Hi,
some more or less printf style debugging led me to the conclusion, that
the immediate culprits are in l. 1847f and 1894f of
simgear/scene/model/animation.cxx
Those conditions seemingly are never true, when this code gets executed.
Even more when bypassing the if-statement, the textranslate/rotate won't
work if the looked for property doesn't exist at execution time.
As far as I looked, I found that some model specific nasal or xml that
does eventually create the pertinent nodes, does so too late. Only when I
forced the creation in the -set.xml the textransformations did work again.
Some other workaround I checked, was to test only for non-emptiness of
the propertyName in the mentioned if-statements and subsequent calling
of getNode() with forced creation of the node. While that does seem to
work, I'm unsure if that is the desired or even a correct solution.
So the quick hack would be:
--- simgear/scene/model/animation.cxx.orig 2007-12-29 13:27:00.000000000
+0100
+++ simgear/scene/model/animation.cxx 2007-12-29 13:26:07.000000000 +0100
@@ -1844,8 +1844,8 @@
{
std::string propertyName = config->getStringValue("property", "/null");
SGSharedPtr<SGExpressiond> value;
- if (getModelRoot()->hasChild(propertyName))
- value = new
SGPropertyExpression<double>(getModelRoot()->getNode(propertyName));
+ if (!propertyName.empty())
+ value = new
SGPropertyExpression<double>(getModelRoot()->getNode(propertyName, true));
else
value = new SGConstExpression<double>(0);
@@ -1891,8 +1891,8 @@
{
std::string propertyName = config->getStringValue("property", "/null");
SGSharedPtr<SGExpressiond> value;
- if (getModelRoot()->hasChild(propertyName))
- value = new
SGPropertyExpression<double>(getModelRoot()->getNode(propertyName));
+ if (!propertyName.empty())
+ value = new
SGPropertyExpression<double>(getModelRoot()->getNode(propertyName, true));
else
value = new SGConstExpression<double>(0);
regards
K. Hoercher
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