using Delta.ContentSystem.Rendering;

using Delta.ContentSystem.Rendering.Helpers;

using Delta.Engine;

using Delta.InputSystem;

using Delta.Rendering.Basics.Drawing;

using Delta.Rendering.Basics.Fonts;

using Delta.Rendering.Cameras;

using Delta.Rendering.Effects;

using Delta.Rendering.Effects.Modifiers;

using Delta.Rendering.Enums;

using Delta.Rendering.Models;

using Delta.Utilities.Datatypes;

using Delta.Utilities.Helpers;

using Delta.Utilities.Math;

using NUnit.Framework;



namespace Delta.Rendering.EffectTests

{

	/// <summary>

	/// Effect test in 3D space.

	/// </summary>

	[Category("Visual")]

	internal class Effect3DTests

	{

		#region Helpers

		/// <summary>

		/// The default 3d material modifier, so we don't have to write the code

		/// in every test again.

		/// </summary>

		public static readonly MaterialModifier Default3DMaterialModifier =

			new MaterialModifier

			{

				Material = new MaterialColored("DeltaEngineLogo")

				{

					DrawLayer = RenderLayer.Normal,

					BlendColor = Color.White,

				},

				BillboardMode = BillboardMode.CameraFacingPrecise,

			};

		#endregion



		#region SimpleEffect3D (Static)

		/// <summary>

		/// Spawn simple effect

		/// </summary>

		[Test]

		public static void SimpleEffect3D()

		{

			// Create a default camera.

			LookAtCamera cam = new LookAtCamera(new Vector(1, -5, 3));



			// Create a new template.

			EffectData data = EffectData.Get("<SimpleEffect3D>");

			// Add one emitter and some modifiers.

			EmitterData emitter = new EmitterData();

			emitter.Modifiers.Add(new AlwaysSpawnModifier());

			emitter.Modifiers.Add(Default3DMaterialModifier);

			emitter.Modifiers.Add(new RotationModifier

			{

				Rotation = new Range(0.0f, 360.0f),

			});

			emitter.Modifiers.Add(new VelocityModifier

			{

				Velocity = new Vector(0f, 0f, 1f)

			});

			emitter.Modifiers.Add(new SizeModifier

			{

				WidthRange = new Range(0.2f, 4f),

				HeightRange = new Range(0.1f, 2f),

			});

			data.Emitters.Add(emitter);

			// Spawn the effect.

			int effectId = Effect.Spawn(data, Vector.Zero);



			// Start the application.

			Application.Start(delegate

			{

				// Draw a grid for orientation.

				Grid.Draw();



				if (Input.Keyboard.EnterReleased ||

				    Input.Touch.TouchReleased)

				{

					if (effectId == MathHelper.InvalidIndex)

					{

						effectId = Effect.Spawn(data, Vector.Zero);

					}

					else

					{

						Effect.Stop(effectId);

						effectId = MathHelper.InvalidIndex;

					}

				}

			});

		}

		#endregion



		#region ElapsingEffect3D (Static)

		/// <summary>

		/// Spawn elapsing effect 3d

		/// </summary>

		[Test]

		public static void ElapsingEffect3D()

		{

			// Create a default camera.

			LookAtCamera cam = new LookAtCamera(new Vector(1, -5, 3));



			// Create a new template.

			EffectData data = EffectData.Get("<ElapsingEffect3D>");

			// Add an emitter and modifiers.

			EmitterData emitter = new EmitterData();

			emitter.Modifiers.Add(new AlwaysSpawnModifier());

			emitter.Modifiers.Add(Default3DMaterialModifier);

			emitter.Modifiers.Add(new VelocityModifier

			{

				Velocity = new Vector(0f, 0f, 1f)

			});

			emitter.Modifiers.Add(new TimeRangeModifier

			{

				TimeRange = new Range(0f, 5f),

			});

			data.Emitters.Add(emitter);

			int effectId = Effect.Spawn(data, Vector.Zero);



			// Start the application.

			Application.Start(delegate

			{

				// Draw a grid for orientation.

				Grid.Draw();

			});

		}

		#endregion



		#region BillboardModeTest (Static)

		/// <summary>

		/// Test all the billboard modes.

		/// </summary>

		[Test]

		public static void BillboardModeTest()

		{

			// Create a default camera.

			LookAtCamera cam = new LookAtCamera(new Vector(1, -5, 3));



			BillboardMode currentMode = BillboardMode.CameraFacing;



			// Create the new effect template with the first billboard mode.

			EffectData data = EffectData.Get("<BillboardModeTest>");

			// Add an emitter and modifiers.

			EmitterData emitter = new EmitterData();

			emitter.Modifiers.Add(new AlwaysSpawnModifier());

			emitter.Modifiers.Add(new SizeModifier

			{

				HeightRange = new Range(10),

				WidthRange = new Range(15),

			});

			MaterialModifier materialModifier = Default3DMaterialModifier;

			materialModifier.BillboardMode = currentMode;

			emitter.Modifiers.Add(materialModifier);

			data.Emitters.Add(emitter);



			int effectId = Effect.Spawn(data, Vector.Zero);



			// Start the application.

			Application.Start(delegate

			{

				// Draw a grid for orientation.

				Grid.Draw();

				// Show which mode we're currently using.

				Font.Default.Draw("currentMode=" + currentMode,

					new Rectangle(0.0f, ScreenSpace.DrawArea.Top, 1.0f,

						Font.Default.LineHeight));



				// Every time we hit enter or release a touch we want to go to the

				// next billboard mode for easy debugging of all modes.

				if (Input.Keyboard.EnterReleased ||

				    Input.Touch.TouchReleased)

				{

					// Go to the next mode

					currentMode = (BillboardMode)currentMode.Next();

					// Skip the only2D mode cause this is working in all the 2d tests

					// anyways.

					if (currentMode == BillboardMode.Only2D)

					{

						currentMode = (BillboardMode)currentMode.Next();

					}



					// Kill the previous effect if it exists.

					if (effectId != MathHelper.InvalidIndex)

					{

						Effect.Kill(effectId);

					}



					// Set the current mode and then spawn the new effect.

					materialModifier.BillboardMode = currentMode;

					effectId = Effect.Spawn(data, Vector.Zero);

				}

			});

		}

		#endregion



		#region BillboardModeTestDirect (Static)

		/// <summary>

		/// Test all the billboard modes directly over the BillboardManager

		/// without spawning an effect.

		/// </summary>

		[Test]

		public static void BillboardModeTestDirect()

		{

			// Create a default camera.

			LookAtCamera cam = new LookAtCamera(new Vector(1, -5, 3));



			BillboardMode currentMode = BillboardMode.CameraFacing;



			MaterialColored material = new MaterialColored("DeltaEngineLogo")

			{

				DrawLayer = RenderLayer.Normal,

				BlendColor = Color.White,

				billboardMode = currentMode,

			};



			// Start the application.

			Application.Start(delegate

			{

				// Draw a grid for orientation.

				Grid.Draw();



				Application.Window.Title = "currentMode=" + currentMode;



				// Every time we hit enter or release a touch we want to go to the

				// next billboard mode for easy debugging of all modes.

				if (Input.Keyboard.EnterReleased ||

				    Input.Touch.TouchReleased)

				{

					// Go to the next mode

					currentMode = (BillboardMode)currentMode.Next();

					// Skip the only2D mode cause this is working in all the 2d tests

					// anyways.

					if (currentMode == BillboardMode.Only2D)

					{

						currentMode = (BillboardMode)currentMode.Next();

					}



					material.billboardMode = currentMode;

				}



				BillboardManager.Instance.Draw(material, Vector.Zero,

					new Size(5, 2.5f), 0f);

				BillboardManager.Instance.Draw(material, new Vector(0f, -10f, 0f),

					new Size(5, 2.5f), 0f);

				BillboardManager.Instance.Draw(material, new Vector(0f, 10f, 0f),

					new Size(5, 2.5f), 0f);

			});

		}

		#endregion



		#region FountainEffect3D (Static)

		/// <summary>

		/// Fountain effect 3D

		/// 

		/// </summary>

		[Test]

		public static void FountainEffect3D()

		{

			// Set up camera

			LookAtCamera cam = new LookAtCamera(new Vector(1, -5, 3));



			// Create a new template.

			EffectData data = EffectData.Get("<FountainEffect3D>");

			// Add the emitters and modifiers.



			#region HeadEmitter

			EmitterData headEmitter = new EmitterData();

			headEmitter.Modifiers.AddRange(

				new IEffectModifier[]

				{

					new AlwaysSpawnModifier(),

					new SpawnIntervalModifier

					{

						SpawnInterval = 0.4f,

					},

					new VelocityModifier

					{

						Velocity = new VectorRange(Vector.UnitZ, -Vector.UnitZ),

					},

					new SizeModifier

					{

						WidthRange = 20f,

						HeightRange = 20f,

					},

					new ParticleLifetimeModifier

					{

						ParticleLifetime = 4f,

					},

					new RotationModifier

					{

						Rotation = new Range(0f, 360f),

					},

					new MaterialModifier

					{

						Material = new MaterialColored("SmokeSmallAdditive")

						{

							BlendColor = new Color(0.3f, 0.4f, 0.8f),

						},

						BillboardMode = BillboardMode.CameraFacingPrecise,

					},

				});

			data.Emitters.Add(headEmitter);

			#endregion



			#region MiddleSurfaceEmitter

			EmitterData middleSurfaceEmitter = new EmitterData();

			middleSurfaceEmitter.Modifiers.AddRange(

				new IEffectModifier[]

				{

					new AlwaysSpawnModifier(),

					new SpawnIntervalModifier

					{

						SpawnInterval = 0.3333f,

					},

					new SizeModifier

					{

						WidthRange = 60f,

						HeightRange = 60f,

					},

					new EmitterOffsetModifier

					{

						Offset = new Vector(0f, 0f, -1f),

					},

					new MaterialModifier

					{

						Material = new MaterialColored("SmokeSmallAdditive")

						{

							BlendColor = new Color(0.3f, 0.4f, 0.8f),

						},

						BillboardMode = BillboardMode.Ground,

					},

				});

			data.Emitters.Add(middleSurfaceEmitter);

			#endregion



			#region BottomSurfaceEmitter

			EmitterData bottomSurfaceEmitter = new EmitterData();

			bottomSurfaceEmitter.Modifiers.AddRange(

				new IEffectModifier[]

				{

					new AlwaysSpawnModifier(),

					new SpawnIntervalModifier

					{

						SpawnInterval = 0.3333f,

					},

					new SizeModifier

					{

						WidthRange = 150f,

						HeightRange = 150f,

					},

					new EmitterOffsetModifier

					{

						Offset = new Vector(0f, 0f, -4f),

					},

					new MaterialModifier

					{

						Material = new MaterialColored("SmokeSmallAdditive")

						{

							BlendColor = new Color(0.3f, 0.4f, 0.8f),

						},

						BillboardMode = BillboardMode.Ground,

					},

				});

			data.Emitters.Add(bottomSurfaceEmitter);

			#endregion



			Effect.Spawn(data, new Vector(0.0f, 0.0f, 4.5f));



			Matrix mat = Matrix.CreateScale(0.45f);



			Application.BackgroundColor = Color.Black;

			// Start the application.

			Application.Start(delegate

			{

				// Draw a grid for orientation and the fountain for the visual.

				Grid.Draw();

			});

		}

		#endregion



		#region SmokeEffect3D (Static)

		/// <summary>

		/// Smoke effect 3D

		/// </summary>

		[Test]

		public static void SmokeEffect3D()

		{

			// Set up camera

			LookAtCamera cam = new LookAtCamera(new Vector(1, -5, 3));



			// Create a new template.

			EffectData data = EffectData.Get("<SmokeEffect3D>");

			// Add an emitter and modifiers.

			EmitterData emitter = new EmitterData();

			emitter.Modifiers.Add(new SpawnIntervalModifier

			{

				SpawnInterval = 0.05f,

			});

			emitter.Modifiers.Add(new ParticleLifetimeModifier

			{

				ParticleLifetime = 7f

			});

			emitter.Modifiers.Add(new TimeRangeModifier

			{

				TimeRange = new Range(0f, float.PositiveInfinity),

			});

			Graph alphaGraph = new Graph();

			alphaGraph.Add(0f, 0f);

			alphaGraph.Add(0.2f, 1f);

			alphaGraph.Add(0.8f, 1f);

			alphaGraph.Add(1f, 0f);

			emitter.Modifiers.Add(new FadeModifier

			{

				AdvancedAlphaFade = alphaGraph,

			});

			emitter.Modifiers.Add(new MaterialModifier

			{

				Material = new MaterialColored("SmokeAdditive"),

				BillboardMode = BillboardMode.CameraFacingPrecise

			});

			emitter.Modifiers.Add(new SizeModifier

			{

				WidthRange = new Range(10f, 12f),

				HeightRange = new Range(10f, 12f),

			});

			emitter.Modifiers.Add(new RandomVelocityModifier

			{

				MinVelocity = new Vector(-0.1f, -0.3f, 0.4f),

				MaxVelocity = new Vector(0.3f, 0.3f, 0.4f),

			});

			data.Emitters.Add(emitter);

			Effect.Spawn(data, Vector.Zero);



			// Start the application.

			Application.Start(delegate

			{

				// Draw a grid for orientation.

				Grid.Draw();

			});

		}

		#endregion



		#region GroundMistEffect3D (Static)

		/// <summary>

		/// Mist effect 3D

		/// </summary>

		[Test]

		public static void GroundMistEffect3D()

		{

			// Set up camera

			LookAtCamera cam = new LookAtCamera(new Vector(1, -5, 3));



			// Create a new template.

			EffectData data = EffectData.Get("<GroundMistEffect3D>");

			// Add an emitter and modifiers.

			EmitterData emitter = new EmitterData();

			emitter.Modifiers.Add(new SpawnIntervalModifier

			{

				SpawnInterval = 0.1f,

			});

			emitter.Modifiers.Add(new ParticleLifetimeModifier

			{

				ParticleLifetime = 5f,

			});

			emitter.Modifiers.Add(new TimeRangeModifier

			{

				TimeRange = new Range(0f, float.PositiveInfinity),

			});

			Graph alphaGraph = new Graph();

			alphaGraph.Add(0f, 0f);

			alphaGraph.Add(0.5f, 0.4f);

			alphaGraph.Add(1f, 0f);

			emitter.Modifiers.Add(new FadeModifier

			{

				AdvancedAlphaFade = alphaGraph,

			});

			emitter.Modifiers.Add(new MaterialModifier

			{

				Material = new MaterialColored("SmokeAdditive")

				{

					BlendColor = new Color(1f, 1f, 1f),

				},

				BillboardMode = BillboardMode.Ground,

			});

			emitter.Modifiers.Add(new RandomVelocityModifier

			{

				MinVelocity = new Vector(-0.2f, -0.2f, 0f),

				MaxVelocity = new Vector(0.2f, 0.2f, 0f),

			});

			emitter.Modifiers.Add(new RandomSpawnOffsetModifier

			{

				MinOffset = new Vector(-5f, -5f, -0.1f),

				MaxOffset = new Vector(5f, 5f, 0.1f),

			});

			emitter.Modifiers.Add(new SizeModifier

			{

				WidthRange = new Range(20f, 25f),

				HeightRange = new Range(20f, 25f),

			});

			data.Emitters.Add(emitter);

			Effect.Spawn(data, new Vector(0.0f, 0.0f, 0.2f));



			MaterialColored planeMat = new MaterialColored(

				"InnerGroundBestHighMediumLowDiffuse");



			// Start the application.

			Application.Start(delegate

			{

				// Draw a sky and a plane for orientation.

				Sky.Draw();

				BillboardManager.Instance.DrawPlane(planeMat);

			});

		}

		#endregion



		#region SwordClashEffect3D (Static)

		/// <summary>

		/// Sword clash effect 3D

		/// </summary>

		[Test]

		public static void SwordClashEffect3D()

		{

			// Set up camera

			LookAtCamera cam = new LookAtCamera(new Vector(1, -5, 3));



			// Create a new template.

			EffectData data = EffectData.Get("<SwordClashEffect3D>");

			// Add an emitter and modifiers.

			EmitterData emitter = new EmitterData();

			emitter.Modifiers.Add(new SpawnOnceModifier());

			emitter.Modifiers.Add(new ParticleLifetimeModifier

			{

				ParticleLifetime = 0.1f,

			});

			emitter.Modifiers.Add(new MaterialModifier

			{

				Material = new MaterialColored("WaterSplatterAdditive")

				{

					BlendColor = new Color(0.6f, 0.6f, 0.2f),

				},

				BillboardMode = BillboardMode.CameraFacingPrecise,

			});

			emitter.Modifiers.Add(new VelocityModifier

			{

				Velocity = new VectorRange(new Vector(-0.5f, -0.5f, 0f),

					new Vector(0.5f, 0.5f, 0f)),

			});

			emitter.Modifiers.Add(new SizeModifier

			{

				WidthRange = new Range(3f, 10f),

				HeightRange = new Range(3f, 10f),

			});

			emitter.Modifiers.Add(new RotationModifier

			{

				Rotation = new Range(0f, 360f),

			});

			data.Emitters.Add(emitter);



			// Start the application.

			Application.Start(delegate

			{

				// Draw a grid for orientation.

				Grid.Draw();

				if (Input.Keyboard.EnterReleased)

				{

					Effect.Spawn(data, new Vector(0.0f, 0.0f, 0.1f));

				}

			});

		}

		#endregion



		#region FireEffect3D (Static)

		/// <summary>

		/// Fire effect 3D

		/// </summary>

		[Test]

		public static void FireEffect3D()

		{

			// Set up camera

			LookAtCamera cam = new LookAtCamera(new Vector(1, -5, 3));



			// Create a new template.

			EffectData data = EffectData.Get("<FireEffect3D>");



			// Add emitters and modifiers.

			EmitterData emitter = new EmitterData();

			emitter.Modifiers.Add(new SpawnIntervalModifier

			{

				SpawnInterval = 0.05f,

			});

			emitter.Modifiers.Add(new ParticleLifetimeModifier

			{

				ParticleLifetime = 1.2f

			});

			emitter.Modifiers.Add(new TimeRangeModifier

			{

				TimeRange = new Range(0f, float.PositiveInfinity),

			});

			Graph alphaFade = new Graph();

			alphaFade.Add(0f, 0f);

			alphaFade.Add(0.2f, 1f);

			alphaFade.Add(0.8f, 1f);

			alphaFade.Add(1f, 0f);

			emitter.Modifiers.Add(new FadeModifier

			{

				AdvancedAlphaFade = alphaFade,

			});

			emitter.Modifiers.Add(new SizeModifier

			{

				WidthRange = new Range(10f, 0.05f),

				HeightRange = new Range(10f, 0.05f),

			});

			emitter.Modifiers.Add(new MaterialModifier

			{

				Material = new MaterialColored("SmokeAdditive")

				{

					BlendColor = new Color(0.6f, 0.3f, 0f),

				},

				BillboardMode = BillboardMode.CameraFacingPrecise,

			});

			emitter.Modifiers.Add(new RandomSpawnOffsetModifier

			{

				MinOffset = new Vector(-0.05f, -0.05f, 0f),

				MaxOffset = new Vector(0.05f, 0.05f, 0f),

			});

			emitter.Modifiers.Add(new RandomVelocityModifier

			{

				MinVelocity = new Vector(-0.1f, -0.1f, 1f),

				MaxVelocity = new Vector(0.1f, 0.1f, 1f),

			});

			data.Emitters.Add(emitter);



			Effect.Spawn(data, Vector.Zero);



			// Start the application.

			Application.Start(delegate

			{

				// Draw a grid for orientation.

				Grid.Draw();

			});

		}

		#endregion



		#region BloodSplatterEffect3D (Static)

		/// <summary>

		/// Blood splatter effect 3D

		/// </summary>

		[Test]

		public static void BloodSplatterEffect3D()

		{

			// Set up camera

			LookAtCamera cam = new LookAtCamera(new Vector(1, -5, 3));



			// Create a new template.

			EffectData data = EffectData.Get("<BloodSplatterEffect3D>");

			// Add an emitter and modifiers.

			EmitterData emitter = new EmitterData();

			emitter.Modifiers.Add(new SpawnOnceModifier());

			emitter.Modifiers.Add(new ParticleLifetimeModifier

			{

				ParticleLifetime = 0.5f,

			});

			emitter.Modifiers.Add(new MaterialModifier

			{

				Material = new MaterialColored("BloodPoints")

				{

					BlendColor = new Color(0.6f, 0.6f, 0.2f),

				},

				BillboardMode = BillboardMode.CameraFacingPrecise,

			});

			emitter.Modifiers.Add(new VelocityModifier

			{

				Velocity = new VectorRange(new Vector(-0.5f, -0.5f, 0f),

					new Vector(0.5f, 0.5f, 0f)),

			});

			emitter.Modifiers.Add(new SizeModifier

			{

				WidthRange = new Range(3f, 10f),

				HeightRange = new Range(3f, 10f),

			});

			emitter.Modifiers.Add(new RotationModifier

			{

				Rotation = new Range(0f, 180f),

			});

			data.Emitters.Add(emitter);



			// Start the application.

			Application.Start(delegate

			{

				// Draw a grid for orientation.

				Grid.Draw();

				if (Input.Keyboard.EnterReleased)

				{

					// Spawn the effect.

					Effect.Spawn(data, new Vector(0.0f, 0.0f, 0.1f));

				}

			});

		}

		#endregion



		///// <summary>

		///// Lens flare effect 3D, together with a sun

		///// </summary>

		//public static void LensFlareEffect3D()

		//{

		//  // Set up camera

		//  LookAtCamera cam = new LookAtCamera(new Vector(-2, -5, -5));



		//  // Sun position taken from max scene.

		//  // Skydome needs to be changed to fit it. Note: Is changed now!

		//  Light.Direction = Light.SoulcraftTechDemoLightDirection;

		//  Light.Direction.Normalize();



		//  // Setup Lens Flare effect

		//  LensFlareEffect effect = new LensFlareEffect("LensFlareEffect",

		//    new Material2DColored("PentagonAdditive"),

		//    new Material2DColored("LensflareETransparency"));

		//  // Setup Glare effect

		//  effect.GlareMaterial = new Material2DColored("SunBlendAdditive");

		//  // And activate it

		//  effect.Activate();



		//  Application.Start(delegate

		//  {

		//    Sky.Draw();

		//    Grid.Draw();



		//    // Calculate positions for debug (same math as in LensFlareEffect)

		//    Vector sunPosition =

		//    Light.GetLightPosition(ScreenSpace.ViewInverse.Translation, 50.0f);

		//    Vector sunScreenPosition = ScreenSpace.Project(sunPosition);

		//    Font infoFont = Font.Default;

		//    float yPos = ScreenSpace.Area.Top + infoFont.LineHeight;

		//    infoFont.Write(new Point(0.5f, yPos),

		//      "SunScreenPosition= " + sunScreenPosition);

		//  });

		//}

	}

}