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Thread: 2D Coordinate point update, spot tracking, positioning, navigation

  1. #1
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    Default 2D Coordinate point update, spot tracking, positioning, navigation

    Hi,

    I want to draw a black background color screen with an origin in the center to show a position tracking green spot, with delta X/Y accumulation data retrieved from Optical-Flow Sensor.

    Now a solution I can think of is to use QImage to manipulate pixels and draw it onto the screen, creating my own coordinate.
    Is there any QClass I can use to help me draw the a coordinate, and locate a certain spot much easier?

    Are there any examples similar to a spot tracking problem that I can refer to?

    Thank you!

  2. #2
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    Default Re: 2D Coordinate point update, spot tracking, positioning, navigation

    The QGraphicsScene and QGraphicsView in the Qt Graphics View Framework might be useful.

  3. #3
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    Default Re: 2D Coordinate point update, spot tracking, positioning, navigation

    QWidget has its own coordinate system, no need to build.
    There is a Analog Clock Example, which can totally answer my question.

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