resizing irr's window, graphic's ratio will be changed!

[michael520]

when I resize the window, the graphics ratio will be changed,too. Objects become longer or taller, which I don't want!

I try to drop and recreate the device, than the ratio would be correct.
But recreating device costs too much time and the window would twinkle a lot!

I wonder if there's any way to solve this problem?

[luckymutt]

I tried to account for this by using variables when stating the size of the window and irrlicht device. Although i was putting Irrlicht inside a win32 window to do so.
That was working fine as far as changing the window size and everything looking ok, however, it *really* screwed up the fps camera - you lost control of the camera and it would just move it self upward.
Here's a thread i started in the bug reports section that has a bit of code for the window resizing:
http://irrlicht.sourceforge.net/phpBB2/ ... hp?t=10742

Feel free to try it out and see what happens for you. It won't work correctly, but maybe it can get you on your way (or maybe you can figure out the camera bug!)

[michael520]

after resizing the window, just do the following:

GetClientRect(&rect);
driver->OnResize(irr::core::dimension2d<irr::s32>(rect.right, rect.bottom));

this will tell the driver to set the new window's size correctly!!

[michael520]

sorry, the way above still have problems: the model's width-height ratio is still incorrect when resizing window.

[mandrav]

This is what I have in my OnSize() function:

Code: Select all

void wxIrrlicht::OnSize(wxSizeEvent& event)
{
    s32 w;
    s32 h;
    GetClientSize(&w, &h);

    dimension2d<s32> size(w, h);
    m_pDriver->OnResize(size);

    if (m_pCameraNode)
        m_pCameraNode->setAspectRatio((float)h / (float)w);
}

As you see, besides calling OnResize(), you must also call setAspectRatio() on the camera node...

[michael520]

Thanks, mandrav!! It works!!

[ultramedia]

I found the w and h were around the wrong way...
but other than that, extremely useful, ta heaps

[humorstar]

If I am only using GUI provided by irrlicht, not using wxWidget, MFC or other similar stuff, how can I capture this OnSize or OnResize event, so that I can set my camera setting?

Thank you,

This is what I have in my OnSize() function:

Code: Select all

void wxIrrlicht::OnSize(wxSizeEvent& event)
{
    s32 w;
    s32 h;
    GetClientSize(&w, &h);

    dimension2d<s32> size(w, h);
    m_pDriver->OnResize(size);

    if (m_pCameraNode)
        m_pCameraNode->setAspectRatio((float)h / (float)w);
}

As you see, besides calling OnResize(), you must also call setAspectRatio() on the camera node...