summaryrefslogtreecommitdiff
path: root/indra/newview/llwlparammanager.cpp
blob: 3070fed81f5d283723cf1093fe91e49f93b499c6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
/**
 * @file llwlparammanager.cpp
 * @brief Implementation for the LLWLParamManager class.
 *
 * $LicenseInfo:firstyear=2007&license=viewergpl$
 * 
 * Copyright (c) 2007-2009, Linden Research, Inc.
 * 
 * Second Life Viewer Source Code
 * The source code in this file ("Source Code") is provided by Linden Lab
 * to you under the terms of the GNU General Public License, version 2.0
 * ("GPL"), unless you have obtained a separate licensing agreement
 * ("Other License"), formally executed by you and Linden Lab.  Terms of
 * the GPL can be found in doc/GPL-license.txt in this distribution, or
 * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
 * 
 * There are special exceptions to the terms and conditions of the GPL as
 * it is applied to this Source Code. View the full text of the exception
 * in the file doc/FLOSS-exception.txt in this software distribution, or
 * online at
 * http://secondlifegrid.net/programs/open_source/licensing/flossexception
 * 
 * By copying, modifying or distributing this software, you acknowledge
 * that you have read and understood your obligations described above,
 * and agree to abide by those obligations.
 * 
 * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
 * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
 * COMPLETENESS OR PERFORMANCE.
 * $/LicenseInfo$
 */

#include "llviewerprecompiledheaders.h"

#include "llwlparammanager.h"

#include "pipeline.h"
#include "llsky.h"

#include "llsliderctrl.h"
#include "llspinctrl.h"
#include "llcheckboxctrl.h"
#include "lluictrlfactory.h"
#include "llviewercamera.h"
#include "llcombobox.h"
#include "lllineeditor.h"
#include "llsdserialize.h"

#include "v4math.h"
#include "llviewerdisplay.h"
#include "llviewercontrol.h"
#include "llviewerwindow.h"
#include "lldrawpoolwater.h"
#include "llagent.h"
#include "llviewerregion.h"

#include "llenvmanager.h"
#include "llwlparamset.h"
#include "llpostprocess.h"
#include "llfloaterwindlight.h"
#include "llfloaterdaycycle.h"
#include "llfloaterenvsettings.h"
#include "llviewershadermgr.h"
#include "llglslshader.h"

#include "curl/curl.h"
#include "llstreamtools.h"

LLWLParamManager::LLWLParamManager() :

	//set the defaults for the controls
	// index is from sWLUniforms in pipeline.cpp line 979

	/// Sun Delta Terrain tweak variables.
	mSunDeltaYaw(180.0f),
	mSceneLightStrength(2.0f),
	mWLGamma(1.0f, "gamma"),

	mBlueHorizon(0.25f, 0.25f, 1.0f, 1.0f, "blue_horizon", "WLBlueHorizon"),
	mHazeDensity(1.0f, 1.0f, 1.0f, 0.5f, "haze_density"),
	mBlueDensity(0.25f, 0.25f, 0.25f, 1.0f, "blue_density", "WLBlueDensity"),
	mDensityMult(1.0f, "density_multiplier", 1000),
	mHazeHorizon(1.0f, 1.0f, 1.0f, 0.5f, "haze_horizon"),
	mMaxAlt(4000.0f, "max_y"),

	// Lighting
	mLightnorm(0.f, 0.707f, -0.707f, 1.f, "lightnorm"),
	mSunlight(0.5f, 0.5f, 0.5f, 1.0f, "sunlight_color", "WLSunlight"),
	mAmbient(0.5f, 0.75f, 1.0f, 1.19f, "ambient", "WLAmbient"),
	mGlow(18.0f, 0.0f, -0.01f, 1.0f, "glow"),

	// Clouds
	mCloudColor(0.5f, 0.5f, 0.5f, 1.0f, "cloud_color", "WLCloudColor"),
	mCloudMain(0.5f, 0.5f, 0.125f, 1.0f, "cloud_pos_density1"),
	mCloudCoverage(0.0f, "cloud_shadow"),
	mCloudDetail(0.0f, 0.0f, 0.0f, 1.0f, "cloud_pos_density2"),
	mDistanceMult(1.0f, "distance_multiplier"),
	mCloudScale(0.42f, "cloud_scale"),

	// sky dome
	mDomeOffset(0.96f),
	mDomeRadius(15000.f)
{
}

LLWLParamManager::~LLWLParamManager()
{
}

void LLWLParamManager::clearParamSetsOfScope(LLWLParamKey::EScope scope)
{
	if (LLWLParamKey::SCOPE_LOCAL == scope)
	{
		LL_WARNS("Windlight") << "Tried to clear windlight sky presets from local system!  This shouldn't be called..." << LL_ENDL;
		return;
	}

	std::set<LLWLParamKey> to_remove;
	for(std::map<LLWLParamKey, LLWLParamSet>::iterator iter = mParamList.begin(); iter != mParamList.end(); ++iter)
	{
		if(iter->first.scope == scope)
		{
			to_remove.insert(iter->first);
		}
	}

	for(std::set<LLWLParamKey>::iterator iter = to_remove.begin(); iter != to_remove.end(); ++iter)
	{
		mParamList.erase(*iter);
	}
}

// returns all skies referenced by the day cycle, with their final names
// side effect: applies changes to all internal structures!
std::map<LLWLParamKey, LLWLParamSet> LLWLParamManager::finalizeFromDayCycle(LLWLParamKey::EScope scope)
{
	std::map<LLWLParamKey, LLWLParamSet> final_references;

	// Move all referenced to desired scope, renaming if necessary
	// First, save skies referenced
	std::map<LLWLParamKey, LLWLParamSet> current_references; // all skies referenced by the day cycle, with their current names
	// guard against skies with same name and different scopes
	std::set<std::string> inserted_names;
	std::map<std::string, unsigned int> conflicted_names; // integer later used as a count, for uniquely renaming conflicts

	LLWLDayCycle& cycle = mDay;
	for(std::map<F32, LLWLParamKey>::iterator iter = cycle.mTimeMap.begin();
		iter != cycle.mTimeMap.end();
		++iter)
	{
		LLWLParamKey& key = iter->second;
		std::string desired_name = key.name;
		replace_newlines_with_whitespace(desired_name); // already shouldn't have newlines, but just in case
		if(inserted_names.find(desired_name) == inserted_names.end())
		{
			inserted_names.insert(desired_name);
		}
		else
		{
			// make exist in map
			conflicted_names[desired_name] = 0;
		}
		current_references[key] = mParamList[key];
	}

	// forget all old skies in target scope, and rebuild, renaming as needed
	clearParamSetsOfScope(scope);
	for(std::map<LLWLParamKey, LLWLParamSet>::iterator iter = current_references.begin(); iter != current_references.end(); ++iter)
	{
		const LLWLParamKey& old_key = iter->first;

		std::string desired_name(old_key.name);
		replace_newlines_with_whitespace(desired_name);

		LLWLParamKey new_key(desired_name, scope); // name will be replaced later if necessary

		// if this sky is one with a non-unique name, rename via appending a number
		// an existing preset of the target scope gets to keep its name
		if (scope != old_key.scope && conflicted_names.find(desired_name) != conflicted_names.end())
		{
			std::string& new_name = new_key.name;

			do
			{
				// if this executes more than once, this is an absurdly pathological case
				// (e.g. "x" repeated twice, but "x 1" already exists, so need to use "x 2")
				std::stringstream temp;
				temp << desired_name << " " << (++conflicted_names[desired_name]);
				new_name = temp.str();
			} while (inserted_names.find(new_name) != inserted_names.end());

			// yay, found one that works
			inserted_names.insert(new_name); // track names we consume here; shouldn't be necessary due to ++int? but just in case

			// *TODO factor out below into a rename()?

			LL_INFOS("Windlight") << "Renamed " << old_key.name << " (scope" << old_key.scope << ") to "
				<< new_key.name << " (scope " << new_key.scope << ")" << LL_ENDL;

			// update name in sky
			iter->second.mName = new_name;

			// update keys in day cycle
			for(std::map<F32, LLWLParamKey>::iterator frame = cycle.mTimeMap.begin(); frame != cycle.mTimeMap.end(); ++frame)
			{
				if (frame->second == old_key)
				{
					frame->second = new_key;
				}
			}

			// add to master sky map
			mParamList[new_key] = iter->second;
		}

		final_references[new_key] = iter->second;
	}

	return final_references;
}

LLSD LLWLParamManager::createSkyMap(std::map<LLWLParamKey, LLWLParamSet> refs)
{
	LLSD skies = LLSD::emptyMap();
	for(std::map<LLWLParamKey, LLWLParamSet>::iterator iter = refs.begin(); iter != refs.end(); ++iter)
	{
		skies.insert(iter->first.name, iter->second.getAll());
	}
	return skies;
}

void LLWLParamManager::addAllSkies(const LLWLParamKey::EScope scope, const LLSD& sky_presets)
{
	for(LLSD::map_const_iterator iter = sky_presets.beginMap(); iter != sky_presets.endMap(); ++iter)
	{
		LLWLParamSet set;
		set.setAll(iter->second);
		mParamList[LLWLParamKey(iter->first, scope)] = set;
	}
}

void LLWLParamManager::loadPresets(const std::string& file_name)
{
	std::string path_name(gDirUtilp->getExpandedFilename(LL_PATH_APP_SETTINGS, "windlight/skies", ""));
	LL_INFOS2("AppInit", "Shaders") << "Loading Default WindLight settings from " << path_name << LL_ENDL;
	
	bool found = true;
	while(found) 
	{
		std::string name;
		found = gDirUtilp->getNextFileInDir(path_name, "*.xml", name, false);
		if(found)
		{
			name=name.erase(name.length()-4);

			// bugfix for SL-46920: preventing filenames that break stuff.
			char * curl_str = curl_unescape(name.c_str(), name.size());
			std::string unescaped_name(curl_str);
			curl_free(curl_str);
			curl_str = NULL;

			LL_DEBUGS2("AppInit", "Shaders") << "name: " << name << LL_ENDL;
			loadPreset(LLWLParamKey(unescaped_name, LLWLParamKey::SCOPE_LOCAL),FALSE);
		}
	}

	// And repeat for user presets, note the user presets will modify any system presets already loaded

	std::string path_name2(gDirUtilp->getExpandedFilename( LL_PATH_USER_SETTINGS , "windlight/skies", ""));
	LL_INFOS2("AppInit", "Shaders") << "Loading User WindLight settings from " << path_name2 << LL_ENDL;
	
	found = true;
	while(found) 
	{
		std::string name;
		found = gDirUtilp->getNextFileInDir(path_name2, "*.xml", name, false);
		if(found)
		{
			name=name.erase(name.length()-4);

			// bugfix for SL-46920: preventing filenames that break stuff.
			char * curl_str = curl_unescape(name.c_str(), name.size());
			std::string unescaped_name(curl_str);
			curl_free(curl_str);
			curl_str = NULL;

			LL_DEBUGS2("AppInit", "Shaders") << "name: " << name << LL_ENDL;
			loadPreset(LLWLParamKey(unescaped_name,LLWLParamKey::SCOPE_LOCAL),FALSE);
		}
	}

}

// untested and unmaintained!  sanity-check me before using
/*
void LLWLParamManager::savePresets(const std::string & fileName)
{
	//Nobody currently calls me, but if they did, then its reasonable to write the data out to the user's folder
	//and not over the RO system wide version.

	LLSD paramsData(LLSD::emptyMap());
	
	std::string pathName(gDirUtilp->getExpandedFilename( LL_PATH_USER_SETTINGS , "windlight", fileName));

	for(std::map<LLWLParamKey, LLWLParamSet>::iterator mIt = mParamList.begin();
		mIt != mParamList.end();
		++mIt) 
	{
		paramsData[mIt->first.name] = mIt->second.getAll();
	}

	llofstream presetsXML(pathName);

	LLPointer<LLSDFormatter> formatter = new LLSDXMLFormatter();

	formatter->format(paramsData, presetsXML, LLSDFormatter::OPTIONS_PRETTY);

	presetsXML.close();
}
*/

void LLWLParamManager::loadPreset(const LLWLParamKey key, bool propagate)
{
	if(mParamList.find(key) == mParamList.end())			// key does not already exist in mapping
	{
		if(key.scope == LLWLParamKey::SCOPE_LOCAL)			// local scope, so try to load from file
		{
			// bugfix for SL-46920: preventing filenames that break stuff.
			char * curl_str = curl_escape(key.name.c_str(), key.name.size());
			std::string escaped_filename(curl_str);
			curl_free(curl_str);
			curl_str = NULL;

			escaped_filename += ".xml";

			std::string pathName(gDirUtilp->getExpandedFilename(LL_PATH_APP_SETTINGS, "windlight/skies", escaped_filename));
			llinfos << "Loading WindLight sky setting from " << pathName << llendl;

			llifstream presetsXML;
			presetsXML.open(pathName.c_str());

			// That failed, try loading from the users area instead.
			if(!presetsXML)
			{
				pathName=gDirUtilp->getExpandedFilename( LL_PATH_USER_SETTINGS , "windlight/skies", escaped_filename);
				llinfos << "Loading User WindLight sky setting from " << pathName << llendl;
				presetsXML.open(pathName.c_str());
			}

			if (presetsXML)
			{
				loadPresetFromXML(key, presetsXML);
				presetsXML.close();
			} 
			else 
			{
				llwarns << "Could not load local WindLight sky setting " << key.toString() << llendl;
				return;
			}
		}
		else
		{
			llwarns << "Attempted to load non-local WindLight sky settings " << key.toString() << "; not found in parameter mapping." << llendl;
			return;
		}		
	}

	if(propagate)
	{
		getParamSet(key, mCurParams);
		propagateParameters();
	}
}

void LLWLParamManager::loadPresetFromXML(LLWLParamKey key, std::istream & presetsXML)
{
	LLSD paramsData(LLSD::emptyMap());
	LLPointer<LLSDParser> parser = new LLSDXMLParser();

	parser->parse(presetsXML, paramsData, LLSDSerialize::SIZE_UNLIMITED);

	std::map<LLWLParamKey, LLWLParamSet>::iterator mIt = mParamList.find(key);

	if(mIt == mParamList.end()) addParamSet(key, paramsData);
	else setParamSet(key, paramsData);
}

void LLWLParamManager::savePreset(LLWLParamKey key)
{
	// bugfix for SL-46920: preventing filenames that break stuff.
	char * curl_str = curl_escape(key.name.c_str(), key.name.size());
	std::string escaped_filename(curl_str);
	curl_free(curl_str);
	curl_str = NULL;

	escaped_filename += ".xml";

	// make an empty llsd
	LLSD paramsData(LLSD::emptyMap());
	std::string pathName(gDirUtilp->getExpandedFilename( LL_PATH_USER_SETTINGS , "windlight/skies", escaped_filename));

	// fill it with LLSD windlight params
	paramsData = mParamList[key].getAll();

	// write to file
	llofstream presetsXML(pathName);
	LLPointer<LLSDFormatter> formatter = new LLSDXMLFormatter();
	formatter->format(paramsData, presetsXML, LLSDFormatter::OPTIONS_PRETTY);
	presetsXML.close();

	propagateParameters();
}

void LLWLParamManager::updateShaderUniforms(LLGLSLShader * shader)
{
	if (gPipeline.canUseWindLightShaders())
	{
		mCurParams.update(shader);
	}

	if (shader->mShaderGroup == LLGLSLShader::SG_DEFAULT)
	{
		shader->uniform4fv(LLViewerShaderMgr::LIGHTNORM, 1, mRotatedLightDir.mV);
		shader->uniform3fv("camPosLocal", 1, LLViewerCamera::getInstance()->getOrigin().mV);
	} 

	else if (shader->mShaderGroup == LLGLSLShader::SG_SKY)
	{
		shader->uniform4fv(LLViewerShaderMgr::LIGHTNORM, 1, mClampedLightDir.mV);
	}

	shader->uniform1f("scene_light_strength", mSceneLightStrength);
	
}

static LLFastTimer::DeclareTimer FTM_UPDATE_WLPARAM("Update Windlight Params");

void LLWLParamManager::propagateParameters(void)
{
	LLFastTimer ftm(FTM_UPDATE_WLPARAM);
	
	LLVector4 sunDir;
	LLVector4 moonDir;

	// set the sun direction from SunAngle and EastAngle
	F32 sinTheta = sin(mCurParams.getEastAngle());
	F32 cosTheta = cos(mCurParams.getEastAngle());

	F32 sinPhi = sin(mCurParams.getSunAngle());
	F32 cosPhi = cos(mCurParams.getSunAngle());

	sunDir.mV[0] = -sinTheta * cosPhi;
	sunDir.mV[1] = sinPhi;
	sunDir.mV[2] = cosTheta * cosPhi;
	sunDir.mV[3] = 0;

	moonDir = -sunDir;

	// is the normal from the sun or the moon
	if(sunDir.mV[1] >= 0)
	{
		mLightDir = sunDir;
	}
	else if(sunDir.mV[1] < 0 && sunDir.mV[1] > LLSky::NIGHTTIME_ELEVATION_COS)
	{
		// clamp v1 to 0 so sun never points up and causes weirdness on some machines
		LLVector3 vec(sunDir.mV[0], sunDir.mV[1], sunDir.mV[2]);
		vec.mV[1] = 0;
		vec.normVec();
		mLightDir = LLVector4(vec, 0.f);
	}
	else
	{
		mLightDir = moonDir;
	}

	// calculate the clamp lightnorm for sky (to prevent ugly banding in sky
	// when haze goes below the horizon
	mClampedLightDir = sunDir;

	if (mClampedLightDir.mV[1] < -0.1f)
	{
		mClampedLightDir.mV[1] = -0.1f;
	}

	mCurParams.set("lightnorm", mLightDir);

	// bind the variables for all shaders only if we're using WindLight
	LLViewerShaderMgr::shader_iter shaders_iter, end_shaders;
	end_shaders = LLViewerShaderMgr::instance()->endShaders();
	for(shaders_iter = LLViewerShaderMgr::instance()->beginShaders(); shaders_iter != end_shaders; ++shaders_iter) 
	{
		if (shaders_iter->mProgramObject != 0
			&& (gPipeline.canUseWindLightShaders()
				|| shaders_iter->mShaderGroup == LLGLSLShader::SG_WATER))
		{
			shaders_iter->mUniformsDirty = TRUE;
		}
	}

	// get the cfr version of the sun's direction
	LLVector3 cfrSunDir(sunDir.mV[2], sunDir.mV[0], sunDir.mV[1]);

	// set direction and don't allow overriding
	gSky.setSunDirection(cfrSunDir, LLVector3(0,0,0));
	gSky.setOverrideSun(TRUE);
}

void LLWLParamManager::update(LLViewerCamera * cam)
{
	LLFastTimer ftm(FTM_UPDATE_WLPARAM);
	
	// update clouds, sun, and general
	mCurParams.updateCloudScrolling();
	
	// update only if running
	if(mAnimator.getIsRunning()) 
	{
		mAnimator.update(mCurParams);
	}

	// update the shaders and the menu
	propagateParameters();
	
	// sync menus if they exist
	if(LLFloaterWindLight::isOpen()) 
	{
		LLFloaterWindLight::instance()->syncMenu();
	}
	if(LLFloaterDayCycle::isOpen()) 
	{
		LLFloaterDayCycle::instance()->syncMenu();
	}
	if(LLFloaterEnvSettings::isOpen()) 
	{
		LLFloaterEnvSettings::instance()->syncMenu();
	}

	F32 camYaw = cam->getYaw();

	stop_glerror();

	// *TODO: potential optimization - this block may only need to be
	// executed some of the time.  For example for water shaders only.
	{
		F32 camYawDelta = mSunDeltaYaw * DEG_TO_RAD;
		
		LLVector3 lightNorm3(mLightDir);
		lightNorm3 *= LLQuaternion(-(camYaw + camYawDelta), LLVector3(0.f, 1.f, 0.f));
		mRotatedLightDir = LLVector4(lightNorm3, 0.f);

		LLViewerShaderMgr::shader_iter shaders_iter, end_shaders;
		end_shaders = LLViewerShaderMgr::instance()->endShaders();
		for(shaders_iter = LLViewerShaderMgr::instance()->beginShaders(); shaders_iter != end_shaders; ++shaders_iter)
		{
			if (shaders_iter->mProgramObject != 0
				&& (gPipeline.canUseWindLightShaders()
				|| shaders_iter->mShaderGroup == LLGLSLShader::SG_WATER))
			{
				shaders_iter->mUniformsDirty = TRUE;
			}
		}
	}
}

void LLWLParamManager::resetAnimator(F32 curTime, bool run)
{
	mAnimator.setTrack(mDay.mTimeMap, mDay.mDayRate, 
		curTime, run);

	return;
}

bool LLWLParamManager::addParamSet(const LLWLParamKey& key, LLWLParamSet& param)
{
	// add a new one if not one there already
	std::map<LLWLParamKey, LLWLParamSet>::iterator mIt = mParamList.find(key);
	if(mIt == mParamList.end()) 
	{	
		mParamList[key] = param;
		return true;
	}

	return false;
}

BOOL LLWLParamManager::addParamSet(const LLWLParamKey& key, LLSD const & param)
{
	// add a new one if not one there already
	std::map<LLWLParamKey, LLWLParamSet>::const_iterator finder = mParamList.find(key);
	if(finder == mParamList.end())
	{
		mParamList[key].setAll(param);
		return TRUE;
	}
	else
	{
		return FALSE;
	}
}

bool LLWLParamManager::getParamSet(const LLWLParamKey& key, LLWLParamSet& param)
{
	// find it and set it
	std::map<LLWLParamKey, LLWLParamSet>::iterator mIt = mParamList.find(key);
	if(mIt != mParamList.end()) 
	{
		param = mParamList[key];
		param.mName = key.name;
		return true;
	}

	return false;
}

bool LLWLParamManager::setParamSet(const LLWLParamKey& key, LLWLParamSet& param)
{
	mParamList[key] = param;

	return true;
}

bool LLWLParamManager::setParamSet(const LLWLParamKey& key, const LLSD & param)
{
	// quick, non robust (we won't be working with files, but assets) check
	// this might not actually be true anymore....
	if(!param.isMap()) 
	{
		return false;
	}
	
	mParamList[key].setAll(param);

	return true;
}

void LLWLParamManager::removeParamSet(const LLWLParamKey& key, bool delete_from_disk)
{
	// remove from param list
	std::map<LLWLParamKey, LLWLParamSet>::iterator mIt = mParamList.find(key);
	if(mIt != mParamList.end()) 
	{
		mParamList.erase(mIt);
	}
	else
	{
		LL_WARNS("WindLight") << "Unable to delete key " << key.toString() << "; not found." << LL_ENDL;
	}

	mDay.removeReferencesTo(key);

	if(delete_from_disk && key.scope == LLWLParamKey::SCOPE_LOCAL)
	{
		std::string path_name(gDirUtilp->getExpandedFilename( LL_PATH_USER_SETTINGS , "windlight/skies", ""));
		
		// use full curl escaped name
		char * curl_str = curl_escape(key.name.c_str(), key.name.size());
		std::string escaped_name(curl_str);
		curl_free(curl_str);
		curl_str = NULL;
		
		if(gDirUtilp->deleteFilesInDir(path_name, escaped_name + ".xml") < 1)
		{
			LL_WARNS("WindLight") << "Unable to delete key " << key.toString() << " from disk; not found." << LL_ENDL;
		}
	}
}


// virtual static
void LLWLParamManager::initSingleton()
{
	loadPresets(LLStringUtil::null);

	// load the day
	mDay.loadDayCycleFromFile(std::string("Default.xml"));

	// *HACK - sets cloud scrolling to what we want... fix this better in the future
	getParamSet(LLWLParamKey("Default", LLWLParamKey::SCOPE_LOCAL), mCurParams);

	// set it to noon
	resetAnimator(0.5, true);

	// but use linden time sets it to what the estate is
	mAnimator.setTimeType(LLWLAnimator::TIME_LINDEN);
}