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 Topic  |
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sungho
Korea
14 Posts |
 Posted - Mar 25 2013 : 20:33:32
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Hi.
Program development to adjust the contrast / brightness mouse move.
Smooth image processing using the code(1).
// 1
void __fastcall TForm1::ImageEnView1MouseMove(TObject *Sender, TShiftState Shift, int X, int Y)
{
if( Shift.Contains(ssLeft)) {
// left/right
if (prex < X) {
if (ncontrast < 100) ncontrast++; // contrast -100 - 100 0 : no change
}
if (prex > X) {
if (ncontrast > -100) ncontrast--;
}
this->ImageEnView2->IO->IEBitmap->Contrast = ncontrast; // contrast
this->ImageEnView2->IO->Update();
// up/down
// Brightness 512 - 100 0 : No Change
if (prey > Y) {
if (nbright < 512) nbright++;
}
if (prey < Y) {
if (nbright > -100) nbright--;
}
ImageEnView2->IO->IEBitmap->ChannelOffset[0] = nbright; // red
ImageEnView2->IO->IEBitmap->ChannelOffset[1] = nbright; // green
ImageEnView2->IO->IEBitmap->ChannelOffset[2] = nbright; // blue
this->ImageEnView2->IO->Update();
}
prex = X;
prey = Y;
}
//---------------------------------------------------------------------------
But you use the mouse to move the image processing code(2) below Motion does not run smoothly.
// 2
void __fastcall TForm1::ImageEnView1MouseMove(TObject *Sender, TShiftState Shift, int X, int Y)
{
if( Shift.Contains(ssLeft)) {
// left/right
if (prex < X) {
if (ncontrast < 100) ncontrast++; // contrast -100 - 100 0 : no change
}
if (prex > X) {
if (ncontrast > -100) ncontrast--;
}
// up/down
// Brightness 512 - 100 0 : No Change
if (prey > Y) {
if (nbright < 512) nbright++;
}
if (prey < Y) {
if (nbright > -100) nbright--;
}
ImageEnView1->Proc->Undo();
this->ImageEnView1->Proc->AdjustBrightnessContrastSaturation(nbright, ncontrast, 0);
this->ImageEnView1->Proc->Update();
}
prex = X;
prey = Y;
}
//---------------------------------------------------------------------------
Code 1)
Fast image processing buf can not save the file.
Code 2)
Slow image processing and it can be save the file.
Questions
If you dont mind, would you send the code which can have fast image processing with save file function in the mouse move.
Looking forward to your earlist response.
Best Regards.
Thanks. |
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fab
1310 Posts |
Posted - Mar 29 2013 : 03:23:31
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At the moment the two options (code 1 and 2) are the unique possibilities.
Starting from next minor release there will be two new methods of TIEBitmap, which allows Contrast and ChannelOffset properties to make permanent changes to the bitmap. |
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HI. Mouse Interact contrast/brightness.
