def _position_vr_overlay(self): # initialize overlay & setup transform to fix overlay to display viewport
Transform_Type= (ctypes.c_float * 4) * 3
transform = Transform_Type()
transform[0][0] = 1
transform[0][1] = 0
transform[0][2] = 0
transform[0][3] = 0
transform[1][0] = 0
transform[1][1] = 1
transform[1][2] = 0
transform[1][3] = 0
transform[2][0] = 0
transform[2][1] = 0
transform[2][2] = 1
transform[2][3] = -1
self._hmd_transform = openvr.HmdMatrix34_t()
self._hmd_transform.m = transform
#set overlay to be fixed to hmd viewport
openvr.IVROverlay().setOverlayTransformTrackedDeviceRelative(
self._overlay,
0,
self._hmd_transform)
def matMul33(a, b, result=None):
if result is None:
result = openvr.HmdMatrix34_t()
for i in range(3):
for j in range(3):
result.m[i][j] = 0.0
for k in range(3):
result.m[i][j] += a.m[i][k] * b.m[k][j]
result[0][3] = b[0][3]
result[1][3] = b[1][3]
result[2][3] = b[2][3]
return result
def __init__(self):
super().__init__()
vr_sys = openvr.init(openvr.VRApplication_Scene)
poses_t = openvr.TrackedDevicePose_t * openvr.k_unMaxTrackedDeviceCount
poses = poses_t()
print("Recommended W H:", vr_sys.getRecommendedRenderTargetSize())
ctrls = []
for i in range(5):
c = vr_sys.getTrackedDeviceClass(i)
if c == openvr.TrackedDeviceClass_HMD:
HMD_id = i
elif c == openvr.TrackedDeviceClass_Controller:
print("Controller:", i)
ctrls.append(i)
self.ov = openvr.VROverlay()
self.cmp = openvr.VRCompositor()
self.vrsys = openvr.VRSystem()
self.CONTROLLERS = ctrls
self.VRposes = poses
k = random.randint(0, 1000)
self.vrBuf1 = self.ov.createOverlay("Buffer 1 " + str(k), "A")
self.vrBuf2 = self.ov.createOverlay("Buffer 2 " + str(k), "B")
# FOV 80 size 0.2
# FOV 120 size 0.6
self.ov.setOverlayWidthInMeters(self.vrBuf1, 0.6)
self.ov.setOverlayWidthInMeters(self.vrBuf2, 0.6)
self.ov.setOverlayFromFile(self.vrBuf1, PATH + "lib/Combat.png")
self.ov.setOverlayFromFile(self.vrBuf2, PATH + "lib/Combat.png")
self.ov.showOverlay(self.vrBuf1)
self.ov.showOverlay(self.vrBuf2)
mt = [(ctypes.c_float * 4)(1, 0, 0, 0.02), (ctypes.c_float * 4)(0, 1,
0, 0),
(ctypes.c_float * 4)(0, 0, 1, -0.2)]
y = openvr.HmdMatrix34_t(*mt)
self.ov.setOverlayTransformTrackedDeviceRelative(
self.vrBuf1, HMD_id, y)
self.ov.setOverlayTransformTrackedDeviceRelative(
self.vrBuf2, HMD_id, y)
self.VRMode = True
def rotate(self, angles, axis=[2,]):
try:
self.rotation_matrix
except AttributeError:
self.rotation_matrix = openvr.HmdMatrix34_t()
if not isinstance(angles, list):
angles = [angles, ]
if not isinstance(axis, list):
axis = [axis, ]
result = copy.copy(self.transform)
for angle, ax in zip(angles, axis):
initRotationMatrix(ax, -angle, self.rotation_matrix)
result = matMul33(self.rotation_matrix, result)
fn = self.vroverlay.function_table.setOverlayTransformAbsolute
fn(self.wheel, openvr.TrackingUniverseSeated, openvr.byref(result))
def initRotationMatrix(axis, angle, matrix=None):
# angle in radians
if matrix is None:
matrix = openvr.HmdMatrix34_t()
if axis == 0:
matrix.m[0][0] = 1.0
matrix.m[0][1] = 0.0
matrix.m[0][2] = 0.0
matrix.m[0][3] = 0.0
matrix.m[1][0] = 0.0
matrix.m[1][1] = cos(angle)
matrix.m[1][2] = -sin(angle)
matrix.m[1][3] = 0.0
matrix.m[2][0] = 0.0
matrix.m[2][1] = sin(angle)
matrix.m[2][2] = cos(angle)
matrix.m[2][3] = 0.0
elif axis == 1:
matrix.m[0][0] = cos(angle)
matrix.m[0][1] = 0.0
matrix.m[0][2] = sin(angle)
matrix.m[0][3] = 0.0
matrix.m[1][0] = 0.0
matrix.m[1][1] = 1.0
matrix.m[1][2] = 0.0
matrix.m[1][3] = 0.0
matrix.m[2][0] = -sin(angle)
matrix.m[2][1] = 0.0
matrix.m[2][2] = cos(angle)
matrix.m[2][3] = 0.0
elif axis == 2:
matrix.m[0][0] = cos(angle)
matrix.m[0][1] = -sin(angle)
matrix.m[0][2] = 0.0
matrix.m[0][3] = 0.0
matrix.m[1][0] = sin(angle)
matrix.m[1][1] = cos(angle)
matrix.m[1][2] = 0.0
matrix.m[1][3] = 0.0
matrix.m[2][0] = 0.0
matrix.m[2][1] = 0.0
matrix.m[2][2] = 1.0
matrix.m[2][3] = 0.0
return matrix
def __init__(self, openvr_id):
self._id = openvr_id
self._x = 0
self._y = 0
self._z = 0
self._pose = openvr.HmdMatrix34_t()