// function for testing surface chart
public void TestSurfacePlot(int nGridNo)
{
int nXNo = nGridNo;
int nYNo = nGridNo;
// 1. set the surface grid
m_3dChart = new UniformSurfaceChart3D();
((UniformSurfaceChart3D)m_3dChart).SetGrid(nXNo, nYNo, -100, 100, -100, 100);
// 2. set surface chart z value
double xC = m_3dChart.XCenter();
double yC = m_3dChart.YCenter();
int nVertNo = m_3dChart.GetDataNo();
double zV;
for (int i = 0; i < nVertNo; i++)
{
Vertex3D vert = m_3dChart[i];
double r = 0.15 * Math.Sqrt((vert.x - xC) * (vert.x - xC) + (vert.y - yC) * (vert.y - yC));
if (r < 1e-10)
{
zV = 1;
}
else
{
zV = Math.Sin(r) / r;
}
m_3dChart[i].z = (float)zV;
}
m_3dChart.GetDataRange();
// 3. set the surface chart color according to z vaule
double zMin = m_3dChart.ZMin();
double zMax = m_3dChart.ZMax();
for (int i = 0; i < nVertNo; i++)
{
Vertex3D vert = m_3dChart[i];
double h = (vert.z - zMin) / (zMax - zMin);
Color color = WPFChart3D.TextureMapping.PseudoColor(h);
m_3dChart[i].color = color;
}
// 4. Get the Mesh3D array from surface chart
ArrayList meshs = ((UniformSurfaceChart3D)m_3dChart).GetMeshes();
// 5. display vertex no and triangle no of this surface chart
UpdateModelSizeInfo(meshs);
// 6. Set the model display of surface chart
WPFChart3D.Model3D model3d = new WPFChart3D.Model3D();
Material backMaterial = new DiffuseMaterial(new SolidColorBrush(Colors.Gray));
m_nChartModelIndex = model3d.UpdateModel(meshs, backMaterial, m_nChartModelIndex, this.mainViewport);
// 7. set projection matrix, so the data is in the display region
float xMin = m_3dChart.XMin();
float xMax = m_3dChart.XMax();
m_transformMatrix.CalculateProjectionMatrix(xMin, xMax, xMin, xMax, zMin, zMax, 0.5);
TransformChart();
}
public void SetDataNo(int nSize)
{
m_vertices = new Vertex3D[nSize];
}