/// <summary>
/// Initializes a new instance of the <see cref="MultimediaJoystick"/> class.
/// </summary>
/// <param name="owner">The input factory that owns this device.</param>
/// <param name="joystickID">The ID of the joystick.</param>
/// <param name="name">The name of the joystick.</param>
/// <exception cref="System.ArgumentNullException">Thrown when the owner parameter is NULL (or Nothing in VB.NET).</exception>
internal MultimediaJoystick(GorgonInputFactory owner, int joystickID, string name)
: base(owner, name)
{
AllowExclusiveMode = false;
_joystickID = joystickID;
Gorgon.Log.Print("Windows multimedia joystick device ID 0x{0} interface created.", LoggingLevel.Verbose, joystickID.FormatHex());
}
/// <summary>
/// Initializes a new instance of the <see cref="ContentPanel"/> class.
/// </summary>
/// <param name="content">The content.</param>
/// <param name="input">Input interface to use.</param>
public ContentPanel(ContentObject content, GorgonInputFactory input = null)
: this()
{
if (content == null)
{
throw new ArgumentNullException("content");
}
Content = content;
UpdateCaption();
RawInput = input;
}
/// <summary>
/// Function to return the raw input object from the editor.
/// </summary>
/// <returns>The raw input interface from the editor.</returns>
protected GorgonInputFactory GetRawInput()
{
if (_input != null)
{
return(_input);
}
if (!Gorgon.PlugIns.Contains(GorgonRawInputTypeName))
{
return(null);
}
_input = GorgonInputFactory.CreateInputFactory(GorgonRawInputTypeName);
return(_input);
}
/// <summary>
/// Initializes a new instance of the <see cref="XInputController"/> class.
/// </summary>
/// <param name="owner">The input factory that owns this device.</param>
/// <param name="joystickID">The ID of the joystick.</param>
/// <param name="name">The name of the joystick.</param>
/// <param name="controller">Controller instance to bind to this joystick.</param>
internal XInputController(GorgonInputFactory owner, int joystickID, string name, XI.Controller controller)
: base(owner, name)
{
AllowExclusiveMode = false;
_controller = controller;
_controllerID = joystickID;
if (controller.IsConnected)
{
IsConnected = true;
#if DEBUG
XI.Capabilities caps = controller.GetCapabilities(XI.DeviceQueryType.Any);
Gorgon.Log.Print("XInput XBOX 360 controller device {0} interface created (ID:{1}).", LoggingLevel.Simple, caps.SubType.ToString(), joystickID);
#endif
}
else
{
Gorgon.Log.Print("Disconnected XInput XBOX 360 controller device #{0} interface created.", LoggingLevel.Simple, joystickID);
IsConnected = false;
}
}
/// <summary>
/// Function to initialize the application.
/// </summary>
private static void Initialize()
{
_form = new FormMain();
_graphics = new GorgonGraphics();
_swapChain = _graphics.Output.CreateSwapChain("Swap",
new GorgonSwapChainSettings
{
Window = _form,
IsWindowed = true,
DepthStencilFormat = BufferFormat.D24_UIntNormal_S8_UInt,
Format = BufferFormat.R8G8B8A8_UIntNormal
});
_renderer2D = _graphics.Output.Create2DRenderer(_swapChain);
_font = _graphics.Fonts.CreateFont("AppFont",
new GorgonFontSettings
{
FontFamilyName = "Calibri",
FontStyle = FontStyle.Bold,
FontHeightMode = FontHeightMode.Pixels,
AntiAliasingMode = FontAntiAliasMode.AntiAlias,
OutlineSize = 1,
OutlineColor1 = Color.Black,
Size = 16.0f
});
_vertexShader = _graphics.Shaders.CreateShader <GorgonVertexShader>("VertexShader", "PrimVS", Resources.Shaders);
_pixelShader = _graphics.Shaders.CreateShader <GorgonPixelShader>("PixelShader", "PrimPS", Resources.Shaders);
_bumpShader = _graphics.Shaders.CreateShader <GorgonPixelShader>("PixelShader", "PrimPSBump", Resources.Shaders);
_waterShader = _graphics.Shaders.CreateShader <GorgonPixelShader>("PixelShader", "PrimPSWaterBump", Resources.Shaders);
_normalVertexShader = _graphics.Shaders.CreateShader <GorgonVertexShader>("NormalVertexShader", "NormalVS", Resources.Shaders);
_normalPixelShader = _graphics.Shaders.CreateShader <GorgonPixelShader>("NormalPixelShader", "NormalPS", Resources.Shaders);
_vertexLayout = _graphics.Input.CreateInputLayout("Vertex3D", typeof(Vertex3D), _vertexShader);
_normalVertexLayout = _graphics.Input.CreateInputLayout("NormalVertex",
new[]
{
new GorgonInputElement("SV_POSITION",
BufferFormat.R32G32B32A32_Float,
0,
0,
0,
false,
0),
},
_normalVertexShader);
_graphics.Shaders.VertexShader.Current = _vertexShader;
_graphics.Shaders.PixelShader.Current = _pixelShader;
_graphics.Input.Layout = _vertexLayout;
_graphics.Input.PrimitiveType = PrimitiveType.TriangleList;
_texture = _graphics.Textures.CreateTexture <GorgonTexture2D>("UVTexture", Resources.UV);
_earf = _graphics.Textures.CreateTexture <GorgonTexture2D>("Earf", Resources.earthmap1k);
_normalMap = _graphics.Textures.FromMemory <GorgonTexture2D>("RainNRM", Resources.Rain_Height_NRM, new GorgonCodecDDS());
_normalEarfMap = _graphics.Textures.FromMemory <GorgonTexture2D>("EarfNRM", Resources.earthbump1k_NRM, new GorgonCodecDDS());
_specMap = _graphics.Textures.FromMemory <GorgonTexture2D>("RainSPC", Resources.Rain_Height_SPEC, new GorgonCodecDDS());
_specEarfMap = _graphics.Textures.CreateTexture <GorgonTexture2D>("EarfSPC", Resources.earthspec1k);
_cloudMap = _graphics.Textures.CreateTexture <GorgonTexture2D>("EarfClouds", Resources.earthcloudmap);
_gorgNrm = _graphics.Textures.CreateTexture <GorgonTexture2D>("EarfClouds", Resources.normalmap);
var depth = new GorgonDepthStencilStates
{
DepthComparison = ComparisonOperator.LessEqual,
IsDepthEnabled = true,
IsDepthWriteEnabled = true
};
_graphics.Output.DepthStencilState.States = depth;
_graphics.Output.SetRenderTarget(_swapChain, _swapChain.DepthStencilBuffer);
_graphics.Rasterizer.States = GorgonRasterizerStates.CullBackFace;
_graphics.Rasterizer.SetViewport(new GorgonViewport(0, 0, _form.ClientSize.Width, _form.ClientSize.Height, 0, 1.0f));
_graphics.Shaders.PixelShader.TextureSamplers[0] = GorgonTextureSamplerStates.LinearFilter;
_wvp = new WorldViewProjection(_graphics);
_wvp.UpdateProjection(75.0f, _form.ClientSize.Width, _form.ClientSize.Height);
// When we resize, update the projection and viewport to match our client size.
_form.Resize += (sender, args) =>
{
_graphics.Rasterizer.SetViewport(new GorgonViewport(0, 0, _form.ClientSize.Width, _form.ClientSize.Height, 0, 1.0f));
_wvp.UpdateProjection(75.0f, _form.ClientSize.Width, _form.ClientSize.Height);
};
var fnU = new Vector3(0.5f, 1.0f, 0);
var fnV = new Vector3(1.0f, 1.0f, 0);
Vector3 faceNormal;
Vector3.Cross(ref fnU, ref fnV, out faceNormal);
faceNormal.Normalize();
_triangle = new Triangle(_graphics, new Vertex3D
{
Position = new Vector4(-12.5f, -1.5f, 12.5f, 1),
Normal = faceNormal,
UV = new Vector2(0, 1.0f)
}, new Vertex3D
{
Position = new Vector4(0, 24.5f, 12.5f, 1),
Normal = faceNormal,
UV = new Vector2(0.5f, 0.0f)
}, new Vertex3D
{
Position = new Vector4(12.5f, -1.5f, 12.5f, 1),
Normal = faceNormal,
UV = new Vector2(1.0f, 1.0f)
})
{
Texture = _texture,
Position = new Vector3(0, 0, 1.0f)
};
_plane = new Plane(_graphics, new Vector2(25.0f, 25.0f), new RectangleF(0, 0, 1.0f, 1.0f), new Vector3(90, 0, 0), 32, 32)
{
Position = new Vector3(0, -1.5f, 1.0f),
Texture = _texture
};
_cube = new Cube(_graphics, new Vector3(1, 1, 1), new RectangleF(0, 0, 1.0f, 1.0f), new Vector3(45.0f, 0, 0), 1, 1)
{
Position = new Vector3(0, 0, 1.5f),
Texture = _texture
};
_sphere = new Sphere(_graphics, 1.0f, new RectangleF(0.0f, 0.0f, 1.0f, 1.0f), Vector3.Zero, 64, 64)
{
Position = new Vector3(-2.0f, 1.0f, 0.75f),
Texture = _earf
};
_clouds = new Sphere(_graphics, 5.175f, new RectangleF(0.0f, 0.0f, 1.0f, 1.0f), Vector3.Zero, 16, 16)
{
Position = new Vector3(10, 2, 9.5f),
Texture = _cloudMap
};
_icoSphere = new IcoSphere(_graphics, 5.0f, new RectangleF(0, 0, 1, 1), Vector3.Zero, 3)
{
Rotation = new Vector3(0, -45.0f, 0),
Position = new Vector3(10, 2, 9.5f),
Texture = _earf
};
_graphics.Shaders.PixelShader.TextureSamplers[0] = new GorgonTextureSamplerStates
{
TextureFilter = TextureFilter.Linear,
HorizontalAddressing = TextureAddressing.Wrap,
VerticalAddressing = TextureAddressing.Wrap,
DepthAddressing = TextureAddressing.Wrap,
ComparisonFunction = ComparisonOperator.Always
};
_graphics.Shaders.PixelShader.TextureSamplers[2] = new GorgonTextureSamplerStates
{
TextureFilter = TextureFilter.Linear,
HorizontalAddressing = TextureAddressing.Wrap,
VerticalAddressing = TextureAddressing.Wrap,
DepthAddressing = TextureAddressing.Wrap,
ComparisonFunction = ComparisonOperator.Always
};
_graphics.Shaders.PixelShader.TextureSamplers[1] = new GorgonTextureSamplerStates
{
TextureFilter = TextureFilter.Linear,
HorizontalAddressing = TextureAddressing.Wrap,
VerticalAddressing = TextureAddressing.Wrap,
DepthAddressing = TextureAddressing.Wrap,
ComparisonFunction = ComparisonOperator.Always
};
_material = new Material
{
UVOffset = Vector2.Zero,
SpecularPower = 1.0f
};
_materialBuffer = _graphics.Buffers.CreateConstantBuffer("uvOffset", ref _material, BufferUsage.Default);
_graphics.Shaders.PixelShader.ConstantBuffers[2] = _materialBuffer;
_light = new Light(_graphics);
var lightPosition = new Vector3(1.0f, 1.0f, -1.0f);
_light.UpdateLightPosition(ref lightPosition, 0);
GorgonColor color = GorgonColor.White;
_light.UpdateSpecular(ref color, 256.0f, 0);
lightPosition = new Vector3(-5.0f, 5.0f, 8.0f);
_light.UpdateLightPosition(ref lightPosition, 1);
color = Color.Yellow;
_light.UpdateColor(ref color, 1);
_light.UpdateSpecular(ref color, 2048.0f, 1);
_light.UpdateAttenuation(10.0f, 1);
lightPosition = new Vector3(5.0f, 3.0f, 10.0f);
_light.UpdateLightPosition(ref lightPosition, 2);
color = Color.Red;
_light.UpdateColor(ref color, 2);
_light.UpdateAttenuation(16.0f, 2);
var eye = Vector3.Zero;
var lookAt = Vector3.UnitZ;
var up = Vector3.UnitY;
_wvp.UpdateViewMatrix(ref eye, ref lookAt, ref up);
_cameraRotation = Vector2.Zero;
Gorgon.PlugIns.LoadPlugInAssembly(Application.StartupPath + @"\Gorgon.Input.Raw.dll");
_input = GorgonInputFactory.CreateInputFactory("GorgonLibrary.Input.GorgonRawPlugIn");
_keyboard = _input.CreateKeyboard(_form);
_mouse = _input.CreatePointingDevice(_form);
_keyboard.KeyDown += (sender, args) =>
{
if (args.Key == KeyboardKeys.L)
{
_lock = !_lock;
}
};
_mouse.PointingDeviceDown += Mouse_Down;
_mouse.PointingDeviceUp += Mouse_Up;
_mouse.PointingDeviceWheelMove += (sender, args) =>
{
if (args.WheelDelta < 0)
{
_sensitivity -= 0.05f;
if (_sensitivity < 0.05f)
{
_sensitivity = 0.05f;
}
}
else if (args.WheelDelta > 0)
{
_sensitivity += 0.05f;
if (_sensitivity > 2.0f)
{
_sensitivity = 2.0f;
}
}
};
_mouse.PointingDeviceMove += (sender, args) =>
{
if (!_mouse.Exclusive)
{
return;
}
var delta = args.RelativePosition;
_cameraRotation.Y += delta.Y * _sensitivity; //((360.0f * 0.002f) * delta.Y.Sign());
_cameraRotation.X += delta.X * _sensitivity; //((360.0f * 0.002f) * delta.X.Sign());
_mouseStart = _mouse.Position;
_mouse.RelativePosition = PointF.Empty;
};
}
/// <summary>
/// Raises the <see cref="E:System.Windows.Forms.Form.Load" /> event.
/// </summary>
/// <param name="e">An <see cref="T:System.EventArgs" /> that contains the event data.</param>
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
try
{
// Set our default cursor.
_currentCursor = Resources.hand_icon;
// Load our raw input plug-in assembly.
Gorgon.PlugIns.LoadPlugInAssembly(Program.PlugInPath + "Gorgon.Input.Raw.DLL");
// Create our input factory.
_factory = GorgonInputFactory.CreateInputFactory("GorgonLibrary.Input.GorgonRawPlugIn");
// Get our device info.
// This function is called when the factory is created.
// However, I'm calling it here just to show that it exists.
_factory.EnumerateDevices();
// Validate, even though it's highly unlikely we'll run into these.
if (_factory.PointingDevices.Count == 0)
{
GorgonDialogs.ErrorBox(this, "There were no mice detected on this computer. The application requires a mouse.");
Gorgon.Quit();
}
if (_factory.KeyboardDevices.Count == 0)
{
GorgonDialogs.ErrorBox(this, "There were no keyboards detected on this computer. The application requires a keyboard.");
Gorgon.Quit();
}
// Get our input devices.
CreateMouse();
CreateKeyboard();
CreateJoystick();
// When the display area changes size, update the spray effect
// and limit the mouse.
panelDisplay.Resize += panelDisplay_Resize;
// Set the initial range of the mouse cursor.
_mouse.PositionRange = Rectangle.Round(panelDisplay.ClientRectangle);
// Set up our spray object.
_spray = new Spray(panelDisplay.ClientSize);
_cursor = new MouseCursor(panelDisplay)
{
Hotspot = new Point(-16, -3)
};
// Set up our idle method.
Gorgon.ApplicationIdleLoopMethod = Idle;
}
catch (Exception ex)
{
// We do this here instead of just calling the dialog because this
// function will send the exception to the Gorgon log file.
GorgonException.Catch(ex, () => GorgonDialogs.ErrorBox(this, ex));
Gorgon.Quit();
}
}
/// <summary>
/// Raises the <see cref="E:System.Windows.Forms.Form.Load" /> event.
/// </summary>
/// <param name="e">An <see cref="T:System.EventArgs" /> that contains the event data.</param>
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
try
{
// Load the XInput plug-in assembly.
Gorgon.PlugIns.LoadPlugInAssembly(Program.PlugInPath + "Gorgon.Input.XInput.dll");
// Create our factory.
_factory = GorgonInputFactory.CreateInputFactory("GorgonLibrary.Input.GorgonXInputPlugIn");
// Ensure that we have and XBox controller to work with.
if (_factory.JoystickDevices.Count == 0)
{
GorgonDialogs.ErrorBox(this, "No XBox controllers were found on this system.\nThis example requires an XBox controller.");
Gorgon.Quit();
return;
}
// Enumerate the active joysticks. We'll only take 3 of the 4 available xbox controllers.
_joystick = new GorgonJoystick[3];
_stickPosition = new PointF[_joystick.Count];
_sprayStates = new SprayCan[_joystick.Count];
for (int i = 0; i < _joystick.Count; i++)
{
var joystick = _factory.CreateJoystick(this, _factory.JoystickDevices[i].Name);
// Set a dead zone on the joystick.
// A dead zone will stop input from the joystick until it reaches the outside
// of the specified coordinates.
joystick.DeadZone.X = new GorgonRange(joystick.Capabilities.XAxisRange.Minimum / 4, joystick.Capabilities.XAxisRange.Maximum / 4);
joystick.DeadZone.Y = new GorgonRange(joystick.Capabilities.YAxisRange.Minimum / 4, joystick.Capabilities.YAxisRange.Maximum / 4);
joystick.DeadZone.SecondaryX = new GorgonRange(joystick.Capabilities.XAxisRange.Minimum / 128, joystick.Capabilities.XAxisRange.Maximum / 128);
joystick.DeadZone.SecondaryY = new GorgonRange(joystick.Capabilities.YAxisRange.Minimum / 128, joystick.Capabilities.YAxisRange.Maximum / 128);
_joystick[i] = joystick;
// Start at a random spot.
_stickPosition[i] = new Point(GorgonRandom.RandomInt32(64, panelDisplay.ClientSize.Width - 64), GorgonRandom.RandomInt32(64, panelDisplay.ClientSize.Height - 64));
// Turn off spray for all controllers.
_sprayStates[i] = new SprayCan(joystick, i);
}
// Check for connected controllers.
while (!_joystick.Any(item => item.IsConnected))
{
if (MessageBox.Show(this,
"There are no XBox controllers connected.\nPlease plug in an XBox controller and click OK.",
"No Controllers", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) != DialogResult.Cancel)
{
continue;
}
Gorgon.Quit();
return;
}
// Get the graphics interface for our panel.
_surface = new DrawingSurface(panelDisplay);
// Set up our idle loop.
Gorgon.ApplicationIdleLoopMethod += Idle;
}
catch (Exception ex)
{
// We do this here instead of just calling the dialog because this
// function will send the exception to the Gorgon log file.
GorgonException.Catch(ex, () => GorgonDialogs.ErrorBox(this, ex));
Gorgon.Quit();
}
}
/// <summary>
/// Initializes a new instance of the <see cref="WinFormsPointingDevice"/> class.
/// </summary>
/// <param name="owner">The control that owns this device.</param>
/// <exception cref="System.ArgumentNullException">Thrown when the owner parameter is NULL (or Nothing in VB.NET).</exception>
internal WinFormsPointingDevice(GorgonInputFactory owner)
: base(owner, "Win Forms Mouse")
{
AllowExclusiveMode = false;
Gorgon.Log.Print("Windows forms input pointing device interface created.", LoggingLevel.Verbose);
}
/// <summary>
/// Raises the <see cref="E:System.Windows.Forms.Form.Load"></see> event.
/// </summary>
/// <param name="e">An <see cref="T:System.EventArgs"></see> that contains the event data.</param>
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
try
{
// Load the plug-in assembly.
Gorgon.PlugIns.LoadPlugInAssembly(Program.PlugInPath + "Gorgon.Input.Raw.DLL");
// Create the factory.
_input = GorgonInputFactory.CreateInputFactory("GorgonLibrary.Input.GorgonRawPlugIn");
// Create mouse, keyboard and joystick interfaces.
_keyboard = _input.CreateKeyboard(this);
_mouse = _input.CreatePointingDevice(this);
_joystickList = new GorgonJoystick[_input.JoystickDevices.Count];
// Create each joystick interface.
for (int i = 0; i < _joystickList.Length; i++)
{
_joystickList[i] = _input.CreateJoystick(this, _input.JoystickDevices[i].Name);
}
// Create the graphics interface.
_graphics = new GorgonGraphics();
_screen = _graphics.Output.CreateSwapChain("Screen", new GorgonSwapChainSettings
{
Size = Settings.Default.Resolution,
Format = BufferFormat.R8G8B8A8_UIntNormal,
IsWindowed = Settings.Default.IsWindowed
});
// For the backup image. Used to make it as large as the monitor that we're on.
Screen currentScreen = Screen.FromHandle(Handle);
// Relocate the window to the center of the screen.
Location = new Point(currentScreen.Bounds.Left + (currentScreen.WorkingArea.Width / 2) - ClientSize.Width / 2,
currentScreen.Bounds.Top + (currentScreen.WorkingArea.Height / 2) - ClientSize.Height / 2);
// Create the 2D renderer.
_2D = _graphics.Output.Create2DRenderer(_screen);
// Create the text font.
_font = _graphics.Fonts.CreateFont("Arial_9pt", new GorgonFontSettings
{
FontFamilyName = "Arial",
FontStyle = FontStyle.Bold,
AntiAliasingMode = FontAntiAliasMode.AntiAlias,
FontHeightMode = FontHeightMode.Points,
Size = 9.0f
});
// Enable the mouse.
Cursor = Cursors.Cross;
_mouse.Enabled = true;
_mouse.Exclusive = false;
_mouse.PointingDeviceDown += MouseInput;
_mouse.PointingDeviceMove += MouseInput;
_mouse.PointingDeviceWheelMove += _mouse_PointingDeviceWheelMove;
// Enable the keyboard.
_keyboard.Enabled = true;
_keyboard.Exclusive = false;
_keyboard.KeyDown += _keyboard_KeyDown;
// Create text sprite.
_messageSprite = _2D.Renderables.CreateText("Message", _font, "Using mouse and keyboard.");
_messageSprite.Color = Color.Black;
// Create a back buffer.
_backBuffer = _graphics.Output.CreateRenderTarget("BackBuffer", new GorgonRenderTarget2DSettings
{
Width = _screen.Settings.Width,
Height = _screen.Settings.Height,
Format = BufferFormat.R8G8B8A8_UIntNormal
});
_backBuffer.Clear(Color.White);
var settings = new GorgonTexture2DSettings
{
Width = currentScreen.Bounds.Width,
Height = currentScreen.Bounds.Height,
Format = BufferFormat.R8G8B8A8_UIntNormal,
Usage = BufferUsage.Staging
};
// Clear our backup image to white to match our primary screen.
_backupImage = _graphics.Textures.CreateTexture("Backup", settings);
using (var textureData = _backupImage.Lock(BufferLockFlags.Write))
{
textureData.Data.Fill(0xFF);
}
// Set the mouse range and position.
Cursor.Position = PointToScreen(new Point(Settings.Default.Resolution.Width / 2, Settings.Default.Resolution.Height / 2));
_mouse.SetPosition(Settings.Default.Resolution.Width / 2, Settings.Default.Resolution.Height / 2);
_mouse.SetPositionRange(0, 0, Settings.Default.Resolution.Width, Settings.Default.Resolution.Height);
// Set gorgon events.
_screen.AfterStateTransition += (sender, args) =>
{
OnResizeEnd(EventArgs.Empty);
// Reposition after a state change.
if (!args.IsWindowed)
{
return;
}
Screen monitor = Screen.FromHandle(Handle);
Location = new Point(monitor.Bounds.Left + (monitor.WorkingArea.Width / 2) - args.Width / 2,
monitor.Bounds.Top + (monitor.WorkingArea.Height / 2) - args.Height / 2);
Cursor.Position = PointToScreen(Point.Round(_mouse.Position));
};
Gorgon.ApplicationIdleLoopMethod = Gorgon_Idle;
}
catch (Exception ex)
{
GorgonException.Catch(ex, () => GorgonDialogs.ErrorBox(this, ex));
Gorgon.Quit();
}
}
/// <summary>
/// Initializes a new instance of the <see cref="WinFormsKeyboard"/> class.
/// </summary>
/// <param name="owner">The control that owns this device.</param>
/// <exception cref="System.ArgumentNullException">Thrown when the owner parameter is NULL (or Nothing in VB.NET).</exception>
internal WinFormsKeyboard(GorgonInputFactory owner)
: base(owner, "Win Forms Input Keyboard")
{
AllowExclusiveMode = false;
Gorgon.Log.Print("Win Forms input keyboard interface created.", LoggingLevel.Verbose);
}
/// <summary>
/// Function to load in the input plug-ins.
/// </summary>
/// <returns>A list of input plug-ins.</returns>
static IList <Tuple <GorgonInputPlugIn, GorgonInputFactory> > GetInputPlugIns()
{
IList <Tuple <GorgonInputPlugIn, GorgonInputFactory> > result = new Tuple <GorgonInputPlugIn, GorgonInputFactory>[] { }; // A list of input factories and the plug-ins that created them.
// Get the files from the plug-in directory.
// The plug-in directory can be changed in the configuration file
// to point at wherever you'd like. If a {0} place holder is
// in the path, it will be replaced with whatever the build
// configuration is set to (i.e. DEBUG or RELEASE).
var files = Directory.GetFiles(PlugInPath, "*.dll");
if (files.Length == 0)
{
return(result);
}
// Find our plug-ins in the DLLs.
foreach (var file in files)
{
// Get the assembly name.
// This is the preferred method of loading a plug-in assembly.
// It keeps us from going into DLL hell because it'll contain
// version information, public key info, etc...
// We wrap this in this exception handler because if a DLL is
// a native DLL, then it'll throw an exception. And since
// we can't load native DLLs as our plug-in, then we should
// skip it.
AssemblyName name;
try
{
name = AssemblyName.GetAssemblyName(file);
}
catch (BadImageFormatException)
{
// This happens if we try and load a DLL that's not a .NET assembly.
continue;
}
// Skip any assemblies that aren't a plug-in assembly.
if (!Gorgon.PlugIns.IsPlugInAssembly(name))
{
continue;
}
// Load the assembly DLL.
// This will not only load the assembly DLL into the application
// domain (if it's not already loaded), but will also enumerate
// the plug-in types. If there are none, an exception will be
// thrown. This is why we do a check with IsPlugInAssembly before
// we load the assembly.
Gorgon.PlugIns.LoadPlugInAssembly(name);
// Now try to retrieve our input plug-ins.
// Retrieve the list of plug-ins from the assembly. Once we have
// the list we look for any plug-ins that are GorgonInputPlugIn
// types and retrieve their type information.
var inputPlugIns = Gorgon.PlugIns.EnumeratePlugIns(name)
.Where(item => item is GorgonInputPlugIn)
.Select(item => item.GetType()).ToArray();
// If we have input plug-ins, and we haven't initialized our list, then do so now.
if ((result.Count == 0) && (inputPlugIns.Length > 0))
{
result = new List <Tuple <GorgonInputPlugIn, GorgonInputFactory> >();
}
// Add each input factory and plug-in to our list.
foreach (var inputPlugIn in inputPlugIns)
{
// Here we actually create the input factory from the plug-in
// by passing the input plug-in type.
var factory = GorgonInputFactory.CreateInputFactory(inputPlugIn);
if (factory != null)
{
result.Add(new Tuple <GorgonInputPlugIn, GorgonInputFactory>(
(GorgonInputPlugIn)Gorgon.PlugIns[inputPlugIn.FullName],
factory));
}
}
}
return(result);
}