def set_default_light(self):
default_ambiant = 0.22
LightDiffuse = [ \
1.0 - default_ambiant, 1.0 - default_ambiant,
1.0 - default_ambiant, 1.0]
LightAmbiant = [0, 0, 0, 1.0]
LightSpecular = [1.0, 1.0, 1.0, 1.0]
LightAmbiantScene = [
default_ambiant, default_ambiant, default_ambiant, 1.0
]
# Needed because when passing light infos : The position is transformed by the
# modelview matrix when glLight is called (just as if it were a point), and it
# is stored in eye coordinates. If the w component of the position is 0.0, the
# light is treated as a directional source.
#
# Save model view
glMatrixMode(GL_MODELVIEW)
glPushMatrix()
glLoadIdentity()
glLightModelf(GL_LIGHT_MODEL_TWO_SIDE, 1.0)
# Facial light - LIGHT 1
look = [0., 0., -1.]
quat = common_quaternion_from_angles(30., 30., 0.)
v = multiply_point_by_matrix(quaternion_to_matrix(quat), look)
light0Pos = map(lambda x: x * -1., v) # * -1
matShine = 60.00
glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, matShine)
glLightfv(GL_LIGHT0, GL_POSITION, light0Pos)
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, LightAmbiantScene)
glLightfv(GL_LIGHT0, GL_DIFFUSE, LightDiffuse)
glLightfv(GL_LIGHT0, GL_SPECULAR, LightSpecular)
glLightfv(GL_LIGHT0, GL_AMBIENT, LightAmbiant)
glEnable(GL_LIGHT0)
if True:
# Opposite light - LIGHT 2
matShine = 60.00
light1Pos = [-0.7, -0.7, -0.7, 0.00]
LightDiffuse = [1.0, 1.0, 1.0, 1.0]
glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, matShine)
glLightfv(GL_LIGHT1, GL_POSITION, light1Pos)
glLightfv(GL_LIGHT1, GL_DIFFUSE, LightDiffuse)
glLightfv(GL_LIGHT1, GL_SPECULAR, LightDiffuse)
glEnable(GL_LIGHT1)
glEnable(GL_COLOR_MATERIAL)
glEnable(GL_LIGHTING)
glShadeModel(GL_SMOOTH)
# restore modelview
glPopMatrix()
def set_matrix(self, v):
'''
To debug this, make sure gluPerspective and gluLookAt have
the same parameter when given the same mouse events in cpp and in python
'''
############
# Projection
glMatrixMode( GL_PROJECTION )
glLoadIdentity()
pixel_ratio = self.w / float(self.h)
zF = v.focal / 30.0
diam2 = 2.0 * self.scene.bb.sphere_beam()
look = sub(v.tget, v.eye)
diam = 0.5 * norm(look)
recul = 2 * diam
zNear = 0.01 * recul # 1% du segment de visee oeil-cible
zFar = recul + diam2
if pixel_ratio < 1:
zF /= pixel_ratio
logger.info('gluPerspective %f %f %f %f' % (zF*30, pixel_ratio, zNear, zFar))
gluPerspective (zF*30, pixel_ratio, zNear, zFar)
# For debug: hard-coded values for some models
#gluPerspective ( 32, 1.34, 27, 54 ) # Gears
#gluPerspective ( 32, 1.44, 204, 409 ) # spaceship
############
# Model View
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
glTranslatef(v.recenterX, v.recenterY, 0.0)
# Take care of the eye
rotation_matrix = quaternion_to_matrix(v.quat)
new_look = [0, 0, recul] # LOL name
v.eye = multiply_point_by_matrix(rotation_matrix, new_look)
v.eye = add(v.eye, self.scene.bb.center())
# Vector UP (Y)
vup_t = multiply_point_by_matrix(rotation_matrix, [0.0, 1.0, 0.0])
logger.info('gluLookAt eye %s' % str(v.eye))
logger.info('gluLookAt tget %s' % str(v.tget))
logger.info('gluLookAt vup %s' % str(vup_t))
gluLookAt ( v.eye[0], v.eye[1], v.eye[2],
v.tget[0], v.tget[1], v.tget[2],
vup_t[0], vup_t[1], vup_t[2] )
def set_default_light(self):
default_ambiant = 0.22
LightDiffuse = [ \
1.0 - default_ambiant, 1.0 - default_ambiant,
1.0 - default_ambiant, 1.0]
LightAmbiant = [ 0, 0, 0, 1.0 ];
LightSpecular = [ 1.0, 1.0, 1.0, 1.0 ]
LightAmbiantScene = [ default_ambiant, default_ambiant, default_ambiant, 1.0 ]
# Needed because when passing light infos : The position is transformed by the
# modelview matrix when glLight is called (just as if it were a point), and it
# is stored in eye coordinates. If the w component of the position is 0.0, the
# light is treated as a directional source.
#
# Save model view
glMatrixMode(GL_MODELVIEW)
glPushMatrix()
glLoadIdentity()
glLightModelf(GL_LIGHT_MODEL_TWO_SIDE, 1.0)
# Facial light - LIGHT 1
look = [0.,0.,-1.]
quat = common_quaternion_from_angles(30.,30.,0.)
v = multiply_point_by_matrix(quaternion_to_matrix(quat), look)
light0Pos = map(lambda x: x * -1., v) # * -1
matShine = 60.00
glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, matShine)
glLightfv(GL_LIGHT0, GL_POSITION, light0Pos)
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, LightAmbiantScene)
glLightfv(GL_LIGHT0, GL_DIFFUSE, LightDiffuse)
glLightfv(GL_LIGHT0, GL_SPECULAR, LightSpecular)
glLightfv(GL_LIGHT0, GL_AMBIENT, LightAmbiant)
glEnable(GL_LIGHT0)
if True:
# Opposite light - LIGHT 2
matShine = 60.00
light1Pos = [ -0.7, -0.7, -0.7, 0.00 ]
LightDiffuse = [1.0, 1.0, 1.0, 1.0]
glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, matShine)
glLightfv(GL_LIGHT1, GL_POSITION, light1Pos)
glLightfv(GL_LIGHT1, GL_DIFFUSE, LightDiffuse)
glLightfv(GL_LIGHT1, GL_SPECULAR, LightDiffuse)
glEnable(GL_LIGHT1)
glEnable(GL_COLOR_MATERIAL)
glEnable(GL_LIGHTING)
glShadeModel(GL_SMOOTH)
# restore modelview
glPopMatrix()
def set_matrix(self, v):
'''
To debug this, make sure gluPerspective and gluLookAt have
the same parameter when given the same mouse events in cpp and in python
'''
############
# Projection
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
pixel_ratio = self.w / float(self.h)
zF = v.focal / 30.0
diam2 = 2.0 * self.scene.bb.sphere_beam()
look = sub(v.tget, v.eye)
diam = 0.5 * norm(look)
recul = 2 * diam
zNear = 0.01 * recul # 1% du segment de visee oeil-cible
zFar = recul + diam2
if pixel_ratio < 1:
zF /= pixel_ratio
logger.info('gluPerspective %f %f %f %f' %
(zF * 30, pixel_ratio, zNear, zFar))
gluPerspective(zF * 30, pixel_ratio, zNear, zFar)
# For debug: hard-coded values for some models
#gluPerspective ( 32, 1.34, 27, 54 ) # Gears
#gluPerspective ( 32, 1.44, 204, 409 ) # spaceship
############
# Model View
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
glTranslatef(v.recenterX, v.recenterY, 0.0)
# Take care of the eye
rotation_matrix = quaternion_to_matrix(v.quat)
new_look = [0, 0, recul] # LOL name
v.eye = multiply_point_by_matrix(rotation_matrix, new_look)
v.eye = add(v.eye, self.scene.bb.center())
# Vector UP (Y)
vup_t = multiply_point_by_matrix(rotation_matrix, [0.0, 1.0, 0.0])
logger.info('gluLookAt eye %s' % str(v.eye))
logger.info('gluLookAt tget %s' % str(v.tget))
logger.info('gluLookAt vup %s' % str(vup_t))
gluLookAt(v.eye[0], v.eye[1], v.eye[2], v.tget[0], v.tget[1],
v.tget[2], vup_t[0], vup_t[1], vup_t[2])
def reset(self, _bb):
self.recenterX = 0.0
self.recenterY = 0.0
self.focal = 32.0
self.quat = common_quaternion_from_angles(180, 45 + 22.5, 0)
self.quat = [-0.23, 0.40, 0.090, 0.88]
recul = 1.5 * _bb.sphere_beam()
if False: # try to mimic cpp but that does not work
look = [0.0, 0.0, recul]
self.eye = point_by_matrix(quaternion_to_matrix(self.quat), look)
self.tget = look
# Using sub(_bb.min(), [recul, recul, recul]) has the same effects
self.eye = add([recul, recul, recul], _bb.max())
self.tget = _bb.center()
def reset(self, _bb):
self.recenterX = 0.0
self.recenterY = 0.0
self.focal = 32.0
self.quat = common_quaternion_from_angles(180, 45+22.5, 0 )
self.quat = [-0.23, 0.40, 0.090, 0.88]
recul = 1.5 * _bb.sphere_beam()
if False: # try to mimic cpp but that does not work
look = [0.0, 0.0, recul]
self.eye = point_by_matrix(quaternion_to_matrix(self.quat), look)
self.tget = look
# Using sub(_bb.min(), [recul, recul, recul]) has the same effects
self.eye = add([recul, recul, recul], _bb.max())
self.tget = _bb.center()