697 lines
23 KiB
C#
697 lines
23 KiB
C#
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using System.Collections.Generic;
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using UnityEngine;
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namespace Pinwheel.Griffin.StampTool
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{
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[System.Serializable]
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[ExecuteInEditMode]
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public class GFoliageStamper : MonoBehaviour
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{
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#if UNITY_EDITOR
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[SerializeField]
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private bool editor_ShowLivePreview = true;
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public bool Editor_ShowLivePreview
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{
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get
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{
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return editor_ShowLivePreview;
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}
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set
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{
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editor_ShowLivePreview = value;
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}
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}
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[SerializeField]
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private bool editor_ShowBounds = true;
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public bool Editor_ShowBounds
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{
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get
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{
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return editor_ShowBounds;
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}
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set
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{
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editor_ShowBounds = value;
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}
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}
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#endif
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[SerializeField]
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private bool enableTerrainMask;
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public bool EnableTerrainMask
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{
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get
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{
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return enableTerrainMask;
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}
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set
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{
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enableTerrainMask = value;
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}
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}
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[SerializeField]
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private int groupId;
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public int GroupId
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{
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get
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{
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return groupId;
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}
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set
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{
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groupId = value;
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}
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}
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[SerializeField]
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private Vector3 position;
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public Vector3 Position
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{
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get
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{
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return position;
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}
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set
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{
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position = value;
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transform.position = value;
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}
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}
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[SerializeField]
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private Quaternion rotation;
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public Quaternion Rotation
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{
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get
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{
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return rotation;
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}
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set
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{
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rotation = value;
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transform.rotation = value;
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}
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}
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[SerializeField]
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private Vector3 scale;
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public Vector3 Scale
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{
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get
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{
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return scale;
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}
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set
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{
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scale = value;
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transform.localScale = value;
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}
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}
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[SerializeField]
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private Texture2D mask;
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public Texture2D Mask
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{
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get
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{
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return mask;
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}
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set
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{
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mask = value;
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}
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}
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[SerializeField]
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private AnimationCurve falloff;
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public AnimationCurve Falloff
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{
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get
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{
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return falloff;
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}
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set
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{
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falloff = value;
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}
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}
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[SerializeField]
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private List<GFoliageStampLayer> layers;
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public List<GFoliageStampLayer> Layers
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{
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get
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{
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if (layers == null)
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{
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layers = new List<GFoliageStampLayer>();
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}
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return layers;
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}
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set
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{
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layers = value;
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}
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}
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[SerializeField]
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private int maskResolution;
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public int MaskResolution
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{
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get
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{
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return maskResolution;
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}
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set
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{
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maskResolution = Mathf.Clamp(Mathf.ClosestPowerOfTwo(value), GCommon.TEXTURE_SIZE_MIN, GCommon.TEXTURE_SIZE_MAX);
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}
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}
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public Rect Rect
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{
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get
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{
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Vector3[] quad = new Vector3[4];
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GetQuad(quad);
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Rect r = GUtilities.GetRectContainsPoints(quad);
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return r;
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}
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}
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private Texture2D falloffTexture;
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private Vector3[] worldPoints = new Vector3[4];
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private Vector2[] uvPoints = new Vector2[4];
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private Dictionary<string, RenderTexture> tempRt;
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private Dictionary<string, RenderTexture> TempRt
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{
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get
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{
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if (tempRt == null)
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{
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tempRt = new Dictionary<string, RenderTexture>();
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}
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return tempRt;
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}
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}
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private void Reset()
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{
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position = Vector3.zero;
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rotation = Quaternion.identity;
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scale = Vector3.one * 100;
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mask = null;
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falloff = AnimationCurve.EaseInOut(0, 1, 1, 0);
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maskResolution = 1024;
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}
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private void OnDisable()
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{
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ReleaseResources();
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}
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private void OnDestroy()
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{
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ReleaseResources();
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}
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private void ReleaseResources()
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{
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foreach (RenderTexture rt in TempRt.Values)
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{
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if (rt != null)
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{
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rt.Release();
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GUtilities.DestroyObject(rt);
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}
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}
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}
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public void Apply()
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{
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if (falloffTexture != null)
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Object.DestroyImmediate(falloffTexture);
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Internal_UpdateFalloffTexture();
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Internal_UpdateLayerTransitionTextures();
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IEnumerator<GStylizedTerrain> terrains = GStylizedTerrain.ActiveTerrains.GetEnumerator();
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try
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{
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while (terrains.MoveNext())
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{
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GStylizedTerrain t = terrains.Current;
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if (groupId < 0 ||
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(groupId >= 0 && groupId == t.GroupId))
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{
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Apply(t);
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}
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}
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}
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catch (GProgressCancelledException)
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{
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Debug.Log("Stamp process canceled, result may be incorrect. Use History to clean up!");
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#if UNITY_EDITOR
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GCommonGUI.ClearProgressBar();
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#endif
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}
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}
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private void Apply(GStylizedTerrain t)
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{
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if (t.TerrainData == null)
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return;
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if (Layers.Count == 0)
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return;
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GetQuad(worldPoints);
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GetUvPoints(t, worldPoints, uvPoints);
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Rect dirtyRect = GUtilities.GetRectContainsPoints(uvPoints);
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if (!dirtyRect.Overlaps(new Rect(0, 0, 1, 1)))
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return;
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RenderTexture[] brushes = new RenderTexture[Layers.Count];
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for (int i = 0; i < Layers.Count; ++i)
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{
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brushes[i] = GetRenderTexture("brush" + i.ToString());
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}
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Internal_RenderBrushes(brushes, t, uvPoints);
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for (int i = 0; i < Layers.Count; ++i)
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{
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StampLayer(t, brushes[i], i);
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}
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bool willUpdateTree = Layers.Exists(l => l.StampTrees && l.TreeInstanceCount > 0);
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bool willUpdateGrass = Layers.Exists(l => l.StampGrasses && l.TreeInstanceCount > 0);
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#if UNITY_EDITOR
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string title = "Stamping on " + t.name;
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string info = "Finishing up...";
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GCommonGUI.ProgressBar(title, info, 1);
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#endif
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try
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{
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t.TerrainData.Foliage.SetTreeRegionDirty(dirtyRect);
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t.TerrainData.Foliage.SetGrassRegionDirty(dirtyRect);
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if (willUpdateTree)
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t.UpdateTreesPosition();
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if (willUpdateGrass)
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t.UpdateGrassPatches(-1, true);
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t.TerrainData.Foliage.ClearTreeDirtyRegions();
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t.TerrainData.Foliage.ClearGrassDirtyRegions();
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}
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catch (System.Exception e)
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{
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Debug.LogError(e);
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}
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#if UNITY_EDITOR
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GCommonGUI.ClearProgressBar();
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#endif
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t.TerrainData.SetDirty(GTerrainData.DirtyFlags.Foliage);
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}
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private void StampLayer(GStylizedTerrain t, RenderTexture brush, int layerIndex)
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{
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GFoliageStampLayer layer = Layers[layerIndex];
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if (layer.Ignore)
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return;
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if (layer.TreeInstanceCount == 0)
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return;
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Texture2D tex = new Texture2D(brush.width, brush.height, TextureFormat.ARGB32, false, true);
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GCommon.CopyFromRT(tex, brush);
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Color[] maskData = tex.GetPixels();
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if (layer.StampTrees &&
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layer.TreeIndices.Count > 0 &&
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t.TerrainData.Foliage.Trees != null)
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{
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SpawnTreeOnTerrain(t, maskData, layerIndex);
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}
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if (layer.StampGrasses &&
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layer.GrassIndices.Count > 0 &&
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t.TerrainData.Foliage.Grasses != null)
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{
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SpawnGrassOnTerrain(t, maskData, layerIndex);
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}
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}
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private void SpawnTreeOnTerrain(GStylizedTerrain t, Color[] maskData, int layerIndex)
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{
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GFoliageStampLayer layer = Layers[layerIndex];
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Vector3 centerPos = Vector3.zero;
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Vector3 samplePos = Vector3.zero;
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Vector2 uv = Vector2.zero;
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float maskValue = 0;
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Vector3 terrainSize = new Vector3(
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t.TerrainData.Geometry.Width,
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t.TerrainData.Geometry.Height,
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t.TerrainData.Geometry.Length);
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Vector3 scale = new Vector3(
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GUtilities.InverseLerpUnclamped(0, terrainSize.x, Scale.x),
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1,
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GUtilities.InverseLerpUnclamped(0, terrainSize.z, Scale.z));
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Matrix4x4 matrix = Matrix4x4.TRS(
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t.WorldPointToNormalized(Position),
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Rotation,
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scale);
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int treeIndex = -1;
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int instanceCount = 0;
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int attempt = 0;
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int maxAttempt = layer.TreeInstanceCount * 100;
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#if UNITY_EDITOR
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string title = "Stamping on " + t.name;
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string info = string.Format("Layer: {0}", !string.IsNullOrEmpty(layer.Name) ? layer.Name : layerIndex.ToString());
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int currentPercent = 0;
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int attemptPercent = 0;
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int instancePercent = 0;
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GCommonGUI.CancelableProgressBar(title, info, 0);
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#endif
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int prototypeCount = t.TerrainData.Foliage.Trees.Prototypes.Count;
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List<GTreeInstance> newInstances = new List<GTreeInstance>();
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while (instanceCount < layer.TreeInstanceCount && attempt <= maxAttempt)
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{
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attempt += 1;
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#if UNITY_EDITOR
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attemptPercent = (int)(attempt * 100.0f / maxAttempt);
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instancePercent = (int)(instanceCount * 100.0f / layer.TreeInstanceCount);
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if (currentPercent != Mathf.Max(attemptPercent, instancePercent))
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{
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currentPercent = Mathf.Max(attemptPercent, instancePercent);
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GCommonGUI.CancelableProgressBar(title, string.Format("{0} ... {1}%", info, currentPercent), currentPercent / 100.0f);
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}
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#endif
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treeIndex = layer.TreeIndices[Random.Range(0, layer.TreeIndices.Count)];
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if (treeIndex < 0 || treeIndex >= prototypeCount)
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continue;
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centerPos.Set(Random.value - 0.5f, 0, Random.value - 0.5f);
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samplePos = matrix.MultiplyPoint(centerPos);
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if (samplePos.x < 0 || samplePos.x > 1 ||
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samplePos.z < 0 || samplePos.z > 1)
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continue;
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uv.Set(samplePos.x, samplePos.z);
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maskValue = GUtilities.GetColorBilinear(maskData, MaskResolution, MaskResolution, uv).r;
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if (Random.value > maskValue)
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continue;
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GTreeInstance tree = GTreeInstance.Create(treeIndex);
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tree.Position = new Vector3(samplePos.x, 0, samplePos.z);
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tree.Rotation = Quaternion.Euler(0, Random.Range(layer.MinRotation, layer.MaxRotation), 0);
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tree.Scale = Vector3.Lerp(layer.MinScale, layer.MaxScale, Random.value);
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newInstances.Add(tree);
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instanceCount += 1;
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}
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t.TerrainData.Foliage.AddTreeInstances(newInstances);
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|
||
|
|
#if UNITY_EDITOR
|
||
|
|
GCommonGUI.ClearProgressBar();
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
private void SpawnGrassOnTerrain(GStylizedTerrain t, Color[] maskData, int layerIndex)
|
||
|
|
{
|
||
|
|
GFoliageStampLayer layer = Layers[layerIndex];
|
||
|
|
Vector3 centerPos = Vector3.zero;
|
||
|
|
Vector3 samplePos = Vector3.zero;
|
||
|
|
Vector2 uv = Vector2.zero;
|
||
|
|
float maskValue = 0;
|
||
|
|
Vector3 terrainSize = new Vector3(
|
||
|
|
t.TerrainData.Geometry.Width,
|
||
|
|
t.TerrainData.Geometry.Height,
|
||
|
|
t.TerrainData.Geometry.Length);
|
||
|
|
Vector3 scale = new Vector3(
|
||
|
|
GUtilities.InverseLerpUnclamped(0, terrainSize.x, Scale.x),
|
||
|
|
1,
|
||
|
|
GUtilities.InverseLerpUnclamped(0, terrainSize.z, Scale.z));
|
||
|
|
Matrix4x4 matrix = Matrix4x4.TRS(
|
||
|
|
t.WorldPointToNormalized(Position),
|
||
|
|
Rotation,
|
||
|
|
scale);
|
||
|
|
|
||
|
|
int grassIndex = -1;
|
||
|
|
int instanceCount = 0;
|
||
|
|
int attempt = 0;
|
||
|
|
int maxAttempt = layer.GrassInstanceCount * 100;
|
||
|
|
List<GGrassInstance> grasses = new List<GGrassInstance>();
|
||
|
|
|
||
|
|
#if UNITY_EDITOR
|
||
|
|
string title = "Stamping on " + t.name;
|
||
|
|
string info = string.Format("Layer: {0}", !string.IsNullOrEmpty(layer.Name) ? layer.Name : layerIndex.ToString());
|
||
|
|
int currentPercent = 0;
|
||
|
|
int attemptPercent = 0;
|
||
|
|
int instancePercent = 0;
|
||
|
|
GCommonGUI.CancelableProgressBar(title, info, 0);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
int prototypeCount = t.TerrainData.Foliage.Grasses.Prototypes.Count;
|
||
|
|
while (instanceCount < layer.GrassInstanceCount && attempt <= maxAttempt)
|
||
|
|
{
|
||
|
|
attempt += 1;
|
||
|
|
|
||
|
|
#if UNITY_EDITOR
|
||
|
|
attemptPercent = (int)(attempt * 100.0f / maxAttempt);
|
||
|
|
instancePercent = (int)(instanceCount * 100.0f / layer.GrassInstanceCount);
|
||
|
|
if (currentPercent != Mathf.Max(attemptPercent, instancePercent))
|
||
|
|
{
|
||
|
|
currentPercent = Mathf.Max(attemptPercent, instancePercent);
|
||
|
|
GCommonGUI.CancelableProgressBar(title, string.Format("{0} ... {1}%", info, currentPercent), currentPercent / 100.0f);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
grassIndex = layer.GrassIndices[Random.Range(0, layer.GrassIndices.Count)];
|
||
|
|
if (grassIndex < 0 || grassIndex >= prototypeCount)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
centerPos.Set(Random.value - 0.5f, 0, Random.value - 0.5f);
|
||
|
|
samplePos = matrix.MultiplyPoint(centerPos);
|
||
|
|
if (samplePos.x < 0 || samplePos.x > 1 ||
|
||
|
|
samplePos.z < 0 || samplePos.z > 1)
|
||
|
|
continue;
|
||
|
|
uv.Set(samplePos.x, samplePos.z);
|
||
|
|
maskValue = GUtilities.GetColorBilinear(maskData, MaskResolution, MaskResolution, uv).r;
|
||
|
|
if (Random.value > maskValue)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
GGrassInstance grass = GGrassInstance.Create(grassIndex);
|
||
|
|
grass.Position = new Vector3(samplePos.x, 0, samplePos.z);
|
||
|
|
grass.Rotation = Quaternion.Euler(0, Random.Range(layer.MinRotation, layer.MaxRotation), 0);
|
||
|
|
grass.Scale = Vector3.Lerp(layer.MinScale, layer.MaxScale, Random.value);
|
||
|
|
|
||
|
|
grasses.Add(grass);
|
||
|
|
instanceCount += 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
t.TerrainData.Foliage.AddGrassInstances(grasses);
|
||
|
|
|
||
|
|
#if UNITY_EDITOR
|
||
|
|
GCommonGUI.ClearProgressBar();
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
public void Internal_RenderBrushes(RenderTexture[] brushes, GStylizedTerrain t, Vector2[] uvPoints)
|
||
|
|
{
|
||
|
|
for (int i = 0; i < brushes.Length; ++i)
|
||
|
|
{
|
||
|
|
GStampLayerMaskRenderer.Render(
|
||
|
|
brushes[i],
|
||
|
|
Layers[i],
|
||
|
|
t,
|
||
|
|
Matrix4x4.TRS(Position, Rotation, Scale),
|
||
|
|
Mask,
|
||
|
|
falloffTexture,
|
||
|
|
uvPoints,
|
||
|
|
EnableTerrainMask);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void Internal_UpdateFalloffTexture()
|
||
|
|
{
|
||
|
|
if (falloffTexture != null)
|
||
|
|
GUtilities.DestroyObject(falloffTexture);
|
||
|
|
falloffTexture = GCommon.CreateTextureFromCurve(Falloff, 256, 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
public void Internal_UpdateLayerTransitionTextures()
|
||
|
|
{
|
||
|
|
for (int i = 0; i < Layers.Count; ++i)
|
||
|
|
{
|
||
|
|
Layers[i].UpdateCurveTextures();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public Vector3[] GetQuad()
|
||
|
|
{
|
||
|
|
Matrix4x4 matrix = Matrix4x4.TRS(Position, Rotation, Scale);
|
||
|
|
Vector3[] quad = new Vector3[4]
|
||
|
|
{
|
||
|
|
matrix.MultiplyPoint(new Vector3(-0.5f, 0, -0.5f)),
|
||
|
|
matrix.MultiplyPoint(new Vector3(-0.5f, 0, 0.5f)),
|
||
|
|
matrix.MultiplyPoint(new Vector3(0.5f, 0, 0.5f)),
|
||
|
|
matrix.MultiplyPoint(new Vector3(0.5f, 0, -0.5f))
|
||
|
|
};
|
||
|
|
|
||
|
|
return quad;
|
||
|
|
}
|
||
|
|
|
||
|
|
public void GetQuad(Vector3[] quad)
|
||
|
|
{
|
||
|
|
Matrix4x4 matrix = Matrix4x4.TRS(Position, Rotation, Scale);
|
||
|
|
quad[0] = matrix.MultiplyPoint(new Vector3(-0.5f, 0, -0.5f));
|
||
|
|
quad[1] = matrix.MultiplyPoint(new Vector3(-0.5f, 0, 0.5f));
|
||
|
|
quad[2] = matrix.MultiplyPoint(new Vector3(0.5f, 0, 0.5f));
|
||
|
|
quad[3] = matrix.MultiplyPoint(new Vector3(0.5f, 0, -0.5f));
|
||
|
|
}
|
||
|
|
|
||
|
|
private void GetUvPoints(GStylizedTerrain t, Vector3[] worldPoint, Vector2[] uvPoint)
|
||
|
|
{
|
||
|
|
for (int i = 0; i < uvPoints.Length; ++i)
|
||
|
|
{
|
||
|
|
uvPoints[i] = t.WorldPointToUV(worldPoints[i]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void GetBox(Vector3[] box)
|
||
|
|
{
|
||
|
|
Matrix4x4 matrix = Matrix4x4.TRS(Position, Rotation, Scale);
|
||
|
|
box[0] = matrix.MultiplyPoint(new Vector3(-0.5f, 0, -0.5f));
|
||
|
|
box[1] = matrix.MultiplyPoint(new Vector3(-0.5f, 0, 0.5f));
|
||
|
|
box[2] = matrix.MultiplyPoint(new Vector3(0.5f, 0, 0.5f));
|
||
|
|
box[3] = matrix.MultiplyPoint(new Vector3(0.5f, 0, -0.5f));
|
||
|
|
box[4] = matrix.MultiplyPoint(new Vector3(-0.5f, 1, -0.5f));
|
||
|
|
box[5] = matrix.MultiplyPoint(new Vector3(-0.5f, 1, 0.5f));
|
||
|
|
box[6] = matrix.MultiplyPoint(new Vector3(0.5f, 1, 0.5f));
|
||
|
|
box[7] = matrix.MultiplyPoint(new Vector3(0.5f, 1, -0.5f));
|
||
|
|
}
|
||
|
|
|
||
|
|
private RenderTexture GetRenderTexture(string key)
|
||
|
|
{
|
||
|
|
int resolution = MaskResolution;
|
||
|
|
if (!TempRt.ContainsKey(key) ||
|
||
|
|
TempRt[key] == null)
|
||
|
|
{
|
||
|
|
RenderTexture rt = new RenderTexture(resolution, resolution, 0, RenderTextureFormat.ARGB32, RenderTextureReadWrite.Linear);
|
||
|
|
rt.wrapMode = TextureWrapMode.Clamp;
|
||
|
|
TempRt[key] = rt;
|
||
|
|
}
|
||
|
|
else if (TempRt[key].width != resolution || TempRt[key].height != resolution)
|
||
|
|
{
|
||
|
|
TempRt[key].Release();
|
||
|
|
Object.DestroyImmediate(TempRt[key]);
|
||
|
|
RenderTexture rt = new RenderTexture(resolution, resolution, 0, RenderTextureFormat.ARGB32, RenderTextureReadWrite.Linear);
|
||
|
|
rt.wrapMode = TextureWrapMode.Clamp;
|
||
|
|
TempRt[key] = rt;
|
||
|
|
}
|
||
|
|
|
||
|
|
return TempRt[key];
|
||
|
|
}
|
||
|
|
|
||
|
|
public void ClearTrees()
|
||
|
|
{
|
||
|
|
IEnumerator<GStylizedTerrain> terrains = GStylizedTerrain.ActiveTerrains.GetEnumerator();
|
||
|
|
while (terrains.MoveNext())
|
||
|
|
{
|
||
|
|
GStylizedTerrain t = terrains.Current;
|
||
|
|
if (groupId < 0 ||
|
||
|
|
(groupId >= 0 && groupId == t.GroupId))
|
||
|
|
{
|
||
|
|
ClearTrees(t);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private void ClearTrees(GStylizedTerrain t)
|
||
|
|
{
|
||
|
|
if (t.TerrainData == null)
|
||
|
|
return;
|
||
|
|
if (t.TerrainData.Foliage.Trees == null)
|
||
|
|
return;
|
||
|
|
Vector3 terrainSize = new Vector3(
|
||
|
|
t.TerrainData.Geometry.Width,
|
||
|
|
t.TerrainData.Geometry.Height,
|
||
|
|
t.TerrainData.Geometry.Length);
|
||
|
|
Vector3 scale = new Vector3(
|
||
|
|
GUtilities.InverseLerpUnclamped(0, terrainSize.x, Scale.x),
|
||
|
|
GUtilities.InverseLerpUnclamped(0, terrainSize.y, Scale.y),
|
||
|
|
GUtilities.InverseLerpUnclamped(0, terrainSize.z, Scale.z));
|
||
|
|
Matrix4x4 matrix = Matrix4x4.TRS(
|
||
|
|
t.WorldPointToNormalized(Position),
|
||
|
|
Rotation,
|
||
|
|
scale);
|
||
|
|
Matrix4x4 normalizeToStamp = matrix.inverse;
|
||
|
|
|
||
|
|
t.TerrainData.Foliage.RemoveTreeInstances(tree =>
|
||
|
|
{
|
||
|
|
Vector3 stampSpacePos = normalizeToStamp.MultiplyPoint(tree.Position);
|
||
|
|
return
|
||
|
|
stampSpacePos.x >= -0.5f && stampSpacePos.x <= 0.5f &&
|
||
|
|
stampSpacePos.y >= 0f && stampSpacePos.y <= 1f &&
|
||
|
|
stampSpacePos.z >= -0.5f && stampSpacePos.z <= 0.5f;
|
||
|
|
});
|
||
|
|
|
||
|
|
t.TerrainData.SetDirty(GTerrainData.DirtyFlags.Foliage);
|
||
|
|
}
|
||
|
|
|
||
|
|
public void ClearGrasses()
|
||
|
|
{
|
||
|
|
IEnumerator<GStylizedTerrain> terrains = GStylizedTerrain.ActiveTerrains.GetEnumerator();
|
||
|
|
while (terrains.MoveNext())
|
||
|
|
{
|
||
|
|
GStylizedTerrain t = terrains.Current;
|
||
|
|
if (groupId < 0 ||
|
||
|
|
(groupId >= 0 && groupId == t.GroupId))
|
||
|
|
{
|
||
|
|
ClearGrasses(t);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private void ClearGrasses(GStylizedTerrain t)
|
||
|
|
{
|
||
|
|
if (t.TerrainData == null)
|
||
|
|
return;
|
||
|
|
if (t.TerrainData.Foliage.Grasses == null)
|
||
|
|
return;
|
||
|
|
Vector3 terrainSize = new Vector3(
|
||
|
|
t.TerrainData.Geometry.Width,
|
||
|
|
t.TerrainData.Geometry.Height,
|
||
|
|
t.TerrainData.Geometry.Length);
|
||
|
|
Vector3 scale = new Vector3(
|
||
|
|
GUtilities.InverseLerpUnclamped(0, terrainSize.x, Scale.x),
|
||
|
|
GUtilities.InverseLerpUnclamped(0, terrainSize.y, Scale.y),
|
||
|
|
GUtilities.InverseLerpUnclamped(0, terrainSize.z, Scale.z));
|
||
|
|
Matrix4x4 matrix = Matrix4x4.TRS(
|
||
|
|
t.WorldPointToNormalized(Position),
|
||
|
|
Rotation,
|
||
|
|
scale);
|
||
|
|
Matrix4x4 normalizeToStamp = matrix.inverse;
|
||
|
|
|
||
|
|
GGrassPatch[] patches = t.TerrainData.Foliage.GrassPatches;
|
||
|
|
for (int i = 0; i < patches.Length; ++i)
|
||
|
|
{
|
||
|
|
patches[i].RemoveInstances(grass =>
|
||
|
|
{
|
||
|
|
Vector3 stampSpacePos = normalizeToStamp.MultiplyPoint(grass.Position);
|
||
|
|
return
|
||
|
|
stampSpacePos.x >= -0.5f && stampSpacePos.x <= 0.5f &&
|
||
|
|
stampSpacePos.y >= 0f && stampSpacePos.y <= 1f &&
|
||
|
|
stampSpacePos.z >= -0.5f && stampSpacePos.z <= 0.5f;
|
||
|
|
});
|
||
|
|
}
|
||
|
|
t.TerrainData.SetDirty(GTerrainData.DirtyFlags.Foliage);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|