コード例 #1
0
ファイル: SceneManager.cpp プロジェクト: GHScan/DailyProjects
std::vector<Entity*> SceneManager::clipEntityWithFrustum(
        const std::vector<Entity*>& ents) const
{
    PlaneList frustumPlanes = getCamera()->getVolumePlanes(EPID_all);

    std::vector<Entity*> rents;
    for (int i = 0; i < (int)ents.size(); ++i) {
        Entity* ent = ents[i];
        Matrix4x4 worldViewMat = ent->getSceneNode()->getWorldMatrix() * getCamera()->getViewMatrix();

        AABB aabb = ent->getBoundAABB();
        transform(aabb, worldViewMat);
        if (intersect(frustumPlanes, aabb.getCorners()) == EIC_front) continue;

        Sphere sphere = ent->getBoundSphere();
        transform(sphere, worldViewMat);
        if (intersect(frustumPlanes, sphere) == EIC_front) continue;

        rents.push_back(ent);
    }

    Log::instance()->addMsg("frustum clip : %d/%d", ents.size() - rents.size(), ents.size());

    return rents;
}
コード例 #2
0
ファイル: ConvexHull.cpp プロジェクト: savant-nz/carbon
bool ConvexHull::intersect(const AABB& aabb, const SimpleTransform& transform, const Vec3& scale) const
{
    auto corners = std::array<Vec3, 8>();
    aabb.getCorners(corners, transform, scale);

    for (auto& plane : planes_)
    {
        // Check if the AABB lies on the front of this plane, if so then there is no intersection with this convex hull
        for (auto j = 0U; j < 8; j++)
        {
            if (plane.distance(corners[j]) < 0.0f)
                break;

            if (j == 7)
                return false;
        }
    }

    return true;
}