OpenSpace/modules/globebrowsing/globebrowsingmodule_lua.inl

/*****************************************************************************************
 *                                                                                       *
 * OpenSpace                                                                             *
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 * Copyright (c) 2014-2017                                                               *
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#include <modules/globebrowsing/globes/renderableglobe.h>

#include <modules/globebrowsing/rendering/layer/layermanager.h>
#include <modules/globebrowsing/rendering/layer/layer.h>

#include <openspace/engine/openspaceengine.h>
#include <openspace/engine/moduleengine.h>
#include <openspace/rendering/renderengine.h>
#include <openspace/rendering/renderable.h>
#include <openspace/scene/scene.h>
#include <openspace/scene/scenegraphnode.h>

namespace openspace::globebrowsing::luascriptfunctions {

/**
 *Adds a layer to the specified globe.
 */
int addLayer(lua_State* L) {
    using ghoul::lua::errorLocation;

    // Argument locations
    const int GlobeLocation = -3;
    const int LayerGroupLocation = -2;

    int nArguments = lua_gettop(L);
    if (nArguments != 3) {
        return luaL_error(L, "Expected %i arguments, got %i", 3, nArguments);
    }

    // String arguments
    const std::string GlobeName = luaL_checkstring(L, GlobeLocation);
    const std::string LayerGroupName = luaL_checkstring(L, LayerGroupLocation);

    // Get the node and make sure it exists
    SceneGraphNode* node = OsEng.renderEngine().scene()->sceneGraphNode(GlobeName);
    if (!node) {
        return luaL_error(L, ("Unknown globe name: " + GlobeName).c_str());
    }
  
    // Get the renderable globe
    RenderableGlobe* globe = dynamic_cast<RenderableGlobe*>(node->renderable());
    if (!globe) {
        return luaL_error(L, ("Renderable is not a globe: " + GlobeName).c_str());
    }
  
    // Get the layer group
    layergroupid::GroupID groupID = layergroupid::getGroupIDFromName(LayerGroupName);
    if (groupID == layergroupid::GroupID::Unknown) {
        return luaL_error(L, ("Unknown layer group: " + LayerGroupName).c_str());
    }

    // Get the dictionary defining the layer
    ghoul::Dictionary d;
    try {
        ghoul::lua::luaDictionaryFromState(L, d);
    }
    catch (const ghoul::lua::LuaFormatException& e) {
        LERRORC("addLayerFromDictionary", e.what());
        return 0;
    }

    globe->layerManager()->addLayer(groupID, d);
    
    return 0;
}

/**
 Deletes a layer from the specified globe.
 */
int deleteLayer(lua_State* L) {
    using ghoul::lua::errorLocation;

    // Argument locations
    const int GlobeLocation = -3;
    const int LayerGroupLocation = -2;
    const int NameLocation = -1;

    int nArguments = lua_gettop(L);
    if (nArguments != 3) {
        return luaL_error(L, "Expected %i arguments, got %i", 3, nArguments);
    }

    // String arguments
    const std::string GlobeName = luaL_checkstring(L, GlobeLocation);
    const std::string LayerGroupName = luaL_checkstring(L, LayerGroupLocation);
    const std::string LayerName = luaL_checkstring(L, NameLocation);

    // Get the node and make sure it exists
    SceneGraphNode* node = OsEng.renderEngine().scene()->sceneGraphNode(GlobeName);
    if (!node) {
        return luaL_error(L, ("Unknown globe name: " + GlobeName).c_str());
    }
  
    // Get the renderable globe
    RenderableGlobe* globe = dynamic_cast<RenderableGlobe*>(node->renderable());
    if (!globe) {
        return luaL_error(L, ("Renderable is not a globe: " + GlobeName).c_str());
    }
  
    // Get the layer group
    layergroupid::GroupID groupID = layergroupid::getGroupIDFromName(LayerGroupName);
    if (groupID == layergroupid::GroupID::Unknown) {
        return luaL_error(L, ("Unknown layer group: " + LayerGroupName).c_str());
    }

    globe->layerManager()->deleteLayer(groupID, LayerName);
    
    return 0;
}

int goToChunk(lua_State* L) {
    using ghoul::lua::luaTypeToString;

    // Check arguments
    int nArguments = lua_gettop(L);
    if (nArguments != 3) {
        return luaL_error(L, "Expected %i arguments, got %i", 3, nArguments);
    }

    int x = static_cast<int>(lua_tonumber(L, 1));
    int y = static_cast<int>(lua_tonumber(L, 2));
    int level = static_cast<int>(lua_tonumber(L, 3));

    OsEng.moduleEngine().module<GlobeBrowsingModule>()->goToChunk(x, y, level);

    return 0;
}

int goToGeo(lua_State* L) {
    using ghoul::lua::luaTypeToString;
    
    int nArguments = lua_gettop(L);
    if (nArguments != 2 && nArguments != 3) {
        return luaL_error(L, "Expected 2 or 3 arguments.");
    }
    
    double latitude = static_cast<int>(lua_tonumber(L, 1));
    double longitude = static_cast<int>(lua_tonumber(L, 2));

    if (nArguments == 2) {
        OsEng.moduleEngine().module<GlobeBrowsingModule>()->goToGeo(latitude, longitude);
    }
    else if (nArguments == 3) {
        double altitude = static_cast<int>(lua_tonumber(L, 3));
        OsEng.moduleEngine().module<GlobeBrowsingModule>()->goToGeo(latitude, longitude,
                                                                   altitude);
    }
    
    return 0;
}

} // namespace openspace::globebrowsing::luascriptfunctions