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#if UNITY_EDITOR
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using UnityEngine;
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using UnityEditor;
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using System.Collections.Generic;
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using System;
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namespace Gaia
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{
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[System.Serializable]
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public enum CoordinateSpace
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{
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World = 0,
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Brush,
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}
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[System.Serializable]
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public struct NoiseToolSettings
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{
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public Vector2 worldHeightRemap;
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public CoordinateSpace coordSpace;
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// TODO(wyatt): what happens if they don't have an active noise settings asset?
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public string noiseAssetGUID;
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public void Reset()
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{
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worldHeightRemap = new Vector2(0, 1);
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coordSpace = CoordinateSpace.World;
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noiseAssetGUID = null;
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}
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}
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/// <summary>
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/// A data class that can be used to define various types of noise.
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/// </summary>
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[System.Serializable]
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public class NoiseSettings : ScriptableObject
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{
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/// <summary>
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/// Struct containing information about the transform (translation, rotation, scale) to be
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/// applied to the noise. Usage of these values is depending on the actual noise
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/// implementation.
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/// </summary>
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[System.Serializable]
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public struct NoiseTransformSettings
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{
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/// <summary>
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/// The translation used when generating the noise field
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/// </summary>
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[Tooltip("The translational offset to use when generating the noise")]
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public Vector3 translation;
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/// <summary>
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/// The scale used when generating the noise field
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/// </summary>
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[Tooltip("The scale of the generated noise")]
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public Vector3 scale;
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/// <summary>
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/// The rotation used when generating the noise field
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/// </summary>
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[Tooltip("The rotation of the generated noise")]
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public Vector3 rotation;
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/// <summary>
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/// Determines whether the scale should be flipped across the x-axis
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/// </summary>
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[Tooltip("Whether or not the 2D noise field should be flipped along the X-axis")]
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public bool flipScaleX;
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/// <summary>
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/// Determines whether the scale should be flipped across the y-axis
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/// </summary>
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[Tooltip("Whether or not the 2D noise field should be flipped along the Y-axis")]
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public bool flipScaleY;
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/// <summary>
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/// Determines whether the scale should be flipped across the z-axis
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/// </summary>
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[Tooltip("Whether or not the 2D noise field should be flipped along the Z-axis")]
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public bool flipScaleZ;
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/// <summary>
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/// Resets the members of the transform struct to their default states and values
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/// </summary>
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public void Reset()
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{
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translation = Vector3.zero;
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scale = Vector3.one * 5f;
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rotation = Vector3.zero;
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flipScaleX = false;
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flipScaleY = false;
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flipScaleZ = false;
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}
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}
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/// <summary>
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/// Struct containing strings that reference the noise type and fractal type in use
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/// as well as the serialized data associated with the noise and fractal type.
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/// </summary>
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[System.Serializable]
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public struct NoiseDomainSettings
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{
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/// <summary>
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/// String representing the name of the NoiseType that is in use
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/// </summary>
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[Tooltip("The type of noise being generated")]
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public string noiseTypeName;
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/// <summary>
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/// String representing the name of the FractalType that is in use
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/// </summary>
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[Tooltip("The type of fractal used with the generated noise")]
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public string fractalTypeName;
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/// <summary>
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/// String containing serialized data for the active NoiseType
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/// </summary>
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[Tooltip("Settings specific to noise type")]
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public string noiseTypeParams;
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/// <summary>
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/// String containing serialized data for the active FractalType
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/// </summary>
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[Tooltip("Settings specific to noise type")]
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public string fractalTypeParams;
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/// <summary>
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/// Resets the domain settings to the defaults for the built-in Perlin NoiseType and Fbm FractalType
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/// </summary>
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public void Reset()
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{
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#if UNITY_EDITOR
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noiseTypeName = Gaia.PerlinNoise.instance.GetDescription().name;
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fractalTypeName = Gaia.FbmFractalType.instance.GetDescription().name;
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noiseTypeParams = Gaia.PerlinNoise.instance.GetDefaultSerializedString();
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fractalTypeParams = Gaia.FbmFractalType.instance.GetDefaultSerializedString();
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#endif
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}
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}
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// put filter stack in separate class just for the isExpanded functionality
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// of SerializedProperties
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// [System.Serializable]
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// public struct FilterSettings
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// {
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// [SerializeField]
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// public FilterStack filterStack;
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// }
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/// <summary>
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/// The transform settings for the defined noise field
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/// </summary>
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[Tooltip("Settings for noise transform and coordinate space")]
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public NoiseTransformSettings transformSettings;
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/// <summary>
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/// The domain settings for the defined noise field. Contains serialized data
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/// defining the NoiseType and FractalType for this NoiseSettings instance.
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/// </summary>
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[Tooltip("Settings for noise domain")]
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public NoiseDomainSettings domainSettings;
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// /// <summary>
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// /// MISSING
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// /// </summary>
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// public FilterSettings filterSettings;
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/// <summary>
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/// The noise field's TRS transformation Matrix
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/// </summary>
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/// <returns> A Matrix4x4 for the noise field's TRS matrix </returns>
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public Matrix4x4 trs
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{
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get
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{
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// set noise transform values
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Vector3 scale = transformSettings.scale;
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scale.x = transformSettings.flipScaleX ? -scale.x : scale.x;
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scale.y = transformSettings.flipScaleY ? -scale.y : scale.y;
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scale.z = transformSettings.flipScaleZ ? -scale.z : scale.z;
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// scale.w = transformSettings.flipScaleW ? -scale.w : scale.w;
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Matrix4x4 trs = Matrix4x4.TRS(transformSettings.translation,
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Quaternion.Euler(transformSettings.rotation),
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scale);
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return trs;
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}
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}
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/// <summary>
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/// Copies the runtime information from a provided NoiseSettings instance.
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/// </summary>
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/// <param name="noiseSettings"> The NoiseSettings instance to copy from </param>
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public void Copy(NoiseSettings noiseSettings)
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{
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transformSettings = noiseSettings.transformSettings;
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domainSettings = noiseSettings.domainSettings;
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// // TODO(wyatt): copy Filter Stack
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// Debug.LogError("TODO(wyatt): copy filter stack");
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}
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/// <summary>
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/// Copies the serialized information from a provided NoiseSettings instance
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/// </summary>
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/// <param name="noiseSettings"> The NoiseSettings instance to copy from </param>
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public void CopySerialized(NoiseSettings noiseSettings)
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{
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SerializedObject copy = new SerializedObject(noiseSettings);
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SerializedObject _this = new SerializedObject(this);
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copy.Update();
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_this.Update();
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_this.CopyFromSerializedProperty(copy.FindProperty("transformSettings"));
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_this.CopyFromSerializedProperty(copy.FindProperty("domainSettings"));
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// _this.CopyFromSerializedProperty(copy.FindProperty("m_filterSettings"));
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_this.ApplyModifiedProperties();
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}
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/// <summary>
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/// Resets this NoiseSettings instance to have the default settings
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/// </summary>
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public void Reset()
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{
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transformSettings.Reset();
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domainSettings.Reset();
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}
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/// <summary>
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/// Sets up the provided Material to be used with this NoiseSettings instance. Some assumptions are made
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/// here as far as definitions and variable declarations in the Material's Shader go.
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/// float4 _NoiseTranslation, float4 _NoiseRotation, float4 _NoiseScale, and float4x4 _NoiseTransform are
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/// assumed to be declared. Sets up the Material using the NoiseType and FractalType SetupMaterial
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/// functions.
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/// </summary>
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/// <param name="mat"> The Material to set up for use with this NoiseSettings instance </param>
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public void SetupMaterial(Material mat)
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{
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INoiseType noiseType = NoiseLib.GetNoiseTypeInstance(domainSettings.noiseTypeName);
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IFractalType fractalType = NoiseLib.GetFractalTypeInstance(domainSettings.fractalTypeName);
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// set individual transform info
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mat.SetVector(ShaderStrings.translation, transformSettings.translation);
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mat.SetVector(ShaderStrings.rotation, transformSettings.rotation);
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mat.SetVector(ShaderStrings.scale, transformSettings.scale);
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// set full transform matrix
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mat.SetMatrix(ShaderStrings.transform, trs);
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noiseType?.SetupMaterial(mat, domainSettings.noiseTypeParams);
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fractalType?.SetupMaterial(mat, domainSettings.fractalTypeParams);
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}
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/// <summary>
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/// Class containing the string names of shader properties used by noise shaders
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/// </summary>
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public static class ShaderStrings
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{
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/// <summary>
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/// Property for noise translation. Value = "_NoiseTranslation"
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/// </summary>
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public static readonly string translation = "_NoiseTranslation";
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/// <summary>
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/// Property for noise scale. Value = "_NoiseScale"
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/// </summary>
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public static readonly string scale = "_NoiseScale";
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/// <summary>
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/// Property for noise rotation. Value = "_NoiseRotation"
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/// </summary>
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public static readonly string rotation = "_NoiseRotation";
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/// <summary>
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/// Property for the noise transform. Value = "_NoiseTransform"
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/// </summary>
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public static readonly string transform = "_NoiseTransform";
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}
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}
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}
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#endif
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