About: http://webisa.webdatacommons.org/345558677

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	glRotatef((float)yangle , 0.0f, 1.0f, 0.0f);If you don't, all you have is an identity modelview matrix and everything is happening exactly as it should.
http://www.w3.org/ns/prov#wasQuotedFrom	opengl.org