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  1. Qt
  2. QTBUG-116807

QPainter draws Bezier curves incorrectly

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Details

    • Bug
    • Resolution: Fixed
    • Not Evaluated
    • None
    • 5.12, 5.15, 6.2, 6.5
    • GUI: Painting
    • None
    • All

    Description

      When using QPainter to draw the Bezier curve, if the width of the QPen's width is 4, and the scale calculation of the coordinate system, it will be found that the width of the two Bezier curves is not consistent. But if QPen uses Qt::DashLine, their widths will look the same.

       

      Attachments

        1. 1694508940004.jpg
          1694508940004.jpg
          106 kB
        2. CubTo.zip
          6 kB
        3. CubTo-1.zip
          6 kB
        4. CubTo-2.zip
          6 kB
        5. image-2023-09-07-12-04-48-174.png
          image-2023-09-07-12-04-48-174.png
          677 kB
        6. image-2023-09-07-12-06-39-123.png
          image-2023-09-07-12-06-39-123.png
          645 kB

        Issue Links

          resulted in

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-116868 Suboptimal default path stroking curve threshold in some cases

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-116869 Suboptimal default path stroking curve threshold in some cases

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
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              vgt Eirik Aavitsland
              amos yang xiangyu
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              Dates

                Created:
                Updated:
                Resolved:

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