mpri-graphics-project/MarchingCubes.cpp

#include "MarchingCubes.hpp"

const std::vector<MarchingCubes::CubeTri>
    MarchingCubes::edges_of_intersection[256] = {
    };

MarchingCubes::MarchingCubes(
        const ImplicitSurface& surface,
        const Cuboid& box,
        double resolution):
    surface(surface),
    box(box),
    resolution(resolution)
{}

void MarchingCubes::add_hint(const Cuboid& hint) {
    hints.push_back(hint);
}

Mesh MarchingCubes::operator()() {
    Mesh output;

    for(double x = box.low(0); x < box.high(0) + resolution; x += resolution)
    {
        for(double y = box.low(1); y < box.high(1) + resolution;
                y += resolution)
        {
            for(double z = box.low(2); z < box.high(2) + resolution;
                    z += resolution)
            {
                Intersections intersections;
                for(int dx=0; dx <= 1; dx++) {
                    for(int dy=0; dy <= 1; dy++) {
                        for(int dz=0; dz <= 1; dz++) {
                            double cx = x + resolution * dx;
                            double cy = y + resolution * dy;
                            double cz = z + resolution * dz;
                            intersections.set_corner(cx, cy, cz,
                                    surface(cx, cy, cz));
                        }
                    }
                }
            }
        }
    }

    return output;
}