204 lines
8.8 KiB
C#
204 lines
8.8 KiB
C#
using System.Collections.Generic;
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using UnityEngine;
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namespace Pinwheel.Griffin.PaintTool
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{
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public class GElevationPainter : IGTexturePainter, IGTexturePainterWithLivePreview
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{
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public string Instruction
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{
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get
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{
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string s = string.Format(
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"Gradually modifying terrain geometry.\n" +
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" - Hold Left Mouse to raise.\n" +
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" - Hold {0} & Left Mouse to lower.\n" +
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" - Hold {1} & Left Mouse to smooth.",
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"Ctrl",
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"Shift");
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return s;
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}
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}
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public string HistoryPrefix
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{
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get
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{
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return "Elevation Painting";
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}
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}
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public List<GTerrainResourceFlag> GetResourceFlagForHistory(GTexturePainterArgs args)
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{
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return GCommon.HeightMapAndFoliageResourceFlags;
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}
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private void SetupTextureGrid(GStylizedTerrain t, Material mat)
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{
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mat.SetTexture("_MainTex_Left",
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t.LeftNeighbor && t.LeftNeighbor.TerrainData ?
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t.LeftNeighbor.TerrainData.Geometry.HeightMap :
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Texture2D.blackTexture);
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mat.SetTexture("_MainTex_TopLeft",
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t.LeftNeighbor && t.LeftNeighbor.TopNeighbor && t.LeftNeighbor.TopNeighbor.TerrainData ?
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t.LeftNeighbor.TopNeighbor.TerrainData.Geometry.HeightMap :
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Texture2D.blackTexture);
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mat.SetTexture("_MainTex_TopLeft",
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t.TopNeighbor && t.TopNeighbor.LeftNeighbor && t.TopNeighbor.LeftNeighbor.TerrainData ?
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t.TopNeighbor.LeftNeighbor.TerrainData.Geometry.HeightMap :
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Texture2D.blackTexture);
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mat.SetTexture("_MainTex_Top",
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t.TopNeighbor && t.TopNeighbor.TerrainData ?
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t.TopNeighbor.TerrainData.Geometry.HeightMap :
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Texture2D.blackTexture);
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mat.SetTexture("_MainTex_TopRight",
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t.RightNeighbor && t.RightNeighbor.TopNeighbor && t.RightNeighbor.TopNeighbor.TerrainData ?
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t.RightNeighbor.TopNeighbor.TerrainData.Geometry.HeightMap :
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Texture2D.blackTexture);
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mat.SetTexture("_MainTex_TopRight",
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t.TopNeighbor && t.TopNeighbor.RightNeighbor && t.TopNeighbor.RightNeighbor.TerrainData ?
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t.TopNeighbor.RightNeighbor.TerrainData.Geometry.HeightMap :
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Texture2D.blackTexture);
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mat.SetTexture("_MainTex_Right",
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t.RightNeighbor && t.RightNeighbor.TerrainData ?
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t.RightNeighbor.TerrainData.Geometry.HeightMap :
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Texture2D.blackTexture);
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mat.SetTexture("_MainTex_BottomRight",
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t.RightNeighbor && t.RightNeighbor.BottomNeighbor && t.RightNeighbor.BottomNeighbor.TerrainData ?
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t.RightNeighbor.BottomNeighbor.TerrainData.Geometry.HeightMap :
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Texture2D.blackTexture);
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mat.SetTexture("_MainTex_BottomRight",
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t.BottomNeighbor && t.BottomNeighbor.RightNeighbor && t.BottomNeighbor.RightNeighbor.TerrainData ?
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t.BottomNeighbor.RightNeighbor.TerrainData.Geometry.HeightMap :
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Texture2D.blackTexture);
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mat.SetTexture("_MainTex_Bottom",
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t.BottomNeighbor && t.BottomNeighbor.TerrainData ?
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t.BottomNeighbor.TerrainData.Geometry.HeightMap :
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Texture2D.blackTexture);
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mat.SetTexture("_MainTex_BottomLeft",
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t.LeftNeighbor && t.LeftNeighbor.BottomNeighbor && t.LeftNeighbor.BottomNeighbor.TerrainData ?
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t.LeftNeighbor.BottomNeighbor.TerrainData.Geometry.HeightMap :
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Texture2D.blackTexture);
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mat.SetTexture("_MainTex_BottomLeft",
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t.BottomNeighbor && t.BottomNeighbor.LeftNeighbor && t.BottomNeighbor.LeftNeighbor.TerrainData ?
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t.BottomNeighbor.LeftNeighbor.TerrainData.Geometry.HeightMap :
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Texture2D.blackTexture);
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}
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public void Paint(GStylizedTerrain terrain, GTexturePainterArgs args)
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{
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if (terrain.TerrainData == null)
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return;
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if (args.MouseEventType == GPainterMouseEventType.Down)
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{
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terrain.ForceLOD(0);
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GRuntimeSettings.Instance.isEditingGeometry = true;
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}
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if (args.MouseEventType == GPainterMouseEventType.Up)
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{
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terrain.ForceLOD(-1);
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GRuntimeSettings.Instance.isEditingGeometry = false;
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terrain.UpdateTreesPosition();
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terrain.UpdateGrassPatches();
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terrain.TerrainData.Foliage.ClearTreeDirtyRegions();
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terrain.TerrainData.Foliage.ClearGrassDirtyRegions();
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return;
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}
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Vector2[] uvCorners = new Vector2[args.WorldPointCorners.Length];
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for (int i = 0; i < uvCorners.Length; ++i)
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{
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uvCorners[i] = terrain.WorldPointToUV(args.WorldPointCorners[i]);
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}
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Rect dirtyRect = GUtilities.GetRectContainsPoints(uvCorners);
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if (!dirtyRect.Overlaps(new Rect(0, 0, 1, 1)))
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return;
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Texture2D bg = terrain.TerrainData.Geometry.HeightMap;
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int heightMapResolution = terrain.TerrainData.Geometry.HeightMapResolution;
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RenderTexture rt = GTerrainTexturePainter.Internal_GetRenderTexture(heightMapResolution);
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GCommon.CopyToRT(bg, rt);
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Material mat = GInternalMaterials.ElevationPainterMaterial;
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mat.SetTexture("_MainTex", bg);
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SetupTextureGrid(terrain, mat);
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mat.SetTexture("_Mask", args.BrushMask);
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mat.SetFloat("_Opacity", Mathf.Pow(args.Opacity, GTerrainTexturePainter.GEOMETRY_OPACITY_EXPONENT));
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if (args.EnableTerrainMask)
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{
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mat.SetTexture("_TerrainMask", terrain.TerrainData.Mask.MaskMapOrDefault);
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}
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else
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{
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mat.SetTexture("_TerrainMask", Texture2D.blackTexture);
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}
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int pass =
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args.ActionType == GPainterActionType.Normal ? 0 :
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args.ActionType == GPainterActionType.Negative ? 1 :
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args.ActionType == GPainterActionType.Alternative ? 2 : 0;
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GCommon.DrawQuad(rt, uvCorners, mat, pass);
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RenderTexture.active = rt;
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terrain.TerrainData.Geometry.HeightMap.ReadPixels(
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new Rect(0, 0, heightMapResolution, heightMapResolution), 0, 0);
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terrain.TerrainData.Geometry.HeightMap.Apply();
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RenderTexture.active = null;
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terrain.TerrainData.Geometry.SetRegionDirty(dirtyRect);
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terrain.TerrainData.Foliage.SetTreeRegionDirty(dirtyRect);
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terrain.TerrainData.Foliage.SetGrassRegionDirty(dirtyRect);
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terrain.TerrainData.SetDirty(GTerrainData.DirtyFlags.Geometry);
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}
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public void Editor_DrawLivePreview(GStylizedTerrain terrain, GTexturePainterArgs args, Camera cam)
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{
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#if UNITY_EDITOR
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Vector2[] uvCorners = new Vector2[args.WorldPointCorners.Length];
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for (int i = 0; i < uvCorners.Length; ++i)
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{
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uvCorners[i] = terrain.WorldPointToUV(args.WorldPointCorners[i]);
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}
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Rect dirtyRect = GUtilities.GetRectContainsPoints(uvCorners);
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if (!dirtyRect.Overlaps(new Rect(0, 0, 1, 1)))
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return;
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Texture2D bg = terrain.TerrainData.Geometry.HeightMap;
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int heightMapResolution = terrain.TerrainData.Geometry.HeightMapResolution;
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RenderTexture rt = GTerrainTexturePainter.Internal_GetRenderTexture(terrain, heightMapResolution);
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GCommon.CopyToRT(bg, rt);
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Material mat = GInternalMaterials.ElevationPainterMaterial;
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mat.SetTexture("_MainTex", bg);
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SetupTextureGrid(terrain, mat);
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mat.SetTexture("_Mask", args.BrushMask);
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mat.SetFloat("_Opacity", Mathf.Pow(args.Opacity, GTerrainTexturePainter.GEOMETRY_OPACITY_EXPONENT));
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if (args.EnableTerrainMask)
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{
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mat.SetTexture("_TerrainMask", terrain.TerrainData.Mask.MaskMapOrDefault);
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}
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else
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{
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mat.SetTexture("_TerrainMask", Texture2D.blackTexture);
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}
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int pass =
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args.ActionType == GPainterActionType.Normal ? 0 :
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args.ActionType == GPainterActionType.Negative ? 1 :
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args.ActionType == GPainterActionType.Alternative ? 2 : 0;
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GCommon.DrawQuad(rt, uvCorners, mat, pass);
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GLivePreviewDrawer.DrawGeometryLivePreview(terrain, cam, rt, dirtyRect);
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#endif
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}
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}
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}
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