static public vtkProp3D genQuadricSurfaceActor(CompontData data, vtkProperty pro)
{
if (data.restriction != null)
{
return(genActorByRestriction(data, pro));
}
QuadricSurfaceData s = (QuadricSurfaceData)data;
vtkQuadric quadric = vtkQuadric.New();
quadric.SetCoefficients(s.param[0], s.param[1], s.param[2], s.param[3], s.param[4], s.param[5], s.param[6],
s.param[7], s.param[8], s.param[9] + 1);
//二次函数采样分辨率
vtkSampleFunction sample = vtkSampleFunction.New();
sample.SetSampleDimensions(60, 60, 30);
sample.SetImplicitFunction(quadric);
sample.SetModelBounds(s.param[10], s.param[11], s.param[12], s.param[13], s.param[14], s.param[15]);
vtkContourFilter contourFilter = vtkContourFilter.New();
contourFilter.SetInputConnection(sample.GetOutputPort());
contourFilter.GenerateValues(1, 1, 1);
contourFilter.Update();
return(genUserActor(data, contourFilter.GetOutputPort(), pro));
}
private void ImplicitBoolean()
{
vtkSphere sphere1 = vtkSphere.New();
sphere1.SetCenter(.9, 0, 0);
vtkSphere sphere2 = vtkSphere.New();
sphere2.SetCenter(-.9, 0, 0);
vtkImplicitBoolean implicitBoolean = vtkImplicitBoolean.New();
implicitBoolean.AddFunction(sphere1);
implicitBoolean.AddFunction(sphere2);
implicitBoolean.SetOperationTypeToUnion();
//implicitBoolean.SetOperationTypeToIntersection();
// Sample the function
vtkSampleFunction sample = vtkSampleFunction.New();
sample.SetSampleDimensions(50, 50, 50);
sample.SetImplicitFunction(implicitBoolean);
double value = 3.0;
double xmin = -value, xmax = value,
ymin = -value, ymax = value,
zmin = -value, zmax = value;
sample.SetModelBounds(xmin, xmax, ymin, ymax, zmin, zmax);
// Create the 0 isosurface
vtkContourFilter contours = vtkContourFilter.New();
#if VTK_MAJOR_VERSION_5
contours.SetInputConnection(sample.GetOutputPort());
#else
contours.SetInputData(sample);
#endif
contours.GenerateValues(1, 1, 1);
// Map the contours to graphical primitives
vtkPolyDataMapper contourMapper = vtkPolyDataMapper.New();
#if VTK_MAJOR_VERSION_5
contourMapper.SetInputConnection(contours.GetOutputPort());
#else
contourMapper.SetInputData(contours);
#endif
contourMapper.ScalarVisibilityOff();
// Create an actor for the contours
vtkActor contourActor = vtkActor.New();
contourActor.SetMapper(contourMapper);
// get a reference to the renderwindow of our renderWindowControl1
vtkRenderWindow renderWindow = renderWindowControl1.RenderWindow;
// renderer
vtkRenderer renderer = renderWindow.GetRenderers().GetFirstRenderer();
// set background color
renderer.SetBackground(.2, .3, .4);
renderer.AddActor(contourActor);
}
private void SampleFunction()
{
vtkSphere sphere = vtkSphere.New();
// Sample the function
vtkSampleFunction sample = vtkSampleFunction.New();
sample.SetSampleDimensions(50, 50, 50);
sample.SetImplicitFunction(sphere);
double value = 2.0;
double xmin = -value, xmax = value, ymin = -value, ymax = value, zmin = -value, zmax = value;
sample.SetModelBounds(xmin, xmax, ymin, ymax, zmin, zmax);
// Create the 0 isosurface
vtkContourFilter contours = vtkContourFilter.New();
#if VTK_MAJOR_VERSION_5
contours.SetInputConnection(sample.GetOutputPort());
#else
contours.SetInputData(sample);
#endif
contours.GenerateValues(1, 1, 1);
// Map the contours to graphical primitives
vtkPolyDataMapper contourMapper = vtkPolyDataMapper.New();
#if VTK_MAJOR_VERSION_5
contourMapper.SetInputConnection(contours.GetOutputPort());
#else
contourMapper.SetInputData(contours);
#endif
contourMapper.SetScalarRange(0.0, 1.2);
// Create an actor for the contours
vtkActor contourActor = vtkActor.New();
contourActor.SetMapper(contourMapper);
// -- create a box around the function to indicate the sampling volume --
// Create outline
vtkOutlineFilter outline = vtkOutlineFilter.New();
#if VTK_MAJOR_VERSION_5
outline.SetInputConnection(sample.GetOutputPort());
#else
outline.SetInputData(sample);
#endif
// Map it to graphics primitives
vtkPolyDataMapper outlineMapper = vtkPolyDataMapper.New();
#if VTK_MAJOR_VERSION_5
outlineMapper.SetInputConnection(outline.GetOutputPort());
#else
outlineMapper.SetInputData(outline);
#endif
// Create an actor for it
vtkActor outlineActor = vtkActor.New();
outlineActor.SetMapper(outlineMapper);
outlineActor.GetProperty().SetColor(0, 0, 0);
// get a reference to the renderwindow of our renderWindowControl1
vtkRenderWindow renderWindow = renderWindowControl1.RenderWindow;
// renderer
vtkRenderer renderer = renderWindow.GetRenderers().GetFirstRenderer();
// set background color
renderer.SetBackground(1.0, 1.0, 1.0);
// add our actor to the renderer
renderer.AddActor(contourActor);
renderer.AddActor(outlineActor);
}