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VB graphics

  • 02-08-2006 8:31am
    #1
    king_of_inismac
    Registered Users, Registered Users 2 Posts: 1,368 ✭✭✭


    Hey Guys,

    I'm working on this project at the moment in college which requires me to measure the temperature at different points on a persons hand (don't ask!)

    Anyway, I've set up the sensors, coded the microcontroller, and now I'm trying to create a gui in VB to display the data.

    I've setup the mscomm serial interface and I'm acquiring the data correctly.

    Now, what I'd like to do is display a hand on my vb form, and have the colour of the different regions of the hand change with temperature; so the hottest part of the hand would be white and the coldest would be black.

    The hand would be divided into three defined regions, and a different colour defiining the temperature in that region.

    Would anyone know the best way to implement this in VB6?

    Thanks,
    Martin


Comments

  • #2
    iascanmore
    Closed Accounts Posts: 79 ✭✭iascanmore


    Martin,

    I've only ever used the API fucntions within GDI32 when it comes to doing any serious graphics in VB.

    I suspect you'll need to do the same.

    There's a set of polygon functions which you could use - draw 4 of them, the hand and then 3 regions within, thus you'll be able to colour the regions seperately.

    This is merely the first solution I thought of - there are loads of approaches to such a issue, give that a try and let us know how you get on.

    Edit:
    Starting point: http://www.developer.com/net/vb/article.php/610261


  • #3
    amen
    Registered Users, Registered Users 2 Posts: 2,781 ✭✭✭amen


    our just create some bitmaps in different colours and load the relevant one to screen
    might be easier then messing with GDI


  • #4
    iascanmore
    Closed Accounts Posts: 79 ✭✭iascanmore


    Would be a pain to create each region of the hand in each colour though - possibly 20+ bitmaps. Would be a pain to change/enhance the colour range aswell. Eg Start out with with 6 colours from white to black - slotting a 7th in would be a right pain.

    Added to the issues with re-sizing such a form and the pain of distributing all those bitmaps aswell.

    The GDI functions are not that difficult to use...no resizing issues. Use an INI file/table/even the registry to hold your temp ranges and colours and you can chop and change at will.


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