def OnTranslate(self, event):
model = gltbx.util.get_gl_modelview_matrix()
proj = gltbx.util.get_gl_projection_matrix()
view = gltbx.util.get_gl_viewport()
winx = []
winy = []
winz = []
rc = self.rotation_center
rc_eye = gltbx.util.object_as_eye_coordinates(rc)
assert glu.gluProject(rc[0], rc[1], rc[2], model, proj, view, winx,
winy, winz)
objx = []
objy = []
objz = []
win_height = max(1, self.w)
assert glu.gluUnProject(
winx[0],
winy[0] + 0.5 * win_height,
winz[0],
model,
proj,
view,
objx,
objy,
objz,
)
dist = v3distsq((objx[0], objy[0], objz[0]), rc)**0.5
scale = abs(dist / (0.5 * win_height))
x, y = event.GetX(), event.GetY()
gltbx.util.translate_object(scale, x, y, self.xmouse, self.ymouse)
self.rotation_center = tuple(
gltbx.util.modelview_matrix_as_rt().inverse() * matrix.col(rc_eye))
self.OnRedraw()
self.OnRecordMouse(event)
def get_pick_points(self, mouse_xy):
model = gltbx.util.get_gl_modelview_matrix()
proj = gltbx.util.get_gl_projection_matrix()
view = gltbx.util.get_gl_viewport()
self.pick_points = []
for winz in [0.0, 1.0]:
objx = []
objy = []
objz = []
ok = glu.gluUnProject(
mouse_xy[0],
self.h - mouse_xy[1],
winz,
model,
proj,
view,
objx,
objy,
objz,
)
if not ok:
self.pick_points = None
break
self.pick_points.append((objx[0], objy[0], objz[0]))
