Computer Science Canada

background and text blending help
Author:  Llathe [ Wed Nov 30, 2011 6:40 pm ]
Post subject:  background and text blending help
What is it you are trying to achieve?
I want to have put text on top of a background picture.

I'm very sorry if this has been asked before, i read the tutorial, but the answer wasn't there

What is the problem you are having?
The text creates a white bar. I want the text to be on top of the backgroud.
the image is a .jpg if that helps


Describe what you have tried to solve this problem
I have tried Font.New, it works, but I want it to update.
I also tried all the different modes for the picture.


Post any relevant code (You may choose to attach the file instead of posting the code if it is too long)


Turing:


Pic.Draw (background, 0, 0, 0)


I know its not much, but i don't think giving code will do much.
Please specify what version of Turing you are using
4.1.1
Author:  Tony [ Wed Nov 30, 2011 6:43 pm ]
Post subject:  RE:background and text blending help
Font.Draw is likely what you are looking for. Not sure what you mean by "update".
Author:  Llathe [ Wed Nov 30, 2011 6:47 pm ]
Post subject:  Re: background and text blending help
Sorry for not explaining it properly.
What i have is buttons that change the difficulty for a game I'm making.
I want at the bottom of the menu screen for the difficulty to display.
code:

loop
    exit when GUI.ProcessEvent
    locate (20, 20)
    put "Difficulty is set to: ", diffucltyDisplay
    end loop

I did it so that it will update as soon as you change the difficulty
When i do this with font draw it just rewrites the difficulty on top of the old one and looks like a mess.
Author:  Tony [ Wed Nov 30, 2011 6:57 pm ]
Post subject:  RE:background and text blending help
well yeah, you should clear the screen (or just that area) first.

The put statement, as you've said "creates a white bar". It would also just mess things up without it.
Author:  Llathe [ Wed Nov 30, 2011 7:10 pm ]
Post subject:  Re: background and text blending help
I can't seem to get it to work, is it possible for me to PM you the code, so you can have a look for your self? Embarassed
Author:  Tony [ Wed Nov 30, 2011 7:16 pm ]
Post subject:  RE:background and text blending help
no, I don't typically do that.

You could
Tony @ Wed Nov 30, 2011 6:57 pm wrote:
well clear the screen (or just that area)

code:

...
cls
redraw_everything
print_score
...
Author:  Llathe [ Wed Nov 30, 2011 7:31 pm ]
Post subject:  Re: background and text blending help
Sorry for all the trouble.
i tried
code:

loop
    exit when GUI.ProcessEvent
    Font.Draw (diffucltyDisplay, 10, 10, text, white)
    View.Update
    cls
    Pic.Draw (background, 0, 0, 0)
    menu % menu procedure
end loop


The outcome is very flashy, because its looping.
I tried placing
code:

    View.Update
    cls
    Pic.Draw (background, 0, 0, 0)
    menu

inside the difficulty button procedure, so that it updates only when it is changed, but then i can't
because the menu procedure comes after the difficulty button procedures.
Author:  Tony [ Wed Nov 30, 2011 7:34 pm ]
Post subject:  RE:background and text blending help
do you have offscreenonly set, for View.Update to work?
Author:  Llathe [ Wed Nov 30, 2011 7:37 pm ]
Post subject:  Re: background and text blending help
yes, i have
code:

View.Set ('offscreeonly, nobuttonbar,')
Author:  Tony [ Wed Nov 30, 2011 7:44 pm ]
Post subject:  RE:background and text blending help
odd. Try to find a minimal case for which the problem occurs. Is there flashing in
code:

View.Set("offscreenonly")
...
loop
   cls
   Pic.Draw (background, 0, 0, 0)
   Font.Draw (diffucltyDisplay, 10, 10, text, white)
   View.Update
end loop

?
Author:  Llathe [ Wed Nov 30, 2011 7:48 pm ]
Post subject:  Re: background and text blending help
The flashing is still there. I think its even faster, because the : exit when GUI.ProcessEvent was taken out.
Author:  Tony [ Wed Nov 30, 2011 7:56 pm ]
Post subject:  RE:background and text blending help
odd. I can't run Turing. Can someone else take a look to verify that this is broken?
Author:  Llathe [ Wed Nov 30, 2011 8:00 pm ]
Post subject:  Re: background and text blending help
Its not urgent.
A lot of things are placeholders right now.
Here is the source code.
Author:  Tony [ Wed Nov 30, 2011 8:02 pm ]
Post subject:  RE:background and text blending help
read carefully
code:

offscreeonly
Author:  Llathe [ Wed Nov 30, 2011 8:11 pm ]
Post subject:  Re: background and text blending help
Oh, I'm sorry for my carelessness. the flashing is gone.
There is another problem now. Embarassed
I added menu to the loop. Menu isn't appearing.
I'm not completely sure, but i think it is because of the back buffering.

:


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