namespace ColdMint.scripts.map.preview;
using Godot;
public static class RoomPreview
{
///
/// Create Image
/// 创建图像
///
///
///
public static ImageTexture? CreateImage(TileMapLayer? groundTileMapLayer)
{
if (groundTileMapLayer == null)
{
return null;
}
//Calculate the size of the image.
//计算图像的尺寸。
//The width is maxX minX and the height is maxY minY.
//宽度为maxX-minX,高度为maxY-minY。
var maxY = int.MinValue;
var maxX = int.MinValue;
var minY = int.MaxValue;
var minX = int.MaxValue;
var cellsArray = groundTileMapLayer.GetUsedCells();
foreach (var vector2I in cellsArray)
{
if (vector2I.Y > maxY)
{
maxY = vector2I.Y;
}
if (vector2I.Y < minY)
{
minY = vector2I.Y;
}
if (vector2I.X > maxX)
{
maxX = vector2I.X;
}
if (vector2I.X < minX)
{
minX = vector2I.X;
}
}
var height = maxY - minY;
var width = maxX - minX;
var offsetVector2 = Vector2I.Zero - new Vector2I(minX, minY);
//Create an image.
//创建image。
var image = Image.CreateEmpty(width + 1, height + 1, false, Image.Format.Rgba8);
//image.Fill(Colors.Green);
//Fill in pixels
//填充像素点
foreach (var vector2I in cellsArray)
{
image.SetPixel(vector2I.X + offsetVector2.X, vector2I.Y + offsetVector2.Y, new Color(100, 221, 23));
}
//Create texture.
//创建texture
return ImageTexture.CreateFromImage(image);
}
}