public ComplexPoint DoCmplxAdd(ComplexPoint arg)
{
x += arg.x;
y += arg.y;
return(this);
}
public ComplexPoint GetAbsoluteMathsCoord(ComplexPoint pixelCoord)
{
ComplexPoint result = new ComplexPoint(
(convConstX2 + pixelCoord.x) / convConstX1,
(convConstY1 - pixelCoord.y) / convConstY2);
return(result);
}
public ComplexPoint GetDeltaMathsCoord(ComplexPoint pixelCoord)
{
ComplexPoint result = new ComplexPoint(
pixelCoord.x / convConstX1,
pixelCoord.y / convConstY2);
return(result);
}
public PixelCoord GetPixelCoord(ComplexPoint cmplxPoint)
{
PixelCoord result = new PixelCoord();
result.xPixel = (int)(convConstX1 * cmplxPoint.x - convConstX2);
result.yPixel = (int)(convConstY1 - convConstY2 * cmplxPoint.y);
return(result);
}
public ScreenPixelManage(Bitmap graphics, ComplexPoint screenBottomLeftCorner, ComplexPoint screenTopRightCorner)
{
convConstX1 = graphics.Width / (screenTopRightCorner.x - screenBottomLeftCorner.x);
convConstX2 = convConstX1 * screenBottomLeftCorner.x;
convConstY1 = graphics.Size.Height * (1.0 + screenBottomLeftCorner.y / (screenTopRightCorner.y - screenBottomLeftCorner.y));
convConstY2 = graphics.Size.Height / (screenTopRightCorner.y - screenBottomLeftCorner.y);
}
public ComplexPoint DoCmplxSq()
{
ComplexPoint result = new ComplexPoint(0, 0);
result.x = x * x - y * y;
result.y = 2 * x * y;
return(result);
}
public ComplexPoint DoCmplxSqPlusConst(ComplexPoint arg)
{
ComplexPoint result = new ComplexPoint(0, 0);
result.x = x * x - y * y;
result.y = 2 * x * y;
result.x += arg.x;
result.y += arg.y;
return(result);
}
public Bitmap GetImage(int width, int height, double xMinParam, double xMaxParam, double yMinParam, double yMaxParam, int kParam, double power, int startHue, int endHue, double power2, float light)
{
int kMax = kParam;
int xyPixelStep = 1;
double yMin = yMinParam;
double yMax = yMaxParam;
double xMin = xMinParam;
double xMax = xMaxParam;
Bitmap bmp = new Bitmap(width, height);
int numColours = kMax;
ColourTable colourTable = new ColourTable(numColours, power, power2, startHue, endHue, light);
int kLast = -1;
double modulusSquared;
Color color;
Color colorLast = Color.Red;
ComplexPoint screenBottomLeft = new ComplexPoint(xMinParam, yMinParam);
ComplexPoint screenTopRight = new ComplexPoint(xMaxParam, yMaxParam);
ScreenPixelManage myPixelManager = new ScreenPixelManage(bmp, screenBottomLeft, screenTopRight);
ComplexPoint pixelStep = new ComplexPoint(xyPixelStep, xyPixelStep);
ComplexPoint xyStep = myPixelManager.GetDeltaMathsCoord(pixelStep);
int yPix = bmp.Height - 1;
for (double y = yMinParam; y < yMaxParam; y += xyStep.y)
{
int xPix = 0;
for (double x = xMinParam; x < xMaxParam; x += xyStep.x)
{
ComplexPoint c = new ComplexPoint(x, y);
ComplexPoint zk = new ComplexPoint(0, 0);
int k = 0;
do
{
zk = zk.DoCmplxSqPlusConst(c);
modulusSquared = zk.DoModulusSq();
k++;
}while ((modulusSquared <= 4.0) && (k < kMax));
if (k == kLast)
{
color = colorLast;
}
else
{
color = colourTable.GetColour(k);
colorLast = color;
}
if (k == kMax)
{
color = Color.Black;
}
if (xyPixelStep == 1)
{
if ((xPix < bmp.Width) && (yPix >= 0))
{
bmp.SetPixel(xPix, yPix, color);
}
}
else
{
for (int pX = 0; pX < xyPixelStep; pX++)
{
for (int pY = 0; pY < xyPixelStep; pY++)
{
if (((xPix + pX) < bmp.Width) && ((yPix - pY) >= 0))
{
bmp.SetPixel(xPix + pX, yPix - pY, color);
}
}
}
}
xPix += xyPixelStep;
}
yPix -= xyPixelStep;
}
return(bmp);
}
