Rotate Image-2D

[_willa]

I do not understand after multiple tests as you can rotate a picture 2d
I tested "driver-> draw2DImage" but neither works.

Code: Select all

    video::ITexture* images = driver->getTexture("../../media/2ddemo.bmp");
    
   	scene::ISceneNode* image2d = smgr->addBillboardSceneNode(0,irr::core::dimension2d<f32>(50,50));
    image2d->setMaterialTexture(0, driver->getTexture("../../media/particlewhite.bmp"));
  
	image2d->setMaterialFlag(video::EMF_LIGHTING, false);
	image2d->setMaterialType(video::EMT_TRANSPARENT_ADD_COLOR);
	
        while(device->run() && driver)
        {
            driver->beginScene(true, true, video::SColor(255,120,102,136));
			
			/*  driver->draw2DImage(images, core::position2d<s32>(780,60), core::rect<s32>(10,10,300,200),0,
                                video::SColor(255,(time) % 255,255,255), true); */

			image2d->setRotation(image2d->getRotation()+vector3df(0,0.1,-0.05));
			smgr->drawAll();
			driver->end();
		}

someone knows how to do it ?

[hybrid]

A billboard turns automatically towards the camera, so there's no reason one would rotate it - it's overwritten in the drawAll call anyway. You should simply use a quad with an IMeshSceneNode, this will support arbitrary rotations.

[_willa]

I do not understand your answer
you mean something like

Code: Select all

	IVideoDriver* driver = device->getVideoDriver();
	ISceneManager* smgr = device->getSceneManager();
	IGUIEnvironment* guienv = device->getGUIEnvironment();
	
	IMesh* mesh = smgr->getMesh("../../media/particlewhite.bmp");
	scene::IMeshSceneNode* image2d = smgr->addMeshSceneNode(mesh);
	
while(device->run() && driver)
    {
        driver->beginScene(true, true, video::SColor(255,120,102,136));
		image2d->setRotation(image2d->getRotation()+vector3df(0,0.1,-0.05));
		smgr->drawAll();
		driver->end();
	}

[JP]

You need to make a quad mesh somehow. Either with addHillPlaneMesh or by using a modelling package. Then you would pass that mesh to addMeshSceneNode.

getMesh(x.bmp) is pure rubbish i'm afraid...

[CuteAlien]

Simple 2D image rotations are currently not supported by Irrlicht. So you have to texture some polygons and rotate those instead - or hack the engine yourself by changing the draw2DImage functions.

[_willa]

I have been trying various ways, including by example "2DGraphics" included in ".. \ examples" and can not get to work with rotations in 2d images.


Based on the example of "2DGraphics" and included the following code.

Code: Select all

	scene::ISceneNode* playerNode = smgr->addEmptySceneNode();           
	playerNode->setMaterialFlag(EMF_LIGHTING, false);
	playerNode->setMaterialTexture( 0, driver->getTexture("../../media/portal1.bmp") );
    playerNode->setPosition(vector3df(100, 5, -5)); 
	playerNode->setMaterialType(video::EMT_SOLID );

while(device->run() && driver)
{
          driver->beginScene(true, true, video::SColor(0,120,102,136));
         // ...  
	                playerNode->setRotation(playerNode->getRotation()+vector3df(0,.5,0)); 
         // ...
	driver->endScene();
}

But the texture is still not rotate!!!

Somebody know how to do this ?

I just want to rotate an image 2d in a plane.
Thank you

[Castaa]

Billboard nodes should be able to be rotated along the axis facing the camera? To spin them clock or counterclock wise right?

[rogerborg]

They "should" be able to do that, but they currently can't.

There's a whole slew of changes waiting on 1.5 to be released, including more flexible billboards, so if you want to see feature updates, please checkout and help test 1.5.

[Castaa]

They "should" be able to do that, but they currently can't.

There's a whole slew of changes waiting on 1.5 to be released, including more flexible billboards, so if you want to see feature updates, please checkout and help test 1.5.

Thank you for the reply and tip