X-Git-Url: http://git.asbjorn.biz/?p=swftools.git;a=blobdiff_plain;f=lib%2Fgfxtools.c;h=3e565a107ab05062d2d27faae1e6e495a43ec28a;hp=e79e6fefd672f78c7a7c71a3213fd8d6f1a2df2e;hb=71b11cc925e384ecad5b0f48b511bcadc2867f9b;hpb=a75ba56a3af5826224448fd26867eeac7c4bb395

diff --git a/lib/gfxtools.c b/lib/gfxtools.c
index e79e6fe..3e565a1 100644
--- a/lib/gfxtools.c
+++ b/lib/gfxtools.c
@@ -834,6 +834,42 @@ gfxline_t*gfxline_makerectangle(int x1,int y1,int x2, int y2)
     return line;
 }
 
+gfxline_t*gfxline_makecircle(double x,double y,double rx, double ry)
+{
+    double C1 = 0.2930;    
+    double C2 = 0.4140;   
+    double begin = 0.7070; 
+    gfxline_t** line = (gfxline_t**)rfx_calloc(sizeof(gfxline_t*)*9);
+    int t;
+    for(t=0;t<9;t++) {
+	line[t] = rfx_calloc(sizeof(gfxline_t));
+    }
+    line[0]->type = gfx_moveTo;
+    line[0]->x = x+begin*rx;
+    line[0]->y = y+begin*ry;
+    for(t=1;t<9;t++) {
+	line[t-1]->next = line[t];
+	line[t]->type = gfx_splineTo;
+    }
+    line[8]->next = 0;
+#define R(nr,cx,cy,mx,my) \
+    line[nr]->sx = line[nr-1]->x + (cx); \
+    line[nr]->sy = line[nr-1]->y + (cy); \
+    line[nr]->x = line[nr]->sx + (mx); \
+    line[nr]->y = line[nr]->sy + (my);
+    R(1, -C1*rx,  C1*ry, -C2*rx,      0);
+    R(2, -C2*rx,      0, -C1*rx, -C1*ry);
+    R(3, -C1*rx, -C1*ry,      0, -C2*ry);
+    R(4,      0, -C2*ry,  C1*rx, -C1*ry);
+    R(5,  C1*rx, -C1*ry,  C2*rx,      0);
+    R(6,  C2*rx,      0,  C1*rx,  C1*ry);
+    R(7,  C1*rx,  C1*ry,      0,  C2*ry);
+    R(8,      0,  C2*ry, -C1*rx,  C1*ry);
+    gfxline_t*l = line[0];
+    free(line);
+    return l;
+}
+
 gfxbbox_t* gfxline_isrectangle(gfxline_t*_l)
 {
     if(!_l)