internal void AddColorBar(Graphics g, DataSeries ds,
ChartStyle cs)
{
if (cs.IsColorBar && IsColorMap)
{
Pen aPen = new Pen(Color.Black, 1);
SolidBrush aBrush = new SolidBrush(cs.TickColor);
StringFormat sFormat = new StringFormat()
{
Alignment = StringAlignment.Near
};
SizeF size = g.MeasureString("A", cs.TickFont);
int x, y, width, height;
Point3[] pts = new Point3[64];
PointF[] pta = new PointF[4];
float zmin, zmax;
zmin = ds.ZDataMinF();
zmax = ds.ZDataMaxF();
float dz = (zmax - zmin) / 63;
x = 9 * form1.plotPicBox.Width / 10;
y = form1.plotPicBox.Height / 10;
width = form1.plotPicBox.Width / 25;
height = 4 * form1.plotPicBox.Height / 5;
for (int i = 0; i < pts.Length; i++)
{
pts[i] = new Point3(x, y, zmin + i * dz, 1);
}
for (int i = 0; i < pts.Length - 1; i++)
{
Color color = AddColor(cs, pts[i], zmin, zmax);
aBrush = new SolidBrush(color);
float y1 = y + height - (pts[i].Z - zmin) *
height / (zmax - zmin),
y2 = y + height - (pts[i + 1].Z - zmin) *
height / (zmax - zmin);
pta[0] = new PointF(x, y2);
pta[1] = new PointF(x + width, y2);
pta[2] = new PointF(x + width, y1);
pta[3] = new PointF(x, y1);
g.FillPolygon(aBrush, pta);
g.DrawLine(new Pen(color), pta[0], pta[1]);
}
g.DrawRectangle(aPen, x, y, width, height);
float tickLength = 0.1f * width;
for (float z = zmin; z <= zmax; z += (zmax - zmin) / 6)
{
float yy = y + height - (z - zmin) *
height / (zmax - zmin);
g.DrawLine(aPen, x, yy, x + tickLength, yy);
g.DrawLine(aPen, x + width, yy, x + width - tickLength, yy);
g.DrawString(Math.Round(z, 2).ToString(),
cs.TickFont, Brushes.Black, new PointF(x + width + 5,
yy - size.Height / 2), sFormat);
}
}
}
private void AddSurface(Graphics g, DataSeries ds,
ChartStyle cs)
{
Pen aPen = new Pen(ds.LineStyle.LineColor, ds.LineStyle.Thickness)
{
DashStyle = ds.LineStyle.Pattern
};
SolidBrush aBrush = new SolidBrush(Color.FromArgb(255, Color.White));
Matrix3 m = Matrix3.AzimuthElevation(cs.Elevation, cs.Azimuth);
PointF[] pta = new PointF[4];
Point3[,] pts = ds.PointArray,
pts1 = new Point3[pts.GetLength(0), pts.GetLength(1)];
// find the min and max z value
float zmin = ds.ZDataMinF(),
zmax = ds.ZDataMaxF();
for (int i = 0; i < pts.GetLength(0); i++)
{
for (int j = 0; j < pts.GetLength(1); j++)
{
pts1[i, j] = new Point3(pts[i, j].X, pts[i, j].Y,
pts[i, j].Z, 1);
pts[i, j].Transform(m, form1, cs);
}
}
// draw surface
if (!IsInterp)
{
for (int i = 0; i < pts.GetLength(0) - 1; i++)
{
for (int j = 0; j < pts.GetLength(1) - 1; j++)
{
int ii = i, jj = j;
if (cs.Elevation >= 0)
{
if (cs.Azimuth >= -180 && cs.Azimuth < -90)
{
ii = pts.GetLength(0) - 2 - i;
jj = j;
}
else if (cs.Azimuth >= -90 && cs.Azimuth < 0)
{
ii = pts.GetLength(0) - 2 - i;
jj = pts.GetLength(1) - 2 - j;
}
else if (cs.Azimuth >= 0 && cs.Azimuth < 90)
{
ii = i;
jj = pts.GetLength(1) - 2 - j;
}
else if (cs.Azimuth >= 90 && cs.Azimuth <= 180)
{
ii = i;
jj = j;
}
}
else if (cs.Elevation < 0)
{
if (cs.Azimuth >= -180 && cs.Azimuth < -90)
{
ii = pts.GetLength(0) - 2 - i;
jj = j;
}
else if (cs.Azimuth >= -90 && cs.Azimuth < 0)
{
ii = pts.GetLength(0) - 2 - i;
jj = pts.GetLength(1) - 2 - j;
}
else if (cs.Azimuth >= 0 && cs.Azimuth < 90)
{
ii = i;
jj = pts.GetLength(1) - 2 - j;
}
else if (cs.Azimuth >= 90 && cs.Azimuth <= 180)
{
ii = i;
jj = j;
}
}
pta[0] = new PointF(pts[ii, jj].X, pts[ii, jj].Y);
pta[1] = new PointF(pts[ii, jj + 1].X, pts[ii, jj + 1].Y);
pta[2] = new PointF(pts[ii + 1, jj + 1].X, pts[ii + 1, jj + 1].Y);
pta[3] = new PointF(pts[ii + 1, jj].X, pts[ii + 1, jj].Y);
Color color = AddColor(cs, pts[ii, jj], zmin, zmax);
aBrush = new SolidBrush(Color.FromArgb(255, color));
g.FillPolygon(aBrush, pta);
if ((form1.tabControl1.SelectedIndex == 1) && SlowShow)
{
Thread.Sleep(25);
}
if (ds.LineStyle.IsVisible)
{
g.DrawPolygon(aPen, pta);
}
}
}
}
else if (IsInterp)
{
for (int i = 0; i < pts.GetLength(0) - 1; i++)
{
for (int j = 0; j < pts.GetLength(1) - 1; j++)
{
int ii = i;
if (cs.Azimuth >= -180 && cs.Azimuth < 0)
{
ii = pts.GetLength(0) - 2 - i;
}
Point3[] points = new Point3[4];
points[0] = pts1[ii, j];
points[1] = pts1[ii, j + 1];
points[2] = pts1[ii + 1, j + 1];
points[3] = pts1[ii + 1, j];
Interp(g, cs, m, points, zmin, zmax, 1);
pta[0] = new PointF(pts[ii, j].X, pts[ii, j].Y);
pta[1] = new PointF(pts[ii, j + 1].X, pts[ii, j + 1].Y);
pta[2] = new PointF(pts[ii + 1, j + 1].X, pts[ii + 1, j + 1].Y);
pta[3] = new PointF(pts[ii + 1, j].X, pts[ii + 1, j].Y);
if (ds.LineStyle.IsVisible)
{
g.DrawPolygon(aPen, pta);
}
}
}
}
}
private void Interp(Graphics g, ChartStyle cs,
Matrix3 m, Point3[] pta, float zmin, float zmax, int flag)
{
SolidBrush aBrush = new SolidBrush(Color.Black);
PointF[] points = new PointF[4];
int npoints = NumberInterp;
Point3[,] pts = new Point3[npoints + 1, npoints + 1],
pts1 = new Point3[npoints + 1, npoints + 1];
float x0 = pta[0].X,
y0 = pta[0].Y,
x1 = pta[2].X,
y1 = pta[2].Y,
dx = (x1 - x0) / npoints,
dy = (y1 - y0) / npoints,
C00 = pta[0].Z,
C10 = pta[3].Z,
C11 = pta[2].Z,
C01 = pta[1].Z,
x, y, C;
Color color;
if (flag == 1)
{
for (int i = 0; i <= npoints; i++)
{
x = x0 + i * dx;
for (int j = 0; j <= npoints; j++)
{
y = y0 + j * dy;
C = (y1 - y) * ((x1 - x) * C00 +
(x - x0) * C10) / (x1 - x0) / (y1 - y0) +
(y - y0) * ((x1 - x) * C01 +
(x - x0) * C11) / (x1 - x0) / (y1 - y0);
pts[i, j] = new Point3(x, y, C, 1);
pts[i, j].Transform(m, form1, cs);
}
}
}
else if (flag == 2) // for XYcolor chart
{
for (int i = 0; i <= npoints; i++)
{
x = x0 + i * dx;
for (int j = 0; j <= npoints; j++)
{
y = y0 + j * dy;
C = (y1 - y) * ((x1 - x) * C00 +
(x - x0) * C10) / (x1 - x0) / (y1 - y0) +
(y - y0) * ((x1 - x) * C01 +
(x - x0) * C11) / (x1 - x0) / (y1 - y0);
pts[i, j] = new Point3(x, y, C, 1);
pts[i, j].Transform(m, form1, cs);
}
}
}
else if (flag == 3) // for XYColor3D chart
{
for (int i = 0; i <= npoints; i++)
{
x = x0 + i * dx;
for (int j = 0; j <= npoints; j++)
{
y = y0 + j * dy;
C = (y1 - y) * ((x1 - x) * C00 +
(x - x0) * C10) / (x1 - x0) / (y1 - y0) +
(y - y0) * ((x1 - x) * C01 +
(x - x0) * C11) / (x1 - x0) / (y1 - y0);
pts1[i, j] = new Point3(x, y, C, 1);
pts[i, j] = new Point3(x, y, cs.ZMin, 1);
pts[i, j].Transform(m, form1, cs);
}
}
}
for (int i = 0; i < npoints; i++)
{
for (int j = 0; j < npoints; j++)
{
color = AddColor(cs, pts[i, j], zmin, zmax);
aBrush = new SolidBrush(Color.FromArgb(255, color));
points[0] = new PointF(pts[i, j].X, pts[i, j].Y);
points[1] = new PointF(pts[i + 1, j].X, pts[i + 1, j].Y);
points[2] = new PointF(pts[i + 1, j + 1].X, pts[i + 1, j + 1].Y);
points[3] = new PointF(pts[i, j + 1].X, pts[i, j + 1].Y);
g.FillPolygon(aBrush, points);
aBrush.Dispose();
}
}
}
public void AddPoint(Point3 pt)
{
PointList.Add(pt);
}