143 lines
5.5 KiB
C#
143 lines
5.5 KiB
C#
using UnityEngine;
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using UnityEngine.Experimental.TerrainAPI;
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using UnityEditor.ShortcutManagement;
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#if UNITY_2019_3_OR_NEWER
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namespace UnityEditor.Experimental.TerrainAPI
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{
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internal class PaintHolesTool : TerrainPaintTool<PaintHolesTool>
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{
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[Shortcut("Terrain/Select Paint Holes Tool", typeof(TerrainToolShortcutContext), KeyCode.F8)]
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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<PaintHolesTool>();
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TerrainToolsAnalytics.OnShortcutKeyRelease("Select Paint Holes Tool");
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}
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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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m_commonUI = new DefaultBrushUIGroup("PaintHoles");
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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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Material m_PaintHoleMat;
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Material GetPaintHolesMaterial()
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{
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m_PaintHoleMat = null;
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if (m_PaintHoleMat == null)
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{
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m_PaintHoleMat = new Material(Shader.Find("Hidden/TerrainEngine/PaintHeightTool"));
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}
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return m_PaintHoleMat;
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}
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public override string GetName()
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{
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return "Paint Holes";
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}
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public override string GetDesc()
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{
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return "Left click to paint a hole.\n\nHold Control and left click to erase it.";
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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 OnInspectorGUI(Terrain terrain, IOnInspectorGUI editContext)
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{
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commonUI.OnInspectorGUI(terrain, editContext);
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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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// update brush UI group
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commonUI.OnSceneGUI(terrain, editContext);
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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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if (commonUI.isRaycastHitUnderCursorValid)
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{
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using(IBrushRenderPreviewUnderCursor brushRender = new BrushRenderPreviewUIGroupUnderCursor(commonUI, "PaintHoles", 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 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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}
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}
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}
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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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{
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Texture brushTexture = editContext.brushTexture;
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using (IBrushRenderUnderCursor brushRender = new BrushRenderUIGroupUnderCursor(commonUI, "PaintHoles", brushTexture))
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{
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Vector2 halfTexelOffset = new Vector2(0.5f / terrain.terrainData.holesResolution, 0.5f / terrain.terrainData.holesResolution);
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BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv - halfTexelOffset, commonUI.brushSize, commonUI.brushRotation);
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PaintContext paintContext = brushRender.AquireHolesTexture(true, brushXform.GetBrushXYBounds());
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PaintContext paintContextHeight = brushRender.AcquireHeightmap(false, brushXform.GetBrushXYBounds());
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// filter stack
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Material mat = GetPaintHolesMaterial();
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var brushMask = RTUtils.GetTempHandle(paintContextHeight.sourceRenderTexture.width, paintContextHeight.sourceRenderTexture.height, 0, FilterUtility.defaultFormat);
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Utility.SetFilterRT(commonUI, paintContextHeight.sourceRenderTexture, brushMask, mat);
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// hold control key to erase
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float brushStrength = Event.current.control ? commonUI.brushStrength : -commonUI.brushStrength;
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Vector4 brushParams = new Vector4(brushStrength, 0.0f, 0.0f, 0.0f);
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mat.SetTexture("_BrushTex", editContext.brushTexture);
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mat.SetVector("_BrushParams", brushParams);
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brushRender.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);
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brushRender.RenderBrush(paintContext, mat, (int)TerrainPaintUtility.BuiltinPaintMaterialPasses.PaintHoles);
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TerrainPaintUtility.EndPaintHoles(paintContext, "Terrain Paint - Paint Holes");
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RTUtils.Release(brushMask);
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}
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}
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return true;
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}
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}
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}
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#endif
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