245 lines
10 KiB
C#
245 lines
10 KiB
C#
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using UnityEngine;
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using UnityEngine.TerrainTools;
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using UnityEditor.ShortcutManagement;
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namespace UnityEditor.TerrainTools
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{
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internal class SmudgeHeightTool : TerrainPaintTool<SmudgeHeightTool>
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{
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#if UNITY_2019_1_OR_NEWER
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[Shortcut("Terrain/Select Smudge Tool", typeof(TerrainToolShortcutContext))]
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static void SelectShortcut(ShortcutArguments args)
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{
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TerrainToolShortcutContext context = (TerrainToolShortcutContext)args.context;
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context.SelectPaintTool<SmudgeHeightTool>();
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TerrainToolsAnalytics.OnShortcutKeyRelease("Select Smudge Tool");
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}
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#endif
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[SerializeField]
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IBrushUIGroup m_commonUI;
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private IBrushUIGroup commonUI {
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get
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{
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if (m_commonUI == null)
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{
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LoadSettings();
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m_commonUI = new DefaultBrushUIGroup(
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"SmudgeTool",
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UpdateAnalyticParameters,
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DefaultBrushUIGroup.Feature.All,
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new DefaultBrushUIGroup.FeatureDefaults { Strength = 0.99f }
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);
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m_commonUI.OnEnterToolMode();
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}
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return m_commonUI;
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}
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}
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EventType m_PreviousEvent = EventType.Ignore;
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Vector2 m_PrevBrushPos = new Vector2(0.0f, 0.0f);
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[SerializeField]
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bool m_AffectMaterials = true;
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[SerializeField]
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bool m_AffectHeight = true;
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Material m_Material = null;
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Material GetPaintMaterial()
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{
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if (m_Material == null)
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m_Material = new Material(Shader.Find("Hidden/TerrainTools/SmudgeHeight"));
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return m_Material;
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}
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public override string GetName()
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{
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return "Transform/Smudge";
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}
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public override string GetDescription()
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{
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return "Smears Terrain features and layers.";
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}
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public override void OnEnterToolMode()
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{
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base.OnEnterToolMode();
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commonUI.OnEnterToolMode();
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}
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public override void OnExitToolMode()
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{
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base.OnExitToolMode();
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commonUI.OnExitToolMode();
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}
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public override void OnSceneGUI(Terrain terrain, IOnSceneGUI editContext)
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{
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commonUI.OnSceneGUI2D(terrain, editContext);
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// only do the rest if user mouse hits valid terrain or they are using the
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// brush parameter hotkeys to resize, etc
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if (!editContext.hitValidTerrain && !commonUI.isInUse)
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{
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return;
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}
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// update brush UI group
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commonUI.OnSceneGUI(terrain, editContext);
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// dont render preview if this isnt a repaint. losing performance if we do
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if (Event.current.type != EventType.Repaint)
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{
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return;
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}
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using (IBrushRenderPreviewUnderCursor brushRender = new BrushRenderPreviewUIGroupUnderCursor(commonUI, "SmudgeHeight", editContext.brushTexture))
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{
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if (brushRender.CalculateBrushTransform(out BrushTransform brushXform))
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{
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PaintContext ctx = brushRender.AcquireHeightmap(false, brushXform.GetBrushXYBounds(), 1);
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Material previewMaterial = Utility.GetDefaultPreviewMaterial(commonUI.hasEnabledFilters);
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var texelCtx = Utility.CollectTexelValidity(ctx.originTerrain, brushXform.GetBrushXYBounds());
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Utility.SetupMaterialForPaintingWithTexelValidityContext(ctx, texelCtx, brushXform, previewMaterial);
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var filterRT = RTUtils.GetTempHandle(ctx.sourceRenderTexture.width, ctx.sourceRenderTexture.height,
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0, FilterUtility.defaultFormat);
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Utility.GenerateAndSetFilterRT(commonUI, ctx.sourceRenderTexture, filterRT, previewMaterial);
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TerrainPaintUtilityEditor.DrawBrushPreview(ctx, TerrainBrushPreviewMode.SourceRenderTexture,
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editContext.brushTexture, brushXform, previewMaterial, 0);
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texelCtx.Cleanup();
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RTUtils.Release(filterRT);
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}
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}
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}
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private bool m_ShowControls = true;
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public override void OnInspectorGUI(Terrain terrain, IOnInspectorGUI editContext)
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{
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EditorGUI.BeginChangeCheck();
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commonUI.OnInspectorGUI(terrain, editContext);
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m_ShowControls = TerrainToolGUIHelper.DrawHeaderFoldoutForBrush(Styles.controls, m_ShowControls, Reset);
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if (m_ShowControls)
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{
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EditorGUILayout.BeginHorizontal("GroupBox");
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{
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EditorGUILayout.PrefixLabel(Styles.affect);
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m_AffectMaterials = GUILayout.Toggle(m_AffectMaterials, Styles.alphamap, GUI.skin.button);
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m_AffectHeight = GUILayout.Toggle(m_AffectHeight, Styles.heightmap, GUI.skin.button);
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}
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EditorGUILayout.EndHorizontal();
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}
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if (EditorGUI.EndChangeCheck())
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{
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SaveSetting();
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Save(true);
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TerrainToolsAnalytics.OnParameterChange();
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}
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}
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private void Reset()
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{
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m_AffectMaterials = true;
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m_AffectHeight = true;
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}
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public override bool OnPaint(Terrain terrain, IOnPaint editContext)
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{
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commonUI.OnPaint(terrain, editContext);
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if (!commonUI.allowPaint)
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{ return true; }
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if (Event.current.type == EventType.MouseDown)
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{
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m_PrevBrushPos = editContext.uv;
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return false;
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}
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if (Event.current.type == EventType.MouseDrag && m_PreviousEvent == EventType.MouseDrag)
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{
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Vector2 uv = editContext.uv;
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if (commonUI.ScatterBrushStamp(ref terrain, ref uv))
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{
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Material mat = GetPaintMaterial();
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Vector2 smudgeDir = uv - m_PrevBrushPos;
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BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, uv, commonUI.brushSize, commonUI.brushRotation);
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Vector4 brushParams = new Vector4(commonUI.brushStrength, smudgeDir.x, smudgeDir.y, 0);
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mat.SetTexture("_BrushTex", editContext.brushTexture);
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mat.SetVector("_BrushParams", brushParams);
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//smudge splat map
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if (m_AffectMaterials)
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{
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for (int i = 0; i < terrain.terrainData.terrainLayers.Length; i++)
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{
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TerrainLayer layer = terrain.terrainData.terrainLayers[i];
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if (layer == null)
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continue; // nothing to paint if the layer is NULL
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PaintContext sampleContext = TerrainPaintUtility.BeginPaintTexture(terrain, brushXform.GetBrushXYBounds(), layer);
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var brushMask = RTUtils.GetTempHandle(sampleContext.sourceRenderTexture.width, sampleContext.sourceRenderTexture.height, 0, FilterUtility.defaultFormat);
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Utility.GenerateAndSetFilterRT(commonUI, sampleContext.sourceRenderTexture, brushMask, mat);
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TerrainPaintUtility.SetupTerrainToolMaterialProperties(sampleContext, brushXform, mat);
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Graphics.Blit(sampleContext.sourceRenderTexture, sampleContext.destinationRenderTexture, mat, 0);
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TerrainPaintUtility.EndPaintTexture(sampleContext, "Terrain Paint - Smudge Brush (Texture)");
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RTUtils.Release(brushMask);
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}
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}
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//smudge the height map
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if (m_AffectHeight)
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{
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PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds(), 1);
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var brushMask = RTUtils.GetTempHandle(paintContext.sourceRenderTexture.width, paintContext.sourceRenderTexture.height, 0, FilterUtility.defaultFormat);
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Utility.GenerateAndSetFilterRT(commonUI, paintContext.sourceRenderTexture, brushMask, mat);
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TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
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Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, 0);
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TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Paint - Smudge Brush (Height)");
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RTUtils.Release(brushMask);
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}
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m_PrevBrushPos = uv;
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}
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}
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m_PreviousEvent = Event.current.type;
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return false;
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}
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private static class Styles
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{
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public static readonly GUIContent controls = EditorGUIUtility.TrTextContent("Smudge Height Controls");
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public static readonly GUIContent alphamap = EditorGUIUtility.TrTextContent("Materials");
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public static readonly GUIContent heightmap = EditorGUIUtility.TrTextContent("Heightmap");
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public static readonly GUIContent affect = EditorGUIUtility.TrTextContent("Targets", "Determines which textures the smudge operations will be applied to");
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}
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private void SaveSetting()
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{
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EditorPrefs.SetBool("Unity.TerrainTools.Smudge.Heightmap", m_AffectHeight);
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EditorPrefs.SetBool("Unity.TerrainTools.Smudge.Materials", m_AffectMaterials);
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}
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private void LoadSettings()
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{
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m_AffectHeight = EditorPrefs.GetBool("Unity.TerrainTools.Smudge.Heightmap", true);
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m_AffectMaterials = EditorPrefs.GetBool("Unity.TerrainTools.Smudge.Materials", true);
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}
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// Analytics Setup
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private TerrainToolsAnalytics.IBrushParameter[] UpdateAnalyticParameters() => new TerrainToolsAnalytics.IBrushParameter[]{
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new TerrainToolsAnalytics.BrushParameter<bool>{Name = Styles.heightmap.text, Value = m_AffectHeight},
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new TerrainToolsAnalytics.BrushParameter<bool>{Name = Styles.alphamap.text, Value = m_AffectMaterials},
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};
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}
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}
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