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_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()
# -*- coding:utf-8 -*- ''' Python调试及单元测试 http://www.fuzhijie.me/?p=310 ''' import math_utils a = 3 b = 4 c = math_utils.add(a, b) print c
# -*- coding:utf-8 -*- ''' Python调试及单元测试 http://www.fuzhijie.me/?p=310 ''' import math_utils a = 3 b = 4 c = math_utils.add(a, b) print c
