/// <summary>
/// 根据含有形参的Term以及各实参计算出最终的Term并返回。
/// 如 F(length+1) 为含有形参的Term，length 为 1，则返回F(2)
/// </summary>
/// <param name="scrTerm">含有形参的Term，如F(length+1)</param>
/// <param name="table">包含各实参的DataTable类</param>
/// <returns>返回计算完成后的Term</returns>
private LTerm GetResultTerm(LTerm scrTerm, DataTable table)
{
if (scrTerm == null)
{
return(null);
}
LTerm destTerm = new LTerm();
destTerm.Symbol = scrTerm.Symbol; //将符号赋值给新的term
table.Rows[table.Rows.Count - 1]["RANDOM"] = RandomNumer.Single(); //写入随机数
for (int i = 0; i < scrTerm.Params.Count; i++)
{
table.Columns["expression"].Expression = scrTerm.Params[i]; //根据参数中的公式进行赋值，如F(length + 1)中的length + 1
destTerm.Params.Add(table.Rows[0][table.Columns.Count - 1].ToString()); //根据实参、公式计算出结果，并赋值给输出的term中的参数列表
}
return(destTerm);
}
public static Texture2D Create(int width, int height,
int count_CenterPoints, int count_PointsPerGroup = 10, float radius = 15,
Texture2D referenceTex = null, Texture2D barrierTex = null)
{
Texture2D texture = new Texture2D(width, height);
PixelInfo[] PixelInfoes = new PixelInfo[width * height]; //用于存储各像素点的信息（最近特征点和与其的距离）
Vector2[] CenterPoints = null;
if (centerPoints == null)
{
CenterPoints = RandomPoints(count_CenterPoints, width, height, referenceTex); //随机选择特征点
}
else
{
CenterPoints = centerPoints;
}
centerPoints = CenterPoints;
Vector2[] FeaturePoints = new Vector2[CenterPoints.Length * count_PointsPerGroup];
PixelInfo[] FeaturePointInfos = new PixelInfo[FeaturePoints.Length];
PixelInfo[] FeaturePointInfos_FeaturePoint = new PixelInfo[FeaturePoints.Length];
for (int i = 0; i < CenterPoints.Length; i++)
{
for (int j = 0; j < count_PointsPerGroup; j++)
{
Vector2 FeaturePoint = CenterPoints[i] + Random.insideUnitCircle * radius;
while ((FeaturePoint.x < 0 || FeaturePoint.x > width - 1 ||
FeaturePoint.y < 0 || FeaturePoint.y > height - 1))
{
FeaturePoint = CenterPoints[i] + Random.insideUnitCircle * radius;
}
FeaturePoint.x = (int)FeaturePoint.x;
FeaturePoint.y = (int)FeaturePoint.y;
FeaturePoints[i * count_PointsPerGroup + j] = FeaturePoint;
}
}
FeaturePointInfos = ComputeDistance_FC(FeaturePoints, CenterPoints);
FeaturePointInfos_FeaturePoint = ComputeDistance_FF(FeaturePoints, FeaturePointInfos);
SortFeaturePoints(ref FeaturePoints, ref FeaturePointInfos, ref FeaturePointInfos_FeaturePoint);
/*
* 计算每个像素与其最近特征点之间的距离
*/
PixelInfoes = ComputeDistanceFast(width, height, CenterPoints, FeaturePoints, FeaturePointInfos);
/*
* 计算最长的距离
* 用于实现颜色变化
*/
float MaxDistance = GetMaxDistance(PixelInfoes);
/*
* 为实现特征点有先后顺序，对中心点的颜色进行干扰
*/
for (int i = 0; i < CenterPoints.Length; i++)
{
texture.SetPixel((int)CenterPoints[i].x, (int)CenterPoints[i].y,
DEC2Color((int)(MaxDistance * RandomNumer.Single() * 0.5f * SCALE)));
}
/*
* 赋予每个特征点颜色
*/
for (int i = 0; i < FeaturePoints.Length; i++)
{
Color FeaturePixel = texture.GetPixel((int)FeaturePointInfos_FeaturePoint[i].X_NearestPoint, (int)FeaturePointInfos_FeaturePoint[i].Y_NearestPoint);
texture.SetPixel((int)FeaturePoints[i].x, (int)FeaturePoints[i].y, GetColor(FeaturePointInfos[i].Distance, MaxDistance, FeaturePixel));
}
/*
* 赋予每个像素点颜色
* 根据位置之间的关系，从近到远（黑到白）
*/
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
Color FeaturePixel = texture.GetPixel((int)PixelInfoes[i * height + j].X_NearestPoint, (int)PixelInfoes[i * height + j].Y_NearestPoint); //获取最近特征点的颜色
Color pixel = GetColor(PixelInfoes[i * height + j].Distance, MaxDistance, FeaturePixel);
pixel.a = 1.0f;
texture.SetPixel(i, j, pixel);
}
}
//添加障碍物像素
if (barrierTex != null)
{
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
if (barrierTex.GetPixel(x, y).a != 0)
{
texture.SetPixel(x, y, GetTransparentColor(texture.GetPixel(x, y)));
}
}
}
}
//添加轮廓像素
if (referenceTex != null)
{
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
if (referenceTex.GetPixel(x, y).a == 0)
{
texture.SetPixel(x, y, GetTransparentColor(texture.GetPixel(x, y)));
}
}
}
}
texture.Apply();
return(texture);
}