278 lines
12 KiB
C#
278 lines
12 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 PinchHeightTool : TerrainPaintTool<PinchHeightTool>
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{
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#if UNITY_2019_1_OR_NEWER
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[Shortcut("Terrain/Select Pinch Tool", typeof(TerrainToolShortcutContext))] // tells shortcut manager what to call the shortcut and what to pass as args
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static void SelectShortcut(ShortcutArguments args)
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{
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TerrainToolShortcutContext context = (TerrainToolShortcutContext)args.context; // gets interface to modify state of TerrainTools
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context.SelectPaintTool<PinchHeightTool>(); // set active tool
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TerrainToolsAnalytics.OnShortcutKeyRelease("Select Pinch Tool");
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}
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#endif
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private bool m_ShowControls = true;
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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("PinchTool");
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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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[SerializeField]
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float m_PinchAmount = 5.0f;
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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/PinchHeight"));
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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/Pinch";
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}
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public override string GetDescription()
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{
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return "Pulls or pushes Terrain features and layers from the center of the Brush.\n\n" +
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"Hold Ctrl + Click to push 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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Texture brushTexture = editContext.brushTexture;
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using (IBrushRenderPreviewUnderCursor brushRender = new BrushRenderPreviewUIGroupUnderCursor(commonUI, "PinchHeight", 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,
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ctx.sourceRenderTexture.height, 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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// draw result preview
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{
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float finalPinchAmount = m_PinchAmount * 0.005f; //scale to a reasonable value and negate so default mode is clockwise
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if (Event.current.shift)
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{
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finalPinchAmount *= -1.0f;
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}
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ApplyBrushInternal(brushRender, ctx, commonUI.brushStrength, finalPinchAmount, brushTexture, brushXform);
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// restore old render target
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RenderTexture.active = ctx.oldRenderTexture;
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previewMaterial.SetTexture("_HeightmapOrig", ctx.sourceRenderTexture);
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TerrainPaintUtilityEditor.DrawBrushPreview(ctx, TerrainBrushPreviewMode.DestinationRenderTexture,
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editContext.brushTexture, brushXform, previewMaterial, 1);
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}
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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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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.BeginVertical("GroupBox");
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{
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EditorGUILayout.BeginHorizontal();
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{
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EditorGUILayout.PrefixLabel(Styles.targets);
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m_AffectMaterials = GUILayout.Toggle(m_AffectMaterials, Styles.materials, 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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m_PinchAmount = EditorGUILayout.Slider(Styles.pinchAmount, m_PinchAmount, -100.0f, 100.0f);
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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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}
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private void Reset()
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{
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m_PinchAmount = 5.0f;
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m_AffectMaterials = true;
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m_AffectHeight = true;
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}
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public void ApplyBrushInternal(IPaintContextRender renderer, PaintContext paintContext, float brushStrength, float pinchAmount, Texture brushTexture, BrushTransform brushXform)
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{
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Material mat = GetPaintMaterial();
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pinchAmount = Event.current.control ? -pinchAmount : pinchAmount; //TODO - use shortcut system once it supports binding modifiers
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Vector4 brushParams = new Vector4(brushStrength, 0.0f, pinchAmount, Mathf.Deg2Rad * commonUI.brushRotation);
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mat.SetTexture("_BrushTex", brushTexture);
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mat.SetVector("_BrushParams", brushParams);
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renderer.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
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renderer.RenderBrush(paintContext, mat, 0);
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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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using (IBrushRenderUnderCursor brushRender = new BrushRenderUIGroupUnderCursor(commonUI, "PinchHeight", editContext.brushTexture))
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{
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if (brushRender.CalculateBrushTransform(out BrushTransform brushXform))
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{
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float finalPinchAmount = m_PinchAmount * 0.005f; //scale to a reasonable value and negate so default mode is clockwise
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if (Event.current.shift)
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{
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finalPinchAmount *= -1.0f;
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}
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Material mat = GetPaintMaterial();
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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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PaintContext paintContext = brushRender.AcquireTexture(true, brushXform.GetBrushXYBounds(), layer);
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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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paintContext.sourceRenderTexture.filterMode = FilterMode.Bilinear;
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brushRender.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
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brushRender.RenderBrush(paintContext, mat, 0);
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brushRender.Release(paintContext);
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RTUtils.Release(brushMask);
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}
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}
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if (m_AffectHeight)
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{
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PaintContext paintContext = brushRender.AcquireHeightmap(true, 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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paintContext.sourceRenderTexture.filterMode = FilterMode.Bilinear;
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ApplyBrushInternal(brushRender, paintContext, commonUI.brushStrength, finalPinchAmount, editContext.brushTexture, brushXform);
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brushRender.Release(paintContext);
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RTUtils.Release(brushMask);
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}
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}
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}
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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("Pinch Height Controls");
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public static readonly GUIContent pinchAmount = EditorGUIUtility.TrTextContent("Pinch Amount", "Negative values bulge, positive values pinch");
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public static readonly GUIContent targets = EditorGUIUtility.TrTextContent("Targets", "Determines which textures the pinch operations target");
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public static readonly GUIContent materials = EditorGUIUtility.TrTextContent("Materials");
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public static readonly GUIContent heightmap = EditorGUIUtility.TrTextContent("Heightmap");
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}
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private void SaveSetting()
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{
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EditorPrefs.SetFloat("Unity.TerrainTools.Pinch.PinchAmount", m_PinchAmount);
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EditorPrefs.SetBool("Unity.TerrainTools.Pinch.Heightmap", m_AffectHeight);
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EditorPrefs.SetBool("Unity.TerrainTools.Pinch.Materials", m_AffectMaterials);
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}
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private void LoadSettings()
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{
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m_PinchAmount = EditorPrefs.GetFloat("Unity.TerrainTools.Pinch.PinchAmount", 5.0f);
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m_AffectHeight = EditorPrefs.GetBool("Unity.TerrainTools.Pinch.Heightmap", true);
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m_AffectMaterials = EditorPrefs.GetBool("Unity.TerrainTools.Pinch.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<float>{Name = Styles.pinchAmount.text, Value = m_PinchAmount},
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new TerrainToolsAnalytics.BrushParameter<bool>{Name = Styles.materials.text, Value = m_AffectHeight},
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new TerrainToolsAnalytics.BrushParameter<bool>{Name = Styles.heightmap.text, Value = m_AffectMaterials},
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};
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}
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}
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