/* EXPORT-> HDrawArc: Draw arc from stAngle thru arcAngle degrees */
void HDrawArc(int x0, int y0, int x1, int y1, int stAngle, int arcAngle)
{
int Center_x = (x0+x1)/2;
int Center_y = (y0+y1)/2;
int StartArc_x, StartArc_y;
int EndArc_x, EndArc_y;
int radius; /* major axis */
double startAngle, endAngle,convrt = PI/180; /* degrees to radians */
HGDIOBJ oldObject = SelectObject(memDC,thePen);
HDC dc = GetDC(theWindow);
CheckCorners(&x0,&y0,&x1,&y1);
startAngle = stAngle *convrt;
endAngle=(arcAngle+stAngle)*convrt;
radius = (((x1-x0) > (y1-y0)) ? x1-x0 : y1-y0)/2;
StartArc_x = Center_x + (int) (radius * cos((double) startAngle));
StartArc_y = Center_y - (int) (radius * sin((double) startAngle));
EndArc_x = Center_x + (int) (radius * cos((double) endAngle));
EndArc_y = Center_y - (int) (radius * sin((double) endAngle));
Arc(memDC,x0,y0,x1,y1,StartArc_x,StartArc_y,EndArc_x,EndArc_y);
SelectObject(memDC,oldObject);
oldObject = SelectObject(dc,thePen);
Arc(dc,x0,y0,x1,y1,StartArc_x,StartArc_y,EndArc_x,EndArc_y);
SelectObject(dc,oldObject);
ReleaseDC(theWindow,dc);
}
void BuildPlacements(const TileCorner& knight)
{
BuildHashes();
// Now that we've got our hashes set up, start from the knight's corner
// and search side objects, looking to see if any corners match any
// inside mAllPlacements.
CheckCorners(knight);
}
/* EXPORT-> HFillArc: Draw filled arc from stAngle thru arcAngle degrees */
void HFillArc(int x0,int y0,int x1,int y1,int stAngle,int arcAngle)
{
unsigned int rw, rh;
CheckCorners(&x0,&y0,&x1,&y1);
/* calculate width and height */
rw = abs(x1 - x0); rh = abs(y1 - y0);
/* the angles are signed integers in 64ths of a degree */
stAngle *=64; arcAngle*=64;
XFillArc(theDisp, theWindow, theGC, x0, y0, rw, rh, stAngle, arcAngle);
}
/* EXPORT-> HFillRectangle: fill a rectangle */
void HFillRectangle(int x0, int y0, int x1, int y1)
{
HDC dc = GetDC(theWindow);
HGDIOBJ oldBrush = SelectObject(memDC,theBrush);
HGDIOBJ oldPen = SelectObject(memDC,thinPen);
CheckCorners(&x0,&y0,&x1,&y1);
Rectangle(memDC,x0,y0,x1,y1);
SelectObject(memDC,oldBrush);
SelectObject(memDC,oldPen);
oldBrush = SelectObject(dc,theBrush);
oldPen = SelectObject(dc,thinPen);
Rectangle(dc,x0,y0,x1,y1);
SelectObject(dc,oldBrush);
SelectObject(dc,oldPen);
ReleaseDC(theWindow,dc);
}
/* EXPORT-> HDrawRectangle: draw a rectangle */
void HDrawRectangle(int x0, int y0, int x1, int y1)
{
POINT points[5];
HGDIOBJ oldObject = SelectObject(memDC,thePen);
HDC dc = GetDC(theWindow);
CheckCorners(&x0,&y0,&x1,&y1);
points[0].x = x0; points[0].y = y0;
points[1].x = x0; points[1].y = y1;
points[2].x = x1; points[2].y = y1;
points[3].x = x1; points[3].y = y0;
points[4].x = x0; points[4].y = y0;
Polyline(memDC, points, 5);
SelectObject(memDC,oldObject);
oldObject = SelectObject(dc,thePen);
Polyline(dc, points, 5);
SelectObject(dc,oldObject);
ReleaseDC(theWindow,dc);
}
/* EXPORT-> HFillArc: Draw filled arc from stAngle thru arcAngle degrees */
void HFillArc(int x0,int y0,int x1,int y1,int stAngle,int arcAngle)
{
int radius;
int Center_x = (x0+x1)/2;
int Center_y = (y0+y1)/2;
int StartArc_x,StartArc_y;
int EndArc_x,EndArc_y;
HGDIOBJ oldBrush = SelectObject(memDC,theBrush);
HGDIOBJ oldPen = SelectObject(memDC,thinPen);
HDC dc = GetDC(theWindow);
double startAngle, endAngle,convrt = PI/180; /* degrees to radians */
CheckCorners(&x0,&y0,&x1,&y1);
/* calculate point locations */
startAngle = stAngle*convrt;
endAngle = (stAngle+arcAngle)*convrt;
radius = (((x1-x0) > (y1-y0)) ? x1-x0 : y1-y0)/2;
StartArc_x = Center_x + (int) (radius * cos((double) startAngle));
StartArc_y = Center_y - (int) (radius * sin((double) startAngle));
EndArc_x = Center_x + (int) (radius * cos((double) endAngle));
EndArc_y = Center_y - (int) (radius * sin((double) endAngle));
Pie(memDC,x0,y0,x1,y1,StartArc_x,StartArc_y,EndArc_x,EndArc_y);
SelectObject(memDC,oldBrush);
SelectObject(memDC,oldPen);
oldBrush = SelectObject(dc,theBrush);
oldPen = SelectObject(dc,thinPen);
Pie(dc,x0,y0,x1,y1,StartArc_x,StartArc_y,EndArc_x,EndArc_y);
SelectObject(dc,oldBrush);
SelectObject(dc,oldPen);
ReleaseDC(theWindow,dc);
}
/* EXPORT-> HFillRectangle: fill a rectangle */
void HFillRectangle(int x0, int y0, int x1, int y1)
{
CheckCorners(&x0,&y0,&x1,&y1);
XFillRectangle(theDisp, theWindow, theGC, x0, y0, x1 - x0, y1 - y0);
}