public void AddTickLine(ChartStyle cs, Point pt1, Point pt2)
{
Line line = new Line();
line.X1 = pt1.X;
line.Y1 = pt1.Y;
line.X2 = pt2.X;
line.Y2 = pt2.Y;
line.Stroke = Brushes.Black;
cs.ChartCanvas.Children.Add(line);
}
public void Interp(ChartStyle cs, Matrix3D m, Point3D[] pta, double zmin, double zmax)
{
Polygon plg = new Polygon();
Point[] points = new Point[4];
int npoints = NumberInterp;
Point3D[,] pts = new Point3D[npoints + 1, npoints + 1];
Point3D[,] pts1 = new Point3D[npoints + 1, npoints + 1];
double x0 = pta[0].X;
double y0 = pta[0].Y;
double x1 = pta[2].X;
double y1 = pta[2].Y;
double dx = (x1 - x0) / npoints;
double dy = (y1 - y0) / npoints;
double c00 = pta[0].Z;
double c10 = pta[3].Z;
double c11 = pta[2].Z;
double c01 = pta[1].Z;
double x, y, c;
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 Point3D(x, y, c);
pts1[i, j] = new Point3D(x, y, c);
pts[i, j] = cs.Normalize3D(m, pts[i, j]);
}
}
for (int i = 0; i < npoints; i++)
{
for (int j = 0; j < npoints; j++)
{
plg = new Polygon();
Brush brush = GetBrush(pts1[i, j].Z, zmin, zmax);
plg.Fill = brush;
plg.StrokeThickness = 0.1;
plg.Stroke = brush;
plg.Points.Add(new Point(pts[i, j].X, pts[i, j].Y));
plg.Points.Add(new Point(pts[i + 1, j].X, pts[i + 1, j].Y));
plg.Points.Add(new Point(pts[i + 1, j + 1].X, pts[i + 1, j + 1].Y));
plg.Points.Add(new Point(pts[i, j + 1].X, pts[i, j + 1].Y));
cs.ChartCanvas.Children.Add(plg);
}
}
}
public void AddLine3D(ChartStyle cs)
{
Matrix3D m = Utility.AzimuthElevation(cs.Elevation, cs.Azimuth);
Point3D[] pts = new Point3D[Point3DList.Count];
for (int i = 0; i < Point3DList.Count; i++)
{
pts[i] = cs.Normalize3D(m, Point3DList[i]);
LineSeries.Points.Add(new Point(pts[i].X, pts[i].Y));
}
AddLinePattern();
cs.ChartCanvas.Children.Add(LineSeries);
}
private void DrawLine3D(ChartStyle cs, DataSeriesSurface ds, SolidColorBrush brush, Point pt0, Point pt1)
{
Line line = new Line();
line.Stroke = ds.LineColor;
if (IsLineColorMatch)
{
line.Stroke = brush;
}
line.StrokeThickness = ds.LineThickness;
line.X1 = pt0.X;
line.Y1 = pt0.Y;
line.X2 = pt1.X;
line.Y2 = pt1.Y;
cs.ChartCanvas.Children.Add(line);
}
public void AddSurfaceChart(ChartStyle cs, DataSeriesSurface ds)
{
cs.AddChartStyle();
switch (SurfaceChartType)
{
case SurfaceChartTypeEnum.Mesh:
AddMesh(cs, ds);
break;
case SurfaceChartTypeEnum.MeshZ:
AddMeshZ(cs, ds);
break;
case SurfaceChartTypeEnum.Waterfall:
AddWaterfall(cs, ds);
break;
case SurfaceChartTypeEnum.Surface:
AddSurface(cs, ds);
break;
}
}
private void AddXYColor3D(ChartStyle cs, DataSeriesSurface ds)
{
Point3D[,] pts = ds.PointArray;
Point3D[,] pts1 = new Point3D[pts.GetLength(0), pts.GetLength(1)];
Matrix3D m = Utility.AzimuthElevation(cs.Elevation, cs.Azimuth);
Polygon plg = new Polygon();
// Find the minumum and maximum z values:
double zmin = ds.ZDataMin();
double zmax = ds.ZDataMax();
// Perform transformation on points:
for (int i = 0; i < pts.GetLength(0); i++)
{
for (int j = 0; j < pts.GetLength(1); j++)
{
// Make a deep copy the points array:
pts1[i, j] = new Point3D(pts[i, j].X, pts[i, j].Y, cs.Zmin);
pts1[i, j] = cs.Normalize3D(m, pts1[i, j]);
}
}
// Draw surface on the XY plane:
for (int i = 0; i < pts.GetLength(0) - 1; i++)
{
for (int j = 0; j < pts.GetLength(1) - 1; j++)
{
plg = new Polygon();
plg.Points.Add(new Point(pts1[i, j].X, pts1[i, j].Y));
plg.Points.Add(new Point(pts1[i, j + 1].X, pts1[i, j + 1].Y));
plg.Points.Add(new Point(pts1[i + 1, j + 1].X, pts1[i + 1, j + 1].Y));
plg.Points.Add(new Point(pts1[i + 1, j].X, pts1[i + 1, j].Y));
plg.StrokeThickness = ds.LineThickness;
plg.Fill = GetBrush(pts[i, j].Z, zmin, zmax);
plg.Stroke = GetBrush(pts[i, j].Z, zmin, zmax);
cs.ChartCanvas.Children.Add(plg);
}
}
}
public void AddColorBar(ChartStyle cs, DataSeriesSurface ds, double zmin, double zmax)
{
TextBlock tb;
tb = new TextBlock();
tb.Text = "A";
tb.FontFamily = cs.TickFont;
tb.FontSize = cs.TickFontSize;
tb.Measure(new Size(Double.PositiveInfinity, Double.PositiveInfinity));
Size tickSize = tb.DesiredSize;
double x = 6 * cs.ChartCanvas.Width / 7;
double y = cs.ChartCanvas.Height / 10;
double width = cs.ChartCanvas.Width / 25;
double height = 8 * cs.ChartCanvas.Height / 10;
Point3D[] pts = new Point3D[64];
double dz = (zmax - zmin) / 63;
// Create the color bar:
Polygon plg;
for (int i = 0; i < 64; i++)
{
pts[i] = new Point3D(x, y, zmin + i * dz);
}
for (int i = 0; i < 63; i++)
{
SolidColorBrush brush = GetBrush(pts[i].Z, zmin, zmax);
double y1 = y + height - (pts[i].Z - zmin) * height / (zmax - zmin);
double y2 = y + height - (pts[i + 1].Z - zmin) * height / (zmax - zmin);
plg = new Polygon();
plg.Points.Add(new Point(x, y2));
plg.Points.Add(new Point(x + width, y2));
plg.Points.Add(new Point(x + width, y1));
plg.Points.Add(new Point(x, y1));
plg.Fill = brush;
plg.Stroke = brush;
cs.ChartCanvas.Children.Add(plg);
}
Rectangle rect = new Rectangle();
rect.Width = width + 2;
rect.Height = height + 2;
rect.Stroke = Brushes.Black;
Canvas.SetLeft(rect, x - 1);
Canvas.SetTop(rect, y - 1);
cs.ChartCanvas.Children.Add(rect);
// Add ticks and labels to the color bar:
double tickLength = 0.15 * width;
for (double z = zmin; z <= zmax; z = z + (zmax - zmin) / 6)
{
double yy = y + height - (z - zmin) * height / (zmax - zmin);
AddTickLine(cs, new Point(x, yy), new Point(x + tickLength, yy));
AddTickLine(cs, new Point(x + width, yy), new Point(x + width - tickLength, yy));
tb = new TextBlock();
tb.Text = (Math.Round(z, 2)).ToString();
tb.FontFamily = cs.TickFont;
tb.FontSize = cs.TickFontSize;
cs.ChartCanvas.Children.Add(tb);
Canvas.SetLeft(tb, x + width + 5);
Canvas.SetTop(tb, yy - tickSize.Height / 2);
}
}
public void AddSurface(ChartStyle cs, DataSeriesSurface ds)
{
Matrix3D m = Utility.AzimuthElevation(cs.Elevation, cs.Azimuth);
Polygon plg = new Polygon();
Point3D[,] pts = ds.PointArray;
Point3D[,] pts1 = new Point3D[pts.GetLength(0), pts.GetLength(1)];
//double[,] zValues = new double[pts.GetLength(0), pts.GetLength(1)];
double zmin = ds.ZDataMin();
double zmax = ds.ZDataMax();
for (int i = 0; i < pts.GetLength(0); i++)
{
for (int j = 0; j < pts.GetLength(1); j++)
{
//zValues[i, j] = pts[i, j].Z;
pts1[i, j] = pts[i, j];
pts[i, j] = cs.Normalize3D(m, pts[i, j]);
}
}
// Draw surface chart:
if (!IsInterp)
{
for (int i = 0; i < pts.GetLength(0) - 1; i++)
{
int ii = i;
if (cs.Elevation >= 0)
{
ii = i;
if (cs.Azimuth >= -180 && cs.Azimuth < 0)
{
ii = pts.GetLength(0) - 2 - i;
}
}
else
{
ii = pts.GetLength(0) - 2 - i;
if (cs.Azimuth >= -180 && cs.Azimuth < 0)
{
ii = i;
}
}
for (int j = 0; j < pts.GetLength(1) - 1; j++)
{
int jj = j;
if (cs.Elevation < 0)
{
jj = pts.GetLength(1) - 2 - j;
}
plg = new Polygon();
plg.Points.Add(new Point(pts[ii, jj].X, pts[ii, jj].Y));
plg.Points.Add(new Point(pts[ii, jj + 1].X, pts[ii, jj + 1].Y));
plg.Points.Add(new Point(pts[ii + 1, jj + 1].X, pts[ii + 1, jj + 1].Y));
plg.Points.Add(new Point(pts[ii + 1, jj].X, pts[ii + 1, jj].Y));
plg.StrokeThickness = ds.LineThickness;
plg.Stroke = ds.LineColor;
plg.Fill = GetBrush(pts1[ii, jj].Z, zmin, zmax);
cs.ChartCanvas.Children.Add(plg);
}
}
if (cs.IsColorBar && IsColormap)
{
AddColorBar(cs, ds, zmin, zmax);
}
}
else if (IsInterp)
{
for (int i = 0; i < pts.GetLength(0) - 1; i++)
{
int ii = i;
if (cs.Elevation >= 0)
{
ii = i;
if (cs.Azimuth >= -180 && cs.Azimuth < 0)
{
ii = pts.GetLength(0) - 2 - i;
}
}
else
{
ii = pts.GetLength(0) - 2 - i;
if (cs.Azimuth >= -180 && cs.Azimuth < 0)
{
ii = i;
}
}
for (int j = 0; j < pts.GetLength(1) - 1; j++)
{
int jj = j;
if (cs.Elevation < 0)
{
jj = pts.GetLength(1) - 2 - j;
}
Point3D[] points = new Point3D[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(cs, m, points, zmin, zmax);
plg = new Polygon();
plg.Stroke = ds.LineColor;
plg.Points.Add(new Point(pts[ii, j].X, pts[ii, j].Y));
plg.Points.Add(new Point(pts[ii, j + 1].X, pts[ii, j + 1].Y));
plg.Points.Add(new Point(pts[ii + 1, j + 1].X, pts[ii + 1, j + 1].Y));
plg.Points.Add(new Point(pts[ii + 1, j].X, pts[ii + 1, j].Y));
cs.ChartCanvas.Children.Add(plg);
}
}
}
if (cs.IsColorBar && IsColormap)
{
AddColorBar(cs, ds, zmin, zmax);
}
}
private void AddWaterfall(ChartStyle cs, DataSeriesSurface ds)
{
Matrix3D m = Utility.AzimuthElevation(cs.Elevation, cs.Azimuth);
Polygon plg = new Polygon();
Point3D[,] pts = ds.PointArray;
Point3D[] pt3 = new Point3D[pts.GetLength(0) + 2];
double[] zValues = new double[pts.Length];
Point[] pta = new Point[pts.GetLength(0) + 2];
double zmin = ds.ZDataMin();
double zmax = ds.ZDataMax();
for (int j = 0; j < pts.GetLength(1); j++)
{
int jj = j;
if (cs.Elevation >= 0)
{
if (cs.Azimuth >= -90 && cs.Azimuth < 90)
{
jj = pts.GetLength(1) - 1 - j;
}
}
else if (cs.Elevation < 0)
{
jj = pts.GetLength(1) - 1 - j;
if (cs.Azimuth >= -90 && cs.Azimuth < 90)
{
jj = j;
}
}
for (int i = 0; i < pts.GetLength(0); i++)
{
pt3[i + 1] = pts[i, jj];
if (i == 0)
{
pt3[0] = new Point3D(pt3[i + 1].X, pt3[i + 1].Y, cs.Zmin);
}
if (i == pts.GetLength(0) - 1)
{
pt3[pts.GetLength(0) + 1] = new Point3D(pt3[i + 1].X, pt3[i + 1].Y, cs.Zmin);
}
}
plg = new Polygon();
for (int i = 0; i < pt3.Length; i++)
{
zValues[i] = pt3[i].Z;
pt3[i] = cs.Normalize3D(m, pt3[i]);
pta[i] = new Point(pt3[i].X, pt3[i].Y);
plg.Points.Add(new Point(pt3[i].X, pt3[i].Y));
}
plg.Stroke = Brushes.Transparent;
plg.StrokeThickness = ds.LineThickness;
plg.Fill = Brushes.White;
cs.ChartCanvas.Children.Add(plg);
for (int i = 1; i < pt3.Length; i++)
{
Line line = new Line();
line.Stroke = Brushes.Black;
line.StrokeThickness = ds.LineThickness;
if (IsColormap)
{
if (i < pt3.Length - 1)
{
line.Stroke = GetBrush(zValues[i], zmin, zmax);
}
else
{
line.Stroke = GetBrush(zValues[i - 1], zmin, zmax);
}
}
line.X1 = pta[i - 1].X;
line.Y1 = pta[i - 1].Y;
line.X2 = pta[i].X;
line.Y2 = pta[i].Y;
cs.ChartCanvas.Children.Add(line);
}
}
if (cs.IsColorBar && IsColormap)
{
AddColorBar(cs, ds, zmin, zmax);
}
}
private void AddMeshZ(ChartStyle cs, DataSeriesSurface ds)
{
Matrix3D m = Utility.AzimuthElevation(cs.Elevation, cs.Azimuth);
Polygon plg = new Polygon();
Point3D[,] pts = ds.PointArray;
Point3D[,] pts1 = new Point3D[pts.GetLength(0), pts.GetLength(1)];
double[,] zValues = new double[pts.GetLength(0), pts.GetLength(1)];
double zmin = ds.ZDataMin();
double zmax = ds.ZDataMax();
for (int i = 0; i < pts.GetLength(0); i++)
{
for (int j = 0; j < pts.GetLength(1); j++)
{
zValues[i, j] = pts[i, j].Z;
pts1[i, j] = new Point3D(pts[i, j].X, pts[i, j].Y, pts[i, j].Z);
pts[i, j] = cs.Normalize3D(m, pts[i, j]);
}
}
// Draw mesh using the z-order method:
for (int i = 0; i < pts.GetLength(0) - 1; i++)
{
int ii = i;
if (cs.Elevation >= 0)
{
ii = i;
if (cs.Azimuth >= -180 && cs.Azimuth < 0)
{
ii = pts.GetLength(0) - 2 - i;
}
}
else
{
ii = pts.GetLength(0) - 2 - i;
if (cs.Azimuth >= -180 && cs.Azimuth < 0)
{
ii = i;
}
}
for (int j = 0; j < pts.GetLength(1) - 1; j++)
{
int jj = j;
if (cs.Elevation < 0)
{
jj = pts.GetLength(1) - 2 - j;
}
plg = new Polygon();
plg.Points.Add(new Point(pts[ii, jj].X, pts[ii, jj].Y));
plg.Points.Add(new Point(pts[ii, jj + 1].X, pts[ii, jj + 1].Y));
plg.Points.Add(new Point(pts[ii + 1, jj + 1].X, pts[ii + 1, jj + 1].Y));
plg.Points.Add(new Point(pts[ii + 1, jj].X, pts[ii + 1, jj].Y));
plg.Stroke = Brushes.Black;
plg.StrokeThickness = ds.LineThickness;
plg.Fill = Brushes.White;
if (!IsHiddenLine)
{
plg.Fill = Brushes.Transparent;
}
if (IsColormap)
{
plg.Stroke = GetBrush(zValues[ii, jj], zmin, zmax);
}
cs.ChartCanvas.Children.Add(plg);
}
}
//Draw curtain lines:
Point3D[] pta = new Point3D[4];
for (int i = 0; i < pts1.GetLength(0); i++)
{
int jj = pts1.GetLength(0) - 1;
if (cs.Elevation >= 0)
{
if (cs.Azimuth >= -90 && cs.Azimuth <= 90)
{
jj = 0;
}
}
else if (cs.Elevation < 0)
{
jj = 0;
if (cs.Azimuth >= -90 && cs.Azimuth <= 90)
{
jj = pts1.GetLength(0) - 1;
}
}
if (i < pts1.GetLength(0) - 1)
{
pta[0] = new Point3D(pts1[i, jj].X, pts1[i, jj].Y, pts1[i, jj].Z);
pta[1] = new Point3D(pts1[i + 1, jj].X, pts1[i + 1, jj].Y, pts1[i + 1, jj].Z);
pta[2] = new Point3D(pts1[i + 1, jj].X, pts1[i + 1, jj].Y, cs.Zmin);
pta[3] = new Point3D(pts1[i, jj].X, pts1[i, jj].Y, cs.Zmin);
for (int k = 0; k < 4; k++)
{
pta[k] = cs.Normalize3D(m, pta[k]);
}
plg = new Polygon();
plg.Stroke = Brushes.Black;
plg.StrokeThickness = ds.LineThickness;
plg.Fill = Brushes.White;
plg.Points.Add(new Point(pta[0].X, pta[0].Y));
plg.Points.Add(new Point(pta[1].X, pta[1].Y));
plg.Points.Add(new Point(pta[2].X, pta[2].Y));
plg.Points.Add(new Point(pta[3].X, pta[3].Y));
if (!IsHiddenLine)
{
plg.Fill = Brushes.Transparent;
}
if (IsColormap)
{
plg.Stroke = GetBrush(pts1[i, jj].Z, zmin, zmax);
}
cs.ChartCanvas.Children.Add(plg);
}
}
for (int j = 0; j < pts1.GetLength(1); j++)
{
int ii = 0;
if (cs.Elevation >= 0)
{
if (cs.Azimuth >= 0 && cs.Azimuth <= 180)
{
ii = pts1.GetLength(1) - 1;
}
}
else if (cs.Elevation < 0)
{
if (cs.Azimuth >= -180 && cs.Azimuth <= 0)
{
ii = pts1.GetLength(1) - 1;
}
}
if (j < pts1.GetLength(1) - 1)
{
pta[0] = new Point3D(pts1[ii, j].X, pts1[ii, j].Y, pts1[ii, j].Z);
pta[1] = new Point3D(pts1[ii, j + 1].X, pts1[ii, j + 1].Y, pts1[ii, j + 1].Z);
pta[2] = new Point3D(pts1[ii, j + 1].X, pts1[ii, j + 1].Y, cs.Zmin);
pta[3] = new Point3D(pts1[ii, j].X, pts1[ii, j].Y, cs.Zmin);
for (int k = 0; k < 4; k++)
{
pta[k] = cs.Normalize3D(m, pta[k]);
}
plg = new Polygon();
plg.Stroke = Brushes.Black;
plg.StrokeThickness = ds.LineThickness;
plg.Fill = Brushes.White;
plg.Points.Add(new Point(pta[0].X, pta[0].Y));
plg.Points.Add(new Point(pta[1].X, pta[1].Y));
plg.Points.Add(new Point(pta[2].X, pta[2].Y));
plg.Points.Add(new Point(pta[3].X, pta[3].Y));
if (!IsHiddenLine)
{
plg.Fill = Brushes.Transparent;
}
if (IsColormap)
{
plg.Stroke = GetBrush(pts1[ii, j].Z, zmin, zmax);
}
cs.ChartCanvas.Children.Add(plg);
}
}
if (cs.IsColorBar && IsColormap)
{
AddColorBar(cs, ds, zmin, zmax);
}
}
public void AddMesh(ChartStyle cs, DataSeriesSurface ds)
{
Matrix3D m = Utility.AzimuthElevation(cs.Elevation, cs.Azimuth);
Polygon plg = new Polygon();
Point3D[,] pts = ds.PointArray;
double[,] zValues = new double[pts.GetLength(0), pts.GetLength(1)];
double zmin = ds.ZDataMin();
double zmax = ds.ZDataMax();
for (int i = 0; i < pts.GetLength(0); i++)
{
for (int j = 0; j < pts.GetLength(1); j++)
{
zValues[i, j] = pts[i, j].Z;
pts[i, j] = cs.Normalize3D(m, pts[i, j]);
}
}
// Draw mesh chart:
for (int i = 0; i < pts.GetLength(0) - 1; i++)
{
int ii = i;
if (cs.Elevation >= 0)
{
ii = i;
if (cs.Azimuth >= -180 && cs.Azimuth < 0)
{
ii = pts.GetLength(0) - 2 - i;
}
}
else
{
ii = pts.GetLength(0) - 2 - i;
if (cs.Azimuth >= -180 && cs.Azimuth < 0)
{
ii = i;
}
}
for (int j = 0; j < pts.GetLength(1) - 1; j++)
{
int jj = j;
if (cs.Elevation < 0)
{
jj = pts.GetLength(1) - 2 - j;
}
plg = new Polygon();
plg.Points.Add(new Point(pts[ii, jj].X, pts[ii, jj].Y));
plg.Points.Add(new Point(pts[ii, jj + 1].X, pts[ii, jj + 1].Y));
plg.Points.Add(new Point(pts[ii + 1, jj + 1].X, pts[ii + 1, jj + 1].Y));
plg.Points.Add(new Point(pts[ii + 1, jj].X, pts[ii + 1, jj].Y));
plg.Stroke = Brushes.Black;
plg.StrokeThickness = ds.LineThickness;
plg.Fill = Brushes.White;
if (!IsHiddenLine)
{
plg.Fill = Brushes.Transparent;
}
if (IsColormap)
{
plg.Stroke = GetBrush(zValues[ii, jj], zmin, zmax);
}
cs.ChartCanvas.Children.Add(plg);
}
}
if (cs.IsColorBar && IsColormap)
{
AddColorBar(cs, ds, zmin, zmax);
}
}
private void AddContour3D(ChartStyle cs, DataSeriesSurface ds)
{
Point3D[] pta = new Point3D[2];
Point3D[,] pts = ds.PointArray;
Matrix3D m = Utility.AzimuthElevation(cs.Elevation, cs.Azimuth);
SolidColorBrush brush = Brushes.Black;
// Find the minumum and maximum z values:
double zmin = ds.ZDataMin();
double zmax = ds.ZDataMax();
double[] zlevels = new Double[NumberContours];
for (int i = 0; i < NumberContours; i++)
{
zlevels[i] = zmin + i * (zmax - zmin) / (NumberContours - 1);
}
int i0, i1, i2, j0, j1, j2;
double zratio = 1;
// Draw contour on the XY plane:
for (int i = 0; i < pts.GetLength(0) - 1; i++)
{
for (int j = 0; j < pts.GetLength(1) - 1; j++)
{
if (IsColormap && ChartType != ChartTypeEnum.FillContour)
{
brush = GetBrush(pts[i, j].Z, zmin, zmax);
}
for (int k = 0; k < numberContours; k++)
{
// Left triangle:
i0 = i;
j0 = j;
i1 = i;
j1 = j + 1;
i2 = i + 1;
j2 = j + 1;
if ((zlevels[k] >= pts[i0, j0].Z && zlevels[k] <
pts[i1, j1].Z || zlevels[k] < pts[i0, j0].Z &&
zlevels[k] >= pts[i1, j1].Z) &&
(zlevels[k] >= pts[i1, j1].Z && zlevels[k]
< pts[i2, j2].Z || zlevels[k] < pts[i1, j1].Z &&
zlevels[k] >= pts[i2, j2].Z))
{
zratio = (zlevels[k] - pts[i0, j0].Z) /
(pts[i1, j1].Z - pts[i0, j0].Z);
pta[0] = new Point3D(pts[i0, j0].X, (1 - zratio) * pts[i0, j0].Y + zratio * pts[i1, j1].Y, cs.Zmin);
zratio = (zlevels[k] - pts[i1, j1].Z) / (pts[i2, j2].Z - pts[i1, j1].Z);
pta[1] = new Point3D((1 - zratio) * pts[i1, j1].X + zratio * pts[i2, j2].X, pts[i1, j1].Y, cs.Zmin);
pta[0] = cs.Normalize3D(m, pta[0]);
pta[1] = cs.Normalize3D(m, pta[1]);
DrawLine3D(cs, ds, brush, new Point(pta[0].X, pta[0].Y), new Point(pta[1].X, pta[1].Y));
}
else if ((zlevels[k] >= pts[i0, j0].Z && zlevels[k]
< pts[i2, j2].Z || zlevels[k] < pts[i0, j0].Z &&
zlevels[k] >= pts[i2, j2].Z) &&
(zlevels[k] >= pts[i1, j1].Z && zlevels[k]
< pts[i2, j2].Z || zlevels[k] < pts[i1, j1].Z &&
zlevels[k] >= pts[i2, j2].Z))
{
zratio = (zlevels[k] - pts[i0, j0].Z) / (pts[i2, j2].Z - pts[i0, j0].Z);
pta[0] = new Point3D((1 - zratio) * pts[i0, j0].X + zratio * pts[i2, j2].X, (1 - zratio) * pts[i0, j0].Y +
zratio * pts[i2, j2].Y, cs.Zmin);
zratio = (zlevels[k] - pts[i1, j1].Z) / (pts[i2, j2].Z - pts[i1, j1].Z);
pta[1] = new Point3D((1 - zratio) * pts[i1, j1].X + zratio * pts[i2, j2].X, pts[i1, j1].Y, cs.Zmin);
pta[0] = cs.Normalize3D(m, pta[0]);
pta[1] = cs.Normalize3D(m, pta[1]);
DrawLine3D(cs, ds, brush, new Point(pta[0].X, pta[0].Y), new Point(pta[1].X, pta[1].Y));
}
else if ((zlevels[k] >= pts[i0, j0].Z && zlevels[k]
< pts[i1, j1].Z || zlevels[k] < pts[i0, j0].Z &&
zlevels[k] >= pts[i1, j1].Z) &&
(zlevels[k] >= pts[i0, j0].Z && zlevels[k]
< pts[i2, j2].Z || zlevels[k] < pts[i0, j0].Z &&
zlevels[k] >= pts[i2, j2].Z))
{
zratio = (zlevels[k] - pts[i0, j0].Z) /
(pts[i1, j1].Z - pts[i0, j0].Z);
pta[0] = new Point3D(pts[i0, j0].X, (1 - zratio) * pts[i0, j0].Y + zratio * pts[i1, j1].Y, cs.Zmin);
zratio = (zlevels[k] - pts[i0, j0].Z) / (pts[i2, j2].Z - pts[i0, j0].Z);
pta[1] = new Point3D(pts[i0, j0].X * (1 - zratio) + pts[i2, j2].X * zratio,
pts[i0, j0].Y * (1 - zratio) + pts[i2, j2].Y * zratio, cs.Zmin);
pta[0] = cs.Normalize3D(m, pta[0]);
pta[1] = cs.Normalize3D(m, pta[1]);
DrawLine3D(cs, ds, brush, new Point(pta[0].X, pta[0].Y), new Point(pta[1].X, pta[1].Y));
}
// right triangle:
i0 = i;
j0 = j;
i1 = i + 1;
j1 = j;
i2 = i + 1;
j2 = j + 1;
if ((zlevels[k] >= pts[i0, j0].Z && zlevels[k] <
pts[i1, j1].Z || zlevels[k] < pts[i0, j0].Z &&
zlevels[k] >= pts[i1, j1].Z) &&
(zlevels[k] >= pts[i1, j1].Z && zlevels[k]
< pts[i2, j2].Z || zlevels[k] < pts[i1, j1].Z &&
zlevels[k] >= pts[i2, j2].Z))
{
zratio = (zlevels[k] - pts[i0, j0].Z) /
(pts[i1, j1].Z - pts[i0, j0].Z);
pta[0] = new Point3D(pts[i0, j0].X * (1 - zratio) + pts[i1, j1].X * zratio, pts[i0, j0].Y, cs.Zmin);
zratio = (zlevels[k] - pts[i1, j1].Z) / (pts[i2, j2].Z - pts[i1, j1].Z);
pta[1] = new Point3D(pts[i1, j1].X, pts[i1, j1].Y * (1 - zratio) + pts[i2, j2].Y * zratio, cs.Zmin);
pta[0] = cs.Normalize3D(m, pta[0]);
pta[1] = cs.Normalize3D(m, pta[1]);
DrawLine3D(cs, ds, brush, new Point(pta[0].X, pta[0].Y), new Point(pta[1].X, pta[1].Y));
}
else if ((zlevels[k] >= pts[i0, j0].Z && zlevels[k]
< pts[i2, j2].Z || zlevels[k] < pts[i0, j0].Z &&
zlevels[k] >= pts[i2, j2].Z) &&
(zlevels[k] >= pts[i1, j1].Z && zlevels[k] <
pts[i2, j2].Z || zlevels[k] < pts[i1, j1].Z &&
zlevels[k] >= pts[i2, j2].Z))
{
zratio = (zlevels[k] - pts[i0, j0].Z) /
(pts[i2, j2].Z - pts[i0, j0].Z);
pta[0] = new Point3D(pts[i0, j0].X * (1 - zratio) + pts[i2, j2].X * zratio,
pts[i0, j0].Y * (1 - zratio) + pts[i2, j2].Y * zratio, cs.Zmin);
zratio = (zlevels[k] - pts[i1, j1].Z) / (pts[i2, j2].Z - pts[i1, j1].Z);
pta[1] = new Point3D(pts[i1, j1].X, pts[i1, j1].Y * (1 - zratio) + pts[i2, j2].Y * zratio, cs.Zmin);
pta[0] = cs.Normalize3D(m, pta[0]);
pta[1] = cs.Normalize3D(m, pta[1]);
DrawLine3D(cs, ds, brush, new Point(pta[0].X, pta[0].Y), new Point(pta[1].X, pta[1].Y));
}
else if ((zlevels[k] >= pts[i0, j0].Z && zlevels[k]
< pts[i1, j1].Z || zlevels[k] < pts[i0, j0].Z &&
zlevels[k] >= pts[i1, j1].Z) &&
(zlevels[k] >= pts[i0, j0].Z && zlevels[k] <
pts[i2, j2].Z || zlevels[k] < pts[i0, j0].Z &&
zlevels[k] >= pts[i2, j2].Z))
{
zratio = (zlevels[k] - pts[i0, j0].Z) / (pts[i1, j1].Z - pts[i0, j0].Z);
pta[0] = new Point3D(pts[i0, j0].X * (1 - zratio) + pts[i1, j1].X * zratio, pts[i0, j0].Y, cs.Zmin);
zratio = (zlevels[k] - pts[i0, j0].Z) / (pts[i2, j2].Z - pts[i0, j0].Z);
pta[1] = new Point3D(pts[i0, j0].X * (1 - zratio) + pts[i2, j2].X * zratio,
pts[i0, j0].Y * (1 - zratio) + pts[i2, j2].Y * zratio, cs.Zmin);
pta[0] = cs.Normalize3D(m, pta[0]);
pta[1] = cs.Normalize3D(m, pta[1]);
DrawLine3D(cs, ds, brush, new Point(pta[0].X, pta[0].Y), new Point(pta[1].X, pta[1].Y));
}
}
}
}
}