unity3d 发布后动态修改地形高度源码

//tOdO:
if (m_TerrainData == null) {
m_Terrain= FindObjectOfType<Terrain>();
m_TerrainData =m_Terrain.terrainData;
}
else {
//FindObjectOfType<Terrain>().SampleHeight(new Vector3(h.point.x, h.point.y + 0.1f, h.point.z));
Vector3 terrainLocalPos = h.point-m_Terrain.transform.position;
Vector2 controlPos = new Vector2(terrainLocalPos.x / m_TerrainData.size.x * m_TerrainData.heightmapWidth, terrainLocalPos.z / m_TerrainData.size.z * m_TerrainData.heightmapHeight);
float addHeight = 1.0f;
float oldHeight = m_TerrainData.GetHeight((int)controlPos.x, (int)controlPos.y);
float[,] newHeightData = new float[16, 16]; //new float[1, 1] { { (oldHeight + addHeight) / m_TerrainData.heightmapScale.y } };
for (int i = 0; i < 16; i++) {
for (int j = 0; j < 16; j++) {
newHeightData[i, j] = (oldHeight + addHeight) / m_TerrainData.heightmapScale.y;
}
}
m_TerrainData.SetHeights((int)controlPos.x, (int)controlPos.y, newHeightData);
//
//float[,] oldHeightData = terrainData.GetHeights((int)controlPos.x, (int)controlPos.y, 1, 1);
//float[,] newHeightData = new float[1, 1] { { addHeight / terrainData.heightmapScale.y + oldHeightData[0, 0] } };
//terrainData.SetHeights((int)controlPos.x, (int)controlPos.y, newHeightData);
}