// selection
public override void Select(ViewportRect rect, TransformMatrix matrix, Viewport3D viewport3d)
{
int nDotNo = GetDataNo();
if (nDotNo == 0)
{
return;
}
double xMin = rect.XMin();
double xMax = rect.XMax();
double yMin = rect.YMin();
double yMax = rect.YMax();
for (int i = 0; i < nDotNo; i++)
{
ScatterPlotItem plotItem = Get(i);
Point pt = matrix.VertexToViewportPt(new Point3D(plotItem.x, plotItem.y, plotItem.z),
viewport3d);
if ((pt.X > xMin) && (pt.X < xMax) && (pt.Y > yMin) && (pt.Y < yMax))
{
m_vertices[i].selected = true;
}
else
{
m_vertices[i].selected = false;
}
}
}
// convert the 3D scatter plot into a array of Mesh3D object
public ArrayList GetMeshes()
{
int nDotNo = GetDataNo();
if (nDotNo == 0)
{
return(null);
}
ArrayList meshs = new ArrayList();
int nVertIndex = 0;
for (int i = 0; i < nDotNo; i++)
{
ScatterPlotItem plotItem = Get(i);
int nType = plotItem.shape % Chart3D.SHAPE_NO;
float w = plotItem.w;
float h = plotItem.h;
Mesh3D dot;
m_vertices[i].nMinI = nVertIndex;
switch (nType)
{
case (int)SHAPE.BAR:
dot = new Bar3D(0, 0, 0, w, w, h);
break;
case (int)SHAPE.CONE:
dot = new Cone3D(w, w, h, 7);
break;
case (int)SHAPE.CYLINDER:
dot = new Cylinder3D(w, w, h, 7);
break;
case (int)SHAPE.ELLIPSE:
dot = new Ellipse3D(w, w, h, 7);
break;
case (int)SHAPE.PYRAMID:
dot = new Pyramid3D(w, w, h);
break;
default:
dot = new Bar3D(0, 0, 0, w, w, h);
break;
}
nVertIndex += dot.GetVertexNo();
m_vertices[i].nMaxI = nVertIndex - 1;
TransformMatrix.Transform(dot, new Point3D(plotItem.x, plotItem.y, plotItem.z), 0, 0);
dot.SetColor(plotItem.color);
meshs.Add(dot);
}
AddAxesMeshes(meshs);
return(meshs);
}
public void TestSimpleScatterPlot()
{
var mainWindow = (MainWindow)Application.Current.MainWindow;
string columnNameX = comboBoxX.SelectedItem.ToString();
string columnNameY = comboBoxY.SelectedItem.ToString();
string columnNameZ = comboBoxZ.SelectedItem.ToString();
var valuesX = (from row in mainWindow.gridData.AsEnumerable()
select Convert.ToDouble(row.Field <string>(columnNameX))).ToList();
var valuesY = (from row in mainWindow.gridData.AsEnumerable()
select Convert.ToDouble(row.Field <string>(columnNameY))).ToList();
var valuesZ = (from row in mainWindow.gridData.AsEnumerable()
select Convert.ToDouble(row.Field <string>(columnNameZ))).ToList();
int nDotNo = mainWindow.gridData.Rows.Count;
// 1. set the scatter plot size
m_3dChart = new ScatterChart3D();
m_3dChart.SetDataNo(nDotNo);
// 2. set the properties of each dot
Random randomObject = new Random();
for (int i = 0; i < nDotNo; i++)
{
ScatterPlotItem plotItem = new ScatterPlotItem();
plotItem.w = (float)0.1;
plotItem.h = (float)0.1;
plotItem.x = (float)valuesX[i];
plotItem.y = (float)valuesY[i];
plotItem.z = (float)valuesZ[i];
plotItem.shape = (int)Chart3D.SHAPE.ELLIPSE;
plotItem.nMaxI = 1;
Byte nR = (Byte)randomObject.Next(256);
Byte nG = (Byte)randomObject.Next(256);
Byte nB = (Byte)randomObject.Next(256);
plotItem.color = Color.FromRgb(255, 0, 0);
((ScatterChart3D)m_3dChart).SetVertex(i, plotItem);
}
// 3. set axes
m_3dChart.GetDataRange();
m_3dChart.SetAxes();
// 4. Get Mesh3D array from scatter plot
ArrayList meshs = ((ScatterChart3D)m_3dChart).GetMeshes();
// 5. display vertex no and triangle no.
UpdateModelSizeInfo(meshs);
// 6. show 3D scatter plot in Viewport3d
SWD.Model3D model3d = new SWD.Model3D();
m_nChartModelIndex = model3d.UpdateModel(meshs, null, m_nChartModelIndex, this.mainViewport);
// 7. set projection matrix
float viewRange = 5;
m_transformMatrix.CalculateProjectionMatrix(0, viewRange, 0, viewRange, 0, viewRange, 0.5);
TransformChart();
}
