iCAx开思网

标题: rhino犀牛的二次开发sdk程序代码 [打印本页]

作者: johnsunjiang 时间: 2006-3-9 14:48
标题: rhino犀牛的二次开发sdk程序代码
大家有空一起讨论讨论
以下代码是简单的添加新层的功能：
CRhinoCommand::result CCommandAddNewLayer::RunCommand(
      const CRhinoCommandContext& context
      )
  {
CRhinoLayerTable& layer_table = context.m_doc.m_layer_table;
ON_wString unused_name;
layer_table.GetUnusedLayerName( unused_name );

//提示输入层名
CRhinoGetString gs;
gs.SetCommandPrompt( L"Name of layer to add" );
gs.SetDefaultString( unused_name );
gs.AcceptNothing( TRUE );
gs.GetString();
if( gs.CommandResult() != CRhinoCommand::success )
   return gs.CommandResult();

// 判断层名是否已输入
ON_wString layer_name = gs.String();
layer_name.TrimLeftAndRight();
if( layer_name.IsEmpty() )
{
   RhinoApp().Print( L"Layer name cannot be blank.\n" );
   return CRhinoCommand::cancel;
}

// 判断层名是否有效
if( !RhinoIsValidName(layer_name) )
{
   RhinoApp().Print( L"\"%s\" is not a valid layer name.\n", layer_name );
   return CRhinoCommand::cancel;
}

// 判断新加的层名是否已经存在
int layer_index = layer_table.FindLayer( layer_name );
if( layer_index >= 0 )
{
   RhinoApp().Print( L"A layer with the name \"%s\" already exists.\n", layer_name );
   return CRhinoCommand::cancel;
}

// 创建新层
ON_Layer layer;
layer.SetLayerName( layer_name );

// 添加层
layer_index = layer_table.AddLayer( layer );
if( layer_index < 0 )
{
   RhinoApp().Print( L"Unable to add \"%s\" layer.\n", layer_name );
   return CRhinoCommand::failure;
}

return CRhinoCommand::success;
  }

欢迎光临 iCAx开思网 (https://www.icax.org/)