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/**
* @file llsky.cpp
* @brief IndraWorld sky class
*
* $LicenseInfo:firstyear=2000&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
// Ideas:
// -haze should be controlled by global query from sims
// -need secondary optical effects on sun (flare)
// -stars should be brought down from sims
// -star intensity should be driven by global ambient level from sims,
// so that eclipses, etc can be easily done.
//
#include "llviewerprecompiledheaders.h"
#include "llsky.h"
// linden library includes
#include "llerror.h"
#include "llmath.h"
#include "math.h"
#include "v4color.h"
#include "llviewerobjectlist.h"
#include "llviewerobject.h"
#include "llviewercamera.h"
#include "pipeline.h"
#include "lldrawpool.h"
#include "llvosky.h"
#include "llcubemap.h"
#include "llviewercontrol.h"
#include "llenvironment.h"
#include "llvowlsky.h"
F32 azimuth_from_vector(const LLVector3 &v);
F32 elevation_from_vector(const LLVector3 &v);
LLSky gSky;
// ---------------- LLSky ----------------
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
LLSky::LLSky()
{
// Set initial clear color to black
// Set fog color
mFogColor.mV[VRED] = mFogColor.mV[VGREEN] = mFogColor.mV[VBLUE] = 0.5f;
mFogColor.mV[VALPHA] = 0.0f;
mLightingGeneration = 0;
mUpdatedThisFrame = TRUE;
}
LLSky::~LLSky()
{
}
void LLSky::cleanup()
{
mVOSkyp = NULL;
mVOWLSkyp = NULL;
mVOGroundp = NULL;
}
void LLSky::destroyGL()
{
if (!mVOSkyp.isNull() && mVOSkyp->getCubeMap())
{
mVOSkyp->cleanupGL();
}
if (mVOWLSkyp.notNull())
{
mVOWLSkyp->cleanupGL();
}
}
void LLSky::restoreGL()
{
if (mVOSkyp)
{
mVOSkyp->restoreGL();
}
if (mVOWLSkyp)
{
mVOWLSkyp->restoreGL();
}
}
void LLSky::resetVertexBuffers()
{
if (gSky.mVOSkyp.notNull())
{
gPipeline.resetVertexBuffers(gSky.mVOSkyp->mDrawable);
gPipeline.resetVertexBuffers(gSky.mVOGroundp->mDrawable);
gPipeline.markRebuild(gSky.mVOSkyp->mDrawable, LLDrawable::REBUILD_ALL, TRUE);
gPipeline.markRebuild(gSky.mVOGroundp->mDrawable, LLDrawable::REBUILD_ALL, TRUE);
}
if (gSky.mVOWLSkyp.notNull())
{
gSky.mVOWLSkyp->resetVertexBuffers();
gPipeline.resetVertexBuffers(gSky.mVOWLSkyp->mDrawable);
gPipeline.markRebuild(gSky.mVOWLSkyp->mDrawable, LLDrawable::REBUILD_ALL, TRUE);
}
}
void LLSky::setSunTextures(const LLUUID& sun_texture, const LLUUID& sun_texture_next)
{
if(mVOSkyp.notNull()) {
mVOSkyp->setSunTextures(sun_texture, sun_texture_next);
}
}
void LLSky::setMoonTextures(const LLUUID& moon_texture, const LLUUID& moon_texture_next)
{
if(mVOSkyp.notNull()) {
mVOSkyp->setMoonTextures(moon_texture, moon_texture_next);
}
}
void LLSky::setCloudNoiseTextures(const LLUUID& cloud_noise_texture, const LLUUID& cloud_noise_texture_next)
{
if(mVOSkyp.notNull()) {
mVOSkyp->setCloudNoiseTextures(cloud_noise_texture, cloud_noise_texture_next);
}
}
void LLSky::setSunAndMoonDirectionsCFR(const LLVector3 &sun_direction, const LLVector3 &moon_direction)
{
if(mVOSkyp.notNull()) {
mVOSkyp->setSunAndMoonDirectionsCFR(sun_direction, moon_direction);
}
}
void LLSky::setSunDirectionCFR(const LLVector3 &sun_direction)
{
if(mVOSkyp.notNull()) {
mVOSkyp->setSunDirectionCFR(sun_direction);
}
}
void LLSky::setMoonDirectionCFR(const LLVector3 &moon_direction)
{
if(mVOSkyp.notNull()) {
mVOSkyp->setMoonDirectionCFR(moon_direction);
}
}
//////////////////////////////////////////////////////////////////////
// Public Methods
//////////////////////////////////////////////////////////////////////
void LLSky::init()
{
mVOWLSkyp = static_cast<LLVOWLSky*>(gObjectList.createObjectViewer(LLViewerObject::LL_VO_WL_SKY, NULL));
mVOWLSkyp->init();
gPipeline.createObject(mVOWLSkyp.get());
mVOSkyp = (LLVOSky *)gObjectList.createObjectViewer(LLViewerObject::LL_VO_SKY, NULL);
mVOSkyp->init();
gPipeline.createObject(mVOSkyp.get());
mVOGroundp = (LLVOGround*)gObjectList.createObjectViewer(LLViewerObject::LL_VO_GROUND, NULL);
gPipeline.createObject(mVOGroundp.get());
gSky.setFogRatio(gSavedSettings.getF32("RenderFogRatio"));
mUpdatedThisFrame = TRUE;
}
void LLSky::setCloudDensityAtAgent(F32 cloud_density)
{
if (mVOSkyp)
{
mVOSkyp->setCloudDensity(cloud_density);
}
}
void LLSky::setWind(const LLVector3& average_wind)
{
if (mVOSkyp)
{
mVOSkyp->setWind(average_wind);
}
}
//////////////////////////////////////////////////////////////////////
// Private Methods
//////////////////////////////////////////////////////////////////////
LLColor4 LLSky::getSkyFogColor() const
{
if (mVOSkyp)
{
return mVOSkyp->getSkyFogColor();
}
return LLColor4(1.f, 1.f, 1.f, 1.f);
}
void LLSky::updateFog(const F32 distance)
{
if (mVOSkyp)
{
mVOSkyp->updateFog(distance);
}
}
void LLSky::updateCull()
{
// *TODO: do culling for wl sky properly -Brad
}
void LLSky::updateSky()
{
if (!gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_SKY))
{
return;
}
if (mVOSkyp)
{
mVOSkyp->updateSky();
}
}
void LLSky::setFogRatio(const F32 fog_ratio)
{
if (mVOSkyp)
{
mVOSkyp->setFogRatio(fog_ratio);
}
}
F32 LLSky::getFogRatio() const
{
if (mVOSkyp)
{
return mVOSkyp->getFogRatio();
}
else
{
return 0.f;
}
}
// Returns angle (DEGREES) between the horizontal plane and "v",
// where the angle is negative when v.mV[VZ] < 0.0f
F32 elevation_from_vector(const LLVector3 &v)
{
F32 elevation = 0.0f;
F32 xy_component = (F32) sqrt(v.mV[VX] * v.mV[VX] + v.mV[VY] * v.mV[VY]);
if (xy_component != 0.0f)
{
elevation = RAD_TO_DEG * (F32) atan(v.mV[VZ]/xy_component);
}
else
{
if (v.mV[VZ] > 0.f)
{
elevation = 90.f;
}
else
{
elevation = -90.f;
}
}
return elevation;
}
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