def get_view_matrix(self):
"""Get the view matrix as a euclid.Matrix4."""
f = (v3(self.look_at) - v3(self.pos)).normalized()
#print "f=", f
up = Vector3(0, 1, 0)
s = f.cross(up).normalize()
#print abs(f), abs(up), abs(s)
#print "s=", s
u = s.cross(f)
m = Matrix4.new(
*itertools.chain(s, [0], u, [0], -f, [0], [0, 0, 0, 1]))
#print m
xlate = Matrix4.new_translate(*(-self.pos))
#print xlate
mat = m.inverse() * xlate
#print mat
return mat
def get_view_matrix_gl(self):
from ctypes import c_double
mat = (c_double * 16)()
glGetDoublev(GL_MODELVIEW_MATRIX, mat)
return Matrix4.new(*mat)