LightManager::LightManager()
: m_sunTimer(Framework::Timer::TT_LOOP, 30.0f)
, m_ambientInterpolator()
{
m_lightTimers.reserve(NUMBER_OF_POINT_LIGHTS);
m_lightPos.reserve(NUMBER_OF_POINT_LIGHTS);
m_lightPos.push_back(LightInterpolator());
m_lightPos.push_back(LightInterpolator());
m_lightPos.push_back(LightInterpolator());
m_lightIntensity.resize(NUMBER_OF_POINT_LIGHTS, glm::vec4(0.2f, 0.2f, 0.2f, 1.0f));
std::vector<glm::vec3> posValues;
posValues.reserve(60);
posValues.push_back(glm::vec3(-50.0f, 30.0f, 70.0f));
posValues.push_back(glm::vec3(-70.0f, 30.0f, 50.0f));
posValues.push_back(glm::vec3(-70.0f, 30.0f, -50.0f));
posValues.push_back(glm::vec3(-50.0f, 30.0f, -70.0f));
posValues.push_back(glm::vec3(50.0f, 30.0f, -70.0f));
posValues.push_back(glm::vec3(70.0f, 30.0f, -50.0f));
posValues.push_back(glm::vec3(70.0f, 30.0f, 50.0f));
posValues.push_back(glm::vec3(50.0f, 30.0f, 70.0f));
m_lightPos[0].SetValues(posValues);
m_lightTimers.push_back(Framework::Timer(Framework::Timer::TT_LOOP, 15.0f));
//Right-side light.
posValues.clear();
posValues.push_back(glm::vec3(100.0f, 6.0f, 75.0f));
posValues.push_back(glm::vec3(90.0f, 8.0f, 90.0f));
posValues.push_back(glm::vec3(75.0f, 10.0f, 100.0f));
posValues.push_back(glm::vec3(60.0f, 12.0f, 90.0f));
posValues.push_back(glm::vec3(50.0f, 14.0f, 75.0f));
posValues.push_back(glm::vec3(60.0f, 16.0f, 60.0f));
posValues.push_back(glm::vec3(75.0f, 18.0f, 50.0f));
posValues.push_back(glm::vec3(90.0f, 20.0f, 60.0f));
posValues.push_back(glm::vec3(100.0f, 22.0f, 75.0f));
posValues.push_back(glm::vec3(90.0f, 24.0f, 90.0f));
posValues.push_back(glm::vec3(75.0f, 26.0f, 100.0f));
posValues.push_back(glm::vec3(60.0f, 28.0f, 90.0f));
posValues.push_back(glm::vec3(50.0f, 30.0f, 75.0f));
posValues.push_back(glm::vec3(105.0f, 9.0f, -70.0f));
posValues.push_back(glm::vec3(105.0f, 10.0f, -90.0f));
posValues.push_back(glm::vec3(72.0f, 20.0f, -90.0f));
posValues.push_back(glm::vec3(72.0f, 22.0f, -70.0f));
posValues.push_back(glm::vec3(105.0f, 32.0f, -70.0f));
posValues.push_back(glm::vec3(105.0f, 34.0f, -90.0f));
posValues.push_back(glm::vec3(72.0f, 44.0f, -90.0f));
m_lightPos[1].SetValues(posValues);
m_lightTimers.push_back(Framework::Timer(Framework::Timer::TT_LOOP, 25.0f));
//Left-side light.
posValues.clear();
posValues.push_back(glm::vec3(-7.0f, 35.0f, 1.0f));
posValues.push_back(glm::vec3(8.0f, 40.0f, -14.0f));
posValues.push_back(glm::vec3(-7.0f, 45.0f, -29.0f));
posValues.push_back(glm::vec3(-22.0f, 50.0f, -14.0f));
posValues.push_back(glm::vec3(-7.0f, 55.0f, 1.0f));
posValues.push_back(glm::vec3(8.0f, 60.0f, -14.0f));
posValues.push_back(glm::vec3(-7.0f, 65.0f, -29.0f));
posValues.push_back(glm::vec3(-83.0f, 30.0f, -92.0f));
posValues.push_back(glm::vec3(-98.0f, 27.0f, -77.0f));
posValues.push_back(glm::vec3(-83.0f, 24.0f, -62.0f));
posValues.push_back(glm::vec3(-68.0f, 21.0f, -77.0f));
posValues.push_back(glm::vec3(-83.0f, 18.0f, -92.0f));
posValues.push_back(glm::vec3(-98.0f, 15.0f, -77.0f));
posValues.push_back(glm::vec3(-50.0f, 8.0f, 25.0f));
posValues.push_back(glm::vec3(-59.5f, 4.0f, 65.0f));
posValues.push_back(glm::vec3(-59.5f, 4.0f, 78.0f));
posValues.push_back(glm::vec3(-45.0f, 4.0f, 82.0f));
posValues.push_back(glm::vec3(-40.0f, 4.0f, 50.0f));
posValues.push_back(glm::vec3(-70.0f, 20.0f, 40.0f));
posValues.push_back(glm::vec3(-60.0f, 20.0f, 90.0f));
posValues.push_back(glm::vec3(-40.0f, 25.0f, 90.0f));
m_lightPos[2].SetValues(posValues);
m_lightTimers.push_back(Framework::Timer(Framework::Timer::TT_LOOP, 15.0f));
}
LightEnv::LightEnv( const std::string& envFilename )
: m_fLightAttenuation(40.0f)
{
std::ifstream fileStream(envFilename.c_str());
if(!fileStream.is_open())
throw std::runtime_error("Could not find the mesh file.");
TiXmlDocument theDoc;
fileStream >> theDoc;
fileStream.close();
if(theDoc.Error())
throw std::runtime_error(theDoc.ErrorDesc());
TiXmlHandle docHandle(&theDoc);
const TiXmlElement *pRootNode = docHandle.FirstChild("lightenv").ToElement();
if(!pRootNode)
throw std::runtime_error("The root node must be a 'lightenv' element.");
pRootNode->QueryFloatAttribute("atten", &m_fLightAttenuation);
m_fLightAttenuation = 1.0f / (m_fLightAttenuation * m_fLightAttenuation);
const TiXmlElement *pSunNode = docHandle.FirstChild("lightenv").FirstChild("sun").ToElement();
if(!pSunNode)
throw std::runtime_error("There must be a 'lightenv' element that has a 'sun' element as a child.");
float timerTime = 0;
if(pSunNode->QueryFloatAttribute("time", &timerTime) != TIXML_SUCCESS)
throw std::runtime_error("'sun' elements must have a 'time' attribute that is a float.");
m_sunTimer = Framework::Timer(Framework::Timer::TT_LOOP, timerTime);
LightVector ambient;
LightVector light;
LightVector background;
MaxIntensityVector maxIntensity;
for(const TiXmlElement *pKeyElem = pSunNode->FirstChildElement("key");
pKeyElem;
pKeyElem = pKeyElem->NextSiblingElement("key"))
{
float keyTime = 0;
if(pKeyElem->QueryFloatAttribute("time", &keyTime) != TIXML_SUCCESS)
throw std::runtime_error("'key' elements must have a 'time' attribute that is a float.");
//Convert from hours to normalized time.
keyTime = keyTime / 24.0f;
std::string strVec4;
if(pKeyElem->QueryStringAttribute("ambient", &strVec4) != TIXML_SUCCESS)
throw std::runtime_error("'key' elements must have an 'ambient' attribute.");
ambient.push_back(LightData(ParseVec4(strVec4), keyTime));
if(pKeyElem->QueryStringAttribute("intensity", &strVec4) != TIXML_SUCCESS)
throw std::runtime_error("'key' elements must have a 'intensity' attribute.");
light.push_back(LightData(ParseVec4(strVec4), keyTime));
if(pKeyElem->QueryStringAttribute("background", &strVec4) != TIXML_SUCCESS)
throw std::runtime_error("'key' elements must have a 'background' attribute.");
background.push_back(LightData(ParseVec4(strVec4), keyTime));
maxIntensity.push_back(MaxIntensityData(0.0f, keyTime));
if(pKeyElem->QueryFloatAttribute("max-intensity", &maxIntensity.back().first) != TIXML_SUCCESS)
throw std::runtime_error("'key' elements must have a 'max-intensity' attribute that is a float.");
}
if(ambient.empty())
throw std::runtime_error("'sun' element must have at least one 'key' element child.");
m_ambientInterpolator.SetValues(ambient);
m_sunlightInterpolator.SetValues(light);
m_backgroundInterpolator.SetValues(background);
m_maxIntensityInterpolator.SetValues(maxIntensity);
const TiXmlElement *pLightNode = docHandle.FirstChild("lightenv").FirstChild("light").ToElement();
for(; pLightNode; pLightNode = pLightNode->NextSiblingElement("light"))
{
if(m_lightPos.size() + 1 == MAX_NUMBER_OF_LIGHTS)
throw std::runtime_error("Too many lights specified.");
float lightTime = 0;
if(pLightNode->QueryFloatAttribute("time", &lightTime) != TIXML_SUCCESS)
throw std::runtime_error("'light' elements must have a 'time' attribute that is a float.");
m_lightTimers.push_back(Framework::Timer(Framework::Timer::TT_LOOP, lightTime));
std::string strVec4;
if(pLightNode->QueryStringAttribute("intensity", &strVec4) != TIXML_SUCCESS)
throw std::runtime_error("'light' elements must have an 'intensity' attribute.");
m_lightIntensity.push_back(ParseVec4(strVec4));
std::vector<glm::vec3> posValues;
for(const TiXmlElement *pKeyElem = pLightNode->FirstChildElement("key");
pKeyElem;
pKeyElem = pKeyElem->NextSiblingElement("key"))
{
posValues.push_back(ParseVec3(pKeyElem->GetText()));
}
if(posValues.empty())
throw std::runtime_error("'light' elements must have at least one 'key' element child.");
m_lightPos.push_back(LightInterpolator());
m_lightPos.back().SetValues(posValues);
}
}