moved startFrame(), endFrame() and setCamera() into Engine

git-svn-id: svn://anubis/anaglym/trunk@39 99a6e188-d820-4881-8870-2d33a10e2619

ag.cc

@@ -27,6 +27,7 @@ namespace ag
             { "videoStop", videoStop },
             { "sleep", sleep },
             { "endFrame", endFrame },
+            { "setCamera", setCamera },
             { NULL, NULL }
         };
         luaL_register(L, "ag", functions);
@@ -171,10 +172,19 @@ namespace ag
         return 0;
     }
 
+    int startFrame(lua_State * L)
+    {
+        return g_engine->startFrame(L);
+    }
+
     int endFrame(lua_State * L)
     {
-        SDL_GL_SwapBuffers();
+        return g_engine->endFrame(L);
-        return 0;
+    }
+
+    int setCamera(lua_State * L)
+    {
+        return g_engine->setCamera(L);
     }
 
     namespace object

ag.h

@@ -13,7 +13,9 @@ namespace ag
     int videoStart(lua_State * L);
     int videoStop(lua_State * L);
     int sleep(lua_State * L);
+    int startFrame(lua_State * L);
     int endFrame(lua_State * L);
+    int setCamera(lua_State * L);
 
     namespace object
     {

anaglym.cc

@@ -9,6 +9,8 @@
 #include <unistd.h>
 #include <iostream>
 #include <string>
+#include <GL/gl.h>
+#include <GL/glu.h>
 using namespace std;
 
 static void usage();
@@ -61,6 +63,15 @@ Engine::Engine()
 {
     m_video = new Video();
     m_next_object_index = 1;
+    m_eye[0] = 0;
+    m_eye[1] = -1;
+    m_eye[2] = 0;
+    m_center[0] = 0;
+    m_center[1] = 0;
+    m_center[2] = 0;
+    m_up[0] = 0;
+    m_up[1] = 0;
+    m_up[2] = 1;
 }
 
 Engine::~Engine()
@@ -167,6 +178,28 @@ Engine::Object * Engine::getObject(int id)
     return m_objects.find(id) != m_objects.end() ? m_objects[id] : NULL;
 }
 
+int Engine::startFrame(lua_State * L)
+{
+    glMatrixMode(GL_MODELVIEW);
+    glLoadIdentity();
+    gluLookAt(m_eye[0], m_eye[1], m_eye[2],
+              m_center[0], m_center[1], m_center[2],
+              m_up[0], m_up[1], m_up[2]);
+    return 0;
+}
+
+int Engine::endFrame(lua_State * L)
+{
+    SDL_GL_SwapBuffers();
+    return 0;
+}
+
+int Engine::setCamera(lua_State * L)
+{
+    int argc = lua_gettop(L);
+    return 0;
+}
+
 void Engine::run()
 {
 }

anaglym.h

@@ -38,6 +38,11 @@ class Engine
         int addObject(WFObj * obj);
         Object * getObject(int id);
 
+        /* lua services */
+        int startFrame(lua_State * L);
+        int endFrame(lua_State * L);
+        int setCamera(lua_State * L);
+
     protected:
         void registerLibraries();
         bool fileExists(const std::string & path);
@@ -48,6 +53,9 @@ class Engine
         OdeWorld    m_world;
         std::map<int, Object *> m_objects;
         int         m_next_object_index;
+        GLdouble    m_eye[3];
+        GLdouble    m_center[3];
+        GLdouble    m_up[3];
 };
 
 extern Engine * g_engine;