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Thread: Skew bitmap to QPolygonF

  1. #1
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    Default Skew bitmap to QPolygonF

    Hi,

    I just want to make sure I do not overlook something in the documentation. I have a QPolygonF that defines a non-rectangular shape and would like to fit a QImage or QPixmap into that shape by moving the pixels. I would expect such a functionality in QPainterPath or QGraphicsSceen but couldn't find anything. Am I too stupid to read the documentation? Or is it simply missing and I have to code that stuff on my own?

    Thanks

    Oliver

  2. #2
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    Default Re: Skew bitmap to QPolygonF

    I have to code that stuff on my own?
    You have an ill-defined problem, if your QPolygonF can be arbitrarily complex. Images are in general rectangular. You can apply an arbitrary QTransform to a QImage (see QImage::transformed()), but this is only for 4-sided to 4-sided transformations.

    Otherwise, you may find what you need in non-Qt libraries, like OpenGL or OpenCV.

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