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Added Node:getNumParents() and Node:getParent(index) support

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git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14380 16af8721-9629-0410-8352-f15c8da7e697
This commit is contained in:
Robert Osfield 2014-07-23 10:49:27 +00:00
parent 7dc3b34bfd
commit 5130361d65
1 changed files with 64 additions and 0 deletions
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64
src/osgPlugins/lua/LuaScriptEngine.cpp
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@ -1605,6 +1605,62 @@ static int callImageSet(lua_State* _lua)
return 0;
}
//////////////////////////////////////////////////////////////////////////////////////
//
// Node Parent
//
static int callGetParent(lua_State* _lua)
{
const LuaScriptEngine* lse = reinterpret_cast<const LuaScriptEngine*>(lua_topointer(_lua, lua_upvalueindex(1)));
int n = lua_gettop(_lua); /* number of arguments */
if (n<1 || lua_type(_lua, 1)!=LUA_TTABLE) return 0;
osg::Node* node = lse->getObjectFromTable<osg::Node>(1);
if (!node)
{
OSG_NOTICE<<"Warning: Node::getParent() can only be called on a Node"<<std::endl;
return 0;
}
int index = 0;
if (n>=2 && lua_isnumber(_lua, 2))
{
index = static_cast<int>(lua_tonumber(_lua, 2));
if (index>=0 && index<static_cast<int>(node->getNumParents()))
{
lse->pushObject(node->getParent(0));
return 1;
}
else
{
OSG_NOTICE<<"Warning: Call to node:getParent(index) has an out of range index."<<std::endl;
return 0;
}
}
else
{
OSG_NOTICE<<"Warning: node:getParent() requires a integer parameter."<<std::endl;
return 0;
}
}
static int callGetNumParents(lua_State* _lua)
{
const LuaScriptEngine* lse = reinterpret_cast<const LuaScriptEngine*>(lua_topointer(_lua, lua_upvalueindex(1)));
int n = lua_gettop(_lua); /* number of arguments */
if (n<1 || lua_type(_lua, 1)!=LUA_TTABLE) return 0;
osg::Node* node = lse->getObjectFromTable<osg::Node>(1);
if (!node)
{
OSG_NOTICE<<"Warning: Node::getNumParents() can only be called on a Node"<<std::endl;
return 0;
}
lua_pushnumber(_lua, node->getNumParents());
return 1;
}
//////////////////////////////////////////////////////////////////////////////////////
//
// Method calling support
@ -4182,6 +4238,14 @@ void LuaScriptEngine::pushObject(osg::Object* object) const
luaL_getmetatable(_lua, "LuaScriptEngine.Object");
lua_setmetatable(_lua, -2);
}
else if (dynamic_cast<osg::Node*>(object)!=0)
{
assignClosure("getParent", callGetParent);
assignClosure("getNumParents", callGetNumParents);
luaL_getmetatable(_lua, "LuaScriptEngine.Object");
lua_setmetatable(_lua, -2);
}
else
{
luaL_getmetatable(_lua, "LuaScriptEngine.Object");