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306
aiwaz/Aiwaz.Resources/Transformation.cs
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306
aiwaz/Aiwaz.Resources/Transformation.cs
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using Aiwaz.Contracts;
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using Aiwaz.Resources.Attributes;
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namespace Aiwaz.Resources
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{
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public class TransformationBindings : ICreationParams
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{
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public string WorldMatrixSemanticName;
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public string LocalMatrixSemanticName;
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public string WorldPositionSemanticName;
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public string LocalPositionSemanticName;
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public string WorldDirectionSemanticName;
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public string LocalDirectionSemanticName;
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public string WorldUpDirectionSemanticName;
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public string LocalUpDirectionSemanticName;
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public string WorldRightDirectionSemanticName;
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public string LocalRightDirectionSemanticName;
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}
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[CreationParameters("Default transformation")]
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public class DefaultTransformationBindings : TransformationBindings
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{
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public DefaultTransformationBindings()
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{
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WorldMatrixSemanticName = "WorldMatrix";
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LocalMatrixSemanticName = "LocalMatrix";
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WorldPositionSemanticName = "WorldPosition";
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LocalPositionSemanticName = "LocalPosition";
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WorldDirectionSemanticName = "WorldDirection";
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LocalDirectionSemanticName = "LocalDirection";
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WorldUpDirectionSemanticName = "WorldUpDirection";
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LocalUpDirectionSemanticName = "LocalUpDirection";
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WorldRightDirectionSemanticName = "WorldUpDirection";
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LocalRightDirectionSemanticName = "LocalUpDirection";
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}
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}
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[CreationParameters("Camera transformation")]
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public class CameraTransformationBindings : TransformationBindings
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{
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public CameraTransformationBindings()
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{
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WorldPositionSemanticName = "CamPos";
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WorldDirectionSemanticName = "CamDir";
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}
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}
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[AiwazResource("Transformation", "Common transformations for a shader and geometry buffers like position, scale and rotation.")]
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public class Transformation : ShaderParameterSet, IUpdatable
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{
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#region ITransformation Members
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Reference worldMatrixRef = new Reference(new SlimDX.Matrix());
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Reference worldPositionRef = new Reference(new SlimDX.Vector3());
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Reference worldDirectionRef = new Reference(new SlimDX.Vector3());
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Reference worldUpDirectionRef = new Reference(new SlimDX.Vector3());
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Reference worldRightDirectionRef = new Reference(new SlimDX.Vector3());
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Reference localMatrixRef = new Reference(new SlimDX.Matrix());
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Reference localPositionRef = new Reference(new SlimDX.Vector3());
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Reference localDirectionRef = new Reference(new SlimDX.Vector3());
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Reference localUpDirectionRef = new Reference(new SlimDX.Vector3());
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Reference localRightDirectionRef = new Reference(new SlimDX.Vector3());
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private TransformationBindings transformationBindings;
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private SlimDX.Vector3 lastKnownYawPitchRoll;
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private SlimDX.Quaternion localRotation;
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private SlimDX.Vector3 localScale;
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private Transformation transformationParent;
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private List<Transformation> transformations = new List<Transformation>();
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private Transformation()
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: base(5)
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{
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}
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private Transformation(TransformationBindings transformationBindings)
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: this()
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{
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this.WorldScale = this.LocalScale = new SlimDX.Vector3(1.0f, 1.0f, 1.0f);
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this.LocalDirection = this.WorldDirection = new SlimDX.Vector3(0.0f, 0.0f, 1.0f);
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this.LocalUpDirection = this.WorldUpDirection = new SlimDX.Vector3(0.0f, 1.0f, 0.0f);
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this.LocalRightDirection = this.WorldRightDirection = new SlimDX.Vector3(1.0f, 0.0f, 0.0f);
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this.TransformationBindings = transformationBindings;
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}
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public Transformation(DefaultTransformationBindings transformationBindings)
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: this((TransformationBindings)transformationBindings)
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{
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}
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public Transformation(CameraTransformationBindings transformationBindings)
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: this((TransformationBindings)transformationBindings)
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{
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}
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public TransformationBindings TransformationBindings
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{
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get { return transformationBindings; }
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set
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{
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transformationBindings = value;
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baseShaderParameterSet.RemoveAllShaderParameters();
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this.RecreateAllShaderParameters();
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}
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}
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public SlimDX.Vector3 LocalPosition
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{
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get { return (SlimDX.Vector3)localPositionRef.RawValue; }
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set
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{
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localPositionRef.RawValue = value;
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WantsUpdate = true;
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}
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}
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public SlimDX.Vector3 WorldPosition { get { return (SlimDX.Vector3)worldPositionRef.RawValue; } protected set { worldPositionRef.RawValue = value; } }
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public SlimDX.Vector3 LocalRotationYPR
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{
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get
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{
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return lastKnownYawPitchRoll;
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}
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set
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{
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lastKnownYawPitchRoll = value;
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LocalRotation = SlimDX.Quaternion.RotationYawPitchRoll(value.X, value.Y, value.Z);
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WantsUpdate = true;
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}
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}
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public SlimDX.Quaternion LocalRotation
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{
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get { return localRotation; }
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set
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{
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localRotation = value;
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WantsUpdate = true;
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}
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}
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public SlimDX.Quaternion WorldRotation { get; protected set; }
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public SlimDX.Vector3 LocalDirection { get { return (SlimDX.Vector3)localDirectionRef.RawValue; } protected set { localDirectionRef.RawValue = value; } }
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public SlimDX.Vector3 WorldDirection { get { return (SlimDX.Vector3)worldDirectionRef.RawValue; } protected set { worldDirectionRef.RawValue = value; } }
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public SlimDX.Vector3 LocalUpDirection { get { return (SlimDX.Vector3)localUpDirectionRef.RawValue; } protected set { localUpDirectionRef.RawValue = value; } }
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public SlimDX.Vector3 WorldUpDirection { get { return (SlimDX.Vector3)worldUpDirectionRef.RawValue; } protected set { worldUpDirectionRef.RawValue = value; } }
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public SlimDX.Vector3 LocalRightDirection { get { return (SlimDX.Vector3)localRightDirectionRef.RawValue; } protected set { localRightDirectionRef.RawValue = value; } }
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public SlimDX.Vector3 WorldRightDirection { get { return (SlimDX.Vector3)worldRightDirectionRef.RawValue; } protected set { worldRightDirectionRef.RawValue = value; } }
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public SlimDX.Vector3 LocalScale
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{
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get { return localScale; }
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set
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{
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localScale = value;
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WantsUpdate = true;
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}
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}
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public SlimDX.Vector3 WorldScale { get; protected set; }
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public SlimDX.Matrix WorldMatrix { get { return (SlimDX.Matrix)worldMatrixRef.RawValue; } protected set { worldMatrixRef.RawValue = value; } }
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public SlimDX.Matrix LocalMatrix { get { return (SlimDX.Matrix)localMatrixRef.RawValue; } protected set { localMatrixRef.RawValue = value; } }
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public Transformation TransformationParent
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{
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get { return transformationParent; }
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set
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{
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var oldTransformationParent = transformationParent;
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transformationParent = value;
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WantsUpdate = true;
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if (oldTransformationParent != null)
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oldTransformationParent.RemoveTransformation(this);
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}
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}
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public IEnumerable<Transformation> Transformations { get { return transformations; } }
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public void AddTransformation(Transformation transformation)
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{
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if (!transformations.Contains(transformation))
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{
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transformation.TransformationParent = this;
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transformations.Add(transformation);
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WantsUpdate = true;
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}
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}
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public void RemoveTransformation(Transformation transformation)
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{
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if (transformations.Remove(transformation))
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transformation.TransformationParent = null;
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}
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protected virtual void RecreateAllShaderParameters()
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{
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if (transformationBindings == null)
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return;
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if (!string.IsNullOrEmpty(transformationBindings.WorldMatrixSemanticName))
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this.SetParameter(transformationBindings.WorldMatrixSemanticName, worldMatrixRef, ParameterBindType.BindBySemantic);
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if (!string.IsNullOrEmpty(transformationBindings.LocalMatrixSemanticName))
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this.SetParameter(transformationBindings.LocalMatrixSemanticName, localMatrixRef, ParameterBindType.BindBySemantic);
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if (!string.IsNullOrEmpty(transformationBindings.WorldPositionSemanticName))
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this.SetParameter(transformationBindings.WorldPositionSemanticName, worldPositionRef, ParameterBindType.BindBySemantic);
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if (!string.IsNullOrEmpty(transformationBindings.LocalPositionSemanticName))
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this.SetParameter(transformationBindings.LocalPositionSemanticName, localPositionRef, ParameterBindType.BindBySemantic);
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if (!string.IsNullOrEmpty(transformationBindings.WorldDirectionSemanticName))
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this.SetParameter(transformationBindings.WorldDirectionSemanticName, worldDirectionRef, ParameterBindType.BindBySemantic);
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if (!string.IsNullOrEmpty(transformationBindings.LocalDirectionSemanticName))
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this.SetParameter(transformationBindings.LocalDirectionSemanticName, localDirectionRef, ParameterBindType.BindBySemantic);
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if (!string.IsNullOrEmpty(transformationBindings.WorldUpDirectionSemanticName))
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this.SetParameter(transformationBindings.WorldUpDirectionSemanticName, worldUpDirectionRef, ParameterBindType.BindBySemantic);
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if (!string.IsNullOrEmpty(transformationBindings.LocalUpDirectionSemanticName))
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this.SetParameter(transformationBindings.LocalUpDirectionSemanticName, localUpDirectionRef, ParameterBindType.BindBySemantic);
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if (!string.IsNullOrEmpty(transformationBindings.WorldRightDirectionSemanticName))
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this.SetParameter(transformationBindings.WorldRightDirectionSemanticName, worldRightDirectionRef, ParameterBindType.BindBySemantic);
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if (!string.IsNullOrEmpty(transformationBindings.LocalRightDirectionSemanticName))
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this.SetParameter(transformationBindings.LocalRightDirectionSemanticName, localRightDirectionRef, ParameterBindType.BindBySemantic);
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}
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#endregion
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#region IUpdatable Members
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public virtual void Update(bool forceUpdate)
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{
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if (!WantsUpdate && !forceUpdate)
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return;
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WantsUpdate = false;
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var localMatrix = SlimDX.Matrix.Transformation(SlimDX.Vector3.Zero, SlimDX.Quaternion.Identity, localScale, SlimDX.Vector3.Zero, localRotation, this.LocalPosition);
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var direction = new SlimDX.Vector3(0.0f, 0.0f, 1.0f);
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var upDirection = new SlimDX.Vector3(0.0f, 1.0f, 0.0f);
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var rightDirection = new SlimDX.Vector3(1.0f, 0.0f, 0.0f);
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{
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var rotMat = SlimDX.Matrix.RotationQuaternion(localRotation);
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LocalDirection = SlimDX.Vector3.TransformNormal(direction, rotMat);
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LocalUpDirection = SlimDX.Vector3.TransformNormal(upDirection, rotMat);
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LocalRightDirection = SlimDX.Vector3.TransformNormal(rightDirection, rotMat);
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}
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WorldMatrix = localMatrix;
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// stack parent matrix
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if (transformationParent != null)
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WorldMatrix = localMatrix * transformationParent.WorldMatrix;
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// extract world related data
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SlimDX.Vector3 tmpScale;
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SlimDX.Vector3 tmpPos;
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SlimDX.Quaternion tmpRot;
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WorldMatrix.Decompose(out tmpScale, out tmpRot, out tmpPos);
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WorldPosition = tmpPos;
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WorldRotation = tmpRot;
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WorldScale = tmpScale;
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{
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var rotMat = SlimDX.Matrix.RotationQuaternion(WorldRotation);
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WorldDirection = SlimDX.Vector3.TransformNormal(direction, rotMat);
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WorldUpDirection = SlimDX.Vector3.TransformNormal(upDirection, rotMat);
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WorldRightDirection = SlimDX.Vector3.TransformNormal(rightDirection, rotMat);
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}
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// update following transformations
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foreach (var transformation in transformations)
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if (transformation is IUpdatable)
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{
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var updatable = transformation as IUpdatable;
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if (updatable != null && (updatable.WantsUpdate || forceUpdate))
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updatable.Update(forceUpdate);
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}
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}
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public bool WantsUpdate { get; protected set; }
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#endregion
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}
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}
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