/**
* @return Box in light space containing shadow caster and receiver (scene dependent)
*/
AABBox<float> ShadowManager::createSceneDependentBox(const AABBox<float> &aabboxSceneIndependent, const OBBox<float> &obboxSceneIndependentViewSpace,
const std::set<Model *> &models, const Matrix4<float> &lightViewMatrix) const
{
AABBox<float> aabboxSceneDependent;
bool boxInitialized = false;
AABBox<float> aabboxSceneIndependentViewSpace = obboxSceneIndependentViewSpace.toAABBox();
for(std::set<Model *>::iterator it = models.begin(); it!=models.end(); ++it)
{
const Model* model = *it;
if(model->isProduceShadow())
{
const std::vector<AABBox<float>> &splittedAABBox = model->getSplittedAABBox();
for(unsigned int i=0; i<splittedAABBox.size(); ++i)
{
if(splittedAABBox.size()==1 || obboxSceneIndependentViewSpace.collideWithAABBox(splittedAABBox[i]))
{
if(boxInitialized)
{
aabboxSceneDependent = aabboxSceneDependent.merge(lightViewMatrix * splittedAABBox[i]);
}else
{
aabboxSceneDependent = lightViewMatrix * splittedAABBox[i];
boxInitialized = true;
}
}
}
}
}
Point3<float> cutMin(
aabboxSceneDependent.getMin().X<aabboxSceneIndependent.getMin().X ? aabboxSceneIndependent.getMin().X : aabboxSceneDependent.getMin().X,
aabboxSceneDependent.getMin().Y<aabboxSceneIndependent.getMin().Y ? aabboxSceneIndependent.getMin().Y : aabboxSceneDependent.getMin().Y,
aabboxSceneIndependent.getMin().Z); //shadow can be projected outside the box: value cannot be capped
Point3<float> cutMax(
aabboxSceneDependent.getMax().X>aabboxSceneIndependent.getMax().X ? aabboxSceneIndependent.getMax().X : aabboxSceneDependent.getMax().X,
aabboxSceneDependent.getMax().Y>aabboxSceneIndependent.getMax().Y ? aabboxSceneIndependent.getMax().Y : aabboxSceneDependent.getMax().Y,
aabboxSceneDependent.getMax().Z>aabboxSceneIndependent.getMax().Z ? aabboxSceneIndependent.getMax().Z : aabboxSceneDependent.getMax().Z);
cutMin.X = (cutMin.X<0.0f) ? cutMin.X-(lightViewOverflowStepSize+fmod(cutMin.X, lightViewOverflowStepSize)) : cutMin.X-fmod(cutMin.X, lightViewOverflowStepSize);
cutMin.Y = (cutMin.Y<0.0f) ? cutMin.Y-(lightViewOverflowStepSize+fmod(cutMin.Y, lightViewOverflowStepSize)) : cutMin.Y-fmod(cutMin.Y, lightViewOverflowStepSize);
cutMin.Z = (cutMin.Z<0.0f) ? cutMin.Z-(lightViewOverflowStepSize+fmod(cutMin.Z, lightViewOverflowStepSize)) : cutMin.Z-fmod(cutMin.Z, lightViewOverflowStepSize);
cutMax.X = (cutMax.X<0.0f) ? cutMax.X-fmod(cutMax.X, lightViewOverflowStepSize) : cutMax.X+(lightViewOverflowStepSize-fmod(cutMax.X, lightViewOverflowStepSize));
cutMax.Y = (cutMax.Y<0.0f) ? cutMax.Y-fmod(cutMax.Y, lightViewOverflowStepSize) : cutMax.Y+(lightViewOverflowStepSize-fmod(cutMax.Y, lightViewOverflowStepSize));
cutMax.Z = (cutMax.Z<0.0f) ? cutMax.Z-fmod(cutMax.Z, lightViewOverflowStepSize) : cutMax.Z+(lightViewOverflowStepSize-fmod(cutMax.Z, lightViewOverflowStepSize));
return AABBox<float>(cutMin, cutMax);
}
AABBox<float> CollisionCompoundShape::toAABBox(const PhysicsTransform &physicsTransform) const
{
Point3<float> rotatedTranslation = physicsTransform.getOrientation().rotatePoint(Point3<float>(localizedShapes[0]->translation));
Point3<float> finalPosition = physicsTransform.getPosition().translate(rotatedTranslation.toVector());
PhysicsTransform shapeWorldTransform(finalPosition, physicsTransform.getOrientation());
AABBox<float> globalCompoundBox = localizedShapes[0]->shape->toAABBox(shapeWorldTransform);
for(unsigned int i=1; i<localizedShapes.size(); ++i)
{
rotatedTranslation = physicsTransform.getOrientation().rotatePoint(Point3<float>(localizedShapes[i]->translation));
finalPosition = physicsTransform.getPosition().translate(rotatedTranslation.toVector());
shapeWorldTransform.setPosition(finalPosition);
AABBox<float> compoundBox = localizedShapes[i]->shape->toAABBox(shapeWorldTransform);
globalCompoundBox = globalCompoundBox.merge(compoundBox);
}
return globalCompoundBox;
}
