Drawing 2D Rect behind GUI element? [resolved]

[shurijo]

Maybe I just missed it or I haven't had enough to eat today, but I can't get a 2d rectange to draw before the GUI draws. Below is my device->run() code.

If I move the draw2dRectangle to before env->drawAll() then it doesn't draw at all. I'm thinking that the GUI env clears the display then draws, so it is drawing, but I just can't see it. When I draw it after env->drawAll, then it covers my items.

Works - draws box in front/on top of GUI items

Code: Select all

driver->beginScene(true, true, irr::video::SColor(0,0,0,0));
env->drawAll();
driver->draw2DRectangle(irr::video::SColor(225,209,199,73), irr::core::rect<irr::s32>(20,175,250,450));
driver->endScene();

Doesn't Work (switching drawAll and draw2dRectangle)

Code: Select all

driver->beginScene(true, true, irr::video::SColor(0,0,0,0));
driver->draw2DRectangle(irr::video::SColor(225,209,199,73), irr::core::rect<irr::s32>(20,175,250,450));
env->drawAll();
driver->endScene();

[Chev]

The only idea I have is putting a scenemanager->drawAll(); before your env->drawAll();

[shurijo]

The only idea I have is putting a scenemanager->drawAll(); before your env->drawAll();

Tried inserting the smgr->drawAll() and the 2D Rect didn't draw anywhere.

Code: Select all

			
driver->beginScene(true, true, irr::video::SColor(0,0,0,0));
driver->draw2DRectangle(irr::video::SColor(125,209,199,73), irr::core::rect<irr::s32>(20,175,250,450));
device->getSceneManager()->drawAll();
env->drawAll();
driver->endScene();

Also tried ...

Code: Select all

			
driver->beginScene(true, true, irr::video::SColor(0,0,0,0));
device->getSceneManager()->drawAll();
driver->draw2DRectangle(irr::video::SColor(125,209,199,73), irr::core::rect<irr::s32>(20,175,250,450));
env->drawAll();
driver->endScene();

[shurijo]

I also just experimented with IGUIElement::bringToFront(), but I couldn't get that to work either.

[Masdus]

okay i'm not quite sure what you are trying to do here, is the rectangle covered by the gui items, or are you trying to create some sort of background?

[shurijo]

I'm trying to put the rectange behind the GUI items.

Imagine there are two 2d rectangles on screen. A blue one and a red one. Then I want to put a few GUI elements on top of each rectangle (having the rectangle behind the GUI item).

[rt]

I'm trying to put the rectange behind the GUI items.

Imagine there are two 2d rectangles on screen. A blue one and a red one. Then I want to put a few GUI elements on top of each rectangle (having the rectangle behind the GUI item).

you could billboard a simple texture.. that would have the effect of drawing a box behind the gui elements.

[shurijo]

Status update (for future people that search for forums). I figured it out...

First, I draw my background image, then my rectangles, then my GUI environment. And it works!

Code: Select all

driver->beginScene(true, true, irr::video::SColor(0,0,0,0));
driver->draw2DImage(imgBackground, irr::core::position2d<irr::s32>(0,0) );
driver->draw2DRectangle(irr::video::SColor(255,209,199,73), irr::core::rect<irr::s32>(20,175,250,450));
env->drawAll();
driver->endScene();

My problem was that my background image was a GUIImage, so it was getting drawn over the rectangles on the env->drawAll() event...

[Masdus]

great work, i should mention here for future people that guiImage should no be used for backgrounds. In Fact draw2Dimage is a superior command for almost any use. GUIImages existed before the draw2Dimage was added to the engine (i think it was 0.4 or 0.42) so in a way i guess draw2Dimage replaces GUIImage.