ExpMapGen/MapEx.cs at master · Notulp/ExpMapGen · GitHub

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using System;

namespace ExpMapGen
{
	public static class MapEx
	{
		public static float[] MinMaxValue(this float[,] self)
		{
			float min = -1;
			float max = -1;
			bool firstRun = true;
			foreach (float current in self) {
				if (firstRun) {
					min = current;
					max = current;
					firstRun = false;
					continue;
				}

				if (min > current)
					min = current;

				if (max < current)
					max = current;
			}
			return new float[]{ min, max };
		}

		public static float GetAvrgValueAt(this float[,] self, float x, float z)
		{
			try {
				int xmin = UnityEngine.Mathf.FloorToInt(x);
				int zmin = UnityEngine.Mathf.FloorToInt(z);
				int xmax = xmin + 1;
				int zmax = zmin + 1;
				float xpercent = GetPercent(xmin, xmax, x);
				float zpercent = GetPercent(zmin, zmax, z);
				float xbw = GetValueAtPercent(self[xmin, zmin], self[xmax, zmin], xpercent);
				float zbw = GetValueAtPercent(self[xmin, zmin], self[xmin, zmax], zpercent);
				return (zbw + xbw) / 2;
			} catch (Exception ex) {
				return 0f;
			}
		}

		public static float GetAvrgValueAt(this float[,,] self, float x, float z, int splattype)
		{
			try {
				int xmin = UnityEngine.Mathf.FloorToInt(x);
				int zmin = UnityEngine.Mathf.FloorToInt(z);
				int xmax = xmin + 1;
				int zmax = zmin + 1;
				float xpercent = GetPercent(xmin, xmax, x);
				float zpercent = GetPercent(zmin, zmax, z);
				float xbw = GetValueAtPercent(self[xmin, zmin, splattype], self[xmax, zmin, splattype], xpercent);
				float zbw = GetValueAtPercent(self[xmin, zmin, splattype], self[xmin, zmax, splattype], zpercent);
				return (zbw + xbw) / 2;
			} catch (Exception ex) {
				return 0f;
			}
		}

		public static float GetAvrgValueAt(this byte[,,] self, float x, float z, int splattype)
		{
			try {
				int xmin = UnityEngine.Mathf.FloorToInt(x);
				int zmin = UnityEngine.Mathf.FloorToInt(z);
				int xmax = xmin + 1;
				int zmax = zmin + 1;
				float xpercent = GetPercent(xmin, xmax, x);
				float zpercent = GetPercent(zmin, zmax, z);
				float xbw = GetValueAtPercent((float)self[xmin, zmin, splattype] / 255f, (float)self[xmax, zmin, splattype] / 255f, xpercent);
				float zbw = GetValueAtPercent((float)self[xmin, zmin, splattype] / 255f, (float)self[xmin, zmax, splattype] / 255f, zpercent);
				return (zbw + xbw) / 2;
			} catch (Exception ex) {
				return 0f;
			}
		}

		public static float GetPercent(float min, float max, float pointbetween)
		{
			return (pointbetween - min) / ((max - min) / 100);
		}

		public static float GetValueAtPercent(float min, float max, float percent)
		{
			return ((max - min) / 100) * percent + min;
		}
	}
}