nodes.get( 3 ).nodeSetOrient( Quaternion.mul( spinBarOrient, Glm.rotate( new Quaternion( 1.0f ),
360.0f * timer.getAlpha(), new Vec3( 0.0f, 0.0f, 1.0f ) ) ) );
{
MatrixStack persMatrix = new MatrixStack();
persMatrix.perspective( 60.0f, displayWidth / (float) displayHeight, zNear, zFar );
ProjectionBlock projData = new ProjectionBlock();
projData.cameraToClipMatrix = persMatrix.top();
glBindBuffer( GL_UNIFORM_BUFFER, projectionUniformBuffer );