void RepulsionApp::setFboVelocities( gl::Fbo &fbo ) { Surface32f vel( fbo.getTexture() ); Surface32f::Iter it = vel.getIter(); while( it.line() ){ while( it.pixel() ){ Vec3f r = Rand::randVec3f() * 0.1f; it.r() = 0.0f;//r.x; it.g() = 0.0f;//r.y; it.b() = 0.0f;//r.z; it.a() = 0.0f; } } gl::Texture velTexture( vel ); velTexture.bind(); gl::setMatricesWindow( mFboSize, false ); gl::setViewport( mFboBounds ); fbo.bindFramebuffer(); mVelInitShader.bind(); mVelInitShader.uniform( "initTex", 0 ); gl::drawSolidRect( mFboBounds ); mVelInitShader.unbind(); fbo.unbindFramebuffer(); }
void CatalogApp::setFboPositions( gl::Fbo &fbo ) { int numBrightStars = mBrightStars.size(); int index = 0; Surface32f posSurface( fbo.getTexture() ); Surface32f::Iter it = posSurface.getIter(); while( it.line() ){ while( it.pixel() ){ Vec3f pos = Vec3f( 1000000.0f, 0.0f, 0.0f ); float col = 0.4f; float rad = 0.0f; if( index < numBrightStars ){ pos = mBrightStars[index]->mPos; col = mBrightStars[index]->mColor; rad = floor( constrain( ( ( 6.0f - ( mBrightStars[index]->mAbsoluteMag ) )/6.0f ), 0.3f, 1.0f ) * 3.0f * 1000 ); } it.r() = pos.x; it.g() = pos.y; it.b() = pos.z; it.a() = rad + col; index ++; } } gl::Texture posTexture( posSurface ); fbo.bindFramebuffer(); gl::setMatricesWindow( fbo.getSize(), false ); gl::setViewport( fbo.getBounds() ); gl::clear( ColorA( 0, 0, 0, 0 ), true ); gl::draw( posTexture ); fbo.unbindFramebuffer(); }
void RepulsionApp::setFboPositions( gl::Fbo &fbo ) { Surface32f pos( fbo.getTexture() ); Surface32f::Iter it = pos.getIter(); while( it.line() ){ while( it.pixel() ){ Vec3f r = mRoom.getRandRoomPos(); float mass = Rand::randFloat( 20.0f, 30.0f ); if( Rand::randFloat() < 0.05f ) mass = Rand::randFloat( 50.0f, 60.0f ); if( it.y() < 5 && it.x() < 50 ) mass = Rand::randFloat( 300.0f, 5000.0f ); else mass = Rand::randFloat( 50.0f, 300.0f ); it.r() = r.x; it.g() = r.y; it.b() = r.z; it.a() = 100.0f; } } gl::Texture posTexture( pos ); posTexture.bind(); gl::setMatricesWindow( mFboSize, false ); gl::setViewport( mFboBounds ); fbo.bindFramebuffer(); mPosInitShader.bind(); mPosInitShader.uniform( "initTex", 0 ); gl::drawSolidRect( mFboBounds ); mPosInitShader.unbind(); fbo.unbindFramebuffer(); }