ofxCubeMap

Addon for working with Cube Maps in openFrameworks

Usage:

To load some images into a cubemap:

myCubeMap.loadImages( "Cubemaps/SummerScene/cubescene_rt.jpg", "Cubemaps/SummerScene/cubescene_lf.jpg", "Cubemaps/SummerScene/cubescene_up.jpg", "Cubemaps/SummerScene/cubescene_dn.jpg", "Cubemaps/SummerScene/cubescene_fr.jpg", "Cubemaps/SummerScene/cubescene_bk.jpg" );

Then to draw it:

myCubeMap.bind(); myCubeMap.drawSkybox( 800 ); myCubeMap.unbind();

It can also be drawn using the supplied shader doing something like:

myCubeMap.bind();

cubeMapShader.begin(); cubeMapShader.setUniform1i("EnvMap", 0);

myCubeMap.drawSkybox( 800 );

cubeMapShader.end();

myCubeMap.unbind();

To initialise an FBO based cubemap that you can draw into:

myFboCubeMap.initEmptyTextures( 512 );

To draw into it in 2D, this will clear each face to black and draw a line from one corner to the other

for( int i = 0; i < 6; i++ ) { myFboCubeMap.beginDrawingInto2D( GL_TEXTURE_CUBE_MAP_POSITIVE_X + i );

ofClear(0,0,0);

ofLine(0,0, myFboCubeMap.getWidth(), myFboCubeMap.getHeight() ); ofLine(myFboCubeMap.getWidth(), 0, 0, myFboCubeMap.getHeight() ); myFboCubeMap.endDrawingInto2D(); }

If you want to draw your 3D scene into it, you can place it in the scene:

myFboCubeMap.setPosition( 0.0f, 40.0f, 0.0f );

And then you can draw the 3D scene into it like so:

for( int i = 0; i < 6; i++ ) { myFboCubeMap.beginDrawingInto3D( GL_TEXTURE_CUBE_MAP_POSITIVE_X + i );

ofClear(0,0,0); drawScene();

myFboCubeMap.endDrawingInto3D(); }

Examples coming when I get a chance.