/Core/Blocks/Input/SystemParameter.cs

/*

Copyright (c) 2011, Pawel Szczurek

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Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:





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*/



using System;

using System.Collections.Generic;

using System.Text;

using Core.Basic;

using Core.Main;

using Core.Var;

using System.Diagnostics;

using Core.CodeGeneration.Code;

using Core.Environment;



namespace Core.Blocks.Input

{

    [Block(Name = "SystemParameter", Path = "Input")]

    public class SystemParameter : BaseBlock

    {

        public class Parameter

        {

            public string Name;

            public Format Format;

            public Action<ICompiledShader> Upload;

        }



        public static readonly List<Parameter> Parameters = new List<Parameter>(new Parameter[]{

            new Parameter(){Name = "Model", Format = Format.FLOAT4X4,

                Upload = new Action<ICompiledShader>((x)=>x.SetParameter("Model", x.Owner.SystemParameters.GetParameter(Matrix44Parameter.Model)))},

            new Parameter(){Name = "ModelView", Format = Format.FLOAT4X4,

                Upload = new Action<ICompiledShader>((x)=>x.SetParameter("ModelView", x.Owner.SystemParameters.GetParameter(Matrix44Parameter.Model) * x.Owner.SystemParameters.GetParameter(Matrix44Parameter.View)))},

            new Parameter(){Name = "ModelViewProjection", Format = Format.FLOAT4X4,

                Upload = new Action<ICompiledShader>((x)=>x.SetParameter("ModelViewProjection", x.Owner.SystemParameters.GetParameter(Matrix44Parameter.Model) * x.Owner.SystemParameters.GetParameter(Matrix44Parameter.View) * x.Owner.SystemParameters.GetParameter(Matrix44Parameter.Projection)))},

            new Parameter(){Name = "View", Format = Format.FLOAT4X4,

                Upload = new Action<ICompiledShader>((x)=>x.SetParameter("View", x.Owner.SystemParameters.GetParameter(Matrix44Parameter.View)))},

            new Parameter(){Name = "ViewProjection", Format = Format.FLOAT4X4,

                Upload = new Action<ICompiledShader>((x)=>x.SetParameter("ViewProjection", x.Owner.SystemParameters.GetParameter(Matrix44Parameter.View) * x.Owner.SystemParameters.GetParameter(Matrix44Parameter.Projection)))},

            new Parameter(){Name = "Projection", Format = Format.FLOAT4X4,

                Upload = new Action<ICompiledShader>((x)=>x.SetParameter("Projection", x.Owner.SystemParameters.GetParameter(Matrix44Parameter.Projection)))},



            new Parameter(){Name = "Time", Format = Format.FLOAT,

                Upload = new Action<ICompiledShader>((x)=>x.SetParameter("Time", x.Owner.SystemParameters.GetParameter(Vector1Parameter.Time)))},



            new Parameter(){Name = "SinTime", Format = Format.FLOAT,

                Upload = new Action<ICompiledShader>((x)=>x.SetParameter("SinTime", new Vector1f((float)System.Math.Sin(x.Owner.SystemParameters.GetParameter(Vector1Parameter.Time).X))))},



            new Parameter(){Name = "CameraPositon", Format = Format.FLOAT3,

                Upload = new Action<ICompiledShader>((x)=>x.SetParameter("CameraPositon", x.Owner.SystemParameters.GetParameter(Vector3Parameter.CameraPosition)))},

            new Parameter(){Name = "CameraUp", Format = Format.FLOAT3,

                Upload = new Action<ICompiledShader>((x)=>x.SetParameter("CameraUp", x.Owner.SystemParameters.GetParameter(Vector3Parameter.CameraUp)))},

            new Parameter(){Name = "CameraForward", Format = Format.FLOAT3,

                Upload = new Action<ICompiledShader>((x)=>x.SetParameter("CameraForward", x.Owner.SystemParameters.GetParameter(Vector3Parameter.CameraForward)))},

            new Parameter(){Name = "CameraRight", Format = Format.FLOAT3,

                Upload = new Action<ICompiledShader>((x)=>x.SetParameter("CameraRight", x.Owner.SystemParameters.GetParameter(Vector3Parameter.CameraRight)))},



            new Parameter(){Name = "LightColor", Format = Format.FLOAT3,

                Upload = new Action<ICompiledShader>((x)=>x.SetParameter("LightColor", x.Owner.SystemParameters.GetParameter(Vector3Parameter.LightColor)))},

            new Parameter(){Name = "LightAttenuation", Format = Format.FLOAT3,

                Upload = new Action<ICompiledShader>((x)=>x.SetParameter("LightAttenuation", x.Owner.SystemParameters.GetParameter(Vector3Parameter.LightAttenuation)))},

            new Parameter(){Name = "LightPosition", Format = Format.FLOAT3,

                Upload = new Action<ICompiledShader>((x)=>x.SetParameter("LightPosition", x.Owner.SystemParameters.GetParameter(Vector3Parameter.LightPosition)))},

            new Parameter(){Name = "LightForward", Format = Format.FLOAT3,

                Upload = new Action<ICompiledShader>((x)=>x.SetParameter("LightForward", x.Owner.SystemParameters.GetParameter(Vector3Parameter.LightForward)))},

            new Parameter(){Name = "AmbientColor", Format = Format.FLOAT3,

                Upload = new Action<ICompiledShader>((x)=>x.SetParameter("AmbientColor", x.Owner.SystemParameters.GetParameter(Vector3Parameter.AmbientColor)))},



            //new Parameter(){Name = "LightShadowMap", Format = Format.TEXTURE},

            //new Parameter(){Name = "LightColorMap", Format = Format.TEXTURE},

            //new Parameter(){Name = "EnvironmentCubeMap", Format = Format.TEXTURE},

        });



        public class SystemParameterOutput : BlockOutput

        {

            public SystemParameterOutput(BaseBlock owner, Format f, string name)

                : base(owner, f, name)

            {

            }



            protected override Variable CreateVariable()

            {

                //ignore output format, always use correct one

                return Owner.BlockManager.VariableManager.CreateVariable(Name, Parameters.Find((x)=>x.Name == Name).Format, VerticesStreamSemantic.NONE, 0, Owner, true);

            }

        }



        public SystemParameter(BlockManager owner)

            : base(owner, new SystemParameterOptionsWindow())

        {

            AddOutput(new SystemParameterOutput(this, Format.FLOAT, "Time"));

        }



        public override void SetShaderParameters(Core.Environment.ICompiledShader s)

        {

            base.SetShaderParameters(s);



            foreach (var p in Parameters)

                p.Upload(s);

        }



        protected override BlockOutput CreateOutput()

        {

            return new SystemParameterOutput(this, Format.FLOAT4, "Time");

        }



        protected internal override void GenerateCode(Core.CodeGeneration.ShaderCodeGenerator sc)

        {

            sc.AddParameter(Outputs[0].Variable);

        }



        public string CurrentParameterName

        {

            get { return Outputs[0].Name; }

            set

            {

                Outputs[0].Name = value;

                Outputs[0].Format = Parameters.Find((x) => x.Name == value).Format;

            }

        }

    }

}