/// <summary>
/// Paints the control.
/// </summary>
/// <param name="g">The Graphics object to paint to.</param>
public void PaintGraph(Graphics g)
{
double x, y, z;
float X, Y, Z, d;
int n;
Rectangle frame, bounds = this.Bounds;
SizeF size;
Region clip, frameclip, boundsclip;
double x0 = Model.x0, y0 = Model.y0, z0 = Model.z0, x1 = Model.x1, y1 = Model.y1, z1 = Model.z1,
rx = Model.rx, ry = Model.ry, rz = Model.rz, srx = rx / 5, sry = ry / 5, srz = rz / 5;
CalcFrame(g, bounds);
g.TranslateTransform(fx, fy, MatrixOrder.Append);
frame = new Rectangle(0, 0, fw + 1, fh + 1);
bounds = new Rectangle(-fx, -fy, bounds.Width, bounds.Height);
clip = g.Clip.Clone();
frameclip = clip.Clone();
boundsclip = clip.Clone();
frameclip.Intersect(frame);
boundsclip.Intersect(bounds);
double dx = (x1 - x0) / fw;
double dy = (y1 - y0) / fh;
double dz = (z1 - z0) / fh;
pen.DashStyle = DashStyle.Solid;
pen.Width = 1;
g.SetClip(frameclip, CombineMode.Replace);
//calculate functions
Calc.Start(frame);
if (!AsyncDraw)
{
while (!Calc.done)
{
}
}
//draw items
for (int i = 0; i < Model.Items.Count; i++)
{
Model.Items[i].Draw(g, Calc);
}
// draw selection
if (sw != 0 && sh != 0)
{
pen.Color = Color.White;
g.DrawRectangle(pen, Math.Min(sx - fx, sx + sw - fx), Math.Min(sy - fy, sy + sh - fy),
Math.Abs(sw), Math.Abs(sh));
pen.DashPattern = new float[2] {
3, 3
};
pen.DashStyle = DashStyle.Custom;
pen.Color = Color.Black;
g.DrawRectangle(pen, Math.Min(sx - fx, sx + sw - fx), Math.Min(sy - fy, sy + sh - fy),
Math.Abs(sw), Math.Abs(sh));
pen.DashStyle = DashStyle.Solid;
}
// draw raster
pen.Color = Model.ScaleColor;
pen.Width = Model.ScaleLineWidth;
brush.Color = Model.ScaleColor;
g.DrawRectangle(pen, 0, 0, fw, fh);
string label;
x = Math.Floor(x0 / rx) * rx + rx;
n = -4;
while (x + srx * n < x1)
{
X = (float)((x + srx * n - x0) / dx);
if (Model.xGrid && n % 5 == 0 && !((int)(-x0 / dx + 0.5) == (int)(X + 0.5F) && Model.yAxis))
{
pen.Color = Color.FromArgb(64, Model.ScaleColor);
g.DrawLine(pen, X, 0, X, fh);
pen.Color = Model.ScaleColor;
}
if (Model.xRaster && !((int)(-x0 / dx + 0.5) == (int)(X + 0.5F) && Model.yAxis))
{
if (n % 5 == 0)
{
d = fd;
}
else
{
d = fd / 2;
}
g.DrawLine(pen, X, 0, X, d);
g.DrawLine(pen, X, fh - d, X, fh);
}
if (Model.xScale && (n % 5 == 0))
{
if ((int)(-x0 / dx + 0.5) == (int)(X + 0.5F))
{
label = "0";
}
else
{
label = (x + srx * n).ToString(GraphModel.NumberFormat(Model.xDigits, Model.xNumberStyle));
}
size = g.MeasureString(label, Model.ScaleFont);
g.SetClip(boundsclip, CombineMode.Replace);
if (Model.Border)
{
g.DrawString(label, Model.ScaleFont, brush, new PointF(X - size.Width / 2, fh + D / 2));
}
else
{
g.DrawString(label, Model.ScaleFont, brush, new PointF(X - size.Width / 2, fh - 2 * fd - D / 2));
}
g.SetClip(frameclip, CombineMode.Replace);
}
if (yAxis && (int)(-x0 / dx + 0.5) == (int)(X + 0.5F))
{
g.DrawLine(pen, X, 0, X, fh);
}
n++;
}
y = Math.Floor(y0 / ry) * ry + ry;
n = -4;
while (y + sry * n < y1)
{
Y = fh - 1 - (float)((y + sry * n - y0) / dy);
if (Model.yGrid && n % 5 == 0 && !((int)(fh - 1 - (float)(-y0 / dy) + 0.5F) == (int)(Y + 0.5F) && xAxis))
{
pen.Color = Color.FromArgb(64, Model.ScaleColor);
g.DrawLine(pen, 0, Y, fw, Y);
pen.Color = Model.ScaleColor;
}
if (Model.yRaster && !((int)(fh - 1 - (float)(-y0 / dy) + 0.5F) == (int)(Y + 0.5F) && xAxis))
{
if (n % 5 == 0)
{
d = fd;
}
else
{
d = fd / 2;
}
g.DrawLine(pen, 0, Y, d, Y);
g.DrawLine(pen, fw - d, Y, fw, Y);
}
if (Model.yScale && (n % 5 == 0))
{
if ((int)(fh - 1 - (float)(-y0 / dy) + 0.5F) == (int)(Y + 0.5F))
{
label = "0";
}
else
{
label = (y + sry * n).ToString(GraphModel.NumberFormat(Model.yDigits, Model.yNumberStyle));
}
size = g.MeasureString(label, Model.ScaleFont);
g.SetClip(boundsclip, CombineMode.Replace);
if (Model.Border)
{
g.DrawString(label, Model.ScaleFont, brush, new PointF(-size.Width - D / 2, Y - fd / 2));
}
else
{
g.DrawString(label, Model.ScaleFont, brush, new PointF(D / 2 + fd, Y - fd / 2));
}
g.SetClip(frameclip, CombineMode.Replace);
}
if (xAxis && (int)(fh - 1 - (float)(-y0 / dy) + 0.5F) == (int)(Y + 0.5F))
{
g.DrawLine(pen, 0, Y, fw, Y);
}
n++;
}
//draw z-Scale
if (Model.zScale && GetZBitmap())
{
g.SetClip(boundsclip, CombineMode.Replace);
g.DrawImage(zscale.img, fw + fd, 0, fd, fh);
g.DrawRectangle(pen, fw + fd, 0, fd, fh);
z = Math.Floor(z0 / rz) * rz + rz;
n = -4;
while (z + srz * n < z1)
{
Z = fh - 1 - (float)((z + srz * n - z0) / dz);
if (n % 5 == 0)
{
d = fd;
}
else
{
d = fd / 2;
}
g.DrawLine(pen, fw + 2 * fd, Z, fw + 2 * fd + d, Z);
if (n % 5 == 0)
{
if ((int)(fh - 1 - (float)(-z0 / dz) + 0.5F) == (int)(Z + 0.5F))
{
label = "0";
}
else
{
label = (z + srz * n).ToString(GraphModel.NumberFormat(Model.zDigits, Model.zNumberStyle));
}
//size = g.MeasureString(label, Model.ScaleFont);
g.DrawString(label, Model.ScaleFont, brush, new PointF(fw + D / 2 + 3 * fd, Z - fd / 2));
}
n++;
}
}
//draw legend
if (Model.Legend)
{
float lw = 0;
int m = 0;
pen.Color = Model.ScaleColor;
for (n = 0; n < Model.Items.Count; n++)
{
if (Model.Items[n] is Function1D ||
(Model.Items[n] is DataItem && ((DataItem)Model.Items[n]).lines))
{
m++;
size = g.MeasureString(Model.Items[n].name, Model.ScaleFont);
lw = Math.Max(lw, size.Width);
}
}
int w = (int)(lw + 0.5) + (7 * fd) / 2, h = fd * m + D;
if (Model.LegendBorder)
{
brush.Color = Color.White;
g.FillRectangle(brush, fw - 2 * fd - w, fy + 2 * fd, w, h);
g.DrawRectangle(pen, fw - 2 * fd - w, fy + 2 * fd, w, h);
}
m = 0;
for (n = 0; n < Model.Items.Count; n++)
{
if (Model.Items[n] is Function1D ||
(Model.Items[n] is DataItem && ((DataItem)Model.Items[n]).lines))
{
brush.Color = Model.ScaleColor;
g.DrawString(Model.Items[n].name, Model.ScaleFont, brush, fw + fd - w, fy + 2 * fd + D / 2 + m * fd);
pen.DashStyle = Model.Items[n].lineStyle;
pen.Width = Model.Items[n].lineWidth;
g.DrawLine(pen, fw - w - (3 * fd) / 2, fy + 3 * fd + D / 2 + m * fd - fd / 2,
fw - w + fd / 2, fy + 3 * fd + D / 2 + m * fd - fd / 2);
m++;
}
}
}
//draw status message
if (!Calc.done)
{
brush.Color = Color.Red;
g.DrawString("calculating...", Model.ScaleFont, brush, bounds.Width / 2, bounds.Height / 2);
}
else
{
if (Bar != null)
{
lock (Bar) { Bar.Value = 0; }
}
}
//reset Graphics
g.ResetTransform();
g.SetClip(clip, CombineMode.Replace);
}
/// <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;
}
}