range_lab.pos= (0,0,-range_x)
mode_lab.SetLabel( 'scene.range:\n' + format( range_x, "9.3"))
if not qPy: vss.range = range_x
elif mode == 'v': # demonstrate altering scene.fov
cam_dist = cam_dist + (mouse_change.x + mouse_change.y + mouse_change.z)*4
if cam_dist <= 0: cam_dist = 0.001 # allow only positive
ray = (mouse_lab.pos - (cam_dist, 0,0)).norm()
reDrawLines()
cam_box.pos = (cam_dist,0,0)
cam_lab.pos = (cam_dist,0,0)
fwd_arrow.pos = (cam_dist,0,0)
mouse_arrow.pos = (cam_dist,0,0)
mouse_arrow.axis = ray*2
reDrawTri() # redraw the camera triangle
fov = 2*vs.arctan( range_x / cam_dist)
mode_lab.SetLabel( 'scene.fov:\n{0:9.0f} deg'.format( vs.degrees(fov)))
if not qPy: vss.fov = fov
elif mode == 'm': # demonstrate moving the mouse.
hit = vss.mouse.project( cam_frame.axis, cam_frame.pos)
m_pos = cam_frame.world_to_frame(hit)
if abs(m_pos.z) <= cent_plane.width/2.0 and \
abs(m_pos.y) <= cent_plane.height/2.0 : # not "off the screen"
ray = (m_pos - (cam_dist,0,0)).norm()
reDrawLine( mouse_line, vs.vector(cam_dist,0,0), linelen, ray)
mouse_lab.pos = m_pos
mouse_arrow.axis = 2*ray
rayout = cam_frame.frame_to_world(ray) - cam_frame.frame_to_world((0,0,0))
mode_lab.SetLabel( 'scene.mouse.ray:\n' + str2( rayout))
if not Q_PY:
VSS.range = RANGE_X
elif MODE == 'v': # demonstrate altering scene.fov
CAM_DIST = CAM_DIST + (MOUSE_CHANGE.x + MOUSE_CHANGE.y + MOUSE_CHANGE.z)*4
if CAM_DIST <= 0:
CAM_DIST = 0.001 # allow only positive
RAY = (MOUSE_LAB.pos - (CAM_DIST, 0, 0)).norm()
redraw_lines()
CAM_BOX.pos = (CAM_DIST, 0, 0)
CAM_LAB.pos = (CAM_DIST, 0, 0)
FWR_ARROW.pos = (CAM_DIST, 0, 0)
MOUSE_ARROW.pos = (CAM_DIST, 0, 0)
MOUSE_ARROW.axis = RAY*2
redraw_tri() # redraw the camera triangle
FOV = 2*vs.arctan(RANGE_X / CAM_DIST)
MODE_LAB.SetLabel('scene.fov:\n{0:9.0f} deg'.format(vs.degrees(FOV)))
if not Q_PY:
VSS.fov = FOV
elif MODE == 'm': # demonstrate moving the mouse.
HIT = VSS.mouse.project(CAM_FRAME.axis, CAM_FRAME.pos)
M_POS = CAM_FRAME.world_to_frame(HIT)
if abs(M_POS.z) <= CENT_PLANE.width/2.0 and \
abs(M_POS.y) <= CENT_PLANE.height/2.0: # not "off the screen"
RAY = (M_POS - (CAM_DIST, 0, 0)).norm()
redraw_line(MOUSE_LINE, vs.vector(CAM_DIST, 0, 0), LINELEN, RAY)
MOUSE_LAB.pos = M_POS
MOUSE_ARROW.axis = 2*RAY
RAYOUT = CAM_FRAME.frame_to_world(RAY) - CAM_FRAME.frame_to_world((0, 0, 0))
MODE_LAB.SetLabel('scene.mouse.ray:\n' + str2(RAYOUT))
mode_lab.SetLabel('scene.range:\n' + format(range_x, "9.3"))
if not qPy: vss.range = range_x
elif mode == 'v': # demonstrate altering scene.fov
cam_dist = cam_dist + (mouse_change.x + mouse_change.y +
mouse_change.z) * 4
if cam_dist <= 0: cam_dist = 0.001 # allow only positive
ray = (mouse_lab.pos - (cam_dist, 0, 0)).norm()
reDrawLines()
cam_box.pos = (cam_dist, 0, 0)
cam_lab.pos = (cam_dist, 0, 0)
fwd_arrow.pos = (cam_dist, 0, 0)
mouse_arrow.pos = (cam_dist, 0, 0)
mouse_arrow.axis = ray * 2
reDrawTri() # redraw the camera triangle
fov = 2 * vs.arctan(range_x / cam_dist)
mode_lab.SetLabel('scene.fov:\n{0:9.0f} deg'.format(vs.degrees(fov)))
if not qPy: vss.fov = fov
elif mode == 'm': # demonstrate moving the mouse.
hit = vss.mouse.project(cam_frame.axis, cam_frame.pos)
m_pos = cam_frame.world_to_frame(hit)
if abs(m_pos.z) <= cent_plane.width/2.0 and \
abs(m_pos.y) <= cent_plane.height/2.0 : # not "off the screen"
ray = (m_pos - (cam_dist, 0, 0)).norm()
reDrawLine(mouse_line, vs.vector(cam_dist, 0, 0), linelen, ray)
mouse_lab.pos = m_pos
mouse_arrow.axis = 2 * ray
rayout = cam_frame.frame_to_world(ray) - cam_frame.frame_to_world(
(0, 0, 0))
mode_lab.SetLabel('scene.mouse.ray:\n' + str2(rayout))