
else
{
_color.b = (byte)(138.5177312231 * Math.Log(calcTemp - 10) - 305.0447927307);
}
_color.a = 255;
byte spikes = (byte)(starInfo.SpectralType + 4);
float spikeheight = 100;
float spikeDepth = 50;
double arc = (2 * Math.PI) / spikes;
double startAngle = 1.5708 - arc / 2;
List <PointD> shapePoints = new List <PointD>();
for (int i = 0; i < spikes; i++)
{
var a1 = arc * i;
double x1 = (0 * Math.Cos(a1) - spikeheight * Math.Sin(a1));
double y1 = (0 * Math.Sin(a1) + spikeheight * Math.Cos(a1));
var p1 = new PointD()
{
X = x1, Y = y1
};
var a2 = a1 + arc * 0.5;
double x2 = (0 * Math.Cos(a2) - spikeDepth * Math.Sin(a2));
double y2 = (0 * Math.Sin(a2) + spikeDepth * Math.Cos(a2));
var p2 = new PointD()
{
X = x2, Y = y2
};
shapePoints.Add(p1);
shapePoints.Add(p2);
/*
* this was an attempt at making slightly nicer looking stars using an elipsed curve instead of just straight lines. couldnt get it working though
* the idea was make an arc, then rotate it.
* List<SDL.SDL_Point> points = new List<SDL.SDL_Point>();
* points.AddRange(CreatePrimitiveShapes.CreateArc(32, 0, 32 - spikeDepth, 32 + spikeDepth, startAngle, arc, 32)); //32 segments is probilby way overkill maybe adjust this by the camera zoom level?
* //rotate it at i * arc;
* var a = arc * i;
* for (int i2 = 0; i2 < points.Count; i2++)
* {
* int x = (int)(points[i2].x * Math.Cos(a) - points[i2].y * Math.Sin(a));
* int y = (int)(points[i2].x * Math.Sin(a) + points[i2].y * Math.Cos(a));
* points[i2] = new SDL.SDL_Point() { x = x, y = y };
* }
* shapePoints.AddRange(points);
* startAngle += arc;
*/
}
shapePoints.Add(shapePoints[0]); //ensure the last point is the same as the first, so it joins up.
List <Shape> shapes = new List <Shape>();
shapes.Add(new Shape()
{
Color = _color, Points = shapePoints.ToArray()
});
Shapes.AddRange(shapes);
}
