main.cpp

#include "camera.h"
#include "scene.h"
#include "primitives.h"
#include "color.h"
#include "bitmap.h"

#include <iostream>
#include <fstream>
#include <stdlib.h>
#include <cstring>

extern "C" {
#include "lua.h"
#include "lualib.h"
}

#include <luabind/luabind.hpp>

using namespace luabind;

int main(int argc, char** argv) {
  if(argc == 2) {
    lua_State* L = luaL_newstate();
    open(L);
    module(L) [
      class_<Color>("Color")
        .def(constructor<uint16_t,uint16_t,uint16_t>())
        .def("r", &Color::r)
        .def("g", &Color::g)
        .def("b", &Color::b),
      class_<Object>("Object")
        .def(constructor<Vec3, Color>()),
      class_<Sphere, Object>("Sphere")
        .def(constructor<Vec3,Color,double>()),
      class_<light>("light")
        .def(constructor<Vec3,double>())
        .def_readwrite("position", &light::pos)
        .def_readwrite("intensity", &light::intensity),
      class_<Vec3>("Vec3")
        .def(constructor<double,double,double>())
        .def_readwrite("x", &Vec3::m_x)
        .def_readwrite("y", &Vec3::m_y)
        .def_readwrite("z", &Vec3::m_z),
      class_<Camera>("Camera")
        .def(constructor<uint16_t,uint16_t,Scene*>())
        .def("render", &Camera::render),
      class_<Scene>("Scene")
        .def(constructor<>())
        .def("add_object", &Scene::add_object)
        .def("add_light", &Scene::add_light)
    ];

    luaL_openlibs(L);
    if(luaL_dofile(L, argv[1])) {
      std::cout << lua_tostring(L, -1) << std::endl;
    }

    std::cout << "Execution finished." << std::endl;
    //lua_close(L);
  } else {
    std::cout << "raytrace" << std::endl;
    std::cout << "Usage: raytrace scenefile.lua" << std::endl << std::endl;
  }
  return 0;
}

Makefile

CC=clang++
CFLAGS=-g -Wall -pedantic -O0 -std=c++11

# Project configuration
SRCDIR=src
ODIR=build
LIBS=math render scene
SOURCES=math/ray.cpp math/vec3.cpp \
				render/bitmap.cpp \
				scene/camera.cpp scene/color.cpp scene/object.cpp scene/primitives.cpp \
				scene/scene.cpp \
				main.cpp
EXECUTABLE=raytrace

# Lua compilation headers
CFLAGS+=-I/usr/local/Cellar/lua51/5.1.5_4/include/lua-5.1/
# Luabind compilation headers
CFLAGS+=-I/usr/local/Cellar/luabind/0.9.1_1/include
CFLAGS+=-I/usr/local/Cellar/boost/1.60.0_2/include
# Lua library for linking stage
#LINKFLAGS=-llua-5.1 -lluabind
LINKFLAGS=-L/usr/local/Cellar/lua51/5.1.5_4/lib/
LINKFLAGS+=-L/usr/local/Cellar/luabind/0.9.1_1/lib/
LINKFLAGS+=-L/usr/local/Cellar/boost/1.60.0_2/lib/

LIBFLAGS=-llua5.1
LIBFLAGS+=-lluabind

# Sources with .cpp replaced with .o
OBJECTS=$(SOURCES:.cpp=.o)
# Library folders with the build dir prepended
OLIBDIR=$(addprefix $(ODIR)/, $(LIBS))

all: build $(addprefix $(ODIR)/, $(OBJECTS)) $(EXECUTABLE)

debug: CFLAGS += -DDEBUG
debug: all

$(EXECUTABLE): $(addprefix $(ODIR)/, $(OBJECTS))
	$(CC) $(LINKFLAGS) $(addprefix $(ODIR)/, $(OBJECTS)) -o $@ $(LIBFLAGS)

$(addprefix $(ODIR)/, %.o): $(SRCDIR)/%.cpp
	$(CC) $(addprefix -I$(SRCDIR)/, $(LIBS)) $(CFLAGS) -c $^ -o $@

build:
	mkdir $(ODIR)
	mkdir $(OLIBDIR)

.PHONY: clean
clean:
	rm -r $(ODIR)
	rm $(EXECUTABLE)