def getMatrices(self, eye):
def lookat(ex, ey, ez, tx, ty, tz, ux, uy, uz):
e = np.array([ex, ey, ez])
t = np.array([tx, ty, tz])
u = np.array([ux, uy, uz])
return matrix.lookat(e, t, u)
stereoMode = 0
if eye:
stereoMode = self.stereoMode
aspect = float(max(1, G.windowWidth)) / float(max(1, G.windowHeight))
if stereoMode == 0:
# No stereo
if self.projection:
proj = matrix.perspective(self.fovAngle, aspect,
self.nearPlane, self.farPlane)
else:
height = self.scale
width = self.scale * aspect
proj = matrix.ortho(-width, width, -height, height,
self.nearPlane, self.farPlane)
mv = lookat(
self.eyeX,
self.eyeY,
self.eyeZ, # Eye
self.focusX,
self.focusY,
self.focusZ, # Focus
self.upX,
self.upY,
self.upZ) # Up
elif stereoMode == 1:
# Toe-in method, uses different eye positions, same focus point and projection
proj = matrix.perspective(self.fovAngle, aspect, self.nearPlane,
self.farPlane)
if eye == 1:
mv = lookat(
self.eyeX - 0.5 * self.eyeSeparation,
self.eyeY,
self.eyeZ, # Eye
self.focusX,
self.focusY,
self.focusZ, # Focus
self.upX,
self.upY,
self.upZ) # Up
elif eye == 2:
mv = lookat(
self.eyeX + 0.5 * self.eyeSeparation,
self.eyeY,
self.eyeZ, # Eye
self.focusX,
self.focusY,
self.focusZ, # Focus
self.upX,
self.upY,
self.upZ) # Up
elif stereoMode == 2:
# Off-axis method, uses different eye positions, focus points and projections
widthdiv2 = math.tan(
math.radians(self.fovAngle) / 2) * self.nearPlane
left = -aspect * widthdiv2
right = aspect * widthdiv2
top = widthdiv2
bottom = -widthdiv2
if eye == 1: # Left
eyePosition = -0.5 * self.eyeSeparation
elif eye == 2: # Right
eyePosition = 0.5 * self.eyeSeparation
else:
eyePosition = 0.0
left -= eyePosition * self.nearPlane / self.eyeZ
right -= eyePosition * self.nearPlane / self.eyeZ
# Left frustum is moved right, right frustum moved left
proj = matrix.frustum(left, right, bottom, top, self.nearPlane,
self.farPlane)
# Left camera is moved left, right camera moved right
mv = lookat(
self.eyeX + eyePosition,
self.eyeY,
self.eyeZ, # Eye
self.focusX + eyePosition,
self.focusY,
self.focusZ, # Focus
self.upX,
self.upY,
self.upZ) # Up
return proj, mv
def getMatrices(self, eye):
def lookat(ex, ey, ez, tx, ty, tz, ux, uy, uz):
e = np.array([ex, ey, ez])
t = np.array([tx, ty, tz])
u = np.array([ux, uy, uz])
return matrix.lookat(e, t, u)
stereoMode = 0
if eye:
stereoMode = self.stereoMode
aspect = float(max(1, G.windowWidth)) / float(max(1, G.windowHeight))
if stereoMode == 0:
# No stereo
if self.projection:
proj = matrix.perspective(self.fovAngle, aspect, self.nearPlane, self.farPlane)
else:
height = self.scale
width = self.scale * aspect
proj = matrix.ortho(-width, width, -height, height, self.nearPlane, self.farPlane)
mv = lookat(
self.eyeX,
self.eyeY,
self.eyeZ, # Eye
self.focusX,
self.focusY,
self.focusZ, # Focus
self.upX,
self.upY,
self.upZ,
) # Up
elif stereoMode == 1:
# Toe-in method, uses different eye positions, same focus point and projection
proj = matrix.perspective(self.fovAngle, aspect, self.nearPlane, self.farPlane)
if eye == 1:
mv = lookat(
self.eyeX - 0.5 * self.eyeSeparation,
self.eyeY,
self.eyeZ, # Eye
self.focusX,
self.focusY,
self.focusZ, # Focus
self.upX,
self.upY,
self.upZ,
) # Up
elif eye == 2:
mv = lookat(
self.eyeX + 0.5 * self.eyeSeparation,
self.eyeY,
self.eyeZ, # Eye
self.focusX,
self.focusY,
self.focusZ, # Focus
self.upX,
self.upY,
self.upZ,
) # Up
elif stereoMode == 2:
# Off-axis method, uses different eye positions, focus points and projections
widthdiv2 = math.tan(math.radians(self.fovAngle) / 2) * self.nearPlane
left = -aspect * widthdiv2
right = aspect * widthdiv2
top = widthdiv2
bottom = -widthdiv2
if eye == 1: # Left
eyePosition = -0.5 * self.eyeSeparation
elif eye == 2: # Right
eyePosition = 0.5 * self.eyeSeparation
else:
eyePosition = 0.0
left -= eyePosition * self.nearPlane / self.eyeZ
right -= eyePosition * self.nearPlane / self.eyeZ
# Left frustum is moved right, right frustum moved left
proj = matrix.frustum(left, right, bottom, top, self.nearPlane, self.farPlane)
# Left camera is moved left, right camera moved right
mv = lookat(
self.eyeX + eyePosition,
self.eyeY,
self.eyeZ, # Eye
self.focusX + eyePosition,
self.focusY,
self.focusZ, # Focus
self.upX,
self.upY,
self.upZ,
) # Up
return proj, mv