Re: [Flightgear-devel] A Car for Flightgear
On Wed, 15 Aug 2007, Detlef Faber wrote: Thanks, next is airlift for the jeep. As in load it into a C-130 Hercules I presume. That'd be cool. We could add race tracks to the interiors of C-5 Galaxy (aka the aluminum overcast) (I walked around inside one at the Abbotsford, BC, Canada, air show this weekend - *BIG* airplane!). But why stop with this? Why not an Aerocar? http://www.museumofflight.org/Collection/Aircraft.asp?RecordKey=C39138F6-8220-4A29-9B33-4C9A264D67FB In the model railroading world, they say there is a prototype for everything... -- Mike Schuh - Seattle, Washington USA http://www.farmdale.com - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] A Car for Flightgear
Am Dienstag, den 14.08.2007, 23:23 -0700 schrieb Mike Schuh: On Wed, 15 Aug 2007, Detlef Faber wrote: Thanks, next is airlift for the jeep. As in load it into a C-130 Hercules I presume. That'd be cool. That is the ultimate goal. But first I will try to do airlift by helicopter. We could add race tracks to the interiors of C-5 Galaxy (aka the aluminum overcast) (I walked around inside one at the Abbotsford, BC, Canada, air show this weekend - *BIG* airplane!). But why stop with this? Why not an Aerocar? http://www.museumofflight.org/Collection/Aircraft.asp?RecordKey=C39138F6-8220-4A29-9B33-4C9A264D67FB In the model railroading world, they say there is a prototype for everything... Now as you mention it, I think there once was a jeep fitted with a autogyro rotor. Hmmm... -- Mike Schuh - Seattle, Washington USA http://www.farmdale.com - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Severe Turbulence (Weather Interpolation Problem?)
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Committed; thanks.
Tim
Anders Gidenstam wrote:
On Sun, 12 Aug 2007, Hans Fugal wrote:
That's because there is no custom comparison predicate for comparing
bucket*. vectorbucket* is just a list of pointers, and so uses the
sort order for pointers. You'd have to set up an STL functor to sort
them, which is ugly and difficult (but certainly doable). If sorting
is unnecessary it's a better way to go, obviously. :-)
Yep, that's what I figured out eventually. I think it is safer to keep the
sorting for now - in case e.g. the user changes the layer elevations
using the property browser.
The patch included adds a comparison predicate for buckets.
Please test it and commit it if it is acceptable. It works fine here.
Cheers,
Anders
diff --git a/src/Environment/environment_ctrl.cxx
b/src/Environment/environment_ctrl.cxx
index a1ed5f2..0ca2cba 100644
--- a/src/Environment/environment_ctrl.cxx
+++ b/src/Environment/environment_ctrl.cxx
@@ -231,7 +231,7 @@ FGInterpolateEnvironmentCtrl::read_table (const
SGPropertyNode * node,
table.push_back(b);
}
}
-sort(table.begin(), table.end());
+sort(table.begin(), table.end(), bucket::lessThan);
}
void
@@ -312,6 +312,11 @@ FGInterpolateEnvironmentCtrl::bucket::operator (const
bucket b) const
return (altitude_ft b.altitude_ft);
}
+bool
+FGInterpolateEnvironmentCtrl::bucket::lessThan(bucket *a, bucket *b)
+{
+return (a-altitude_ft) (b-altitude_ft);
+}
diff --git a/src/Environment/environment_ctrl.hxx
b/src/Environment/environment_ctrl.hxx
index f561f05..cd01b55 100644
--- a/src/Environment/environment_ctrl.hxx
+++ b/src/Environment/environment_ctrl.hxx
@@ -134,6 +134,8 @@ private:
double altitude_ft;
FGEnvironment environment;
bool operator (const bucket b) const;
+// LessThan predicate for bucket pointers.
+static bool lessThan(bucket *a, bucket *b);
};
void read_table (const SGPropertyNode * node, vectorbucket * table);
-
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Re: [Flightgear-devel] Severe Turbulence (Weather Interpolation Problem?)
Tim Moore wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Committed; thanks.
Tim
It looks like this fix needs to be applied to the weather interpolation
in the plib branch also.
Anders Gidenstam wrote:
On Sun, 12 Aug 2007, Hans Fugal wrote:
That's because there is no custom comparison predicate for comparing
bucket*. vectorbucket* is just a list of pointers, and so uses the
sort order for pointers. You'd have to set up an STL functor to sort
them, which is ugly and difficult (but certainly doable). If sorting
is unnecessary it's a better way to go, obviously. :-)
Yep, that's what I figured out eventually. I think it is safer to keep the
sorting for now - in case e.g. the user changes the layer elevations
using the property browser.
The patch included adds a comparison predicate for buckets.
Please test it and commit it if it is acceptable. It works fine here.
Cheers,
Anders
diff --git a/src/Environment/environment_ctrl.cxx
b/src/Environment/environment_ctrl.cxx
index a1ed5f2..0ca2cba 100644
--- a/src/Environment/environment_ctrl.cxx
+++ b/src/Environment/environment_ctrl.cxx
@@ -231,7 +231,7 @@ FGInterpolateEnvironmentCtrl::read_table (const
SGPropertyNode * node,
table.push_back(b);
}
}
-sort(table.begin(), table.end());
+sort(table.begin(), table.end(), bucket::lessThan);
}
void
@@ -312,6 +312,11 @@ FGInterpolateEnvironmentCtrl::bucket::operator (const
bucket b) const
return (altitude_ft b.altitude_ft);
}
+bool
+FGInterpolateEnvironmentCtrl::bucket::lessThan(bucket *a, bucket *b)
+{
+return (a-altitude_ft) (b-altitude_ft);
+}
diff --git a/src/Environment/environment_ctrl.hxx
b/src/Environment/environment_ctrl.hxx
index f561f05..cd01b55 100644
--- a/src/Environment/environment_ctrl.hxx
+++ b/src/Environment/environment_ctrl.hxx
@@ -134,6 +134,8 @@ private:
double altitude_ft;
FGEnvironment environment;
bool operator (const bucket b) const;
+// LessThan predicate for bucket pointers.
+static bool lessThan(bucket *a, bucket *b);
};
void read_table (const SGPropertyNode * node, vectorbucket * table);
- --
Red Hat France SARL, 171 Avenue Georges Clemenceau
92024 Nanterre Cedex, France.
Siret n° 421 199 464 00056
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Re: [Flightgear-devel] nasal variables
Stewart Andreason wrote: If accessing temp1 _is_ faster than .getValue, then at 2 or 3 accesses, I imagine it becomes faster to do the above? Yes, it's definitely faster, because there's less work to do. Evaluating the expression temp1 requires pushing the symbol value (a string) onto the stack, and executing OP_LOCAL which does a hash table lookup to find the value in the namespace list and leave it on the stack for the next bit of code to use. Evaluating node.getValue() requires: Pushing the symbol node onto the stack Executing OP_LOCAL to look it up Pushing the symbol getValue onto the stack Executing OP_MEMBER to look it up in the object Executing OP_CALL to call it as a function Finally (!) calling the C++ property node function Turn the output node into a Nasal object and leave it on the stack. That said, you really don't want to be designing your scripts around raw, low-level performance issues. Write your code to be readable, not blazingly fast. In general altitude is more readable than altNode.getValue(). Andy - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] A Car for Flightgear
On Wednesday 15 August 2007 07:52, Detlef Faber wrote: Am Dienstag, den 14.08.2007, 23:23 -0700 schrieb Mike Schuh: On Wed, 15 Aug 2007, Detlef Faber wrote: Thanks, next is airlift for the jeep. As in load it into a C-130 Hercules I presume. That'd be cool. That is the ultimate goal. But first I will try to do airlift by helicopter. We could add race tracks to the interiors of C-5 Galaxy (aka the aluminum overcast) (I walked around inside one at the Abbotsford, BC, Canada, air show this weekend - *BIG* airplane!). But why stop with this? Why not an Aerocar? http://www.museumofflight.org/Collection/Aircraft.asp?RecordKey=C39138F6- 8220-4A29-9B33-4C9A264D67FB In the model railroading world, they say there is a prototype for everything... Now as you mention it, I think there once was a jeep fitted with a autogyro rotor. Hmmm... http://www.fiddlersgreen.net/AC/aircraft/Flying-Jeep/info/info.htm The bit where it says The initial test behind the Whitley allegedly left much to be desired, the hanging control column threshing about and the pilot having to exert all his strength to maintain control might be a bit understated - I read an account of the first air-tow flight and apparently both the and observer were terrified by the experience, the whole flight being more or less completely out of control:) LeeE - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] A Car for Flightgear
Detlef Faber schrieb: Hello everybody, Following some recent discussions about vehicle simulation in FlightGear, I made a Willys Jeep for testing. It is still a little basic, but IMHO quite usable. Get it here: http://sol2500.net/flightgear/jeep.tar.gz Steer the car with aileron control. , is Brake and . is Accelerator. If you have rudder pedals with Toebrakes, the left pedal is Brake and the right is Accelerator. M (Shift-m) engages Reverse, m disengages reverse. Driving is best with OSG, Plib delivers a lot of crashes and unstable behaviour in rough terrain. Greetings Detlef Hi, this is a very nice toy to play with - a very well done 3D model AND (for FG OSG) very easy to steer and control (.. although I would favour the joystick throttle for accelerating :-) ). Thank you very much, Detlef. What really fascinated me is that I saw my FlightGear world with other eyes from the Jeep - if you drive through a scenery with some objects. The perception is even different from a very low flying helicopter - sizes, perspektive and space. Here are some screenshots for demonstration, might be (one) good reason to get an OSG FG version running :-) http://home.arcor.de/vollnhals-bremen/JeepTest/ Have as much fun with Detlef's Jeep as I had/have! Regards Georg EDDW - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] A Car for Flightgear
Hi georg - very nice scenery - great work! @Detelf: Can't wait until I have time to try your jeep! Greetings HHS --- Georg Vollnhals [EMAIL PROTECTED] schrieb: Detlef Faber schrieb: Hello everybody, Following some recent discussions about vehicle simulation in FlightGear, I made a Willys Jeep for testing. It is still a little basic, but IMHO quite usable. Get it here: http://sol2500.net/flightgear/jeep.tar.gz Steer the car with aileron control. , is Brake and . is Accelerator. If you have rudder pedals with Toebrakes, the left pedal is Brake and the right is Accelerator. M (Shift-m) engages Reverse, m disengages reverse. Driving is best with OSG, Plib delivers a lot of crashes and unstable behaviour in rough terrain. Greetings Detlef Hi, this is a very nice toy to play with - a very well done 3D model AND (for FG OSG) very easy to steer and control (.. although I would favour the joystick throttle for accelerating :-) ). Thank you very much, Detlef. What really fascinated me is that I saw my FlightGear world with other eyes from the Jeep - if you drive through a scenery with some objects. The perception is even different from a very low flying helicopter - sizes, perspektive and space. Here are some screenshots for demonstration, might be (one) good reason to get an OSG FG version running :-) http://home.arcor.de/vollnhals-bremen/JeepTest/ Have as much fun with Detlef's Jeep as I had/have! Regards Georg EDDW - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel Machen Sie Yahoo! zu Ihrer Startseite. Los geht's: http://de.yahoo.com/set - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now http://get.splunk.com/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
