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checking edge case of if input vectors are zero

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This commit is contained in:
Wayne Chen 2018-05-30 18:12:40 -07:00
parent 87d26a9d86
commit ed7f008517
1 changed files with 8 additions and 6 deletions
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14
interface/src/ui/overlays/Billboardable.cpp
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@ -41,12 +41,14 @@ bool Billboardable::pointTransformAtCamera(Transform& transform, glm::quat offse
glm::vec3 cameraPos = qApp->getCamera().getPosition();
// use the referencial from the avatar, y isn't always up
glm::vec3 avatarUP = DependencyManager::get<AvatarManager>()->getMyAvatar()->getWorldOrientation()*Vectors::UP;
glm::quat rotation(conjugate(toQuat(glm::lookAt(cameraPos, billboardPos, avatarUP))));
transform.setRotation(rotation);
transform.postRotate(offsetRotation);
return true;
glm::vec3 zeroPos{ 0.0f, 0.0f, 0.0f };
if (!(glm::all(glm::equal(cameraPos, zeroPos)) || glm::all(glm::equal(billboardPos, zeroPos)) ||
glm::all(glm::equal(avatarUP, zeroPos)))) {
glm::quat rotation(conjugate(toQuat(glm::lookAt(cameraPos, billboardPos, avatarUP))));
transform.setRotation(rotation);
transform.postRotate(offsetRotation);
return true;
}
}
return false;
}