基于vtk结构化网格的eclipse三维地质模型

上述基于vtkHexahedron网格的三维模型显示需要显式地定义每个vtkHexahedron网格，然后建立vtkUnstructuredGrid，属于非结构化网格，计算量大。这个实例采用了vtkStructuredGrid的格式，不用显式地定义每个网格，只需要定义每个节点的空间坐标就行，计算量小，显示速度快，同时还以vtkAxesActor方式添加了XYZ方向的坐标轴。采用java的具体代码如下，其中coordXYZGrid是eclipse网格种每个节点的空间坐标，values是每个网格的属性值。

private void DrawstructuredGrid(Point3D[][][] coordXYZGrid, double[][][] values, double valueMin, double valueMax)

{

int node_nk = coordXYZGrid.length;

int node_nj = coordXYZGrid[0].length;

int node_ni = coordXYZGrid[0][0].length;

System.out.println("nk="+node_nk+" nj="+node_nj+" ni="+node_ni);

//create the points and array

vtkPoints points = new vtkPoints();

vtkDoubleArray scalars = new vtkDoubleArray();

//points.SetNumberOfPoints(node_ni * node_nj * node_nk);

for (int k = 0; k < node_nk; k++)

{

for (int j = 0; j < node_nj; j++)

{

for (int i = 0; i < node_ni; i++)

{

//points.InsertPoint(seq, coordXYZGrid[k][j][i].X, coordXYZGrid[k][j][i].Y, coordXYZGrid[k][j][i].Z);

points.InsertNextPoint(coordXYZGrid[k][j][i].X, coordXYZGrid[k][j][i].Y, coordXYZGrid[k][j][i].Z);

//scalars.InsertTuple1(seq, k);

scalars.InsertNextTuple1(values[k][j][i]);

//Console.WriteLine(“{0} {1} {2}”, coordXYZGrid[i, j, k].x, coordXYZGrid[i, j, k].y, coordXYZGrid[i, j, k].z);

//seq += 1;

}

//create the structured grid

vtkStructuredGrid grid = new vtkStructuredGrid();

grid.SetDimensions(node_ni, node_nj, node_nk); //ni nj nk

grid.SetPoints(points);

grid.GetCellData().SetScalars(scalars);

//create a mapper

vtkDataSetMapper mapper = new vtkDataSetMapper();

mapper.SetInputData(grid);

mapper.SetScalarRange(valueMin,valueMax);

//create the actor

vtkActor actor = new vtkActor();

actor.SetMapper(mapper);

actor.GetProperty().SetDiffuseColor(1, 1, 0);

vtkRenderer render = new vtkRenderer();

vtkRenderWindow renWin = new vtkRenderWindow();

//设置交互样式

vtkRenderWindowInteractor renwinIn = new vtkRenderWindowInteractor();

renwinIn.SetRenderWindow(renWin);

renWin.AddRenderer(render);

render.SetBackground(0, 0, 0); //blue(0,0,1),red(1,0,0)

render.AddActor(actor);

//设置坐标轴

vtkAxesActor axesActor = new vtkAxesActor();

vtkOrientationMarkerWidget widget = new vtkOrientationMarkerWidget();

widget.SetOutlineColor(0.1, 0.1, 0.1);

widget.SetOrientationMarker(axesActor);

widget.SetInteractor(renwinIn);

widget.SetEnabled(1);

widget.InteractiveOn();

//可视化输出

render.ResetCamera();

renWin.Render();

renwinIn.Start();

}

具体显示结果如下

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