public void Paint(Pinwheel.Griffin.GStylizedTerrain terrain, GFoliagePainterArgs args)
{
if (args.GrassIndices.Count == 0)
{
return;
}
if (terrain.TerrainData == null)
{
return;
}
if (terrain.TerrainData.Foliage.Grasses == null)
{
return;
}
if (args.MouseEventType == GPainterMouseEventType.Up || args.ShouldCommitNow)
{
terrain.TerrainData.SetDirty(GTerrainData.DirtyFlags.Foliage);
GRuntimeSettings.Instance.isEditingFoliage = false;
return;
}
Vector2[] uvCorners = new Vector2[args.WorldPointCorners.Length];
for (int i = 0; i < uvCorners.Length; ++i)
{
uvCorners[i] = terrain.WorldPointToUV(args.WorldPointCorners[i]);
}
Rect dirtyRect = GUtilities.GetRectContainsPoints(uvCorners);
if (!dirtyRect.Overlaps(new Rect(0, 0, 1, 1)))
{
return;
}
GRuntimeSettings.Instance.isEditingFoliage = true;
Texture2D clonedMask = null;
Texture2D terrainMask = null;
if (args.Mask != null)
{
clonedMask = GCommon.CloneAndResizeTexture(args.Mask, 256, 256);
}
if (args.EnableTerrainMask)
{
terrainMask = terrain.TerrainData.Mask.MaskMap;
}
int multiplier = args.ActionType == GPainterActionType.Normal ? 1 : -1;
int grassIndex = -1;
Vector3 terrainSize = new Vector3(
terrain.TerrainData.Geometry.Width,
terrain.TerrainData.Geometry.Height,
terrain.TerrainData.Geometry.Length);
Vector3 localPos = Vector3.zero;
Vector3 worldPos = Vector3.zero;
Vector3 bary0 = Vector3.zero;
Vector3 bary1 = Vector3.zero;
Vector2 maskUv = Vector2.zero;
Color maskColor = Color.white;
Vector3 scale = Vector3.zero;
GGrassPatch[] patches = terrain.TerrainData.Foliage.GrassPatches;
for (int p = 0; p < patches.Length; ++p)
{
if (!patches[p].GetUvRange().Overlaps(dirtyRect))
{
continue;
}
List <GGrassInstance> instances = patches[p].Instances;
int instanceCount = instances.Count;
for (int i = 0; i < instanceCount; ++i)
{
grassIndex = args.GrassIndices[Random.Range(0, args.GrassIndices.Count)];
GGrassInstance grass = instances[i];
if (grass.PrototypeIndex != grassIndex)
{
continue;
}
localPos.Set(
grass.position.x * terrainSize.x,
grass.position.y * terrainSize.y,
grass.position.z * terrainSize.z);
worldPos = terrain.transform.TransformPoint(localPos);
GUtilities.CalculateBarycentricCoord(
new Vector2(worldPos.x, worldPos.z),
new Vector2(args.WorldPointCorners[0].x, args.WorldPointCorners[0].z),
new Vector2(args.WorldPointCorners[1].x, args.WorldPointCorners[1].z),
new Vector2(args.WorldPointCorners[2].x, args.WorldPointCorners[2].z),
ref bary0);
GUtilities.CalculateBarycentricCoord(
new Vector2(worldPos.x, worldPos.z),
new Vector2(args.WorldPointCorners[0].x, args.WorldPointCorners[0].z),
new Vector2(args.WorldPointCorners[2].x, args.WorldPointCorners[2].z),
new Vector2(args.WorldPointCorners[3].x, args.WorldPointCorners[3].z),
ref bary1);
if (bary0.x >= 0 && bary0.y >= 0 && bary0.z >= 0)
{
maskUv = bary0.x * Vector2.zero + bary0.y * Vector2.up + bary0.z * Vector2.one;
}
else if (bary1.x >= 0 && bary1.y >= 0 && bary1.z >= 0)
{
maskUv = bary1.x * Vector2.zero + bary1.y * Vector2.one + bary1.z * Vector2.right;
}
else
{
continue;
}
if (clonedMask != null)
{
maskColor = clonedMask.GetPixelBilinear(maskUv.x, maskUv.y);
if (Random.value > maskColor.grayscale)
{
continue;
}
}
//sample terrain mask
if (args.EnableTerrainMask)
{
maskColor = terrainMask.GetPixelBilinear(grass.position.x, grass.position.z);
if (Random.value < maskColor.r)
{
continue;
}
}
scale.Set(
Mathf.Max(0, grass.scale.x + multiplier * maskColor.grayscale * args.ScaleStrength * GUtilities.DELTA_TIME),
Mathf.Max(0, grass.scale.y + multiplier * maskColor.grayscale * args.ScaleStrength * GUtilities.DELTA_TIME),
Mathf.Max(0, grass.scale.z + multiplier * maskColor.grayscale * args.ScaleStrength * GUtilities.DELTA_TIME));
GSpawnFilterArgs filterArgs = GSpawnFilterArgs.Create();
filterArgs.Terrain = terrain;
filterArgs.Position = worldPos;
filterArgs.Rotation = grass.Rotation;
filterArgs.Scale = scale;
List <Type> suitableFilter = SuitableFilterTypes;
if (args.Filters != null)
{
for (int fIndex = 0; fIndex < args.Filters.Length; ++fIndex)
{
if (args.Filters[fIndex] != null &&
args.Filters[fIndex].Ignore != true)
{
if (suitableFilter.Contains(args.Filters[fIndex].GetType()))
{
args.Filters[fIndex].Apply(ref filterArgs);
}
}
if (filterArgs.ShouldExclude)
{
break;
}
}
}
grass.scale = filterArgs.Scale;
instances[i] = grass;
}
patches[p].Changed();
}
terrain.TerrainData.Foliage.SetGrassRegionDirty(dirtyRect);
GUtilities.MarkCurrentSceneDirty();
}
private void HandleSpawnGrass(GStylizedTerrain terrain, GFoliagePainterArgs args)
{
int grassIndex = -1;
Vector3 randomPos = Vector3.zero;
Vector3 rayOrigin = Vector3.zero;
Vector3 rayDirection = Vector3.down;
float sqrtTwo = Mathf.Sqrt(2);
Ray ray = new Ray();
RaycastHit samplePoint;
Vector3 bary0 = Vector3.zero;
Vector3 bary1 = Vector3.zero;
Vector2 maskUv = Vector2.zero;
Vector2 samplePointTexcoord = Vector2.zero;
Color maskColor = Color.white;
Texture2D clonedMask = null;
Texture2D terrainMask = null;
if (args.Mask != null)
{
clonedMask = GCommon.CloneAndResizeTexture(args.Mask, 256, 256);
}
if (args.EnableTerrainMask)
{
terrainMask = terrain.TerrainData.Mask.MaskMap;
}
int prototypeCount = terrain.TerrainData.Foliage.Grasses.Prototypes.Count;
int sampleCount = args.Density;
List <GGrassInstance> newInstances = new List <GGrassInstance>();
for (int i = 0; i < sampleCount; ++i)
{
grassIndex = args.GrassIndices[Random.Range(0, args.GrassIndices.Count)];
if (grassIndex < 0 || grassIndex >= prototypeCount)
{
continue;
}
randomPos = args.HitPoint + Random.insideUnitSphere * args.Radius * sqrtTwo;
rayOrigin.Set(
randomPos.x,
10000,
randomPos.z);
ray.origin = rayOrigin;
ray.direction = rayDirection;
if (terrain.Raycast(ray, out samplePoint, float.MaxValue))
{
GUtilities.CalculateBarycentricCoord(
new Vector2(samplePoint.point.x, samplePoint.point.z),
new Vector2(args.WorldPointCorners[0].x, args.WorldPointCorners[0].z),
new Vector2(args.WorldPointCorners[1].x, args.WorldPointCorners[1].z),
new Vector2(args.WorldPointCorners[2].x, args.WorldPointCorners[2].z),
ref bary0);
GUtilities.CalculateBarycentricCoord(
new Vector2(samplePoint.point.x, samplePoint.point.z),
new Vector2(args.WorldPointCorners[0].x, args.WorldPointCorners[0].z),
new Vector2(args.WorldPointCorners[2].x, args.WorldPointCorners[2].z),
new Vector2(args.WorldPointCorners[3].x, args.WorldPointCorners[3].z),
ref bary1);
if (bary0.x >= 0 && bary0.y >= 0 && bary0.z >= 0)
{
maskUv = bary0.x * Vector2.zero + bary0.y * Vector2.up + bary0.z * Vector2.one;
}
else if (bary1.x >= 0 && bary1.y >= 0 && bary1.z >= 0)
{
maskUv = bary1.x * Vector2.zero + bary1.y * Vector2.one + bary1.z * Vector2.right;
}
else
{
continue;
}
//sample mask
if (clonedMask != null)
{
maskColor = clonedMask.GetPixelBilinear(maskUv.x, maskUv.y);
if (Random.value > maskColor.grayscale)
{
continue;
}
}
//sample terrain mask
if (args.EnableTerrainMask)
{
samplePointTexcoord = samplePoint.textureCoord;
maskColor = terrainMask.GetPixelBilinear(samplePointTexcoord.x, samplePointTexcoord.y);
if (Random.value < maskColor.r)
{
continue;
}
}
//apply filter
GSpawnFilterArgs filterArgs = GSpawnFilterArgs.Create();
filterArgs.Terrain = terrain;
filterArgs.Position = samplePoint.point;
filterArgs.SurfaceNormal = samplePoint.normal;
filterArgs.SurfaceTexcoord = samplePoint.textureCoord;
List <Type> suitableFilter = SuitableFilterTypes;
if (args.Filters != null)
{
for (int fIndex = 0; fIndex < args.Filters.Length; ++fIndex)
{
if (args.Filters[fIndex] != null &&
args.Filters[fIndex].Ignore != true)
{
if (suitableFilter.Contains(args.Filters[fIndex].GetType()))
{
args.Filters[fIndex].Apply(ref filterArgs);
}
}
if (filterArgs.ShouldExclude)
{
break;
}
}
}
//spawn
if (filterArgs.ShouldExclude)
{
continue;
}
GGrassInstance grass = GGrassInstance.Create(grassIndex);
grass.Position = terrain.WorldPointToNormalized(filterArgs.Position);
grass.Rotation = filterArgs.Rotation;
grass.Scale = filterArgs.Scale;
newInstances.Add(grass);
}
}
terrain.TerrainData.Foliage.AddGrassInstances(newInstances);
if (clonedMask != null)
{
Object.DestroyImmediate(clonedMask);
}
}
public void Paint(Pinwheel.Griffin.GStylizedTerrain terrain, GObjectPainterArgs args)
{
if (args.MouseEventType == GPainterMouseEventType.Up)
{
return;
}
Vector2[] uvCorners = new Vector2[args.WorldPointCorners.Length];
for (int i = 0; i < uvCorners.Length; ++i)
{
uvCorners[i] = terrain.WorldPointToUV(args.WorldPointCorners[i]);
}
Rect dirtyRect = GUtilities.GetRectContainsPoints(uvCorners);
if (!dirtyRect.Overlaps(new Rect(0, 0, 1, 1)))
{
return;
}
Texture2D clonedMask = null;
Texture2D terrainMask = null;
if (args.Mask != null)
{
clonedMask = GCommon.CloneAndResizeTexture(args.Mask, 256, 256);
}
if (args.EnableTerrainMask)
{
terrainMask = terrain.TerrainData.Mask.MaskMap;
}
int multiplier = args.ActionType == GPainterActionType.Normal ? 1 : -1;
int prototypeIndex = -1;
Vector2 terrainUv = Vector2.zero;
Vector3 worldPos = Vector3.zero;
Vector3 bary0 = Vector3.zero;
Vector3 bary1 = Vector3.zero;
Vector2 maskUv = Vector2.zero;
Color maskColor = Color.white;
Vector3 scale = Vector3.zero;
for (int i = 0; i < args.PrototypeIndices.Count; ++i)
{
prototypeIndex = args.PrototypeIndices[i];
if (prototypeIndex < 0 || prototypeIndex >= args.Prototypes.Count)
{
continue;
}
GameObject g = args.Prototypes[prototypeIndex];
if (g == null)
{
continue;
}
GameObject root = GSpawner.GetRoot(terrain, g);
Transform[] instances = GUtilities.GetChildrenTransforms(root.transform);
int instanceCount = instances.Length;
for (int j = 0; j < instanceCount; ++j)
{
worldPos = instances[j].position;
GUtilities.CalculateBarycentricCoord(
new Vector2(worldPos.x, worldPos.z),
new Vector2(args.WorldPointCorners[0].x, args.WorldPointCorners[0].z),
new Vector2(args.WorldPointCorners[1].x, args.WorldPointCorners[1].z),
new Vector2(args.WorldPointCorners[2].x, args.WorldPointCorners[2].z),
ref bary0);
GUtilities.CalculateBarycentricCoord(
new Vector2(worldPos.x, worldPos.z),
new Vector2(args.WorldPointCorners[0].x, args.WorldPointCorners[0].z),
new Vector2(args.WorldPointCorners[2].x, args.WorldPointCorners[2].z),
new Vector2(args.WorldPointCorners[3].x, args.WorldPointCorners[3].z),
ref bary1);
if (bary0.x >= 0 && bary0.y >= 0 && bary0.z >= 0)
{
maskUv = bary0.x * Vector2.zero + bary0.y * Vector2.up + bary0.z * Vector2.one;
}
else if (bary1.x >= 0 && bary1.y >= 0 && bary1.z >= 0)
{
maskUv = bary1.x * Vector2.zero + bary1.y * Vector2.one + bary1.z * Vector2.right;
}
else
{
continue;
}
if (clonedMask != null)
{
maskColor = clonedMask.GetPixelBilinear(maskUv.x, maskUv.y);
if (Random.value > maskColor.grayscale)
{
continue;
}
}
if (args.EnableTerrainMask)
{
terrainUv = terrain.WorldPointToUV(worldPos);
maskColor = terrainMask.GetPixelBilinear(terrainUv.x, terrainUv.y);
if (Random.value < maskColor.r)
{
continue;
}
}
scale.Set(
Mathf.Max(0, instances[j].transform.localScale.x + multiplier * maskColor.grayscale * args.ScaleStrength * GUtilities.DELTA_TIME),
Mathf.Max(0, instances[j].transform.localScale.y + multiplier * maskColor.grayscale * args.ScaleStrength * GUtilities.DELTA_TIME),
Mathf.Max(0, instances[j].transform.localScale.z + multiplier * maskColor.grayscale * args.ScaleStrength * GUtilities.DELTA_TIME));
GSpawnFilterArgs filterArgs = GSpawnFilterArgs.Create();
filterArgs.Terrain = terrain;
filterArgs.Position = worldPos;
filterArgs.Rotation = instances[j].transform.rotation;
filterArgs.Scale = scale;
List <Type> suitableFilter = SuitableFilterTypes;
if (args.Filters != null)
{
for (int fIndex = 0; fIndex < args.Filters.Length; ++fIndex)
{
if (args.Filters[fIndex] != null &&
args.Filters[fIndex].Ignore != true)
{
if (suitableFilter.Contains(args.Filters[fIndex].GetType()))
{
args.Filters[fIndex].Apply(ref filterArgs);
}
}
if (filterArgs.ShouldExclude)
{
break;
}
}
}
instances[j].transform.localScale = filterArgs.Scale;
}
}
}