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| class CPoint3D(object):
def __init__(self, x =0, y=0, z=0):
self.x = x
self.y = y
self.z = z
class CCamera(object):
def __init__(self):
self.eye = CPoint3D()
self.up = CPoint3D()
self.center = CPoint3D()
self.speed = 0
self.SetUp()
self.SetEye()
self.SetCenter()
self.SetSpeed()
def SetUp(self, x=0, y=1, z=0):
self.up.x = x
self.up.y = y
self.up.z = z
def SetEye(self, x=3, y=4, z=3):
self.eye.x = x
self.eye.y = y
self.eye.z = z
def SetCenter(self, x=0, y=0, z=0):
self.center.x = x
self.center.y = y
self.center.z = z
def SetSpeed(self, vitesse =0.6):
self.speed = vitesse
def Focalize(self):
gluLookAt(self.eye.x, self.eye.y, self.eye.z,
self.center.x, self.center.y, self.center.z,
self.up.x, self.up.y, self.up.z)
def Distance(self, distance = 0):
norme = sqrt( (self.eye.x-self.center.x)**2 +
(self.eye.z-self.center.z)**2 +
(self.eye.y-self.center.y)**2 )
self.eye.x += (self.distance/self.norme) * (self.center.x - self.eye.x)
self.eye.y += (self.distance/self.norme) * (self.center.y - self.eye.y)
self.eye.z += (self.distance/self.norme) * (self.center.z - self.eye.z)
norme = sqrt( (self.eye.x-self.center.x)**2 +
(self.eye.z-self.center.z)**2 +
(self.eye.y-self.center.y)**2 )
self.center.x += (self.distance/self.norme) * (self.center.x - self.eye.x)
self.center.y += (self.distance/self.norme) * (self.center.y - self.eye.y)
self.center.z += (self.distance/self.norme) * (self.center.z - self.eye.z)
def ComputeRotationY(self, angle =0):
angle /= (180 * 3.1416)
self.SetCenter( (self.center.x - self.eye.x) * cos(angle) + self.eye.x - (self.center.z - self.eye.z) * sin(angle),
self.center.y,
(self.center.x - self.eye.x) * sin(angle) + self.eye.x - (self.center.z - self.eye.z) * cos(angle) )
def ComputeRotationXZ(self, angle =0):
angle /= (180 * 3.1416)
P = CPoint3D( (self.center.x - self.eye.x),
(self.center.z - self.eye.z),
(self.center.y - self.eye.y) )
r = sqrt( P.x**2 + P.y**2 + P.z**2 )
q = atan(P.y/P.x)
t = acos(P.z/r) + angle
if ( (P.x <= 0) and (P.y >= 0) ):
q += 3.1416
else:
q += -3.1416
P = ( r*sin(t)*cos(q) + self.eye.x,
r*sin(t)*sin(q) + self.eye.z,
r*cos(t) + self.eye.y )
self.SetCenter(P.x, P.z, P.y) |
