[vtkusers] Inverse of vtkQImageToImageSource?

[Julien Finet]

Hi David,

The following snippet should do what you need:

    vtkImageData* cachedImage = ...;
    int width = cachedImage->GetDimensions()[0];
    int height = cachedImage->GetDimensions()[1];
    QImage qImage(width, height, QImage::Format_RGB32);
    QRgb* rgbPtr = reinterpret_cast<QRgb*>(qImage.bits());
    unsigned char* colorsPtr = reinterpret_cast<unsigned
char*>(cachedImage->GetScalarPointer());
    for(int i = 0; i < width * height; ++i)
      {
      *(rgbPtr++) = QColor(colorsPtr[0], colorsPtr[1], colorsPtr[2]).rgb();
      colorsPtr +=  3;
      }

Regards,
Julien.

On Fri, Sep 16, 2011 at 3:24 PM, David Doria <daviddoria at gmail.com> wrote:

> This class convers a QImage to a vtkImageData. Has anyone see or written a
> class to do the inverse - convert a vtkImageData to a QImage?
>
> Thanks,
>
> David
>
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