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Need help drawing polygon/rectangle/graphics onto equirectangular photosphere image RRS feed

  • Question

  • Hello All,

    It's been a while since I last visited the forums. I am curious to know if anyone here has any experience with modifying the pixel data of a panoramic image. I know you can simply modify the bitmap, since that is essentially all that it is, but I would like to draw a polygon onto the rendered 3d sphere, and have the equirectangular source image modified, which is not as simple as a mere graphics edit. I don't have anywhere to start with source code because I don't have any clue where to start, hoping to run into someone who knows.....

    If you look below, Image1 is being rendered as a panoramic image(equirectangular). Image 2 shows the raw panoramic image. You can see how in image one the red line is one contiguous object(roughly because I edited this with ms paint), where as in the raw panoramic image, the line distorted, and since it's on the ceiling, it isn't even connected. I chose the ceiling for this example to outline how editing this as a raw image wasn't really possible. I need to edit this image while it is rendered 3d, and have those edits reflect back to the source image...



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    • Edited by Paul Ishak Monday, July 6, 2020 7:15 PM
    Monday, July 6, 2020 5:58 PM

All replies

  • Hi Paul Ishak,

    Thank you for posting here.

    Maybe you need some tools to help you do this. Here are two references about drawing 3D polygon:

    1. Drawing 3D polygon on unity 3d
    2. OpenGL - Draw non planar 3D polygon consisted of a set of points

    Hope the ideas in references could be helpful.

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    Best Regards,

    Xingyu Zhao


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    Wednesday, July 8, 2020 2:30 AM