initialize_particle_positions()

void MayaFlux::Nodes::Network::ParticleNetwork::initialize_particle_positions ( InitializationMode  mode )

private

Initialize particles based on mode.

Definition at line 547 of file ParticleNetwork.cpp.

{
    switch (mode) {
    case InitializationMode::RANDOM_VOLUME:
        for (auto& particle : m_particles) {
            particle.point->set_position(random_position_volume());
        }
        break;
 
    case InitializationMode::RANDOM_SURFACE:
        for (auto& particle : m_particles) {
            particle.point->set_position(random_position_surface());
        }
        break;
 
    case InitializationMode::GRID: {
        auto grid_size = static_cast<size_t>(std::cbrt(m_particles.size()));
        glm::vec3 spacing = (m_bounds_max - m_bounds_min) / static_cast<float>(grid_size);
 
        size_t idx = 0;
        for (size_t x = 0; x < grid_size && idx < m_particles.size(); ++x) {
            for (size_t y = 0; y < grid_size && idx < m_particles.size(); ++y) {
                for (size_t z = 0; z < grid_size && idx < m_particles.size(); ++z) {
                    glm::vec3 pos = m_bounds_min + glm::vec3(x, y, z) * spacing;
                    m_particles[idx++].point->set_position(pos);
                }
            }
        }
        break;
    }
 
    case InitializationMode::SPHERE_VOLUME: {
        glm::vec3 center = (m_bounds_min + m_bounds_max) * 0.5F;
        float radius = glm::length(m_bounds_max - center);
        for (auto& particle : m_particles) {
            particle.point->set_position(center + random_position_sphere(radius));
        }
        break;
    }
 
    case InitializationMode::SPHERE_SURFACE: {
        glm::vec3 center = (m_bounds_min + m_bounds_max) * 0.5F;
        float radius = glm::length(m_bounds_max - center);
        for (auto& particle : m_particles) {
            particle.point->set_position(center + random_position_sphere_surface(radius));
        }
        break;
    }
 
    case InitializationMode::CUSTOM:
        break;
    }
 
    update_point_nodes();
}

References CUSTOM, GRID, m_bounds_max, m_bounds_min, m_particles, random_position_sphere(), random_position_sphere_surface(), random_position_surface(), random_position_volume(), RANDOM_SURFACE, RANDOM_VOLUME, SPHERE_SURFACE, SPHERE_VOLUME, and update_point_nodes().

Referenced by initialize(), reinitialize_positions(), and reset().

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