/* private Vector3[] GetVertives()
* {
* int sum = Mathf.FloorToInt((segment.x + 1) * (segment.y + 1));
* float w = size.x / segment.x;
* float h = size.y / segment.y;
*
* int index = 0;
* GetUV();
* GetTriangles();
* vertives = new Vector3[sum];
* for (int i = 0; i < segment.y + 1; i++)
* {
* for (int j = 0; j < segment.x + 1; j++)
* {
* float tempHeight = 0;
* if (heightMap != null)
* {
* tempHeight = GetHeight(heightMap, uvs[index]);
* }
* vertives[index] = new Vector3(j * w, tempHeight, i * h);
* index++;
* }
* }
* return vertives;
* }
*/
/* private Vector3[] GetVertives()//texture
* {
* int sum = Mathf.FloorToInt((segment.x + 1) * (segment.y + 1));
* float w = size.x / segment.x;
* float h = size.y / segment.y;
*
* int index = 0;
* GetUV();
* GetTriangles();
* vertives = new Vector3[sum];
* Vector3 point00 = new Vector3(-0.5f, -0.5f);
* Vector3 point10 = new Vector3(0.5f, -0.5f);
* Vector3 point01 = new Vector3(-0.5f, 0.5f);
* Vector3 point11 = new Vector3(0.5f, 0.5f);
*
*
*
* Random.seed = 42;
*
*
* for (int i = 0; i < segment.y + 1; i++)
* {
* for (int j = 0; j < segment.x + 1; j++)
* {
* float tempHeight = 0;
* // if ((i+j)%5 == 0)
* {
*
* tempHeight =Mathf.Abs (heightMap.GetPixel(i , j ).r -0.5f)*2* 10;//
*
* }
* vertives[index] = new Vector3(j * w, tempHeight, i * h);
* index++;
* }
* }
* return vertives;
* }
*/
/* private Vector3[] GetVertives()//perlin
* {
*
*
*
* int sum = Mathf.FloorToInt((segment.x + 1) * (segment.y + 1));
* float w = size.x / segment.x;
* float h = size.y / segment.y;
*
* int index = 0;
* GetUV();
* GetTriangles();
* vertives = new Vector3[sum];
*
*
* int resolution = 256;
* Vector3 point00 = new Vector3(-0.5f, -0.5f);
* Vector3 point10 = new Vector3(0.5f, -0.5f);
* Vector3 point01 = new Vector3(-0.5f, 0.5f);
* Vector3 point11 = new Vector3(0.5f, 0.5f);
*
*
* float stepSize = 1f / resolution;
*
*
*
* Random.seed = 42;
*
*
* for (int i = 0; i < segment.y + 1; i++)
* {
* Vector3 point0 = Vector3.Lerp(point00, point01, (i + 0.5f) * stepSize);
* Vector3 point1 = Vector3.Lerp(point10, point11, (i + 0.5f) * stepSize);
* for (int j = 0; j < segment.x + 1; j++)
* {
* float tempHeight = 0;
* // if ((i+j)%5 == 0)
* {
* Vector3 point = Vector3.Lerp(point0, point1, (j + 0.5f) * stepSize);
*
* tempHeight = NoiseMethod.Perlin2D(point, 22) * 10;//
*
* }
* vertives[index] = new Vector3(j * w, tempHeight, i * h);
* index++;
* }
* }
* return vertives;
* }*/
private Vector3[] GetVertives()//Fractal Noise
{
float frequency = 5;
//[Range(1, 8)]
int octaves = 6;//1普通，8烟雾状
// [Range(1f, 4f)]
float lacunarity = 2f;
// [Range(0f, 1f)]
float persistence = 0.5f;
int sum = Mathf.FloorToInt((segment.x + 1) * (segment.y + 1));
float w = size.x / segment.x;
float h = size.y / segment.y;
int index = 0;
GetUV();
GetTriangles();
vertives = new Vector3[sum];
int resolution = 256;
Vector3 point00 = new Vector3(-0.5f, -0.5f);
Vector3 point10 = new Vector3(0.5f, -0.5f);
Vector3 point01 = new Vector3(-0.5f, 0.5f);
Vector3 point11 = new Vector3(0.5f, 0.5f);
float stepSize = 1f / resolution;
Random.seed = 42;
for (int i = 0; i < segment.y + 1; i++)
{
Vector3 point0 = Vector3.Lerp(point00, point01, (i + 0.5f) * stepSize);
Vector3 point1 = Vector3.Lerp(point10, point11, (i + 0.5f) * stepSize);
for (int j = 0; j < segment.x + 1; j++)
{
float tempHeight = 0;
// if ((i+j)%5 == 0)
{
Vector3 point = Vector3.Lerp(point0, point1, (j + 0.5f) * stepSize);
float sample = NoiseMethod.Sum(1, point, frequency, octaves, lacunarity, persistence);
tempHeight = sample * 20;//
}
vertives[index] = new Vector3(j * w, tempHeight, i * h);
index++;
}
}
return(vertives);
}
