C++ AACube::getScale方法代码示例

void DiffTraversal::Waypoint::getNextVisibleElementDifferential(DiffTraversal::VisibleElement& next,
        const DiffTraversal::View& view, const DiffTraversal::View& lastView) {
    if (_nextIndex == -1) {
        // root case is special
        ++_nextIndex;
        EntityTreeElementPointer element = _weakElement.lock();
        next.element = element;
        next.intersection = ViewFrustum::INTERSECT;
        return;
    } else if (_nextIndex < NUMBER_OF_CHILDREN) {
        EntityTreeElementPointer element = _weakElement.lock();
        if (element) {
            while (_nextIndex < NUMBER_OF_CHILDREN) {
                EntityTreeElementPointer nextElement = element->getChildAtIndex(_nextIndex);
                ++_nextIndex;
                if (nextElement) {
                    AACube cube = nextElement->getAACube();
                    // check for LOD truncation
                    float distance = glm::distance(view.viewFrustum.getPosition(), cube.calcCenter()) + MIN_VISIBLE_DISTANCE;
                    float angularDiameter = cube.getScale() / distance;
                    if (angularDiameter > MIN_ELEMENT_ANGULAR_DIAMETER * view.lodScaleFactor) {
                        if (view.viewFrustum.calculateCubeKeyholeIntersection(cube) != ViewFrustum::OUTSIDE) {
                            next.element = nextElement;
                            next.intersection = ViewFrustum::OUTSIDE;
                            return;
                        }
                    }
                }
            }
        }
    }
    next.element.reset();
    next.intersection = ViewFrustum::OUTSIDE;
}

// Similar strategy to getProjectedPolygon() we use the knowledge of camera position relative to the
// axis-aligned voxels to determine which of the voxels vertices must be the furthest. No need for
// squares and square-roots. Just compares.
void ViewFrustum::getFurthestPointFromCamera(const AACube& box, glm::vec3& furthestPoint) const {
    const glm::vec3& bottomNearRight = box.getCorner();
    float scale = box.getScale();
    float halfScale = scale * 0.5f;

    if (_position.x < bottomNearRight.x + halfScale) {
        // we are to the right of the center, so the left edge is furthest
        furthestPoint.x = bottomNearRight.x + scale;
    } else {
        furthestPoint.x = bottomNearRight.x;
    }

    if (_position.y < bottomNearRight.y + halfScale) {
        // we are below of the center, so the top edge is furthest
        furthestPoint.y = bottomNearRight.y + scale;
    } else {
        furthestPoint.y = bottomNearRight.y;
    }

    if (_position.z < bottomNearRight.z + halfScale) {
        // we are to the near side of the center, so the far side edge is furthest
        furthestPoint.z = bottomNearRight.z + scale;
    } else {
        furthestPoint.z = bottomNearRight.z;
    }
}

float ConicalViewFrustum::getAngularSize(const AACube& cube) const {
    auto radius = 0.5f * SQRT_THREE * cube.getScale(); // radius of bounding sphere
    auto position = cube.calcCenter() - _position; // position of bounding sphere in view-frame
    float distance = glm::length(position);

    return getAngularSize(distance, radius);
}

int OctreeElement::getMyChildContaining(const AACube& cube) const {
    float ourScale = getScale();
    float cubeScale = cube.getScale();

    // TODO: consider changing this to assert()
    if (cubeScale > ourScale) {
        qCDebug(octree) << "UNEXPECTED -- OctreeElement::getMyChildContaining() -- (cubeScale > ourScale)";
        qCDebug(octree) << "    cube=" << cube;
        qCDebug(octree) << "    elements AACube=" << _cube;
        qCDebug(octree) << "    cubeScale=" << cubeScale;
        qCDebug(octree) << "    ourScale=" << ourScale;
        assert(false);
    }

    // Determine which of our children the minimum and maximum corners of the cube live in...
    glm::vec3 cubeCornerMinimum = glm::clamp(cube.getCorner(), (float)-HALF_TREE_SCALE, (float)HALF_TREE_SCALE);
    glm::vec3 cubeCornerMaximum = glm::clamp(cube.calcTopFarLeft(), (float)-HALF_TREE_SCALE, (float)HALF_TREE_SCALE);

    if (_cube.contains(cubeCornerMinimum) && _cube.contains(cubeCornerMaximum)) {
        int childIndexCubeMinimum = getMyChildContainingPoint(cubeCornerMinimum);
        int childIndexCubeMaximum = getMyChildContainingPoint(cubeCornerMaximum);

        // If the minimum and maximum corners of the cube are in two different children's cubes, then we are the containing element
        if (childIndexCubeMinimum != childIndexCubeMaximum) {
            return CHILD_UNKNOWN;
        }

        return childIndexCubeMinimum; // either would do, they are the same
    }
    return CHILD_UNKNOWN; // since cube is not contained in our element, it can't be in one of our children
}

QScriptValue aaCubeToScriptValue(QScriptEngine* engine, const AACube& aaCube) {
    QScriptValue obj = engine->newObject();
    const glm::vec3& corner = aaCube.getCorner();
    obj.setProperty("x", corner.x);
    obj.setProperty("y", corner.y);
    obj.setProperty("z", corner.z);
    obj.setProperty("scale", aaCube.getScale());
    return obj;
}

bool OctreePacketData::appendValue(const AACube& aaCube) {
    aaCubeData cube { aaCube.getCorner(), aaCube.getScale() };
    const unsigned char* data = (const unsigned char*)&cube;
    int length = sizeof(aaCubeData);
    bool success = append(data, length);
    if (success) {
        _bytesOfValues += length;
        _totalBytesOfValues += length;
    }
    return success;
}

void VoxelShapeManager::updateVoxels(const quint64& now, CubeList& cubes) {
    const quint64 VOXEL_UPDATE_PERIOD = 100000; // usec
    _updateExpiry = now + VOXEL_UPDATE_PERIOD;
    PhysicsSimulation* simulation = getSimulation();
    if (!simulation) {
        return;
    }

    int numChanges = 0;
    VoxelPool::iterator voxelItr = _voxels.begin();
    while (voxelItr != _voxels.end()) {
        // look for this voxel in cubes
        CubeList::iterator cubeItr = cubes.find(voxelItr.key());
        if (cubeItr == cubes.end()) {
            // did not find it --> remove the voxel
            simulation->removeShape(voxelItr.value()._shape);
            voxelItr = _voxels.erase(voxelItr);
            ++numChanges;
        } else {
            // found it --> remove the cube
            cubes.erase(cubeItr);
            voxelItr++;
        }
    }

    // add remaining cubes to _voxels
    glm::vec3 simulationOrigin = simulation->getTranslation();
    CubeList::const_iterator cubeItr = cubes.constBegin();
    while (cubeItr != cubes.constEnd()) {
        AACube cube = cubeItr.value();
        AACubeShape* shape = new AACubeShape(cube.getScale(), cube.calcCenter() - simulationOrigin);
        shape->setEntity(this);
        VoxelInfo voxel = {cube, shape };
        _voxels.insert(cubeItr.key(), voxel);
        ++numChanges;
        ++cubeItr;
    }

    if (numChanges > 0) {
        buildShapes();
    }
}

AABox::AABox(const AACube& other) :
    _corner(other.getCorner()), _scale(other.getScale(), other.getScale(), other.getScale()) {
}

void EntityItem::recalculateCollisionShape() {
    AACube entityAACube = getMinimumAACube();
    entityAACube.scale(TREE_SCALE); // scale to meters
    _collisionShape.setTranslation(entityAACube.calcCenter());
    _collisionShape.setScale(entityAACube.getScale());
}

void EntityTests::entityTreeTests(bool verbose) {

    bool extraVerbose = false;
    int testsTaken = 0;
    int testsPassed = 0;
    int testsFailed = 0;

    if (verbose) {
        qDebug() << "******************************************************************************************";
    }
    
    qDebug() << "EntityTests::entityTreeTests()";

    // Tree, id, and entity properties used in many tests below...
    EntityTree tree;
    QUuid id = QUuid::createUuid();
    EntityItemID entityID(id);
    entityID.isKnownID = false; // this is a temporary workaround to allow local tree entities to be added with known IDs
    EntityItemProperties properties;
    float oneMeter = 1.0f;
    //float halfMeter = oneMeter / 2.0f;
    float halfOfDomain = TREE_SCALE * 0.5f;
    glm::vec3 positionNearOriginInMeters(oneMeter, oneMeter, oneMeter); // when using properties, these are in meter not tree units
    glm::vec3 positionAtCenterInMeters(halfOfDomain, halfOfDomain, halfOfDomain);
    glm::vec3 positionNearOriginInTreeUnits = positionNearOriginInMeters / (float)TREE_SCALE;
    glm::vec3 positionAtCenterInTreeUnits = positionAtCenterInMeters / (float)TREE_SCALE;

    {
        testsTaken++;
        QString testName = "add entity to tree and search";
        if (verbose) {
            qDebug() << "Test" << testsTaken <<":" << qPrintable(testName);
        }
        
        properties.setPosition(positionAtCenterInMeters);
        // TODO: Fix these unit tests.
        //properties.setRadius(halfMeter);
        //properties.setModelURL("http://s3.amazonaws.com/hifi-public/ozan/theater.fbx");

        tree.addEntity(entityID, properties);
        
        float targetRadius = oneMeter * 2.0 / (float)TREE_SCALE; // in tree units
        const EntityItem* foundEntityByRadius = tree.findClosestEntity(positionAtCenterInTreeUnits, targetRadius);
        const EntityItem* foundEntityByID = tree.findEntityByEntityItemID(entityID);
        EntityTreeElement* containingElement = tree.getContainingElement(entityID);
        AACube elementCube = containingElement ? containingElement->getAACube() : AACube();
        
        if (verbose) {
            qDebug() << "foundEntityByRadius=" << foundEntityByRadius;
            qDebug() << "foundEntityByID=" << foundEntityByID;
            qDebug() << "containingElement=" << containingElement;
            qDebug() << "containingElement.box=" 
                << elementCube.getCorner().x * TREE_SCALE << "," 
                << elementCube.getCorner().y * TREE_SCALE << ","
                << elementCube.getCorner().z * TREE_SCALE << ":" 
                << elementCube.getScale() * TREE_SCALE;
            qDebug() << "elementCube.getScale()=" << elementCube.getScale();
            //containingElement->printDebugDetails("containingElement");
        }

        bool passed = foundEntityByRadius && foundEntityByID && (foundEntityByRadius == foundEntityByID);
        if (passed) {
            testsPassed++;
        } else {
            testsFailed++;
            qDebug() << "FAILED - Test" << testsTaken <<":" << qPrintable(testName);
        }
    }

    entityID.isKnownID = true; // this is a temporary workaround to allow local tree entities to be added with known IDs

    {
        testsTaken++;
        QString testName = "change position of entity in tree";
        if (verbose) {
            qDebug() << "Test" << testsTaken <<":" << qPrintable(testName);
        }
        
        glm::vec3 newPosition = positionNearOriginInMeters;

        properties.setPosition(newPosition);

        tree.updateEntity(entityID, properties);
        
        float targetRadius = oneMeter * 2.0 / (float)TREE_SCALE; // in tree units
        const EntityItem* foundEntityByRadius = tree.findClosestEntity(positionNearOriginInTreeUnits, targetRadius);
        const EntityItem* foundEntityByID = tree.findEntityByEntityItemID(entityID);
        EntityTreeElement* containingElement = tree.getContainingElement(entityID);
        AACube elementCube = containingElement ? containingElement->getAACube() : AACube();
        
        if (verbose) {
            qDebug() << "foundEntityByRadius=" << foundEntityByRadius;
            qDebug() << "foundEntityByID=" << foundEntityByID;
            qDebug() << "containingElement=" << containingElement;
            qDebug() << "containingElement.box=" 
                << elementCube.getCorner().x * TREE_SCALE << "," 
                << elementCube.getCorner().y * TREE_SCALE << ","
                << elementCube.getCorner().z * TREE_SCALE << ":" 
                << elementCube.getScale() * TREE_SCALE;
            //containingElement->printDebugDetails("containingElement");
//.........这里部分代码省略.........