[vtkusers] vtkImageActor return error from function

[Jothy]

Tried it but didn't help!

Jothy

On Fri, Oct 1, 2010 at 5:29 PM, Darshan Pai <darshanpai at gmail.com> wrote:

> Shouldn't you have a call return as vtkImageActor and not a void ?
>
> On Fri, Oct 1, 2010 at 7:33 AM, Jothy <jothybasu at gmail.com> wrote:
>
>>
>> Hi all,
>>
>> I am trying to get the vtkImageACtor form a function, but it says
>> vtkImageActor is protected.
>>
>> I have tried even without vtkSmartPointer.
>>
>> Here is the code!
>>
>> Thanks
>>
>>  void MainWindow::imageReslice(int sliceValue)
>>
>> {
>>
>> this->imageData->GetWholeExtent(this->imgExtent);
>>
>> //qDebug()<<imgExtent[0]<<imgExtent[1]<<imgExtent[2]<<imgExtent[3]<<imgExtent[4]<<imgExtent[5];
>>
>> this->imageData->GetSpacing(this->imgSpacing);
>>
>> //qDebug()<<this->imgSpacing[0]<< this->imgSpacing[1]<< this->imgSpacing[2];
>>
>> this->imageData->GetOrigin(this->imgOrigin);
>>
>> //qDebug()<<this->imgOrigin[0]<< this->imgOrigin[1]<< this->imgOrigin[2];
>>
>> double center[3];
>>
>>  center[0] = this->imgOrigin[0] + this->imgSpacing[0] * 0.5 * (imgExtent[0] + imgExtent[1]);
>>
>>  center[1] = this->imgOrigin[1] + this->imgSpacing[1] * 0.5 * (imgExtent[2] + imgExtent[3]);
>>
>>  center[2] = this->imgOrigin[2] + this->imgSpacing[2] * 0.5 * (imgExtent[4] + imgExtent[5]);
>>
>>  // Matrices for axial, coronal, sagittal, oblique view orientations
>>
>>    static double axialElements[16] = {
>>
>>             1, 0, 0,0 ,
>>
>>             0, 1, 0, 0,
>>
>>             0, 0, 1, sliceValue,
>>
>>             0, 0, 0, 1 };
>>
>>    //static double coronalElements[16] = {
>>
>>    //         1, 0, 0, 0,
>>
>>    //         0, 0, 1, 0,
>>
>>    //         0,-1, 0, 0,
>>
>>    //         0, 0, 0, 1 };
>>
>> //   static double sagElements[16] = {
>>
>> //             0, 0,-1, 0,
>>
>> //            1, 0, 0, 0,
>>
>> //            0,-1, 0, 0,
>>
>> //            0, 0, 0, 1 };
>>
>> //   // Set the slice orientation
>>
>>     vtkSmartPointer<vtkMatrix4x4> resliceAxes =
>>
>>       vtkSmartPointer<vtkMatrix4x4>::New();
>>
>>     resliceAxes->DeepCopy(axialElements);
>>
>> //    // Set the point through which to slice
>>
>> //    resliceAxes->SetElement(0, 3, center[0]);
>>
>> //    resliceAxes->SetElement(1, 3, center[1]);
>>
>> //    resliceAxes->SetElement(2, 3, center[2]);
>>
>>     // Extract a slice in the desired orientation
>>
>>     vtkSmartPointer<vtkImageReslice> reslice =
>>
>>       vtkSmartPointer<vtkImageReslice>::New();
>>
>>     reslice->SetInput(this->imageData);
>>
>>     reslice->SetOutputDimensionality(2);
>>
>>     reslice->SetResliceAxes(resliceAxes);
>>
>>     reslice->SetInterpolationModeToLinear();
>>
>>     // Create a greyscale lookup table
>>
>>     vtkSmartPointer<vtkLookupTable> table =
>>
>>       vtkSmartPointer<vtkLookupTable>::New();
>>
>>     table->SetRange(-300,900); // image intensity range
>>
>>     table->SetValueRange(0.0, 1.0); // from black to white
>>
>>     table->SetSaturationRange(0.0, 0.0); // no color saturation
>>
>>     table->SetRampToLinear();
>>
>>     table->Build();
>>
>>     // Map the image through the lookup table
>>
>>     vtkSmartPointer<vtkImageMapToColors> color =
>>
>>       vtkSmartPointer<vtkImageMapToColors>::New();
>>
>>     color->SetLookupTable(table);
>>
>>     color->SetInputConnection(reslice->GetOutputPort());
>>
>>       // Return the image
>>
>>    vtkSmartPointer<vtkImageActor>   imgActor =  vtkSmartPointer<vtkImageActor>::New();
>>
>>     imgActor->SetInput(color->GetOutput());
>>
>>    return imgActor;
>>
>> }
>>
>>
>> Jothy
>>
>> --
>> Research Scholar
>> Dept. of Medical Physics
>> Clatterbridge Centre for Oncology
>> UK
>>
>>
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>


-- 
Research Scholar
Dept. of Medical Physics
Clatterbridge Centre for Oncology
UK
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