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Add support for returning the play area from XRInterface

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This commit is contained in:
Bastiaan Olij
2021-06-27 21:51:30 +10:00
parent 4387f9645b
commit 96b707215d
10 changed files with 229 additions and 28 deletions
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52
servers/xr_server.cpp
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@@ -116,35 +116,43 @@ Transform3D XRServer::get_reference_frame() const {
};
void XRServer::center_on_hmd(RotationMode p_rotation_mode, bool p_keep_height) {
if (primary_interface != nullptr) {
// clear our current reference frame or we'll end up double adjusting it
if (primary_interface == nullptr) {
return;
}
if (primary_interface->get_play_area_mode() == XRInterface::XR_PLAY_AREA_STAGE) {
// center_on_hmd is not available in this mode
reference_frame = Transform3D();
return;
}
// requesting our EYE_MONO transform should return our current HMD position
Transform3D new_reference_frame = primary_interface->get_camera_transform();
// clear our current reference frame or we'll end up double adjusting it
reference_frame = Transform3D();
// remove our tilt
if (p_rotation_mode == 1) {
// take the Y out of our Z
new_reference_frame.basis.set_axis(2, Vector3(new_reference_frame.basis.elements[0][2], 0.0, new_reference_frame.basis.elements[2][2]).normalized());
// requesting our EYE_MONO transform should return our current HMD position
Transform3D new_reference_frame = primary_interface->get_camera_transform();
// Y is straight up
new_reference_frame.basis.set_axis(1, Vector3(0.0, 1.0, 0.0));
// remove our tilt
if (p_rotation_mode == 1) {
// take the Y out of our Z
new_reference_frame.basis.set_axis(2, Vector3(new_reference_frame.basis.elements[0][2], 0.0, new_reference_frame.basis.elements[2][2]).normalized());
// and X is our cross reference
new_reference_frame.basis.set_axis(0, new_reference_frame.basis.get_axis(1).cross(new_reference_frame.basis.get_axis(2)).normalized());
} else if (p_rotation_mode == 2) {
// remove our rotation, we're only interesting in centering on position
new_reference_frame.basis = Basis();
};
// Y is straight up
new_reference_frame.basis.set_axis(1, Vector3(0.0, 1.0, 0.0));
// don't negate our height
if (p_keep_height) {
new_reference_frame.origin.y = 0.0;
};
reference_frame = new_reference_frame.inverse();
// and X is our cross reference
new_reference_frame.basis.set_axis(0, new_reference_frame.basis.get_axis(1).cross(new_reference_frame.basis.get_axis(2)).normalized());
} else if (p_rotation_mode == 2) {
// remove our rotation, we're only interesting in centering on position
new_reference_frame.basis = Basis();
};
// don't negate our height
if (p_keep_height) {
new_reference_frame.origin.y = 0.0;
};
reference_frame = new_reference_frame.inverse();
};
Transform3D XRServer::get_hmd_transform() {