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Do not attempt to reposition non-existant clouds.

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Defensive workaround to Issue 678.
This commit is contained in:
Stuart Buchanan
2012-06-19 22:04:17 +01:00
parent 9720f8ca16
commit 9d6e27c85c
1 changed files with 6 additions and 1 deletions
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7
simgear/scene/sky/cloudfield.cxx
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@@ -130,6 +130,11 @@ bool SGCloudField::reposition( const SGVec3f& p, const SGVec3f& up, double lon,
++itr) {
osg::ref_ptr<osg::PositionAttitudeTransform> pat = itr->second;
if (pat == 0) {
continue;
}
osg::Vec3f currpos = field_transform->getPosition() + fta * pat->getPosition();
// Determine the vector from the new position to the cloud in cloud-space.
@@ -367,7 +372,7 @@ void SGCloudField::addCloudToTree(osg::ref_ptr<osg::PositionAttitudeTransform> t
bool SGCloudField::deleteCloud(int identifier) {
osg::ref_ptr<osg::PositionAttitudeTransform> transform = cloud_hash[identifier];
if (transform == NULL) return false;
if (transform == 0) return false;
removeCloudFromTree(transform);
cloud_hash.erase(identifier);