User:Dora Gustafson/moderated world wind - Revision history

Gwyneth Llewelyn: Replaced with

2024-11-29T11:04:47Z

Replaced <source> with <syntaxhighlight>

← Older revision		Revision as of 04:04, 29 November 2024
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	== Moderated in World Wind ==		== Moderated in World Wind ==
	The sailing community in Second Life do not use the world wind for sailing. The reasons are		The sailing community in Second Life do not use the world wind for sailing. The reasons are
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	Firstly: Everybody read the wind in sim position <0,0,0><br>		Firstly: Everybody read the wind in sim position <0,0,0><br>
	Secondly: The wind speed is moderated to 5 times the cubic root of the obtained wind speed		Secondly: The wind speed is moderated to 5 times the cubic root of the obtained wind speed
	<~~source~~ lang="lsl2">		<syntaxhighlight lang="lsl2">
	vector windVector = llWind( -llGetPos()); // Wind velocity in region at <0,0,0>		vector windVector = llWind( -llGetPos()); // Wind velocity in region at <0,0,0>
	float speed = 5.0*llPow( llVecMag( windVector), .333333); // moderated speed		float speed = 5.0*llPow( llVecMag( windVector), .333333); // moderated speed
	windVector = speed*llVecNorm( windVector); // moderated wind velocity		windVector = speed*llVecNorm( windVector); // moderated wind velocity
	</~~source~~>		</syntaxhighlight>
	With this moderated wind all sailors are guarantied the same unpredictable wind at any time<br>		With this moderated wind all sailors are guarantied the same unpredictable wind at any time<br>
	Statistics for the moderated wind:		Statistics for the moderated wind:

Dora Gustafson: Moderated in world wind for sailing in general and racing particularely

2016-08-10T09:40:34Z

Moderated in world wind for sailing in general and racing particularely

New page

== Moderated in World Wind ==
The sailing community in Second Life do not use the world wind for sailing. The reasons are
# The wind is different in each position so that two sailors are guarantied to have different wind at any time
# Most of the time the wind is too light or too heavy for sailing
This moderated wind overcomes these objections<br>
Firstly: Everybody read the wind in sim position <0,0,0><br>
Secondly: The wind speed is moderated to 5 times the cubic root of the obtained wind speed
<source lang="lsl2">
vector windVector = llWind( -llGetPos()); // Wind velocity in region at <0,0,0>
float speed = 5.0*llPow( llVecMag( windVector), .333333); // moderated speed
windVector = speed*llVecNorm( windVector); // moderated wind velocity
</source>
With this moderated wind all sailors are guarantied the same unpredictable wind at any time<br>
Statistics for the moderated wind:
measured: 33000 times (twelwe hours)
Wind Mean: 15 kts
Standard deviation: 3 kts
Max: 24 kts
Min: 3 kts
Observations:<br>
# very suitable for sailing
# may stay almost the same over one, two or more sims
# may change slowly over time or direction may jump
# wind direction may 'jump' but only when the wind speed is low (very natural)
# all sailors have identical wind conditions and racing on equal terms is possible
{{LSLC|Library}}