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  1. Replies
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    Re: [RESOLVED] FIle Exists

    http://www.vbforums.com/showthread.php?709377-GetAttr()-to-check-if-a-file-exists-ove-a-network&p=4340195&viewfull=1#post4340195

    Public Function FileExists(ByRef sFileName As String) As Boolean
    ...
  2. Re: Your first BASIC computer? Has your software survived?

    Commodore VIC 20
  3. Thread: Program Testers

    by reexre
    Replies
    142
    Views
    82,484

    Re: Program Testers

    I made a second version of the xPainter module.
    Here you can see the first result.
    (Maybe I will make some changes)
    The xPainter2 module will be available in the next update

    ...
  4. Thread: Program Testers

    by reexre
    Replies
    142
    Views
    82,484

    Re: Program Testers

    UPDATED

    DOWNLOADS

    - SoftPedia ZIP (may take some days to be updated)
    - ZIP


    Update 0.3.2000 (28-May-2019)
    [Modules]
  5. Replies
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    Re: Rotation using DOT product

    The article I post at #7 also has a source code that can be compared. http://marctenbosch.com/quaternions/code.htm

    At first look it seems that the difference is more than anything ...
  6. Replies
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    Re: Rotation using DOT product

    http://marctenbosch.com/quaternions/


    https://www.youtube.com/watch?v=syyK6hTWT7U
  7. Replies
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    Re: Rotation using DOT product

    Yes,
    VR.X = DOT(V1, Vec2(N.X, -N.Y))
    VR.Y = DOT(V1, Vec2(N.Y, N.X))

    since:
    N.X= Cos
    N.y= Sin

    It's like Rotation Matrix:
    |Cos -Sin|
  8. Replies
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    626

    Re: Rotation using DOT product

    Yes, I suppose they are the optimal choice, but I think it's still too early for me to understand / manage them.

    So ... I was thinking if there is a similar way (always using DOT or Cross Product)...
  9. Replies
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    626

    Rotation using DOT product

    This is not a question, just a suggestion.

    Suppose we have to rotate a vector by an angle given by another vector.
    Instead of performing a classic rotation that takes into account sine and...
  10. Re: [VB6] Simple SPH (smoothed particles hydrodynamics)

    3D Version on GitHub since today.

    now 3D version (V.5) has an improved camera that can manage lines which have one of its points that goes behind the camera by using "near-clipping-plane"...
  11. Replies
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    Re: Favour Pentium Pro

    Nowadays, does anyone have opinions about it ? (check / uncheck?)
  12. Re: VB6 Borderless Forms with PNG- and full Alpha-Support

    Very cool

    I'd like to understand how the Cairo.CreateMatrix works. ( Which is the meaning of its parameters)

    I noticed that the globe does not look like a sphere, it is, as I might say, "more...
  13. Re: [VB6] Simple SPH (smoothed particles hydrodynamics)

    3D version in post #1
  14. Re: [VB6] Simple SPH (smoothed particles hydrodynamics)

    @wqweto

    This is my new test.
    I added an Attraction to Global Center of Mass
    Thanks for the suggestion.
    Quite near your Planets demo... but I don't think I'll go more further

    ...
  15. Re: [VB6] Simple SPH (smoothed particles hydrodynamics)

    SPH 3D
    I added the third dimension.
    soon I will publish it.
    after some refining.

    https://www.youtube.com/watch?v=OMI5zWZb4Xg
  16. Replies
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    Re: how can I write this function in vb6?

    Hello
    you can find inspiration from this

    Create a new project with an empty Form.
    Add a Timer1 control with an inverval of 500 (half second) (Enabled)
    Copy and paste this code to it.

    ...
  17. Thread: Program Testers

    by reexre
    Replies
    142
    Views
    82,484

    Re: Program Testers

    Thank you for your interest.

    Do you mean backwards compatibility or a specific windows version ?

    About backwards compatibility there should not be any problem.
    You can download the ZIP file...
  18. [VB6] Simple SPH (smoothed particles hydrodynamics)

    Simple SPH

    SPH is a technique for simulating fluids.

    I think this is the simplest 2D implementation of SPH

    It uses a slightly modified Spatial grid to detect the pairs of particles to be...
  19. [VB6] Simple SPH (smoothed particles hydrodynamics)

    Sorry! something went wrong (while posting)

    this is correct location
    http://www.vbforums.com/showthread.php?874193-VB6-Simple-SPH-(smoothed-particles-hydrodynamics)



    MODERATORS please...
  20. Replies
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    Re: [RESOLVED] Database Encryption

    @wqweto
    I tried your zipArchive.
    For me it works very well but I found a problem that I think is good to point out. As it could damage files.
    Without encryption it seems to me to work perfectly....
  21. Replies
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    Re: [RESOLVED] Ideas for Speed-Up

    ????????????????

    Screenshot of my outout from Post 14
    167653
  22. Re: [VB6] Spatial Grid for 2D collision detection

    thanks I resolved the problem doing as you said.
  23. [VB6] Spatial Grid for 2D collision detection

    SPATIAL GRID for 2D COLLISION DETECTION

    Author: reexre, MiorSoft
    (04/2019)

    When having a lot of objects (2D) collision detection may be computionally very expensive.
    In this case when I talk...
  24. Re: [RESOLVED] Best way to Smooth/Contour an image (or whatever it's called

    Thanks, Yes, It is slower by increasing Kernel radius. Not sure if linearly. For big radii it seems the case.

    EDIT:
    Good of my algorithm is that can be easily adapted to perform Circle shaped...
  25. Re: [RESOLVED] Best way to Smooth/Contour an image (or whatever it's called

    @wqweto
    if you want take a look at my VB6 implementation of Median Filter.

    if you could define the algorithm asymptotic complexity of it I'd be glad. Thanks
  26. Replies
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    Re: Ideas for Speed-Up

    Fast Median Filter using Local Histograms


    First of all, to understand how the algorithm works let's take a single pixel cell with its neighbors.
    xF xT yF and yT defines the square.
    Xfrom, Xto,...
  27. Re: [RESOLVED] Best way to Smooth/Contour an image (or whatever it's called

    @wqweto
    honestly, it is not of my interest to make a VB6 vs. ASM performance comparison.
  28. Re: Best way to Smooth/Contour an image (or whatever it's called

    As I said there is an algorithm that do NOT use sorting. It use local histograms... Google for median filter histogram.

    Sorry , about my time performance complexity ... I have no clear idea on...
  29. Re: Best way to Smooth/Contour an image (or whatever it's called

    This thread gave me the opportunity to review my median filter algorithm.
    So I have improved it. If current version take a time T, the new one take about a time sqr(T)*2.
    To have a faster...
  30. Re: Best way to Smooth/Contour an image (or whatever it's called

    Duplicate...
  31. Thread: Program Testers

    by reexre
    Replies
    142
    Views
    82,484

    Re: Program Testers

    167365

    Median filter is a filter I've never been crazy about.
    I implemented it a few years ago, so I took the opportunity to review my algorithm.
    I've improved it now, and it's much faster for...
  32. Re: Best way to Smooth/Contour an image (or whatever it's called

    Now I have not an appropriate grayscale picture, but following my tip ( to use grayscale source and apply heat map at the end ) in my opinion leads to nicer results.
    Example with pixellation 8pix...
  33. Re: Best way to Smooth/Contour an image (or whatever it's called

    A little important suggestion:
    It should bring better result doing the main job on grayscale image and THEN apply "heat" / "rainbow" palette map.

    +this way you can gain 2/3 of speed processing...
  34. Re: Best way to Smooth/Contour an image (or whatever it's called

    I think that to enlarging will bring to a (unpleasant) blurred image whatever interpolation used.167323
    (better median filter, not difficult to implement, but keeping in mind that it has the...
  35. Re: Best way to Smooth/Contour an image (or whatever it's called

    I confirm that the median filter should be the simpler way to go.
    I'd omit the term "circular" because a disk-shaped kernel has little influence on the final result.

    This is the output of my...
  36. Thread: Program Testers

    by reexre
    Replies
    142
    Views
    82,484

    Re: Program Testers

    UPDATED

    DOWNLOADS

    - SoftPedia ZIP (may take some days to be updated)
    - ZIP


    Update 0.3.1805 (30-Mar-2019)
    [Modules]
  37. Replies
    34
    Views
    10,824

    Re: VB6 Simple Async-Download-Ctl for multiple Files

    Now I remember
    Thank you !
    I hope at least it works with the URL not yet tested.
  38. Replies
    34
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    10,824

    Re: VB6 Simple Async-Download-Ctl for multiple Files

    Sorry, but I have a problem that I don't understand.
    I use this code to update the PhotoModularFX program, and to download project previews. (This is done on MouseOver a project in projectlist)...
  39. Thread: Program Testers

    by reexre
    Replies
    142
    Views
    82,484

    Re: Program Testers

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  40. Thread: Program Testers

    by reexre
    Replies
    142
    Views
    82,484

    Re: Program Testers

    I have implemented a technique that can perform a fairly fast blur of any shape.
    the speed is about the same as the current BlurCirc(3)-node.

    In next update
    BlurCirc;BlurCirc3 will be renamed...
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