ZMWSLI0-SL2021-GR11/Projekt/MWSProjekt/Library/PackageCache/com.unity.terrain-tools@3.0.2-preview.3/Editor/TerrainTools/MeshStampTool.cs

487 lines
23 KiB
C#

using UnityEngine;
using UnityEngine.Experimental.TerrainAPI;
using UnityEditor.ShortcutManagement;
using UnityEngine.Experimental.Rendering;
namespace UnityEditor.Experimental.TerrainAPI
{
public class MeshStampTool : TerrainPaintTool<MeshStampTool>
{
#if UNITY_2019_1_OR_NEWER
[Shortcut("Terrain/Select Mesh Stamp Tool", typeof(TerrainToolShortcutContext))] // tells shortcut manager what to call the shortcut and what to pass as args
static void SelectShortcut(ShortcutArguments args)
{
TerrainToolShortcutContext context = (TerrainToolShortcutContext)args.context; // gets interface to modify state of TerrainTools
context.SelectPaintTool<MeshStampTool>(); // set active tool
TerrainToolsAnalytics.OnShortcutKeyRelease("Select Mesh Stamp Tool");
}
[ClutchShortcut("Terrain/Adjust Mesh Stamp Transform", typeof(TerrainToolShortcutContext), KeyCode.C)]
static void StrengthBrushShortcut(ShortcutArguments args)
{
if(args.stage == ShortcutStage.Begin)
{
m_editTransform = true;
}
else if(args.stage == ShortcutStage.End)
{
m_editTransform = false;
TerrainToolsAnalytics.OnShortcutKeyRelease("Adjust Mesh Stamp Transform");
}
}
#endif
private enum ShaderPasses
{
BrushPreviewFrontFaces = 0,
BrushPreviewBackFaces,
DepthPassFrontFaces,
DepthPassBackFaces,
StampToHeightmap
}
[SerializeField]
IBrushUIGroup m_brushUI;
private IBrushUIGroup commonUI
{
get
{
if( m_brushUI == null )
{
LoadSettings();
m_brushUI = new MeshBrushUIGroup( "MeshStampTool", UpdateAnalyticParameters );
m_brushUI.OnEnterToolMode();
}
return m_brushUI;
}
}
static class RenderTextureIDs
{
public static int cameraView = "cameraView".GetHashCode();
public static int meshStamp = "meshStamp".GetHashCode();
public static int meshStampPreview = "meshStampPreview".GetHashCode();
public static int meshStampMask = "meshStampMask".GetHashCode();
public static int sourceHeight = "sourceHeight".GetHashCode();
public static int combinedHeight = "combinedHeight".GetHashCode();
}
[System.Serializable]
class ToolSettings
{
public Quaternion rotation;
public Vector3 scale;
public float stampHeight;
public float blendAmount;
public string meshAssetGUID;
public bool showToolSettings;
public void SetDefaults()
{
rotation = Quaternion.identity;
scale = Vector3.one;
blendAmount = 0.0f;
stampHeight = 0.0f;
meshAssetGUID = null;
showToolSettings = true;
}
}
private Mesh m_activeMesh;
public Mesh activeMesh
{
get
{
if( m_activeMesh == null && !string.IsNullOrEmpty( toolSettings.meshAssetGUID ) )
{
m_activeMesh = AssetDatabase.LoadAssetAtPath<Mesh>( AssetDatabase.GUIDToAssetPath( toolSettings.meshAssetGUID ) );
}
return m_activeMesh;
}
set
{
m_activeMesh = value;
}
}
ToolSettings toolSettings = new ToolSettings();
RTHandleCollection m_rtCollection;
private Vector3 m_SceneRaycastHitPoint;
private BrushTransform brushXformIdentity = new BrushTransform(Vector2.zero, Vector2.right, Vector2.up);
[System.NonSerialized] private bool m_initialized = false;
private float m_prevBrushRotation;
private float m_prevBrushSize;
private Vector3 m_baseHandlePos;
private float m_handleHeightOffsetWS;
private float m_handleHeightViewOffsetWS;
static private bool m_prevEditTransform = false;
static private bool m_editTransform = false;
Bounds m_worldBounds;
private Material m_Material = null;
private Material GetMaterial()
{
if (m_Material == null)
{
m_Material = new Material(Shader.Find("Hidden/TerrainTools/MeshStamp"));
}
return m_Material;
}
public override void OnEnterToolMode()
{
base.OnEnterToolMode();
commonUI.OnEnterToolMode();
}
public override void OnExitToolMode()
{
base.OnExitToolMode();
commonUI.OnExitToolMode();
}
public override string GetName()
{
return Styles.nameString;
}
public override string GetDesc()
{
return Styles.descriptionString;
}
private void Init()
{
if( !m_initialized )
{
m_rtCollection = new RTHandleCollection();
m_rtCollection.AddRTHandle( RenderTextureIDs.cameraView, "cameraView", GraphicsFormat.R8G8B8A8_SRGB );
m_rtCollection.AddRTHandle( RenderTextureIDs.meshStamp, "meshStamp", GraphicsFormat.R16_SFloat );
m_rtCollection.AddRTHandle( RenderTextureIDs.meshStampPreview, "meshStampPreview", GraphicsFormat.R16_SFloat );
m_rtCollection.AddRTHandle( RenderTextureIDs.meshStampMask, "meshStampMask", GraphicsFormat.R16_UNorm );
m_rtCollection.AddRTHandle( RenderTextureIDs.sourceHeight, "sourceHeight", GraphicsFormat.R16_UNorm );
m_rtCollection.AddRTHandle( RenderTextureIDs.combinedHeight, "combinedHeight", GraphicsFormat.R16_UNorm );
m_initialized = true;
}
}
bool debugOrtho = true;
public override void OnInspectorGUI(Terrain terrain, IOnInspectorGUI editContext)
{
Init();
// brush GUI
commonUI.OnInspectorGUI(terrain, editContext);
EditorGUI.BeginChangeCheck();
{
toolSettings.showToolSettings = TerrainToolGUIHelper.DrawHeaderFoldoutForBrush( Styles.settings, toolSettings.showToolSettings, toolSettings.SetDefaults);
if( toolSettings.showToolSettings )
{
if (activeMesh == null)
{
EditorGUILayout.HelpBox(Styles.nullMeshString, MessageType.Warning);
}
activeMesh = EditorGUILayout.ObjectField(Styles.meshContent, activeMesh, typeof(Mesh), false) as Mesh;
GUILayout.Space(8f);
toolSettings.blendAmount = EditorGUILayout.Slider( Styles.blendAmount, toolSettings.blendAmount, 0, 1 );
GUILayout.Space(8f);
EditorGUILayout.BeginHorizontal();
{
EditorGUILayout.PrefixLabel( Styles.transformSettings );
GUILayout.FlexibleSpace();
if (GUILayout.Button(Styles.resetTransformContent, GUILayout.ExpandWidth(false)))
{
toolSettings.rotation = Quaternion.identity;
toolSettings.stampHeight = 0;
toolSettings.scale = Vector3.one;
}
}
EditorGUILayout.EndHorizontal();
toolSettings.stampHeight = EditorGUILayout.FloatField( Styles.stampHeightContent, toolSettings.stampHeight );
toolSettings.scale = EditorGUILayout.Vector3Field( Styles.stampScaleContent, toolSettings.scale );
toolSettings.rotation = Quaternion.Euler(EditorGUILayout.Vector3Field(Styles.stampRotationContent, toolSettings.rotation.eulerAngles));
}
}
if (EditorGUI.EndChangeCheck())
{
SaveSettings();
Save(true);
TerrainToolsAnalytics.OnParameterChange();
}
}
public override void OnSceneGUI( Terrain terrain, IOnSceneGUI editContext )
{
Init();
// m_rtCollection.OnSceneGUI( EditorWindow.GetWindow<SceneView>().position.height / 4 );
commonUI.OnSceneGUI2D( terrain, editContext );
// only do the rest if user mouse hits valid terrain or they are using the
// brush parameter hotkeys to resize, etc
if ( !editContext.hitValidTerrain && !commonUI.isInUse && !m_editTransform && !debugOrtho )
{
return;
}
// update brush UI group
commonUI.OnSceneGUI( terrain, editContext );
bool justPressedEditKey = m_editTransform && !m_prevEditTransform;
bool justReleaseEditKey = m_prevEditTransform && !m_editTransform;
m_prevEditTransform = m_editTransform;
if( justPressedEditKey )
{
( commonUI as MeshBrushUIGroup).LockTerrainUnderCursor( true );
m_baseHandlePos = commonUI.raycastHitUnderCursor.point;
m_handleHeightOffsetWS = 0;
}
else if( justReleaseEditKey )
{
( commonUI as MeshBrushUIGroup).UnlockTerrainUnderCursor();
m_handleHeightOffsetWS = 0;
}
// don't render mesh previews, etc. if the mesh field has not been populated yet
if ( activeMesh == null )
{
return;
}
// dont render preview if this isnt a repaint. losing performance if we do
if ( Event.current.type == EventType.Repaint )
{
Terrain currTerrain = commonUI.terrainUnderCursor;
Vector2 uv = commonUI.raycastHitUnderCursor.textureCoord;
float brushSize = commonUI.brushSize;
float brushRotation = commonUI.brushRotation;
if ( /* debugOrtho || */ commonUI.isRaycastHitUnderCursorValid )
{
// if(debugOrtho)
// {
// uv = Vector2.one * .5f;
// }
BrushTransform brushTransform = TerrainPaintUtility.CalculateBrushTransform( currTerrain, uv, brushSize, brushRotation );
PaintContext ctx = TerrainPaintUtility.BeginPaintHeightmap( commonUI.terrainUnderCursor, brushTransform.GetBrushXYBounds(), 1 );
Material material = TerrainPaintUtilityEditor.GetDefaultBrushPreviewMaterial();
// don't draw the brush mask preview
// but draw the resulting mesh stamp preview
{
ApplyBrushInternal( terrain, ctx, brushTransform );
TerrainPaintUtilityEditor.DrawBrushPreview( ctx, TerrainPaintUtilityEditor.BrushPreview.SourceRenderTexture,
m_rtCollection[ RenderTextureIDs.meshStamp ], brushTransform, material, 0 );
RenderTexture.active = ctx.oldRenderTexture;
material.SetTexture( "_HeightmapOrig", ctx.sourceRenderTexture );
TerrainPaintUtility.SetupTerrainToolMaterialProperties( ctx, brushTransform, material );
TerrainPaintUtilityEditor.DrawBrushPreview( ctx, TerrainPaintUtilityEditor.BrushPreview.DestinationRenderTexture,
m_rtCollection[ RenderTextureIDs.meshStamp ], brushTransform, material, 1 );
TerrainPaintUtility.ReleaseContextResources( ctx );
m_rtCollection.ReleaseRTHandles();
}
}
}
if( m_editTransform )
{
EditorGUI.BeginChangeCheck();
{
Vector3 prevHandlePosWS = m_baseHandlePos + Vector3.up * m_handleHeightOffsetWS;
// draw transform handles
float handleSize = HandleUtility.GetHandleSize( prevHandlePosWS );
Quaternion brushRotation = Quaternion.AngleAxis( commonUI.brushRotation, Vector3.up );
Matrix4x4 brushRotMat = Matrix4x4.Rotate( brushRotation );
Matrix4x4 toolRotMat = Matrix4x4.Rotate( toolSettings.rotation );
Quaternion handleRot = MeshUtils.QuaternionFromMatrix( brushRotMat * toolRotMat );
Quaternion newRot = Handles.RotationHandle( handleRot, prevHandlePosWS );
toolSettings.rotation = MeshUtils.QuaternionFromMatrix( brushRotMat.inverse * Matrix4x4.Rotate( newRot ) );
toolSettings.scale = Handles.ScaleHandle( toolSettings.scale, prevHandlePosWS, handleRot, handleSize * 1.5f );
Vector3 currHandlePosWS = Handles.Slider( prevHandlePosWS, Vector3.up, handleSize, Handles.ArrowHandleCap, 1f );
float deltaHeight = ( currHandlePosWS.y - prevHandlePosWS.y );
m_handleHeightOffsetWS += deltaHeight;
toolSettings.stampHeight += deltaHeight;
}
if( EditorGUI.EndChangeCheck() )
{
SaveSettings();
editContext.Repaint();
}
}
}
private void ApplyBrushInternal(Terrain terrain, PaintContext ctx, BrushTransform brushTransform)
{
Init();
m_rtCollection.ReleaseRTHandles();
m_rtCollection.GatherRTHandles( ctx.sourceRenderTexture.width, ctx.sourceRenderTexture.height, 16 );
Graphics.Blit( ctx.sourceRenderTexture, m_rtCollection[ RenderTextureIDs.sourceHeight ] );
Material mat = GetMaterial();
var brushMask = RTUtils.GetTempHandle(ctx.sourceRenderTexture.width, ctx.sourceRenderTexture.height, 0, FilterUtility.defaultFormat);
Utility.SetFilterRT(commonUI, ctx.sourceRenderTexture, brushMask, mat);
Matrix4x4 toolMatrix = Matrix4x4.TRS( Vector3.zero, toolSettings.rotation, toolSettings.scale );
Bounds modelBounds = activeMesh.bounds;
float maxModelScale = Mathf.Max( Mathf.Max( modelBounds.size.x, modelBounds.size.y ), modelBounds.size.z );
// maxModelScale *= Mathf.Sqrt( 2 + maxModelScale * maxModelScale / 4 ) * .5f; // mult so the mesh fits a little better within the camera / stamp texture bounds
// maxModelScale /= 1.414f;
float x = .5f;
float y = .5f;
float xy = Mathf.Sqrt( x * x + y * y );
float z = .5f;
float xyz = Mathf.Sqrt( xy * xy + z * z );
maxModelScale *= xyz;
// build the model matrix to transform the mesh with. we want to scale it to fit in the brush bounds and also center it in the brush bounds
Matrix4x4 model = toolMatrix * Matrix4x4.Scale( Vector3.one / maxModelScale ) * Matrix4x4.Translate( -modelBounds.center );
// get the world bounds here so we can calculate the needed offset along the up axis
// Bounds worldBounds = MeshUtility.TransformBounds( model, activeMesh.bounds );
// float localHeightOffset = Mathf.Min( worldBounds.extents.y, toolSettings.stampHeight / brushUI.terrainUnderCursor.terrainData.size.y * .5f );
// Matrix4x4 localHeightOffsetMatrix = Matrix4x4.Translate( Vector3.up * localHeightOffset );
// apply the local height offset
// model = localHeightOffsetMatrix * model;
Vector3 translate = Vector3.up * ( toolSettings.stampHeight ) / commonUI.terrainUnderCursor.terrainData.size.y;
// translate = translate / brushUI.brushStrength * .5f;
model = Matrix4x4.Translate( translate ) * model;
// actually render the mesh to texture to be used with the tool shader
MeshUtils.RenderTopdownProjection( activeMesh, model,
m_rtCollection[ RenderTextureIDs.meshStamp ],
MeshUtils.defaultProjectionMaterial,
MeshUtils.ShaderPass.Height );
// this doesn't actually apply any noise to the destination RT but will color the destination RT based on whether the fragment values are (+) or (-)
NoiseUtils.BlitPreview2D( m_rtCollection[ RenderTextureIDs.meshStamp ], m_rtCollection[ RenderTextureIDs.meshStampPreview ] );
// generate a mask for the mesh to be used in the compositing shader
MeshUtils.RenderTopdownProjection( activeMesh, model,
m_rtCollection[ RenderTextureIDs.meshStampMask ],
MeshUtils.defaultProjectionMaterial,
MeshUtils.ShaderPass.Mask );
// perform actual composite of mesh stamp and terrain source heightmap
float brushStrength = Event.current.control ? -commonUI.brushStrength : commonUI.brushStrength;
Vector4 brushParams = new Vector4( brushStrength, toolSettings.blendAmount, ( commonUI.raycastHitUnderCursor.point.y - commonUI.terrainUnderCursor.GetPosition().y ) / commonUI.terrainUnderCursor.terrainData.size.y * .5f, toolSettings.stampHeight / commonUI.terrainUnderCursor.terrainData.size.y * .5f );
mat.SetVector( "_BrushParams", brushParams );
mat.SetTexture( "_MeshStampTex", m_rtCollection[ RenderTextureIDs.meshStamp ] );
mat.SetTexture( "_MeshMaskTex", m_rtCollection[ RenderTextureIDs.meshStampMask ] );
mat.SetFloat( "_TerrainHeight", commonUI.terrainUnderCursor.terrainData.size.y );
TerrainPaintUtility.SetupTerrainToolMaterialProperties( ctx, brushTransform, mat );
Graphics.Blit( ctx.sourceRenderTexture, ctx.destinationRenderTexture, mat, 0 );
Graphics.Blit( ctx.destinationRenderTexture, m_rtCollection[ RenderTextureIDs.combinedHeight ] );
// restore old render target
RenderTexture.active = ctx.oldRenderTexture;
RTUtils.Release(brushMask);
}
public override bool OnPaint(Terrain terrain, IOnPaint editContext)
{
Init();
if (activeMesh == null || Event.current.type != EventType.MouseDown || Event.current.shift == true || m_editTransform)
{
return false;
}
commonUI.OnPaint( terrain, editContext );
if ( commonUI.allowPaint )
{
Texture brushTexture = editContext.brushTexture;
BrushTransform brushTransform = TerrainPaintUtility.CalculateBrushTransform( terrain, editContext.uv, commonUI.brushSize, commonUI.brushRotation );
PaintContext ctx = TerrainPaintUtility.BeginPaintHeightmap( terrain, brushTransform.GetBrushXYBounds() );
ApplyBrushInternal( terrain, ctx, brushTransform );
TerrainPaintUtility.EndPaintHeightmap( ctx, "Mesh Stamp - Stamp Mesh" );
m_rtCollection.ReleaseRTHandles();
}
return true;
}
private void SaveSettings()
{
toolSettings.meshAssetGUID = activeMesh == null ? "" : AssetDatabase.AssetPathToGUID( AssetDatabase.GetAssetPath( activeMesh ) );
string meshstampToolData = JsonUtility.ToJson( toolSettings );
EditorPrefs.SetString("Unity.TerrainTools.MeshStamp", meshstampToolData);
}
private void LoadSettings()
{
string meshstampToolData = EditorPrefs.GetString("Unity.TerrainTools.MeshStamp");
toolSettings.SetDefaults();
JsonUtility.FromJsonOverwrite(meshstampToolData, toolSettings);
}
private static class Styles
{
public static readonly string nameString = "Mesh Stamp";
public static readonly string descriptionString =
"Left Click to stamp the selected mesh into the heightmap (addition)." +
"\n\nHold Control + Left Click to indent the selected mesh into the heightmap (subtraction)." +
"\n\nHold 'C' to bring up the gizmos for rotation, scale, and height.";
public static readonly GUIContent blendAmount = EditorGUIUtility.TrTextContent("Blend Amount",
"Amount of blending to apply to the stamp. 0 means no blending. 1 means fully additive blending");
public static readonly GUIContent stampHeightContent = EditorGUIUtility.TrTextContent("Height Offset", "The height to stamp the mesh into the terrain at.");
public static readonly GUIContent stampScaleContent = EditorGUIUtility.TrTextContent("Scale", "The scale of the mesh.");
public static readonly GUIContent stampRotationContent = EditorGUIUtility.TrTextContent("Rotation", "The rotation of the mesh.");
public static readonly GUIContent meshContent = EditorGUIUtility.TrTextContent("Mesh", "The mesh to stamp.");
public static readonly GUIContent settings = EditorGUIUtility.TrTextContent("Mesh Stamp Settings");
public static readonly GUIContent transformSettings = EditorGUIUtility.TrTextContent("Transform Settings:");
public static readonly GUIContent resetTransformContent = EditorGUIUtility.TrTextContent("Reset",
"Resets the mesh's rotation, scale, and height to their default state.");
public static readonly string nullMeshString = "Must assign a mesh to use with the Mesh Stamp Tool.";
}
#region Analytics
private TerrainToolsAnalytics.IBrushParameter[] UpdateAnalyticParameters() => new TerrainToolsAnalytics.IBrushParameter[]{
new TerrainToolsAnalytics.BrushParameter<float>{Name = Styles.blendAmount.text, Value = toolSettings.blendAmount},
new TerrainToolsAnalytics.BrushParameter<float>{Name = Styles.stampHeightContent.text, Value = toolSettings.stampHeight},
new TerrainToolsAnalytics.BrushParameter<Vector3>{Name = Styles.stampScaleContent.text, Value = toolSettings.scale},
new TerrainToolsAnalytics.BrushParameter<Vector3>{Name = Styles.stampRotationContent.text, Value = toolSettings.rotation.eulerAngles},
};
#endregion
}
}