259 lines
10 KiB
C#
259 lines
10 KiB
C#
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using UnityEngine;
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using UnityEngine.Experimental.TerrainAPI;
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using UnityEditor.ShortcutManagement;
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namespace UnityEditor.Experimental.TerrainAPI
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{
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//[FilePathAttribute("Library/TerrainTools/Stamp", FilePathAttribute.Location.ProjectFolder)]
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public class StampTool : TerrainPaintTool<StampTool>
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{
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#if UNITY_2019_1_OR_NEWER
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[Shortcut("Terrain/Select Stamp Tool", typeof(TerrainToolShortcutContext))]
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static void SelectShortcut(ShortcutArguments args) {
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TerrainToolShortcutContext context = (TerrainToolShortcutContext)args.context;
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context.SelectPaintTool<StampTool>();
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TerrainToolsAnalytics.OnShortcutKeyRelease("Select Stamp Tool");
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}
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#endif
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class Styles
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{
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public readonly GUIContent controls = EditorGUIUtility.TrTextContent("Stamp Tool Controls");
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public readonly GUIContent description = EditorGUIUtility.TrTextContent("Left click to stamp the brush onto the terrain.\n\nHold control and mousewheel to adjust height.");
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public readonly GUIContent height = EditorGUIUtility.TrTextContent("Stamp Height", "You can set the Stamp Height manually or you can hold control and mouse wheel on the terrain to adjust it.");
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public readonly GUIContent down = EditorGUIUtility.TrTextContent("Subtract", "Subtract the stamp from the terrain.");
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public readonly GUIContent maxadd = EditorGUIUtility.TrTextContent("Max <--> Add", "Blend between adding the heights, and taking the maximum.");
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}
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private static Styles m_styles;
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private Styles GetStyles()
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{
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if (m_styles == null)
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{
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m_styles = new Styles();
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}
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return m_styles;
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}
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[System.Serializable]
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class StampToolSerializedProperties
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{
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public float m_StampHeight;
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public bool stampDown;
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public float m_MaxBlendAdd;
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public void SetDefaults()
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{
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m_StampHeight = 100.0f;
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stampDown = false;
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m_MaxBlendAdd = 0.0f;
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}
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}
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StampToolSerializedProperties stampToolProperties = new StampToolSerializedProperties();
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[SerializeField]
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IBrushUIGroup m_commonUI;
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private IBrushUIGroup commonUI
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{
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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("StampTool", UpdateAnalyticParameters);
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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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public override string GetName()
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{
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return "Stamp Terrain";
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}
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public override string GetDesc()
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{
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return "Left click to stamp the brush onto the terrain.\n\nHold control and mousewheel to adjust height.";
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}
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private void ApplyBrushInternal(IPaintContextRender renderer, PaintContext paintContext, float brushStrength, Texture brushTexture, BrushTransform brushXform, Terrain terrain)
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{
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Material mat = TerrainPaintUtility.GetBuiltinPaintMaterial();
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float height = stampToolProperties.m_StampHeight / (terrain.terrainData.size.y * 2.0f);
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if(stampToolProperties.stampDown)
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{
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height = -height;
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}
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Vector4 brushParams = new Vector4(brushStrength, 0.0f, height, stampToolProperties.m_MaxBlendAdd);
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mat.SetTexture("_BrushTex", brushTexture);
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mat.SetVector("_BrushParams", brushParams);
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var brushMask = RTUtils.GetTempHandle(paintContext.sourceRenderTexture.width, paintContext.sourceRenderTexture.height, 0, FilterUtility.defaultFormat);
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Utility.SetFilterRT(commonUI, paintContext.sourceRenderTexture, brushMask, mat);
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renderer.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
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renderer.RenderBrush(paintContext, mat, (int)TerrainPaintUtility.BuiltinPaintMaterialPasses.StampHeight);
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RTUtils.Release(brushMask);
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}
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public override void OnEnterToolMode() {
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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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base.OnExitToolMode();
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commonUI.OnExitToolMode();
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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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// ignore mouse drags
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if(Event.current.type != EventType.MouseDrag && !Event.current.shift)
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{
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Texture brushTexture = editContext.brushTexture;
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using(IBrushRenderUnderCursor brushRender = new BrushRenderUIGroupUnderCursor(commonUI, "Stamp", brushTexture))
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{
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if(brushRender.CalculateBrushTransform(out BrushTransform brushXform))
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{
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PaintContext paintContext = brushRender.AcquireHeightmap(true, brushXform.GetBrushXYBounds());
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ApplyBrushInternal(brushRender, paintContext, commonUI.brushStrength, brushTexture, brushXform, terrain);
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}
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}
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}
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return true;
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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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if(!editContext.hitValidTerrain && !commonUI.isInUse)
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{
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return;
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}
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commonUI.OnSceneGUI(terrain, editContext);
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Event evt = Event.current;
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if (evt.control && (evt.type == EventType.ScrollWheel))
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{
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const float k_mouseWheelToHeightRatio = -0.0004f;
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stampToolProperties.m_StampHeight += Event.current.delta.y * k_mouseWheelToHeightRatio * editContext.raycastHit.distance;
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evt.Use();
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editContext.Repaint();
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SaveSetting();
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}
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// We're only doing painting operations, early out if it's not a repaint
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if (evt.type != EventType.Repaint)
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{
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return;
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}
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if (commonUI.isRaycastHitUnderCursorValid)
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{
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Texture brushTexture = editContext.brushTexture;
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using(IBrushRenderPreviewUnderCursor brushRender = new BrushRenderPreviewUIGroupUnderCursor(commonUI, "Stamp", brushTexture))
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{
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if(brushRender.CalculateBrushTransform(out BrushTransform brushXform))
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{
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PaintContext paintContext = brushRender.AcquireHeightmap(false, brushXform.GetBrushXYBounds(), 1);
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Material material = TerrainPaintUtilityEditor.GetDefaultBrushPreviewMaterial();
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brushRender.RenderBrushPreview(paintContext, TerrainPaintUtilityEditor.BrushPreview.SourceRenderTexture, brushXform, material, 0);
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// draw result preview
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{
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ApplyBrushInternal(brushRender, paintContext, commonUI.brushStrength, brushTexture, brushXform, terrain);
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// restore old render target
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RenderTexture.active = paintContext.oldRenderTexture;
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material.SetTexture("_HeightmapOrig", paintContext.sourceRenderTexture);
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brushRender.RenderBrushPreview(paintContext, TerrainPaintUtilityEditor.BrushPreview.DestinationRenderTexture, brushXform, material, 1);
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}
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TerrainPaintUtility.ReleaseContextResources(paintContext);
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}
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}
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}
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}
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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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Styles styles = GetStyles();
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commonUI.OnInspectorGUI(terrain, editContext);
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m_ShowControls = TerrainToolGUIHelper.DrawHeaderFoldoutForBrush(styles.controls, m_ShowControls, stampToolProperties.SetDefaults);
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if(!m_ShowControls)
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{
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return;
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}
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EditorGUI.BeginChangeCheck();
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{
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EditorGUILayout.BeginVertical("GroupBox");
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{
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float height = Mathf.Abs(stampToolProperties.m_StampHeight);
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height = EditorGUILayout.Slider(styles.height, height, 0, terrain.terrainData.size.y);
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stampToolProperties.stampDown = EditorGUILayout.Toggle(styles.down, stampToolProperties.stampDown);
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stampToolProperties.m_StampHeight = height;
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stampToolProperties.m_MaxBlendAdd = EditorGUILayout.Slider(styles.maxadd, stampToolProperties.m_MaxBlendAdd, 0.0f, 1.0f);
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}
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EditorGUILayout.EndVertical();
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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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base.OnInspectorGUI(terrain, editContext);
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}
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private void SaveSetting()
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{
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string stampToolData = JsonUtility.ToJson(stampToolProperties);
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EditorPrefs.SetString("Unity.TerrainTools.Stamp", stampToolData);
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}
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private void LoadSettings()
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{
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string stampToolData = EditorPrefs.GetString("Unity.TerrainTools.Stamp");
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stampToolProperties.SetDefaults();
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JsonUtility.FromJsonOverwrite(stampToolData, stampToolProperties);
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}
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#region Analytics
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private TerrainToolsAnalytics.IBrushParameter[] UpdateAnalyticParameters() => new TerrainToolsAnalytics.IBrushParameter[]{
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new TerrainToolsAnalytics.BrushParameter<float>{Name = GetStyles().height.text, Value = stampToolProperties.m_StampHeight},
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new TerrainToolsAnalytics.BrushParameter<bool>{Name = GetStyles().down.text, Value = stampToolProperties.stampDown},
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new TerrainToolsAnalytics.BrushParameter<float>{Name = GetStyles().maxadd.text, Value = stampToolProperties.m_MaxBlendAdd},
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};
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#endregion
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}
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}
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