//-----------------------------------------------------IntersectRectangles
public void IntersectRectangles(RectI r1, RectI r2)
{
x1 = r1.x1;
y1 = r1.y1;
x2 = r1.x2;
x2 = r1.y2;
// First process m_x2,m_y2 because the other order
// results in Internal Compiler Error under
// Microsoft Visual C++ .NET 2003 69462-335-0000007-18038 in
// case of "Maximize Speed" optimization option.
//-----------------
if (x2 > r2.x2)
{
x2 = r2.x2;
}
if (y2 > r2.y2)
{
y2 = r2.y2;
}
if (x1 < r2.x1)
{
x1 = r2.x1;
}
if (y1 < r2.y1)
{
y1 = r2.y1;
}
}
//--------------------------------------------------------------------
public VectorClipper_DoClip()
{
m_clip_box = new RectI(0, 0, 0, 0);
m_x1 = (0);
m_y1 = (0);
m_f1 = (0);
m_clipping = (false);
}
//--------------------------------------------------------------------
public VectorClipper_DoClip()
{
m_clip_box = new RectI(0,0,0,0);
m_x1 = (0);
m_y1 = (0);
m_f1 = (0);
m_clipping = (false);
}
public bool Clip(RectI r)
{
if (x2 > r.x2)
{
x2 = r.x2;
}
if (y2 > r.y2)
{
y2 = r.y2;
}
if (x1 < r.x1)
{
x1 = r.x1;
}
if (y1 < r.y1)
{
y1 = r.y1;
}
return(x1 <= x2 && y1 <= y2);
}
//---------------------------------------------------------UniteRectangles
public void UniteRectangles(RectI r1, RectI r2)
{
x1 = r1.x1;
y1 = r1.y1;
x2 = r1.x2;
x2 = r1.y2;
if (x2 < r2.x2)
{
x2 = r2.x2;
}
if (y2 < r2.y2)
{
y2 = r2.y2;
}
if (x1 > r2.x1)
{
x1 = r2.x1;
}
if (y1 > r2.y1)
{
y1 = r2.y1;
}
}
public override void Attach(IPixelFormat ren)
{
base.Attach(ren);
m_clip_box = new RectI(0, 0, (int)ren.Width - 1, (int)ren.Height - 1);
}
//--------------------------------------------------------------------
//public IPixelFormat ren() { return m_ren; }
//--------------------------------------------------------------------
public bool SetClippingBox(int x1, int y1, int x2, int y2)
{
RectI cb = new RectI(x1, y1, x2, y2);
cb.Normalize();
if (cb.Clip(new RectI(0, 0, (int)Width - 1, (int)Height - 1)))
{
m_clip_box = cb;
return true;
}
m_clip_box.x1 = 1;
m_clip_box.y1 = 1;
m_clip_box.x2 = 0;
m_clip_box.y2 = 0;
return false;
}
public void CopyFrom(RasterBuffer src,
RectI rect_src_ptr,
int dx,
int dy)
{
RectI rsrc = new RectI(rect_src_ptr.x1, rect_src_ptr.y1, rect_src_ptr.x2 + 1, rect_src_ptr.y2 + 1);
// Version with xdst, ydst (absolute positioning)
//RectI rdst(xdst, ydst, xdst + rsrc.x2 - rsrc.x1, ydst + rsrc.y2 - rsrc.y1);
// Version with dx, dy (relative positioning)
RectI rdst = new RectI(rsrc.x1 + dx, rsrc.y1 + dy, rsrc.x2 + dx, rsrc.y2 + dy);
RectI rc = ClipRectangleArea(ref rdst, ref rsrc, (int)src.Width(), (int)src.Height());
if(rc.x2 > 0)
{
int incy = 1;
if(rdst.y1 > rsrc.y1)
{
rsrc.y1 += rc.y2 - 1;
rdst.y1 += rc.y2 - 1;
incy = -1;
}
while(rc.y2 > 0)
{
base.CopyFrom(src,
rdst.x1, rdst.y1,
rsrc.x1, rsrc.y1,
(uint)rc.x2);
rdst.y1 += incy;
rsrc.y1 += incy;
--rc.y2;
}
}
}
//--------------------------------------------------------------------
public FormatClippingProxy(IPixelFormat ren)
: base(ren)
{
m_clip_box = new RectI(0, 0, (int)ren.Width - 1, (int)ren.Height - 1);
}
public RectI ClipRectangleArea(ref RectI dst, ref RectI src, int wsrc, int hsrc)
{
RectI rc = new RectI(0,0,0,0);
RectI cb = ClipBox;
++cb.x2;
++cb.y2;
if(src.x1 < 0)
{
dst.x1 -= src.x1;
src.x1 = 0;
}
if(src.y1 < 0)
{
dst.y1 -= src.y1;
src.y1 = 0;
}
if(src.x2 > wsrc) src.x2 = wsrc;
if(src.y2 > hsrc) src.y2 = hsrc;
if(dst.x1 < cb.x1)
{
src.x1 += cb.x1 - dst.x1;
dst.x1 = cb.x1;
}
if(dst.y1 < cb.y1)
{
src.y1 += cb.y1 - dst.y1;
dst.y1 = cb.y1;
}
if(dst.x2 > cb.x2) dst.x2 = cb.x2;
if(dst.y2 > cb.y2) dst.y2 = cb.y2;
rc.x2 = dst.x2 - dst.x1;
rc.y2 = dst.y2 - dst.y1;
if(rc.x2 > src.x2 - src.x1) rc.x2 = src.x2 - src.x1;
if(rc.y2 > src.y2 - src.y1) rc.y2 = src.y2 - src.y1;
return rc;
}
//--------------------------------------------------------------------
public void ClipBox(int x1, int y1, int x2, int y2)
{
m_clip_box = new RectI(x1, y1, x2, y2);
m_clip_box.Normalize();
m_clipping = true;
}
//---------------------------------------------------------UniteRectangles
public void UniteRectangles(RectI r1, RectI r2)
{
x1 = r1.x1;
y1 = r1.y1;
x2 = r1.x2;
x2 = r1.y2;
if (x2 < r2.x2) x2 = r2.x2;
if (y2 < r2.y2) y2 = r2.y2;
if (x1 > r2.x1) x1 = r2.x1;
if (y1 > r2.y1) y1 = r2.y1;
}
//-----------------------------------------------------IntersectRectangles
public void IntersectRectangles(RectI r1, RectI r2)
{
x1 = r1.x1;
y1 = r1.y1;
x2 = r1.x2;
x2 = r1.y2;
// First process m_x2,m_y2 because the other order
// results in Internal Compiler Error under
// Microsoft Visual C++ .NET 2003 69462-335-0000007-18038 in
// case of "Maximize Speed" optimization option.
//-----------------
if (x2 > r2.x2) x2 = r2.x2;
if (y2 > r2.y2) y2 = r2.y2;
if (x1 < r2.x1) x1 = r2.x1;
if (y1 < r2.y1) y1 = r2.y1;
}
public bool Clip(RectI r)
{
if (x2 > r.x2) x2 = r.x2;
if (y2 > r.y2) y2 = r.y2;
if (x1 < r.x1) x1 = r.x1;
if (y1 < r.y1) y1 = r.y1;
return x1 <= x2 && y1 <= y2;
}
//--------------------------------------------------------------------
public void ClipBox(int x1, int y1, int x2, int y2)
{
m_clip_box = new RectI(x1, y1, x2, y2);
m_clip_box.Normalize();
m_clipping = true;
}
