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AhmedSaleh

OpenGL Drawing a Texture into a Grid

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Hi All,
I've managed to drawing an n*n 3D Cubes, and I also got a frame from a webcam using opencv, I would like to map my webcam image into that n*n grids .

Here is how I drew my cubes
[code

void ocvCaptureApp::draw()
{

if( ! mTexture )
return;
gl::clear( Color::black() );
//mTexture.bind();
glPushMatrix();
gl::multModelView( mCubeTranslation );



int x1 = BLOCK_ORIGIN_X, // used to track current position
y1 = BLOCK_ORIGIN_Y;

// draw all the blocks
for (int row=0; row < NUM_BLOCK_ROWS; row++)
{
// reset column position
x1 = BLOCK_ORIGIN_X;

// draw this row of blocks
for (int col=0; col < NUM_BLOCK_COLUMNS; col++)
{
// draw next block (if there is one)
if (mCubes[row][col]!=0)
{

gl::color(234,33,44,11);
// draw block
gl::drawCube( Vec3f(x1-1.0f,-1,y1+1.0f), Vec3f( 2.0f, 2.0f, 2.0f ) );

} // end if
// advance column position
x1+=BLOCK_X_GAP;

} // end for col

// advance to next row position
y1+=BLOCK_Y_GAP;

} // end for row

glPopMatrix();

}

]


here is how I can get an opengl texture using OpenCV


void ocvCaptureApp::update()
{
if( mCap && mCap.checkNewFrame() ) {
mTexture = gl::Texture( mCap.getSurface() );
}
}

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