private void RotateImage(RotationOperation operation)
{
vtkImageReslice reslice = vtkImageReslice.New();
vtkTransform transform = vtkTransform.New();
transform.PostMultiply();
double[] center = { 75, 100, 0 };
transform.Translate(-center[0], -center[1], -center[2]);
if (operation == RotationOperation.Forward)
{
transform.RotateZ(90);
}
else if (operation == RotationOperation.Back)
{
transform.RotateZ(-90);
}
transform.Translate(+center[0], +center[1], +center[2]);
transform.Update();
reslice.SetInput(_viewer.GetInput());
reslice.SetResliceTransform(transform);
reslice.Update();
_viewer.SetInput(reslice.GetOutput());
UpdateViewer();
}
/// <summary>
/// Update the 2D visualization when the plane moved.
/// </summary>
/// <param name="plane">PlaneWidget which changed the coordinates.</param>
public void PlaneMoved(vtkImagePlaneWidget plane)
{
vtkImageReslice reslice = vtkImageReslice.New();
vtkTransform transform = vtkTransform.New();
transform.PostMultiply();
//TODO wyznaczenie centrum okna
double[] center = { 75, 100, 0 };
transform.Translate(-center[0], -center[1], -center[2]);
transform.RotateZ(_orientation);
transform.Translate(+center[0], +center[1], +center[2]);
transform.Update();
reslice.SetInput(plane.GetResliceOutput());
reslice.SetResliceTransform(transform);
reslice.Update();
//
vtkImageData viewerInputData;
viewerInputData = reslice.GetOutput();
_lastData = viewerInputData;
_viewer.SetInput(viewerInputData);
//
//_viewer.SetInput(reslice.GetOutput());
UpdateViewer();
}
/// <summary>
/// Rotates volume along given axis.
/// </summary>
/// <param name="volume"></param>
/// <param name="angles"></param>
public static void RotateData(ref vtkImageData volume, double[] angles)
{
// Rotation along image center
double[] center = volume.GetExtent().Divide(2);
// Dimensions of rotated image
int[] outExtent = volume.GetExtent().Multiply(1.1).Round().ToInt32();
// Rotation parameters
var rotate = new vtkTransform();
rotate.Translate(center[1], center[3], center[5]);
rotate.RotateX(angles[0]);
rotate.RotateY(angles[1]);
rotate.RotateZ(angles[2]); // z angle should be 0
rotate.Translate(-center[1], -center[3], -center[5]);
// Perform rotation
var slice = new vtkImageReslice();
slice.SetInput(volume);
slice.SetResliceTransform(rotate);
slice.SetInterpolationModeToCubic();
slice.SetOutputSpacing(volume.GetSpacing()[0], volume.GetSpacing()[1], volume.GetSpacing()[2]);
slice.SetOutputOrigin(volume.GetOrigin()[0], volume.GetOrigin()[1], volume.GetOrigin()[2]);
slice.SetOutputExtent(outExtent[0], outExtent[1], outExtent[2], outExtent[3], outExtent[4], outExtent[5]);
}
//TODO
public void DrawingModeRepaint()
{
if (_lastData == null)
{
return;
}
vtkImageReslice reslice = vtkImageReslice.New();
vtkTransform transform = vtkTransform.New();
transform.PostMultiply();
//TODO wyznaczenie centrum okna
double[] center = { 75, 100, 0 };
transform.Translate(-center[0], -center[1], -center[2]);
transform.RotateZ(_orientation);
transform.Translate(+center[0], +center[1], +center[2]);
transform.Update();
reslice.SetInput(_lastData);
reslice.SetResliceTransform(transform);
reslice.Update();
vtkImageData viewerInputData;
if (!DrawingEnabled)
{
viewerInputData = reslice.GetOutput();
}
else
{
var resliceOutput = reslice.GetOutput();
var sizeArray = resliceOutput.GetDimensions();
vtkImageCanvasSource2D imageCanvas = vtkImageCanvasSource2D.New();
imageCanvas.SetScalarTypeToUnsignedChar();
imageCanvas.SetExtent(0, sizeArray[0], 0, sizeArray[1], 0, 0);
imageCanvas.DrawImage(0, 0, resliceOutput);
DrawingUtils.Draw(imageCanvas, DrawingInfo);
imageCanvas.Update();
viewerInputData = imageCanvas.GetOutput();
}
_viewer.SetInput(viewerInputData);
UpdateViewer();
}
/// <summary>
/// Rotates 3D vtk volume around x and y axes.
/// </summary>
/// <param name="input"></param>
/// <param name="angle"></param>
/// <param name="axis"></param>
/// <param name="out_extent"></param>
/// <returns></returns>
public static vtkImageData rotate_sample(vtkImageData input, double angle, int axis, int out_extent = 0)
{
//get input data dimensions
int[] dims = input.GetExtent();
//Compute centers
int[] centers = new int[] { (dims[1] + dims[0]) / 2, (dims[3] + dims[2]) / 2, (dims[5] + dims[4]) / 2 };
//Set rotation axis
int[] axes = new int[3];
axes[axis] = 1;
int[] new_dims = new int[] { dims[0], dims[1], dims[2], dims[3], dims[4], dims[5] };
int[] new_centers = new int[] { centers[0], centers[1], centers[2] };
//Compute new sample dimensions
if (axis == 0)
{
new_dims[3] = (int)(Math.Cos(Math.Abs(angle / 180) * Math.PI) * new_dims[3] + Math.Sin(Math.Abs(angle / 180) * Math.PI) * new_dims[5]);
new_dims[5] = (int)(Math.Sin(Math.Abs(angle / 180) * Math.PI) * new_dims[3] + Math.Cos(Math.Abs(angle / 180) * Math.PI) * new_dims[5]);
new_centers[1] = (Math.Abs(new_dims[3]) + Math.Abs(new_dims[2])) / 2;
new_centers[2] = (Math.Abs(new_dims[5]) + Math.Abs(new_dims[4])) / 2;
}
if (axis == 1)
{
new_dims[1] = (int)(Math.Cos(Math.Abs(angle / 180) * Math.PI) * new_dims[1] + Math.Sin(Math.Abs(angle / 180) * Math.PI) * new_dims[5]);
new_dims[5] = (int)(Math.Sin(Math.Abs(angle / 180) * Math.PI) * new_dims[1] + Math.Cos(Math.Abs(angle / 180) * Math.PI) * new_dims[5]);
new_centers[0] = (Math.Abs(new_dims[0]) + Math.Abs(new_dims[1])) / 2;
new_centers[2] = (Math.Abs(new_dims[5]) + Math.Abs(new_dims[4])) / 2;
}
//Image transformation
vtkTransform transform = vtkTransform.New();
transform.Translate(centers[0], centers[1], centers[2]);
transform.RotateWXYZ(angle, axes[0], axes[1], axes[2]);
if (out_extent == 0)
{
transform.Translate(-centers[0], -centers[1], -centers[2]);
}
else
{
transform.Translate(-new_centers[0], -new_centers[1], -new_centers[2]);
}
//Console.ReadKey();
transform.Update();
//Compute new data extent
int[] diff = new int[] { new_dims[1] - dims[1], new_dims[3] - dims[3], new_dims[5] - dims[5] };
new_dims[0] += diff[0] / 2; new_dims[1] -= diff[0] / 2;
new_dims[2] += diff[1] / 2; new_dims[3] -= diff[1] / 2;
new_dims[4] += diff[2] / 2; new_dims[5] -= diff[2] / 2;
//Image reslicing
vtkImageReslice rotater = vtkImageReslice.New();
rotater.SetInput(input);
rotater.SetInformationInput(input);
rotater.SetResliceTransform(transform);
rotater.SetInterpolationModeToCubic();
//rotater.SetInterpolationModeToLinear();
if (out_extent == 1)
{
rotater.SetOutputSpacing(input.GetSpacing()[0], input.GetSpacing()[1], input.GetSpacing()[2]);
rotater.SetOutputOrigin(input.GetOrigin()[0], input.GetOrigin()[1], input.GetOrigin()[2]);
rotater.SetOutputExtent(new_dims[0], new_dims[1], new_dims[2], new_dims[3], new_dims[4], new_dims[5]);
}
rotater.Update();
vtkImageData output = vtkImageData.New();
output.DeepCopy(rotater.GetOutput());
rotater.Dispose();
transform.Dispose();
return(output);
}