glm::vec3 TransformSystem::AbsoluteOrientationEuler(EntityWrapper entity)
{
glm::vec3 orientation;
while (entity.Valid()) {
ComponentWrapper transform = entity["Transform"];
orientation += (Field<glm::vec3>)transform["Orientation"];
entity = entity.Parent();
}
return orientation;
}
glm::quat TransformSystem::AbsoluteOrientation(EntityWrapper entity)
{
if (!entity.Valid()) {
return glm::quat();
}
auto cacheIt = OrientationCache.find(entity);
ComponentWrapper cTransform = entity["Transform"];
ComponentWrapper::SubscriptProxy cTransformOrientation = cTransform["Orientation"];
if (cacheIt != OrientationCache.end() && !cTransformOrientation.Dirty(DirtySetType::Transform)) {
return cacheIt->second;
} else {
EntityWrapper parent = entity.Parent();
// Calculate orientation
glm::quat orientation = AbsoluteOrientation(parent) * glm::quat((const glm::vec3&)cTransformOrientation);
// Cache it
OrientationCache[entity] = orientation;
RecalculatedOrientations++;
// Unset dirty flag
cTransformOrientation.SetDirty(DirtySetType::Transform, false);
return orientation;
}
}
glm::vec3 TransformSystem::AbsoluteScale(EntityWrapper entity)
{
if (!entity.Valid()) {
return glm::vec3(1.f);
}
auto cacheIt = ScaleCache.find(entity);
ComponentWrapper cTransform = entity["Transform"];
ComponentWrapper::SubscriptProxy cTransformScale = cTransform["Scale"];
if (cacheIt != ScaleCache.end() && !cTransformScale.Dirty(DirtySetType::Transform)) {
return cacheIt->second;
} else {
EntityWrapper parent = entity.Parent();
// Calculate scale
glm::vec3 scale = AbsoluteScale(parent) * (const glm::vec3&)cTransformScale;
// Cache it
ScaleCache[entity] = scale;
RecalculatedPositions++;
// Unset dirty flag
cTransformScale.SetDirty(DirtySetType::Transform, false);
return scale;
}
}
