/// <summary>
/// Smooth the active terrain - needs to be extended to all and to handle edges
/// </summary>
/// <param name="iterations">Number of smoothing iterations</param>
public static void Smooth(int iterations)
{
UnityHeightMap hm = new UnityHeightMap(Terrain.activeTerrain);
hm.Smooth(iterations);
hm.SaveToTerrain(Terrain.activeTerrain);
}
/// <summary>
/// Create the mask and put it in the root assets directory
/// </summary>
public void CreateMask()
{
// Check to see if we have an active terrain
if (Terrain.activeTerrain == null)
{
Debug.LogError("You need an active terrain!");
return;
}
// Get the terrain
UnityHeightMap hm = new UnityHeightMap(Terrain.activeTerrain);
// Create a heightmap for the mask
HeightMap maskHm = new HeightMap(hm.Width(), hm.Depth());
//Iterate though our terrain, at the resolution of the heightmap and pick up the height
float testHeight;
float nrmSeaLevel = m_seaLevel / Terrain.activeTerrain.terrainData.size.y;
for (int x = 0; x < hm.Width(); x++)
{
for (int z = 0; z < hm.Depth(); z++)
{
testHeight = hm[x, z];
if (testHeight < nrmSeaLevel)
{
continue;
}
else if (Gaia.GaiaUtils.Math_ApproximatelyEqual(testHeight, nrmSeaLevel))
{
//We have a shoreline, lets mask it
maskHm[x, z] = m_aboveWaterStrength;
MakeMask(x, z, nrmSeaLevel, m_maskSize, hm, maskHm);
}
else
{
maskHm[x, z] = m_aboveWaterStrength;
}
}
}
maskHm.Flip();
//maskHm.Smooth(1);
string path = "Assets/GaiaMasks/";
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
path = Path.Combine(path, GaiaCommon1.Utils.FixFileName(string.Format("TerrainShoreLineMask-{0:yyyyMMdd-HHmmss}", DateTime.Now)));
Gaia.GaiaUtils.CompressToSingleChannelFileImage(maskHm.Heights(), path, TextureFormat.RGBA32, false, true);
EditorUtility.DisplayDialog("Shoreline Masker", "Your shorline mask has been created at " + path, "OK");
}
public MaskedMeshParamters(UnityHeightMap heightMap, UnityHeightMap maskMap, float maskThreshold, int meshResolution, Vector3 meshScale, int meshType, WindingOrder winding)
{
Heightmap = heightMap;
Maskmap = maskMap;
MaskThreshold = maskThreshold;
MeshResolution = meshResolution;
MeshScale = meshScale;
MeshType = meshType;
Winding = winding;
}
/// <summary>
/// Returns a heightmap that only contains the single color channel info of the original map
/// </summary>
/// <param name="channel">The color channel to return</param>
/// <returns></returns>
public UnityHeightMap GetColorChannelHeightMap()
{
UnityHeightMap returnMap = new UnityHeightMap(this);
for (int hmX = 0; hmX < m_widthX; hmX++)
{
for (int hmZ = 0; hmZ < m_depthZ; hmZ++)
{
returnMap.m_heights[hmX, hmZ] = this.m_heights[hmX, hmZ] / 3f;
}
}
return(returnMap);
}
/// <summary>
/// Initialise the extension
/// </summary>
public override void Initialise()
{
m_textureHM = new UnityHeightMap(m_grassMask);
if (m_normaliseMask && m_textureHM.HasData())
{
m_textureHM.Normalise();
}
if (m_invertMask && m_textureHM.HasData())
{
m_textureHM.Invert();
}
if (m_flipMask && m_textureHM.HasData())
{
m_textureHM.Flip();
}
}
/// <summary>
/// Create a waterflow map from the terrain
/// </summary>
/// <param name="terrain">Terrain to create the waterflow map from</param>
public void CreateWaterFlowMap(Terrain terrain)
{
m_heightMap = new UnityHeightMap(terrain);
int width = m_heightMap.Width();
int depth = m_heightMap.Depth();
m_waterFlowMap = new HeightMap(width, depth);
//Avoid edges for now
for (int x = 1; x < (width - 1); x++)
{
for (int z = 1; z < (depth - 1); z++)
{
TraceWaterFlow(x, z, width, depth);
}
}
//Flip it so it matches the terrain
m_waterFlowMap.Flip();
//Smooth the water map
m_waterFlowMap.Smooth(m_waterflowSmoothIterations);
}
/// <summary>
/// Create a unity heightmap by replicating a source file
/// </summary>
/// <param name="source">Source heightmap</param>
public UnityHeightMap(UnityHeightMap source) : base(source)
{
m_boundsWU = source.m_boundsWU;
m_isDirty = false;
}
/// <summary>
/// Pick up latest terrain information
/// </summary>
public void Visualise()
{
m_terrainHeightMap = new UnityHeightMap(Gaia.TerrainHelper.GetActiveTerrain());
}
