def draw_spheres(self, solid=False):
gl.glMatrixMode(gl.GL_MODELVIEW)
gray = 0.3
gl.glColor3f(gray, gray, gray)
if solid:
gl.glEnable(gl.GL_LIGHTING)
gl.glEnable(gl.GL_LIGHT0)
gl.glLightfv(gl.GL_LIGHT0, gl.GL_AMBIENT, [1, 1, 1, 1])
gl.glLightfv(gl.GL_LIGHT0, gl.GL_POSITION, [0, 0, 1, 0])
gl.glEnable(gl.GL_BLEND)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glMaterialfv(gl.GL_FRONT, gl.GL_DIFFUSE, [1, 1, 1, 0.5])
sphere = gltbx.util.SolidSphere
grid = 50
else:
sphere = gltbx.util.WireSphere
grid = 20
for i, (x, r) in enumerate(self.spheres):
gl.glPushMatrix()
gl.glTranslated(*(x))
sphere(radius=r, slices=grid, stacks=grid)
gl.glPopMatrix()
if solid:
gl.glDisable(gl.GL_LIGHTING)
gl.glDisable(gl.GL_LIGHT0)
gl.glDisable(gl.GL_BLEND)
def fit_into_viewport(self):
dx, dy, dz = self.compute_home_translation()
move_factor = self.translation_move_factor((dx, dy, dz))
mvm = gltbx.util.get_gl_modelview_matrix()
for f in animation_stepper(time_move=self.animation_time,
move_factor=move_factor):
gl.glMatrixMode(gl.GL_MODELVIEW)
gl.glLoadIdentity()
gl.glTranslated(f * dx, f * dy, f * dz)
gl.glMultMatrixd(mvm)
self.OnRedraw()
def move_to_center_of_viewport(self, obj_coor):
dx, dy = [-x for x in gltbx.util.object_as_eye_coordinates(obj_coor)[:2]]
move_factor = self.translation_move_factor((dx, dy, 0))
mvm = gltbx.util.get_gl_modelview_matrix()
for f in animation_stepper(
time_move=self.animation_time, move_factor=move_factor
):
gl.glMatrixMode(gl.GL_MODELVIEW)
gl.glLoadIdentity()
gl.glTranslated(f * dx, f * dy, 0)
gl.glMultMatrixd(mvm)
self.OnRedraw()
def initialize_modelview(self, eye_vector=None, angle=None):
gl.glMatrixMode(gl.GL_MODELVIEW)
gl.glLoadIdentity()
self.setup_lighting()
glu.gluLookAt(0, 0, 0, 0, 0, -1, 0, 1, 0)
translation = self.compute_home_translation()
gl.glTranslated(*translation)
rc = self.minimum_covering_sphere.center()
self.rotation_center = rc
if eye_vector is None:
eye_vector = (1, 1, 1)
if angle is None:
angle = -120
gltbx.util.rotate_object_about_eye_vector(
xcenter=rc[0],
ycenter=rc[1],
zcenter=rc[2],
xvector=eye_vector[0],
yvector=eye_vector[1],
zvector=eye_vector[2],
angle=angle,
)
