ScreenShot of an area of the screen

[xterminhate]

I'm using this portion of code to make a screenshot :

Code: Select all

IImage * img = driver->createScreenShot();
std::string filename = "xxx.png"; /// ...cut...
driver->writeImageToFile( img, filename.c_str() );
img->drop();

I would like to write in a PNG file an area of the screen. IImage interface do not allow to clip the image, how can I do ?

Thanks for help.

Xterminhate.

[bitplane]

You could use getPixel and setPixel (slow), or you could take CImage.h/cpp from the source directory and use the image copying constructor-

Code: Select all

	//! constructor using a part from another image
	CImage(IImage* imageToCopy,
		const core::position2d<s32>& pos, const core::dimension2d<s32>& size);

[hybrid]

Some more CImage methods will be exposed soon for Irrlicht 1.5. Also this one probably...

[xterminhate]

Thanks for your help.

Good news about IImage 1.5 !

[BlindSide]

Yeah I hope there will be functionality to actually create a blank CImage, I'm finding currently it's only possible by creating an actual hardware texture first then copying that to the image, or by manually allocating a block of memory, which can be tricky when you have to consider different colour formats etc.

Cheers