2d image in a qt3d scene

[sunil.nair]

Hi, I am trying to include a 2d image in my qt3d scene node. I do not want to open the image in a separate window. I want to include it in the scene where my camera and cube is lying. I tried to use QPixmap.

@void CubeView::paintGL(QGLPainter *painter)
{
cube->draw(painter);
QPixmap *img;
img->load("D:\opencv\blackcircle.jpg");
cube->draw(img);
}@

How can I include it in my scene? Thanks

[Chris Kawa]

Hi,

Are you new to c++? You are calling load on an uninitialized pointer.

Also what type is cube? I doubt that it has draw() methods that take both a painter and a pixmap. These are separate concepts.

Do you want to texture the cube with that pixmap or display it separately on a piece of geometry?

[sunil.nair]

Cube is an object of class cubeview.
@#ifndef CUBEVIEW_H
#define CUBEVIEW_H

#include "qglview.h"

QT_BEGIN_NAMESPACE
class QGLSceneNode;
QT_END_NAMESPACE

class CubeView : public QGLView
{
Q_OBJECT
public:
CubeView(QWindow *parent = 0);
~CubeView();

protected:
void paintGL(QGLPainter *painter);

private:
QGLSceneNode *cube;
QGLTexture2D *texture;
};

#endif@

The following code puts the image as a texture on the cube.

@#include "cubeview.h"
#include "qglbuilder.h"
#include "qglcube.h"

#include <QtCore/qurl.h>

CubeView::CubeView(QWindow *parent)
: QGLView(parent)
, cube(0)
, texture(0)
{
QGLBuilder builder;
builder << QGL::Faceted << QGLCube(1.5f);
cube = builder.finalizedSceneNode();

QGLMaterial *mat = new QGLMaterial;
mat->setColor(QColor(170, 202, 0));
QUrl url;
url.setPath(QLatin1String(":/qtlogo.png"));
url.setScheme(QLatin1String("file"));
mat->setTextureUrl(url);
texture = mat->texture();
cube->setMaterial(mat);

cube->setEffect(QGL::LitDecalTexture2D);

}

CubeView::~CubeView()
{
texture->cleanupResources();
delete cube;
}

void CubeView::paintGL(QGLPainter *painter)
{
painter->modelViewMatrix().rotate(45.0f, 1.0f, 1.0f, 1.0f);
cube->draw(painter);
}
@

I want to display an image in the scene. But not as a texture on the cube. How should I do it?

[edit: corrected coding tag position SGaist]