void Awake()
{
currentBrush = PenBrush; //默认笔刷
drawableSprite = this.GetComponent <SpriteRenderer>().sprite;
drawableTexture = drawableSprite.texture;
cleanColorArray = new Color[(int)drawableSprite.rect.width * (int)drawableSprite.rect.height]; //重置时Texture2D的颜色
for (int x = 0; x < cleanColorArray.Length; x++)
{
cleanColorArray[x] = resetColour;
}
}
//设置画笔绑定的绘制函数
public void SetPenBrush()
{
currentBrush = PenBrush;
}
public static void Build <T>(List <Segment> segments, int mask, float samplingStep, int strokeSize, BrushFunction <T> brushFunction, int mapSize, WorldToMapCoords worldToMapCoords, T[,] map)
{
Stroke stroke = new Stroke();
stroke.halfSize = Mathf.CeilToInt(strokeSize * 0.5f);
stroke.halfSize2 = stroke.halfSize * stroke.halfSize;
HashSet <Segment> visited = new HashSet <Segment>();
foreach (var segment in segments)
{
RoadNetworkTraversal.PreOrder(segment, (s0) =>
{
stroke.segment = s0;
stroke.segmentDirection = (s0.End - s0.Start) / s0.Length;
int numSteps = Mathf.CeilToInt(s0.Length / samplingStep);
var segmentStep = 1.0f / numSteps;
var positionIncrement = s0.Length / numSteps * stroke.segmentDirection;
stroke.segmentStep = 0;
stroke.segmentCoords = s0.Start;
int x, y;
for (int step = 0; step < numSteps; step++, stroke.segmentCoords += positionIncrement, stroke.segmentStep += segmentStep)
{
if (!worldToMapCoords(stroke.segmentCoords.x, stroke.segmentCoords.y, out x, out y))
{
break;
}
stroke.x = x;
stroke.y = y;
brushFunction(stroke, mapSize, map);
}
return(true);
}, mask, ref visited);
}
}
