/// <summary>
/// �ж�ָ����С�����������Ƿ��ཻ
/// </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;
}
private bool Intersects(RectBox other)
{
RectBox box = other;
Circle circle = this;
if (box.Contains(x + radius, y + radius))
{
return(true);
}
float x1 = box.GetX();
float y1 = box.GetY();
float x2 = box.GetX() + box.GetWidth();
float y2 = box.GetY() + box.GetHeight();
Line[] lines = new Line[4];
lines[0] = new Line(x1, y1, x2, y1);
lines[1] = new Line(x2, y1, x2, y2);
lines[2] = new Line(x2, y2, x1, y2);
lines[3] = new Line(x1, y2, x1, y1);
float r2 = circle.GetRadius() * circle.GetRadius();
Vector2f pos = new Vector2f(circle.GetCenterX(), circle.GetCenterY());
for (int i = 0; i < 4; i++)
{
float dis = lines[i].DistanceSquared(pos);
if (dis < r2)
{
return(true);
}
}
return(false);
}
public static RectBox GetIntersection(RectBox a, RectBox b)
{
float a_x = a.GetX();
float a_r = a.GetRight();
float a_y = a.GetY();
float a_t = a.GetBottom();
float b_x = b.GetX();
float b_r = b.GetRight();
float b_y = b.GetY();
float b_t = b.GetBottom();
float i_x = MathUtils.Max(a_x, b_x);
float i_r = MathUtils.Min(a_r, b_r);
float i_y = MathUtils.Max(a_y, b_y);
float i_t = MathUtils.Min(a_t, b_t);
return (i_x < i_r && i_y < i_t) ? new RectBox(i_x, i_y, i_r - i_x, i_t
- i_y) : null;
}
public static RectBox GetIntersection(RectBox a, RectBox b)
{
float a_x = a.GetX();
float a_r = a.GetRight();
float a_y = a.GetY();
float a_t = a.GetBottom();
float b_x = b.GetX();
float b_r = b.GetRight();
float b_y = b.GetY();
float b_t = b.GetBottom();
float i_x = MathUtils.Max(a_x, b_x);
float i_r = MathUtils.Min(a_r, b_r);
float i_y = MathUtils.Max(a_y, b_y);
float i_t = MathUtils.Min(a_t, b_t);
return((i_x < i_r && i_y < i_t) ? new RectBox(i_x, i_y, i_r - i_x, i_t
- i_y) : null);
}
public static RectBox GetIntersection(RectBox a, RectBox b, RectBox result)
{
float a_x = a.GetX();
float a_r = a.GetRight();
float a_y = a.GetY();
float a_t = a.GetBottom();
float b_x = b.GetX();
float b_r = b.GetRight();
float b_y = b.GetY();
float b_t = b.GetBottom();
float i_x = MathUtils.Max(a_x, b_x);
float i_r = MathUtils.Min(a_r, b_r);
float i_y = MathUtils.Max(a_y, b_y);
float i_t = MathUtils.Min(a_t, b_t);
if (i_x < i_r && i_y < i_t) {
result.SetBounds(i_x, i_y, i_r - i_x, i_t - i_y);
return result;
}
return null;
}
public static RectBox GetIntersection(RectBox a, RectBox b, RectBox result)
{
float a_x = a.GetX();
float a_r = a.GetRight();
float a_y = a.GetY();
float a_t = a.GetBottom();
float b_x = b.GetX();
float b_r = b.GetRight();
float b_y = b.GetY();
float b_t = b.GetBottom();
float i_x = MathUtils.Max(a_x, b_x);
float i_r = MathUtils.Min(a_r, b_r);
float i_y = MathUtils.Max(a_y, b_y);
float i_t = MathUtils.Min(a_t, b_t);
if (i_x < i_r && i_y < i_t)
{
result.SetBounds(i_x, i_y, i_r - i_x, i_t - i_y);
return(result);
}
return(null);
}
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);
}
