public override object GetCopy()
{
Lens obj = new Lens(this.Type);
obj.Angle = this.angle;
obj.defaultColor = this.defaultColor;
obj.focusColor = this.focusColor;
obj.height = this.height;
obj.width = this.width;
obj.x = this.x;
obj.y = this.y;
obj.radius1 = this.radius1;
obj.radius2 = this.radius2;
return(obj);
}
//Input: Light list, graphics g and a Lens
//Output: Change the Light list to the path casued by the lens
public static void LensAlgoritem(List <Light> lightList, Graphics g, Lens obj)
{
try
{
Light last = lightList[lightList.Count - 1];
PointF pi = last.pi;
PointF pf = last.pf;
PointF firstPoint = new PointF(pi.X, pi.Y);
Color lightColor = last.LightColor;
double initialAngle = last.GetAngle();
Region lensReg = obj.GetRegion();
Region rayReg = last.GetRegion();
lensReg.Intersect(rayReg); //Intersect area of lens and the last light
if (!lensReg.IsEmpty(g))
{
//getting the hit point
RectangleF boundsRect = lensReg.GetBounds(g);
PointF hit = new PointF((boundsRect.Right + boundsRect.Left) / 2, (boundsRect.Top + boundsRect.Bottom) / 2);
pf = hit;
//creating a light bewtween initial point and hit point
lightList[lightList.Count - 1] = new Light(pi, pf, lightColor);
pi = pf;
Light light = new Light(pi, pf);
double beta = 0;
beta = GetImagePointAngle(g, firstPoint, obj, initialAngle, hit);
//creating a light between the hit point and on
light = new Light(hit, MathHelper.GetEndLight(hit, beta), lightColor);
lightList.Add(light);
}
}
catch
{
}
}
//Input: Graphics g and a lens
//Output: Draw the either the focal points of the lens or/and the lens optical axis
public static void DrawFocalPointsAndOpticalAxis(Graphics g, Lens lens)
{
//draw the focal points of the lens who got hit
PointF focal1 = new PointF(lens.X + (float)lens.FocalPoint - 5, lens.Y - 5);
PointF focal2 = new PointF(lens.X - (float)lens.FocalPoint - 5, lens.Y - 5);
focal1 = MathHelper.RotatePointF(lens, focal1);
focal2 = MathHelper.RotatePointF(lens, focal2);
if (lens.ShowFocalPoints)
{
g.FillEllipse(Brushes.BlueViolet, focal1.X, focal1.Y, 10, 10);
g.FillEllipse(Brushes.BlueViolet, focal2.X, focal2.Y, 10, 10);
}
if (lens.ShowOpticalAxis)
{
Light l1 = new Light(lens.CenterPoint, MathHelper.GetEndLight(lens.CenterPoint, lens.Angle));
Light l2 = new Light(lens.CenterPoint, MathHelper.GetEndLight(lens.CenterPoint, lens.Angle + 180));
g.DrawLine(Pens.DarkBlue, l1.pi, l1.pf);
g.DrawLine(Pens.DarkBlue, l2.pi, l2.pf);
}
}
//Input: Graphics g, point which the last light start from, Lens object, angle of last light and the hit point
//Output: calculate the angle in which the light comes out of the lens
public static double GetImagePointAngle(Graphics g, PointF firstPoint, Lens obj, double angle, PointF hit)
{
bool imaginary = false;
float f = (float)obj.FocalPoint;
float u = (float)Math.Abs(obj.X - firstPoint.X);
float ho = firstPoint.Y - obj.Y;
float v = 1 / ((1 / f) - (1 / u));
float hi = (v * ho / u);
PointF imagePoint = new PointF();
bool isVertical = obj.Angle > 225 && obj.Angle < 315 || obj.Angle > 45 && obj.Angle < 135;
if (!isVertical)
{
Color imageColor = obj.RealImageColor;
if (v * u < 0)
{
imageColor = obj.ImaginaryImageColor;
imaginary = true;
}
if (firstPoint.X > obj.X)
{
v *= -1;
}
imagePoint = new PointF(obj.X + (float)(v), obj.Y - (float)hi);
/*double angleToRotate = obj.Angle;
* if (angleToRotate >= 90 && angleToRotate <= 270) angleToRotate = angleToRotate + 180;
* imagePoint = MathHelper.RotatePointF(imagePoint, obj.CenterPoint, 0*angleToRotate);*/
//drawing image
if (obj.ShowImage)
{
g.FillEllipse(new SolidBrush(imageColor), imagePoint.X - 5, imagePoint.Y - 5, 10, 10);
}
}
else
{
u = (float)Math.Abs(obj.Y - firstPoint.Y);
ho = -firstPoint.X + obj.X;
v = 1 / ((1 / f) - (1 / u));
hi = (v * ho / u);
Color imageColor = obj.RealImageColor;
if (v * u < 0)
{
imageColor = obj.ImaginaryImageColor;
imaginary = true;
}
if (firstPoint.Y > obj.Y)
{
v *= -1;
}
imagePoint = new PointF(obj.X + (float)(v), obj.Y - (float)hi);
/*double angleToRotate = obj.Angle;
* if (angleToRotate >= 0 && angleToRotate <= 180) angleToRotate = angleToRotate + 180;
* imagePoint = MathHelper.RotatePointF(imagePoint, obj.CenterPoint, angleToRotate);*/
//drawing image
if (obj.ShowImage)
{
g.FillEllipse(new SolidBrush(imageColor), imagePoint.X - 5, imagePoint.Y - 5, 10, 10);
}
}
//give information to data class
if (Main_Form.highlightedIndex != -1)
{
PhysicalObject highlighted = Main_Form.objectsList[Main_Form.highlightedIndex];
if (highlighted == obj)
{
LensInfo.focal = Math.Round(f, 3);
LensInfo.u = Math.Round(u, 3);
LensInfo.v = Math.Round(-v, 3);
LensInfo.ho = Math.Round(-ho, 3);
LensInfo.hi = Math.Round(hi, 3);
}
}
double angleToReturn = new Light(hit, imagePoint).GetAngle();
if (imaginary)
{
angleToReturn = new Light(hit, imagePoint).GetAngle() + 180;
}
return(angleToReturn);
}
