/// <summary>
/// 判定指定的两张图片之间是否产生了碰撞
/// </summary>
///
/// <param name="src"></param>
/// <param name="x1"></param>
/// <param name="y1"></param>
/// <param name="dest"></param>
/// <param name="x2"></param>
/// <param name="y2"></param>
/// <returns></returns>
public bool isPixelCollide(LImage src, float x1, float y1, LImage dest,
float x2, float y2)
{
float width1 = x1 + src.GetWidth() - 1, height1 = y1 + src.GetHeight()
- 1, width2 = x2 + dest.GetWidth() - 1, height2 = y2
+ dest.GetHeight() - 1;
int xstart = (int)Loon.Utils.MathUtils.Max(x1, x2), ystart = (int)Loon.Utils.MathUtils.Max(y1, y2), xend = (int)Loon.Utils.MathUtils.Min(width1, width2), yend = (int)Loon.Utils.MathUtils.Min(height1, height2);
int toty = Loon.Utils.MathUtils.Abs(yend - ystart);
int totx = Loon.Utils.MathUtils.Abs(xend - xstart);
for (int y = 1; y < toty - 1; y++)
{
int ny = Loon.Utils.MathUtils.Abs(ystart - (int)y1) + y;
int ny1 = Loon.Utils.MathUtils.Abs(ystart - (int)y2) + y;
for (int x = 1; x < totx - 1; x++)
{
int nx = Loon.Utils.MathUtils.Abs(xstart - (int)x1) + x;
int nx1 = Loon.Utils.MathUtils.Abs(xstart - (int)x2) + x;
try
{
if (((src.GetPixel(nx, ny).PackedValue != LSystem.TRANSPARENT))
&& ((dest.GetPixel(nx1, ny1).PackedValue != LSystem.TRANSPARENT)))
{
return true;
}
}
catch (Exception e)
{
Loon.Utils.Debugging.Log.Exception(e);
}
}
}
return false;
}