www.pudn.com > IntroductionTo3DGameEngineDesign.rar > Interfaces.cs

using System; 
using Microsoft.DirectX; 
 
namespace GameEngine 
{ 
	/// 
 Basic structures used in the game
 
	public struct Attitude 
	{ 
		public float Pitch; 
		public float Heading; 
		public float Roll; 
 
		public Attitude( float pitch, float heading, float roll ) 
		{ 
			Pitch = pitch; 
			Heading = heading; 
			Roll = roll; 
		} 
		public static float Aepc( float angle ) 
		{ 
			if ( angle > (2.0*Math.PI) ) 
			{ 
				angle -= (float)(2.0*Math.PI); 
			} 
			if ( angle < 0.0f ) 
			{ 
				angle += (float)(2.0*Math.PI); 
			} 
			return angle; 
		} 
		public static float Aepc2( float angle ) 
		{ 
			if ( angle > Math.PI ) 
			{ 
				angle -= (float)(2.0*Math.PI); 
			} 
			if ( angle < -Math.PI ) 
			{ 
				angle += (float)(2.0*Math.PI); 
			} 
			return angle; 
		} 
	} 
 
	/// 
 
	/// Interfaces used in the game engine. 
	/// 
 
	public interface IRenderable 
	{ 
		void Render(Camera cam); 
	} 
 
	public interface ICullable 
	{ 
		bool Culled { set; } 
		bool IsCulled { get; } 
	} 
 
	public interface ICollidable 
	{ 
		Vector3 CenterOfMass { get; } 
		float   BoundingRadius { get; } 
		bool CollideSphere ( Object3D other ); 
		bool CollidePolygon ( Vector3 Point1, Vector3 Point2, Vector3 Point3 ); 
	} 
 
	public interface IDynamic 
	{ 
		void Update( float DeltaT ); 
	} 
 
	public interface ITerrainInfo 
	{ 
		float    HeightOfTerrain( Vector3 Position ); 
		float    HeightAboveTerrain( Vector3 Position ); 
		bool     InLineOfSight( Vector3 Position1, Vector3 Position2 ); 
		Attitude GetSlope( Vector3 Position, float Heading ); 
	} 
}