hi,
what i have is a quad that looks like an arrow:
if i do glRotatef(a, 1.0f, 0.0f, 0.0f); it rotates around the lower left vertex, that is the lower left never moves. how do i make it rotate around the center?Code:glBegin(GL_QUADS); glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, 1.0f, 0.0f); glTexCoord2f(1.0f, 0.0f); glVertex3f(-0.5f, 0.5f, 0.0f); glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 0.0f, 0.0f); glTexCoord2f(0.0f, 1.0f); glVertex3f(1.0f, 0.5f, 0.0f); glEnd();