void Apply(bool createAssets)
{
heightsFile = EditorUtility.OpenFilePanel("Select heights definitions file", Application.dataPath, "");
PathReader path = new PathReader(heightsFile);
float pathLength = path.GetMaxValue();
chunksCount = ((int)(pathLength + 1)) / chunkSize;
if (createAssets)
{
GenerateTerrains(chunksCount);
}
/************
* GET TERRAINS
********/
sceneTerrains = FindObjectsOfType(typeof(Terrain)) as Terrain[];
if (sceneTerrains.Length == 0 || chunksCount != sceneTerrains.Length)
{
EditorUtility.DisplayDialog("Error", "The number of terrains does not match input file", "Ok");
return;
}
//ORDER BY Z
System.Array.Sort(sceneTerrains, zComparator);
/****************************
* Your track is between 25% and 75% of the terrain height
* *************************/
int maxHeight = path.GetMaxHeight();
int terrainsHeight = maxHeight * 2;
float groundOffset = 1f / 4f;
//SET TERRAINS NEW HEIGHT
for (int i = 0; i < sceneTerrains.Length; i++)
{
sceneTerrains[i].terrainData.size = new Vector3(chunkSize, terrainsHeight, chunkSize);
}
/****************
* Use an extend heightmap for the coherent noise (not chunked)
* **************/
int extendedHeightmapLength = chunkSize /*heightmapResolution*/ * chunksCount; //NEEDS FIX
float[,] extendedHeightmap = new float[heightmapResolution, extendedHeightmapLength];
float value = 0f;
int projectionStart = 0;
int projectionEnd = 0;
/*****************
* If the height definition does not start from 0,
* the terrain is set to the height of the first point
* **************/
int firstPosition = RealPositionToHeightmap(path.points [0].positionProjection);
for (int z = 0; z < firstPosition; z++)
{
for (int x = 0; x < heightmapResolution; x++)
{
extendedHeightmap[x, z] = path.points [0].height / terrainsHeight + groundOffset;
}
}
/******************************
* Set the slopes according to the heights definition
* ***************************/
for (int p = 0; p < path.points.Count - 1; p++)
{
PathReader.Point s = path.points[p];
PathReader.Point e = path.points[p + 1];
projectionStart = RealPositionToHeightmap(s.positionProjection);
projectionEnd = RealPositionToHeightmap(e.positionProjection);
float segmentLength = projectionEnd - projectionStart;
for (int z = projectionStart; z < projectionEnd; z++)
{
value = Mathf.Lerp(s.height, e.height, (float)(z - projectionStart) / segmentLength);
for (int x = 0; x < heightmapResolution; x++)
{
extendedHeightmap[x, z] = value / terrainsHeight + groundOffset;
}
}
}
/****************************
* The segment from the last point and the end of the terrain
* is set to the last height
* *************************/
for (int z = projectionEnd; z < extendedHeightmapLength; z++)
{
for (int x = 0; x < heightmapResolution; x++)
{
extendedHeightmap[x, z] = value / terrainsHeight + groundOffset;
}
}
//APPLY NOISE
float[,] noiseMap = generatePerlin(seed, heightmapResolution, extendedHeightmapLength);
//APPLY THE COMPUTED HEIGHTMAP TO THE TERRAINS
for (int i = 0; i < sceneTerrains.Length; i++)
{
float[,] slopes = getTerrainHeightmap(extendedHeightmap, i);
float[,] noise = getTerrainHeightmap(noiseMap, i);
float[,] mergedHeightMap = new float[heightmapResolution, heightmapResolution];
for (int w = 0; w < heightmapResolution; w++)
{
int leftPathBorder = (heightmapResolution / 2) - pathWidth;
int rightPathBorder = (heightmapResolution / 2) + pathWidth;
for (int h = 0; h < leftPathBorder; h++)
{
float ratio = leftHeight * Mathf.SmoothStep(1, /*1-leftHeight*/ 0, (float)h / (float)leftPathBorder);
float noiseValue = (noise[w, h]) * noiseAmount;
mergedHeightMap[w, h] = slopes[w, h] + ratio * noiseValue;
/*float ratio = Mathf.SmoothStep(0.7f,0,(float)h/(float)leftPathBorder);
* float noiseValue = noise[w,h];
* float cliff = Mathf.SmoothStep(0.25f, slopes[w,h],(float)h/(float)leftPathBorder);
* mergedHeightMap[w,h] = cliff-ratio*noiseValue;*/
}
for (int h = rightPathBorder; h < heightmapResolution; h++)
{
float ratio = rightHeight * Mathf.SmoothStep(0, /*rightHeight*/ 1, (float)(h - pathWidth - leftPathBorder) / (float)(leftPathBorder));
float noiseValue = (noise[w, h]) * noiseAmount;
mergedHeightMap[w, h] = slopes[w, h] + ratio * noiseValue;
}
for (int h = leftPathBorder; h < rightPathBorder; h++)
{
mergedHeightMap[w, h] = slopes[w, h];
}
}
sceneTerrains[i].terrainData.SetHeights(0, 0, mergedHeightMap);
}
if (createAssets)
{
CreateLight();
}
}