//---------------------------------------------------------------
void LightExporter::exportLight( ExportNode* exportNode )
{
if ( !exportNode->getIsInVisualScene() )
return;
String lightId = getLightId(*exportNode);
INode * iNode = exportNode->getINode();
LightObject* lightObject = (LightObject*) (iNode->GetObjectRef());
if ( !lightObject )
return;
if ( mDocumentExporter->isExportedObject(ObjectIdentifier(lightObject)) )
return;
mDocumentExporter->insertExportedObject(ObjectIdentifier(lightObject), exportNode);
// Retrieve the target node, if we are not baking matrices.
// Baked matrices must always sample the transform!
ULONG ClassId = lightObject->ClassID().PartA();
bool isTargeted = !mDocumentExporter->getOptions().getBakeMatrices() && (ClassId == SPOT_LIGHT_CLASS_ID || ClassId == TDIR_LIGHT_CLASS_ID);
INode* targetNode = isTargeted ? iNode->GetTarget() : 0;
// some lights are not supported at all
switch (ClassId)
{
case FSPOT_LIGHT_CLASS_ID:
case SPOT_LIGHT_CLASS_ID:
case DIR_LIGHT_CLASS_ID:
case TDIR_LIGHT_CLASS_ID:
case SKY_LIGHT_CLASS_ID_PART_A:
case OMNI_LIGHT_CLASS_ID:
break;
default:
return;
}
// Determine the light's type
bool isSpot = false;
bool isDirectional = false;
bool isPoint = false;
bool isSky = false;
COLLADASW::Light::LightType lightType;
switch (ClassId)
{
case FSPOT_LIGHT_CLASS_ID:
case SPOT_LIGHT_CLASS_ID:
lightType = COLLADASW::Light::SPOT;
isSpot = true;
break;
case DIR_LIGHT_CLASS_ID:
case TDIR_LIGHT_CLASS_ID:
lightType = COLLADASW::Light::DIRECTIONAL;
isDirectional = true;
break;
case SKY_LIGHT_CLASS_ID_PART_A:
lightType = COLLADASW::Light::POINT;
isSky = true;
break;
case OMNI_LIGHT_CLASS_ID:
lightType = COLLADASW::Light::POINT;
isPoint = true;
break;
}
COLLADASW::Light * colladaLight = 0;
switch ( lightType )
{
case COLLADASW::Light::DIRECTIONAL:
colladaLight = new COLLADASW::DirectionalLight(COLLADASW::LibraryLights::mSW, lightId, COLLADASW::Utils::checkNCName(NativeString(exportNode->getINode()->GetName())));
break;
case COLLADASW::Light::POINT:
colladaLight = new COLLADASW::PointLight(COLLADASW::LibraryLights::mSW, lightId, COLLADASW::Utils::checkNCName(NativeString(exportNode->getINode()->GetName())));
break;
case COLLADASW::Light::SPOT:
colladaLight = new COLLADASW::SpotLight(COLLADASW::LibraryLights::mSW, lightId, COLLADASW::Utils::checkNCName(NativeString(exportNode->getINode()->GetName())));
break;
}
// Retrieve the parameter block
IParamBlock* parameters = 0;
IParamBlock2* parametersSky = 0;
if (isSky)
parametersSky = (IParamBlock2*) lightObject->GetReference(MaxLight::PBLOCK_REF_SKY);
else
parameters = (IParamBlock*) lightObject->GetReference(MaxLight::PBLOCK_REF);
if (!parameters && !parametersSky)
{
delete colladaLight;
return;
}
if (parameters)
{
bool hasAnimatedColor = mAnimationExporter->addAnimatedParameter(parameters, MaxLight::PB_COLOR, lightId, colladaLight->getColorDefaultSid(), 0 );
colladaLight->setColor(EffectExporter::maxColor2Color(parameters->GetColor(MaxLight::PB_COLOR)), hasAnimatedColor);
}
else if (parametersSky )
{
bool hasAnimatedColor = mAnimationExporter->addAnimatedParameter(parametersSky, MaxLight::PB_SKY_COLOR, lightId, colladaLight->getColorDefaultSid(), 0 );
colladaLight->setColor(EffectExporter::maxColor2Color(parametersSky->GetColor(MaxLight::PB_SKY_COLOR)), hasAnimatedColor);
}
if (isSpot || isPoint)
{
int decayFunction = parameters->GetInt(isPoint ? MaxLight::PB_DECAY : MaxLight::PB_OMNIDECAY, mDocumentExporter->getOptions().getAnimationStart());
switch (decayFunction)
{
case 1:
colladaLight->setConstantAttenuation(0.0f);
colladaLight->setLinearAttenuation(1.0f);
break;
case 2:
colladaLight->setConstantAttenuation(0.0f);
colladaLight->setQuadraticAttenuation(1.0f);
break;
case 0:
default:
colladaLight->setConstantAttenuation(1.0f);
break;
}
}
else if (isSky)
{
colladaLight->setConstantAttenuation(1.0f);
}
setExtraTechnique(colladaLight);
if ( parameters )
addParamBlockAnimatedExtraParameters(LIGHT_ELEMENT, LIGHT_PARAMETERS, LIGHT_PARAMETER_COUNT, parameters, lightId);
else
addParamBlockAnimatedExtraParameters(SKYLIGHT_ELEMENT, SKYLIGHT_PARAMETERS, SKYLIGHT_PARAMETER_COUNT, parametersSky, lightId);
// add all the information to extra tag, that are not contained in IParamBlock
if (isSpot || isDirectional || isPoint)
{
GenLight* light = (GenLight*)(lightObject);
if (!light)
{
delete colladaLight;
return;
}
// Export the overshoot flag for directional lights
if (isDirectional || isSpot)
{
addExtraChildParameter(LIGHT_ELEMENT, OVERSHOOT_PARAMETER, light->GetOvershoot() != false);
}
addExtraChildParameter(LIGHT_ELEMENT, DECAY_TYPE_PARAMETER, (int)light->GetDecayType());
addExtraChildParameter(LIGHT_ELEMENT, USE_NEAR_ATTENUATION_PARAMETER, (light->GetUseAttenNear() != false));
addExtraChildParameter(LIGHT_ELEMENT, USE_FAR_ATTENUATION_PARAMETER, (light->GetUseAtten() != false));
exportShadowParameters(light);
if (light->GetProjector())
{
Texmap* projectorMap = light->GetProjMap();
if (projectorMap)
{
String imageId = exportTexMap(projectorMap);
if ( !imageId.empty() )
{
addExtraChildParameter(LIGHT_ELEMENT, LIGHT_MAP_ELEMENT, "#" + imageId);
}
}
}
}
else // isSky
{
Texmap *colorMap = parametersSky->GetTexmap(MaxLight::PB_SKY_COLOR_MAP, mDocumentExporter->getOptions().getAnimationStart());
String imageId = exportTexMap(colorMap);
if ( !imageId.empty())
{
addExtraChildParameter(SKYLIGHT_ELEMENT, SKYLIGHT_COLORMAP_ELEMENT, "#" + imageId);
}
}
addLight(*colladaLight);
delete colladaLight;
}
