| 1 |
693 |
jeremybenn |
/* { dg-do compile } */
|
| 2 |
|
|
/* { dg-options "-O2 -ftree-tail-merge" } */
|
| 3 |
|
|
typedef int BoxCoordinate;
|
| 4 |
|
|
typedef int BoxDimension;
|
| 5 |
|
|
const BoxDimension X = 0;
|
| 6 |
|
|
const BoxDimension Y = 1;
|
| 7 |
|
|
const BoxDimension NDimensions = 2;
|
| 8 |
|
|
class BoxPoint {
|
| 9 |
|
|
BoxCoordinate point[NDimensions];
|
| 10 |
|
|
public:
|
| 11 |
|
|
bool isValid() const;
|
| 12 |
|
|
void operator += (const BoxPoint& p) {
|
| 13 |
|
|
if (isValid() && p.isValid()) {
|
| 14 |
|
|
point[X] += p.point[X];
|
| 15 |
|
|
}
|
| 16 |
|
|
}
|
| 17 |
|
|
const BoxCoordinate& operator [] (const BoxDimension& dimension) const {
|
| 18 |
|
|
return point[dimension];
|
| 19 |
|
|
}
|
| 20 |
|
|
};
|
| 21 |
|
|
class BoxRegion {
|
| 22 |
|
|
public:
|
| 23 |
|
|
BoxCoordinate& origin(BoxDimension d) const;
|
| 24 |
|
|
BoxCoordinate& space(BoxDimension d) const;
|
| 25 |
|
|
};
|
| 26 |
|
|
inline bool operator <= (const BoxPoint& p, const BoxRegion& r) {
|
| 27 |
|
|
for (BoxDimension d = X;
|
| 28 |
|
|
d <= Y;
|
| 29 |
|
|
d++) if (p[d] < r.origin(d) || p[d] >= r.origin(d) + r.space(d))
|
| 30 |
|
|
return false;
|
| 31 |
|
|
return true;
|
| 32 |
|
|
}
|
| 33 |
|
|
typedef struct _WidgetRec *Widget;
|
| 34 |
|
|
struct GraphGC {
|
| 35 |
|
|
BoxPoint offsetIfSelected;
|
| 36 |
|
|
};
|
| 37 |
|
|
class GraphNode;
|
| 38 |
|
|
class GraphEdge {
|
| 39 |
|
|
public:
|
| 40 |
|
|
GraphNode *from() const;
|
| 41 |
|
|
GraphNode *to() const;
|
| 42 |
|
|
};
|
| 43 |
|
|
class LineGraphEdge: public GraphEdge {
|
| 44 |
|
|
protected:
|
| 45 |
|
|
virtual void drawLine(Widget w, const GraphGC& gc) const;
|
| 46 |
|
|
void _print(const GraphGC &gc) const;
|
| 47 |
|
|
};
|
| 48 |
|
|
class ArcGraphEdge: public LineGraphEdge {
|
| 49 |
|
|
static bool center(const BoxPoint& p1, const BoxPoint& p2,
|
| 50 |
|
|
const BoxPoint& p3, double& x, double& y);
|
| 51 |
|
|
void makeLine(Widget w, const GraphGC& gc) const;
|
| 52 |
|
|
};
|
| 53 |
|
|
class GraphNode {
|
| 54 |
|
|
public:
|
| 55 |
|
|
bool& selected();
|
| 56 |
|
|
GraphEdge *firstTo() const;
|
| 57 |
|
|
GraphEdge *nextTo(GraphEdge *ref) const;
|
| 58 |
|
|
virtual const BoxPoint& pos() const = 0;
|
| 59 |
|
|
virtual const BoxRegion& region(const GraphGC& gc) const = 0;
|
| 60 |
|
|
virtual bool isHint() const;
|
| 61 |
|
|
};
|
| 62 |
|
|
class PosGraphNode: public GraphNode { };
|
| 63 |
|
|
class RegionGraphNode: public PosGraphNode { };
|
| 64 |
|
|
class HintGraphNode: public RegionGraphNode { };
|
| 65 |
|
|
void ArcGraphEdge::makeLine(Widget w, const GraphGC& gc) const {
|
| 66 |
|
|
HintGraphNode *arc_hint = 0;
|
| 67 |
|
|
RegionGraphNode *arc_from = 0;
|
| 68 |
|
|
RegionGraphNode *arc_to = 0;
|
| 69 |
|
|
bool make_arc = true;
|
| 70 |
|
|
if (from()->isHint() && to()->isHint()) {
|
| 71 |
|
|
make_arc = false;
|
| 72 |
|
|
}
|
| 73 |
|
|
else if (from()->isHint() && from()->firstTo() != 0) {
|
| 74 |
|
|
if (arc_hint == 0 || arc_from == 0 || arc_to == 0
|
| 75 |
|
|
|| arc_hint->nextTo(arc_hint->firstTo()) != 0) {
|
| 76 |
|
|
make_arc = false;
|
| 77 |
|
|
}
|
| 78 |
|
|
}
|
| 79 |
|
|
if (!make_arc) {
|
| 80 |
|
|
if (w != 0) LineGraphEdge::drawLine(w, gc);
|
| 81 |
|
|
else LineGraphEdge::_print(gc);
|
| 82 |
|
|
return;
|
| 83 |
|
|
}
|
| 84 |
|
|
BoxPoint pos_from = arc_from->pos();
|
| 85 |
|
|
BoxRegion region_from = arc_from->region(gc);
|
| 86 |
|
|
BoxPoint pos_to = arc_to->pos();
|
| 87 |
|
|
BoxRegion region_to = arc_to->region(gc);
|
| 88 |
|
|
BoxPoint pos_hint = arc_hint->pos();
|
| 89 |
|
|
if (arc_hint->selected()) {
|
| 90 |
|
|
pos_hint += gc.offsetIfSelected;
|
| 91 |
|
|
}
|
| 92 |
|
|
if (pos_hint <= region_from || pos_hint <= region_to) {
|
| 93 |
|
|
return;
|
| 94 |
|
|
}
|
| 95 |
|
|
double cx, cy;
|
| 96 |
|
|
bool ok = center(pos_from, pos_hint, pos_to, cx, cy);
|
| 97 |
|
|
if (!ok) {
|
| 98 |
|
|
if (w != 0) LineGraphEdge::drawLine(w, gc);
|
| 99 |
|
|
else LineGraphEdge::_print(gc);
|
| 100 |
|
|
}
|
| 101 |
|
|
}
|
