public static SampledColorGradient2D GenerateRandom(Vector2Int size, int colorAreaCount, int blurRadius)
{
SampledColorGradient2D output = new SampledColorGradient2D();
output.blurRadius = blurRadius;
output.size = size;
output.colors = new Color[size.x * size.y];
List <Vector2Int> remainingPositions = new List <Vector2Int>();
for (int x = 0; x < size.x; x++)
{
for (int y = 0; y < size.y; y++)
{
remainingPositions.Add(new Vector2Int(x, y));
}
}
for (int i = 0; i < colorAreaCount; i++)
{
ColorArea colorArea = new ColorArea();
colorArea.origin = new Vector2Int(Random.Range(0, size.x), Random.Range(0, size.y));
colorArea.edgePositions.Add(colorArea.origin);
colorArea.color = ColorExtensions.RandomColor(); //.SetAlpha(Random.value);
output.colorAreas = output.colorAreas.Add(colorArea);
remainingPositions.Remove(colorArea.origin);
output.colors[colorArea.origin.x + colorArea.origin.y * size.x] = colorArea.color;
}
while (remainingPositions.Count > 0)
{
for (int i = 0; i < colorAreaCount; i++)
{
ColorArea colorArea = output.colorAreas[i];
int edgePositionCount = colorArea.edgePositions.Count;
if (edgePositionCount > 0)
{
for (int i2 = 0; i2 < edgePositionCount; i2++)
{
Vector2Int edgePosition = colorArea.edgePositions[i2];
output.TryToSpreadColorAreaToPosition(ref colorArea, edgePosition + Vector2Int.right, ref remainingPositions);
output.TryToSpreadColorAreaToPosition(ref colorArea, edgePosition + Vector2Int.left, ref remainingPositions);
output.TryToSpreadColorAreaToPosition(ref colorArea, edgePosition + Vector2Int.up, ref remainingPositions);
output.TryToSpreadColorAreaToPosition(ref colorArea, edgePosition + Vector2Int.down, ref remainingPositions);
colorArea.edgePositions.Remove(edgePosition);
edgePositionCount--;
}
output.colorAreas[i] = colorArea;
}
}
}
return(output);
}
public virtual void GenerateRandom()
{
sampledColorGradient = SampledColorGradient2D.GenerateRandom(textureSize, colorAreaCount, blurRadius);
}
