Please help. Speed problem.....

Discussion in 'Questions (Windows Mobile)' started by TARQ, Apr 24, 2008.

  1. TARQ

    TARQ Member Licensed User

    Hello all,

    I need some help.
    I'm making some GPS software, and now i wat to show a compass needle.
    I first tried it with 2 image controls. One would be invisible and contain the original image, the other would contain a rotated version using the FastRotate from the DZImage lib using the heading degrees for the rotating. This however would result in a memory error after a minute or 2.

    So i tried another approach. I generated 361 images (for 0 to 360 degrees) and embedded them in one file.
    Now when the program loads, it takes a long time to load them into an imagelist (using retreiveimage). Is there not a faster way to do this?
     
  2. dennishea

    dennishea Active Member Licensed User

  3. TARQ

    TARQ Member Licensed User

    :sign0013: Ah, Thanks. Missed that one.....:sign0060:
     
  4. Georg

    Georg Member Licensed User

    If you want to rotate the Compass picture it works very well with

    Sub Rotate (course)
    degree = 361 - course
    Image25.Image = dr.FastRotateImage(Image26.Image, degree)
    End Sub

    dr. from dzImage
    sorry it works only in the interpreter version not in the compiled version.
    Georg
     
    Last edited: Apr 25, 2008
  5. TARQ

    TARQ Member Licensed User

    No Problem Georg. I already got a working solution derrived from the info from dennishea.

    Thanks
     
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