def drawCameraFrame(): # create frame and draw its contents
global cam_box, cent_plane, cam_lab, cam_tri, range_lab, linelen, fwd_line
global fwd_arrow, mouse_line, mouse_arrow, mouse_lab, fov, range_x, cam_dist, cam_frame
global ray
cam_frame = vs.frame( pos = vs.vector(0,2,2,), axis = (0,0,1))
# NB: contents are rel to this frame. start with camera looking "forward"
# origin is at simulated scene.center
fov = vs.pi/3.0 # 60 deg
range_x = 6 # simulates scene.range.x
cam_dist = range_x / vs.tan(fov/2.0) # distance between camera and center.
ray = vs.vector(-20.0, 2.5, 3.0).norm() # (unit) direction of ray vector (arbitrary)
# REL TO CAMERA FRAME
cam_box = vs.box(frame=cam_frame, length=1.5, height=1, width=1.0, color=clr.blue,
pos=(cam_dist,0,0)) # camera-box
cent_plane = vs.box(frame=cam_frame, length=0.01, height=range_x*1.3, width=range_x*2,
pos=(0,0,0), opacity=0.5 ) # central plane
cam_lab = vs.label(frame=cam_frame, text= 'U', pos= (cam_dist,0,0), height= 9, xoffset= 6)
cam_tri = vs.faces( frame=cam_frame, pos=[(0,0,0), (0,0,-range_x), (cam_dist,0,0)])
cam_tri.make_normals()
cam_tri.make_twosided()
range_lab = vs.label(frame=cam_frame, text= 'R', pos= (0, 0, -range_x), height= 9, xoffset= 6)
linelen = scene_size + vs.mag( cam_frame.axis.norm()*cam_dist + cam_frame.pos)
# len of lines from camera
fwd_line = drawLine( vs.vector(cam_dist,0,0), linelen, vs.vector(-1,0,0))
fwd_arrow = vs.arrow(frame=cam_frame, axis=(-2,0,0), pos=(cam_dist, 0, 0), shaftwidth=0.08,
color=clr.yellow)
vs.label(frame=cam_frame, text='C', pos=(0,0,0), height=9, xoffset=6, color=clr.yellow)
mouse_line = drawLine ( vs.vector(cam_dist,0,0), linelen, ray )
mouse_arrow = vs.arrow(frame=cam_frame, axis=ray*2, pos=(cam_dist,0,0), shaftwidth=0.08,
color=clr.red)
mouse_lab = vs.label(frame=cam_frame, text= 'M', height= 9, xoffset= 10, color=clr.red,
pos= -ray*(cam_dist/vs.dot(ray,(1,0,0))) + (cam_dist,0,0))
def draw_camera_frame():
"""Create frame and draw its contents."""
global CAM_BOX, CENT_PLANE, CAM_LAB, CAN_TRI, RANGE_LAB, LINELEN, FWD_LINE
global FWR_ARROW, MOUSE_LINE, MOUSE_ARROW, MOUSE_LAB, FOV, RANGE_X, CAM_DIST, CAM_FRAME
global RAY
CAM_FRAME = vs.frame(pos=vs.vector(0, 2, 2, ), axis=(0, 0, 1))
# NB: contents are rel to this frame. start with camera looking "forward"
# origin is at simulated scene.center
FOV = vs.pi/3.0 # 60 deg
RANGE_X = 6 # simulates scene.range.x
CAM_DIST = RANGE_X / vs.tan(FOV/2.0) # distance between camera and center.
RAY = vs.vector(-20.0, 2.5, 3.0).norm() # (unit) direction of ray vector (arbitrary)
# REL TO CAMERA FRAME
CAM_BOX = vs.box(frame=CAM_FRAME, length=1.5, height=1, width=1.0,
color=CLR.blue, pos=(CAM_DIST, 0, 0)) # camera-box
CENT_PLANE = vs.box(frame=CAM_FRAME, length=0.01, height=RANGE_X*1.3,
width=RANGE_X*2, pos=(0, 0, 0), opacity=0.5) # central plane
CAM_LAB = vs.label(frame=CAM_FRAME, text='U', pos=(CAM_DIST, 0, 0),
height=9, xoffset=6)
CAN_TRI = vs.faces(frame=CAM_FRAME, pos=[
(0, 0, 0), (0, 0, -RANGE_X), (CAM_DIST, 0, 0)])
CAN_TRI.make_normals()
CAN_TRI.make_twosided()
RANGE_LAB = vs.label(frame=CAM_FRAME, text='R', pos=(0, 0, -RANGE_X),
height=9, xoffset=6)
LINELEN = SCENE_SIZE + vs.mag(
CAM_FRAME.axis.norm()*CAM_DIST + CAM_FRAME.pos) # len of lines from camera
FWD_LINE = draw_line(vs.vector(CAM_DIST, 0, 0), LINELEN, vs.vector(-1, 0, 0))
FWR_ARROW = vs.arrow(frame=CAM_FRAME, axis=(-2, 0, 0), pos=(CAM_DIST, 0, 0),
shaftwidth=0.08, color=CLR.yellow)
vs.label(frame=CAM_FRAME, text='C', pos=(0, 0, 0), height=9, xoffset=6,
color=CLR.yellow)
MOUSE_LINE = draw_line(vs.vector(CAM_DIST, 0, 0), LINELEN, RAY)
MOUSE_ARROW = vs.arrow(frame=CAM_FRAME, axis=RAY*2, pos=(CAM_DIST, 0, 0),
shaftwidth=0.08, color=CLR.red)
MOUSE_LAB = vs.label(
frame=CAM_FRAME, text='M', height=9, xoffset=10,
color=CLR.red,
pos=-RAY*(CAM_DIST/vs.dot(RAY, (1, 0, 0))) + (CAM_DIST, 0, 0))
GEARING = 4
else:
GEARING = 1
CAM_DIST = CAM_DIST + (MOUSE_CHANGE.x + MOUSE_CHANGE.y + MOUSE_CHANGE.z)*GEARING
if CAM_DIST <= 0:
CAM_DIST = 0.001 # allow only positive
LIMIT = SCENE_SIZE*2
if CAM_DIST > LIMIT:
CAM_DIST = LIMIT # limit size
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_LAB.pos = -RAY*(CAM_DIST/vs.dot(RAY, (1, 0, 0))) + (CAM_DIST, 0, 0)
RANGE_X = CAM_DIST * vs.tan(FOV/2.0)
CENT_PLANE.width = RANGE_X*2
CENT_PLANE.height = RANGE_X*4.0/3
redraw_tri() # redraw the camera triangle
RANGE_LAB.pos = (0, 0, -RANGE_X)
MODE_LAB.SetLabel('scene.range:\n' + format(RANGE_X, "9.3"))
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)
if not qPy: vss.forward = - cam_frame.axis
elif mode == 'r': # demonstrate altering scene.range. Alters size of camera triangle.
if qPy: gearing = 4
else: gearing = 1
cam_dist = cam_dist + (mouse_change.x + mouse_change.y + mouse_change.z)*gearing
if cam_dist <= 0: cam_dist = 0.001 # allow only positive
limit = scene_size*2
if cam_dist > limit: cam_dist = limit # limit size
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_lab.pos = -ray*(cam_dist/vs.dot(ray,(1,0,0))) + (cam_dist,0,0)
range_x = cam_dist * vs.tan(fov/2.0)
cent_plane.width = range_x*2
cent_plane.height = range_x*4.0/3
reDrawTri() # redraw the camera triangle
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)
def drawCameraFrame(): # create frame and draw its contents
global cam_box, cent_plane, cam_lab, cam_tri, range_lab, linelen, fwd_line
global fwd_arrow, mouse_line, mouse_arrow, mouse_lab, fov, range_x, cam_dist, cam_frame
global ray
cam_frame = vs.frame(pos=vs.vector(
0,
2,
2,
), axis=(0, 0, 1))
# NB: contents are rel to this frame. start with camera looking "forward"
# origin is at simulated scene.center
fov = vs.pi / 3.0 # 60 deg
range_x = 6 # simulates scene.range.x
cam_dist = range_x / vs.tan(
fov / 2.0) # distance between camera and center.
ray = vs.vector(-20.0, 2.5,
3.0).norm() # (unit) direction of ray vector (arbitrary)
# REL TO CAMERA FRAME
cam_box = vs.box(frame=cam_frame,
length=1.5,
height=1,
width=1.0,
color=clr.blue,
pos=(cam_dist, 0, 0)) # camera-box
cent_plane = vs.box(frame=cam_frame,
length=0.01,
height=range_x * 1.3,
width=range_x * 2,
pos=(0, 0, 0),
opacity=0.5) # central plane
cam_lab = vs.label(frame=cam_frame,
text='U',
pos=(cam_dist, 0, 0),
height=9,
xoffset=6)
cam_tri = vs.faces(frame=cam_frame,
pos=[(0, 0, 0), (0, 0, -range_x), (cam_dist, 0, 0)])
cam_tri.make_normals()
cam_tri.make_twosided()
range_lab = vs.label(frame=cam_frame,
text='R',
pos=(0, 0, -range_x),
height=9,
xoffset=6)
linelen = scene_size + vs.mag(cam_frame.axis.norm() * cam_dist +
cam_frame.pos)
# len of lines from camera
fwd_line = drawLine(vs.vector(cam_dist, 0, 0), linelen,
vs.vector(-1, 0, 0))
fwd_arrow = vs.arrow(frame=cam_frame,
axis=(-2, 0, 0),
pos=(cam_dist, 0, 0),
shaftwidth=0.08,
color=clr.yellow)
vs.label(frame=cam_frame,
text='C',
pos=(0, 0, 0),
height=9,
xoffset=6,
color=clr.yellow)
mouse_line = drawLine(vs.vector(cam_dist, 0, 0), linelen, ray)
mouse_arrow = vs.arrow(frame=cam_frame,
axis=ray * 2,
pos=(cam_dist, 0, 0),
shaftwidth=0.08,
color=clr.red)
mouse_lab = vs.label(frame=cam_frame,
text='M',
height=9,
xoffset=10,
color=clr.red,
pos=-ray * (cam_dist / vs.dot(ray, (1, 0, 0))) +
(cam_dist, 0, 0))
elif mode == 'r': # demonstrate altering scene.range. Alters size of camera triangle.
if qPy: gearing = 4
else: gearing = 1
cam_dist = cam_dist + (mouse_change.x + mouse_change.y +
mouse_change.z) * gearing
if cam_dist <= 0: cam_dist = 0.001 # allow only positive
limit = scene_size * 2
if cam_dist > limit: cam_dist = limit # limit size
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_lab.pos = -ray * (cam_dist / vs.dot(ray, (1, 0, 0))) + (cam_dist,
0, 0)
range_x = cam_dist * vs.tan(fov / 2.0)
cent_plane.width = range_x * 2
cent_plane.height = range_x * 4.0 / 3
reDrawTri() # redraw the camera triangle
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)
