gistfile1.txt

code:

class face:
    vertexes = []
    
    def __init__(self):
        pass
    
    def addVertex(self,vertex):
        if len(self.vertexes) >= 4:
            print "vertexes:", len(self.vertexes),
            print self.vertexes
            raise Exception("face.vertexes >= 4",vertex)
        else:
            self.vertexes.append(vertex)
            
    def draw(self):
        if len(self.vertexes) == 3:
            glBegin(GL_TRIANGLES)
        elif len(self.vertexes) == 4:
            glBegin(GL_QUADS)
        else:
            return
        
        glColor(0, 0, 1.0)
        for i in self.vertexes:
            i.draw()
            
        glEnd()   


curface = face()
print "new face:",curface.vertexes

output:
vertexes: 4 [<sang.mesh.vertex instance at 0x3207200>, <sang.mesh.vertex instance at 0x3212050>, <sang.mesh.vertex instance at 0x3213f80>, <sang.mesh.vertex instance at 0x3213998>]