/// <summary>
/// Creates a deep copy.
/// </summary>
public override PlotItem Clone()
{
Function2D item = new Function2D();
item.CopyFrom(this);
return(item);
}
private bool GetZBitmap()
{
Function2D f = null;
for (int i = 0; i < Model.Items.Count; i++)
{
if (Model.Items[i] is Function2D)
{
f = (Function2D)Model.Items[i];
}
}
if (f != null)
{
if (f.rgb && (zscale.img == null || !zscale.rgb || fd != zscale.w || fh != zscale.h))
{
zscale.w = fd; zscale.h = fh;
zscale.img = new Bitmap(zscale.w, zscale.h);
for (int y = 0; y < zscale.h; y++)
{
for (int x = 0; x < zscale.w; x++)
{
zscale.img.SetPixel(x, zscale.h - 1 - y, f.RGBColor(((double)y) / zscale.h));
}
}
}
else if (!f.rgb && (zscale.img == null || zscale.rgb || f.Color != zscale.color ||
fd != zscale.w || fh != zscale.h))
{
zscale.w = fd; zscale.h = fh;
zscale.img = new Bitmap(zscale.w, zscale.h);
for (int y = 0; y < zscale.h; y++)
{
for (int x = 0; x < zscale.w; x++)
{
zscale.img.SetPixel(x, zscale.h - 1 - y, f.FColor(((double)y) / zscale.h));
}
}
}
zscale.color = f.Color;
zscale.rgb = f.rgb;
}
return(f != null);
}
/// <summary>
/// Calculates the bounds of the plotting area inside the control.
/// </summary>
/// <param name="g">A Graphics object.</param>
/// <param name="bounds">The bounds of the entire control.</param>
private void CalcFrame(Graphics g, Rectangle bounds)
{
int w = 0, h = 0, ww, wz = 0, n, W, H;
double y0 = Model.y0, y1 = Model.y1, x0 = Model.x0, x1 = Model.x1, z0 = Model.z0, z1 = Model.z1,
rx = Model.rx, ry = Model.ry, rz = Model.rz,
dy = (y1 - y0) / bounds.Height, dz = (z1 - z0) / bounds.Height, x, y, z;
SizeF size;
string label;
float Y, Z;
y = 0.5;
size = g.MeasureString(y.ToString(GraphModel.NumberFormat(Model.xDigits, Model.xNumberStyle)),
Model.ScaleFont);
fd = (int)(size.Height + 0.5F);
if (Model.Border)
{
if (Model.yScale)
{
y = Math.Floor(y0 / ry) * ry;
n = 1;
while ((y + n * ry) < y1)
{
Y = bounds.Height - 1 - (float)((y + n * ry - y0) / dy);
if ((int)(bounds.Height - 1 - (float)(-y0 / dy) + 0.5F) == (int)(Y + 0.5F))
{
label = "0";
}
else
{
label = (y + n * ry).ToString(GraphModel.NumberFormat(Model.yDigits, Model.yNumberStyle));
}
size = g.MeasureString(label, Model.ScaleFont);
w = Math.Max(w, (int)(size.Width + 0.5));
n++;
}
}
else
{
w = 0;
}
if (Model.xScale)
{
h = fd;
x = Math.Floor(x1 / rx) * rx;
label = x.ToString(GraphModel.NumberFormat(Model.xDigits, Model.xNumberStyle));
size = g.MeasureString(label, Model.ScaleFont);
ww = (int)(size.Width / 2 + 1);
}
else
{
ww = 0;
}
if (Model.zScale)
{
Function2D f = null;
for (int i = 0; i < Model.Items.Count; i++)
{
if (Model.Items[i] is Function2D)
{
f = (Function2D)Model.Items[i];
}
}
if (f != null)
{
z = Math.Floor(z0 / rz) * rz;
n = 1;
while ((z + n * rz) < z1)
{
Z = bounds.Height - 1 - (float)((z + n * rz - z0) / dz);
if ((int)(bounds.Height - 1 - (float)(-z0 / dz) + 0.5F) == (int)(Z + 0.5F))
{
label = "0";
}
else
{
label = (z + n * rz).ToString(GraphModel.NumberFormat(Model.zDigits, Model.zNumberStyle));
}
size = g.MeasureString(label, Model.ScaleFont);
wz = Math.Max(wz, (int)(size.Width + 0.5));
n++;
}
wz += 3 * fd + D;
}
else
{
wz = 0;
}
}
else
{
wz = 0;
}
fx = w + D;
fy = D / 2 + fd / 2;
W = bounds.Width - w - (3 * D) / 2 - ww - wz;
H = bounds.Height - h - fd / 2 - (3 * D) / 2;
if (W != fw && FixYtoX)
{
fw = W; fh = H;
Model.SetRange(x0, x1, y0, y1, fw, fh);
}
fw = W; fh = H;
}
else
{
fx = bounds.X; fy = bounds.Y; fw = bounds.Width - 1; fh = bounds.Height - 2;
}
}
/// <summary>
/// Creates a deep copy.
/// </summary>
public override PlotItem Clone() {
Function2D item = new Function2D();
item.CopyFrom(this);
return item;
}
private void UpdateGraph()
{
var cFunction = new Function2D { source = _function};
cFunction.Compile(true);
cFunction.lineWidth = 0.001F;
cFunction.Color = Color.DeepSkyBlue;
graph.Model.Items.Add(cFunction);
}
private void mandelbrotClick(object sender, System.EventArgs e) {
Function2D m = new Function2D();
//The source represents the body of the following function:
//double[] p, dfdp;
//double f(double x, double y) {
// ...
//}
m.source = "double xn = 0, yn = 0, x2 = 0, y2 = 0;" +
"for (int n = 0; n < 500; n++) {" +
" yn = 2*xn*yn + y;" +
" xn = x2 - y2 + x;" +
" x2 = xn*xn; y2 = yn*yn;" +
" if (x2 + y2 > 4) return n;" +
"} return 0;";
m.Compile(true);
graph.SetRange(graph.x0, graph.x1, graph.y0, graph.y1, 0, 20);
graph.Model.Items.Add(m);
graph.Invalidate();
}