/// <summary>
/// 判断指定大小的两组像素是否相交
/// </summary>
///
/// <param name="rectA"></param>
/// <param name="dataA"></param>
/// <param name="rectB"></param>
/// <param name="dataB"></param>
/// <returns></returns>
public static bool Intersect(RectBox rectA, int[] dataA, RectBox rectB,
int[] dataB)
{
int top = (int)Loon.Utils.MathUtils.Max(rectA.GetY(), rectB.GetY());
int bottom = (int)Loon.Utils.MathUtils.Min(rectA.GetBottom(), rectB.GetBottom());
int left = (int)Loon.Utils.MathUtils.Max(rectA.GetX(), rectB.GetX());
int right = (int)Loon.Utils.MathUtils.Min(rectA.GetRight(), rectB.GetRight());
for (int y = top; y < bottom; y++)
{
for (int x = left; x < right; x++)
{
int colorA = dataA[(int)((x - rectA.x) + (y - rectA.y)
* rectA.width)];
int colorB = dataB[(int)((x - rectB.x) + (y - rectB.y)
* rectB.width)];
if ((int)(((uint)colorA) >> 24) != 0 && (int)(((uint)colorB) >> 24) != 0)
{
return(true);
}
}
}
return(false);
}
protected internal void DrawChar(SpriteBatch batch, float x, float y, RectBox glyph,
RectBox cropping, LColor color)
{
batch.Draw(texture, x + cropping.x, y + cropping.y, glyph.GetWidth(),
glyph.GetHeight(), glyph.GetX(), glyph.GetY(),
glyph.GetWidth(), glyph.GetHeight(), color);
}
public void AddObject(Actor actor)
{
RectBox bounds = this.GetActorBounds(actor);
float by;
if (this.bspTree == null)
{
byte treeArea;
if (bounds.width > bounds.height)
{
treeArea = 0;
by = bounds.GetMiddleX();
}
else
{
treeArea = 1;
by = bounds.GetMiddleY();
}
this.bspTree = GetBSPNode();
this.bspTree.GetArea().Copy(bounds);
this.bspTree.SetSplitAxis(treeArea);
this.bspTree.SetSplitPos(by);
this.bspTree.AddActor(actor);
}
else
{
int idx = 0;
RectBox treeArea1 = this.bspTree.GetArea();
RectBox result1 = new RectBox();
RectBox result2 = new RectBox();
for (; !treeArea1.Contains(bounds) && idx < MAX_SIZE;)
{
RectBox newArea;
BSPCollisionNode newTop;
if (bounds.GetX() < treeArea1.GetX())
{
by = (treeArea1.GetX() - treeArea1.width);
newArea = new RectBox(by, treeArea1.GetY(),
treeArea1.GetRight() - by, treeArea1.height);
newTop = GetBSPNode();
newTop.GetArea().Copy(newArea);
newTop.SetSplitAxis(0);
newTop.SetSplitPos(treeArea1.GetX());
newTop.SetChild(1, this.bspTree);
this.bspTree = newTop;
treeArea1 = newArea;
}
if (bounds.GetRight() > treeArea1.GetRight())
{
by = (treeArea1.GetRight() + treeArea1.width);
newArea = new RectBox(treeArea1.GetX(), treeArea1.GetY(),
by - treeArea1.GetX(), treeArea1.height);
newTop = GetBSPNode();
newTop.GetArea().Copy(newArea);
newTop.SetSplitAxis(0);
newTop.SetSplitPos(treeArea1.GetRight());
newTop.SetChild(0, this.bspTree);
this.bspTree = newTop;
treeArea1 = newArea;
}
if (bounds.GetY() < treeArea1.GetY())
{
by = (treeArea1.GetY() - treeArea1.height);
newArea = new RectBox(treeArea1.GetX(), by,
treeArea1.width, treeArea1.GetBottom() - by);
newTop = GetBSPNode();
newTop.GetArea().Copy(newArea);
newTop.SetSplitAxis(1);
newTop.SetSplitPos(treeArea1.GetY());
newTop.SetChild(1, this.bspTree);
this.bspTree = newTop;
treeArea1 = newArea;
}
if (bounds.GetBottom() > treeArea1.GetBottom())
{
by = (treeArea1.GetBottom() + treeArea1.height);
newArea = new RectBox(treeArea1.GetX(), treeArea1.GetY(),
treeArea1.width, by - treeArea1.GetY());
newTop = GetBSPNode();
newTop.GetArea().Copy(newArea);
newTop.SetSplitAxis(1);
newTop.SetSplitPos(treeArea1.GetBottom());
newTop.SetChild(0, this.bspTree);
this.bspTree = newTop;
treeArea1 = newArea;
}
idx++;
}
this.InsertObject(actor, bounds, bounds, treeArea1, this.bspTree,
result1, result2);
}
}
public int GetY()
{
return((int)bounds.GetY());
}
