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00020 #ifndef GV_GEOM_H
00021 #define GV_GEOM_H
00022
00023 #ifdef HAVE_CONFIG_H
00024 #include "arith.h"
00025 #endif
00026
00027 #ifdef __cplusplus
00028 extern "C" {
00029 #endif
00030
00031 typedef struct { int x, y; } point;
00032
00033 typedef struct pointf_s { double x, y; } pointf;
00034
00035
00036 #define HAVE_POINTF_S
00037
00038 typedef struct { point LL, UR; } box;
00039
00040 typedef struct { pointf LL, UR; } boxf;
00041
00042 #ifdef HAVE_CONFIG_H
00043
00044 #define INSIDE(p,b) (BETWEEN((b).LL.x,(p).x,(b).UR.x) && BETWEEN((b).LL.y,(p).y,(b).UR.y))
00045
00046 #define OVERLAP(b0,b1) (((b0).UR.x >= (b1).LL.x) && ((b1).UR.x >= (b0).LL.x) && ((b0).UR.y >= (b1).LL.y) && ((b1).UR.y >= (b0).LL.y))
00047
00048 #define CONTAINS(b0,b1) (((b0).UR.x >= (b1).UR.x) && ((b0).UR.y >= (b1).UR.y) && ((b0).LL.x <= (b1).LL.x) && ((b0).LL.y <= (b1).LL.y))
00049
00050
00051 #define EXPANDBP(b, p) (b.LL.x = MIN(b.LL.x, p.x), b.LL.y = MIN(b.LL.y, p.y), b.UR.x = MAX(b.UR.x, p.x), b.UR.y = MAX(b.UR.y, p.y))
00052
00053 #define EXPANDBB(b0, b1) (b0.LL.x = MIN(b0.LL.x, b1.LL.x), b0.LL.y = MIN(b0.LL.y, b1.LL.y), b0.UR.x = MAX(b0.UR.x, b1.UR.x), b0.UR.y = MAX(b0.UR.y, b1.UR.y))
00054
00055 #define CLIPBB(b0, b1) (b0.LL.x = MAX(b0.LL.x, b1.LL.x), b0.LL.y = MAX(b0.LL.y, b1.LL.y), b0.UR.x = MIN(b0.UR.x, b1.UR.x), b0.UR.y = MIN(b0.UR.y, b1.UR.y))
00056
00057 #define DIST2(p1,p2) (SQR((p1.x) - (p2.x))) + (SQR((p1.y) - (p2.y)))
00058 #define DIST(p1,p2) (sqrt(DIST2((p1),(p2))))
00059
00060 #define POINTS_PER_INCH 72
00061 #define POINTS_PER_PC ((double)POINTS_PER_INCH / 6)
00062 #define POINTS_PER_CM ((double)POINTS_PER_INCH * 0.393700787)
00063 #define POINTS_PER_MM ((double)POINTS_PER_INCH * 0.0393700787)
00064
00065 #define POINTS(f_inch) (ROUND((f_inch)*POINTS_PER_INCH))
00066 #define PS2INCH(ps) ((ps)/(double)POINTS_PER_INCH)
00067
00068 #define P2PF(p, pf) (pf.x = p.x, pf.y = p.y)
00069 #define PF2P(pf, p) (p.x = ROUND (pf.x), p.y = ROUND (pf.y))
00070 #define B2BF(b, bf) (bf.LL.x = b.LL.x, bf.LL.y = b.LL.y, bf.UR.x = b.UR.x, bf.UR.y = b.UR.y)
00071 #define BF2B(bf, b) (b.LL.x = ROUND (bf.LL.x), b.LL.y = ROUND (bf.LL.y), b.UR.x = ROUND (bf.UR.x), b.UR.y = ROUND (bf.UR.y))
00072
00073 #endif
00074
00075 #ifdef __cplusplus
00076 }
00077 #endif
00078
00079 #endif