[SOLVED] CopyRect issue?
lazarus / 39-Graphics

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JasonLugg · 2017-08-22 11:23

Hi All and thx in advance.

I am coding a little sprite editor app but am having problems with
CopyRect.

When I do the following:
SprSheetImg.Canvas.CopyRect(Rect(504,441,576,504),ClipBoardPanel.Canva
s, rect(4,4,76,67) );
It works correctly.

However, when the SrcRect & DestRect are calculated as below:
SprSheetImg.Canvas.CopyRect(RectToPaste,ClipBoardPanel.Canvas,
RectToCopy);

It does not 'copy' correctly, even though in debugging both tRects
hold the correct values?

Any ideas why this may be?

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taazz · 2017-08-22 12:25

that is not possible. If you take in to account that Code: Pascal
 [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i
 Rect(504,441,576,504) is a call to a function that returns a rect
that makes it a calculated rect as well. There is no way that the two
calls showcased here are equivalent if they do not create the same
results.

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JasonLugg · 2017-08-24 08:15

I get what you are saying and agree about rect(t,l,r,b) calling a
function. However when I hard code the numbers in, it works
however,when the rects are calculated, i.e CopyRect & PasteRect are
filled elsewhere (the values in them are correct as I have debugged
them and stepped thru to check the vals) it does  not work?

Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i     if
PopUpPaste.Enabled then     begin      //Calculate the rectangle for
the paste to space       RectToPaste:=CalcCurrentSprRect();      
//For debugging purposes      Edit6.Text:=inttostr(RectToPaste.Left)+'
,'+inttostr(RectToPaste.Top)+','+inttostr(RectToPaste.Right)+','+intto
str(RectToPaste.Bottom);       //This WORKS!       //SprSheetImg.Canva
s.CopyRect(Rect(504,441,576,504),ClipBoardPanel.Canvas,
rect(4,4,76,67) );       //THIS DOES NOT?     
 SprSheetImg.Canvas.CopyRect(RectToPaste, ClipBoardPanel.Canvas,
rect(4,4,76,67) );       //Explode the pasted image     
 ActSizeExploded();       ActSizeToSpriteSheet(iSpriteNumber);     
 SprSheetImg.Refresh;     end;

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Blaazen · 2017-08-24 11:19

QuoteI get what you are saying and agree about rect(t,l,r,b) calling a
function.Correct order is Left, Top, Right, Bottom. I agree with
taazz. It seems to some overlook or something dumb.

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JasonLugg · 2017-08-29 18:38

As mostly is the case...it was my error! Thanks for you help!