+gfxline_t* mkrandomshape(int range, int n)
+{
+ int i;
+ gfxline_t* line = malloc(sizeof(gfxline_t)*n);
+ for(i=0;i<n;i++) {
+ line[i].type = i?gfx_lineTo:gfx_moveTo;
+ line[i].x = lrand48()%range - range/2;
+ line[i].y = lrand48()%range - range/2;
+ line[i].next = &line[i+1];
+ }
+ line[n-1].x = line[0].x;
+ line[n-1].y = line[0].y;
+ line[n-1].next = 0;
+ return line;
+}
+
+gfxline_t* mkchessboard()
+{
+ gfxline_t*b = 0;
+ int x,y;
+ unsigned int r = 0;
+ int spacing = 20;
+
+ int num_caros = 40;
+ int l = 5;
+ char do_centerpiece=1;
+
+ //int num_caros = 4;
+ //int l=1;
+ //char do_centerpiece=0;
+
+ for(x=-l;x<=l;x++)
+ for(y=-l;y<=l;y++) {
+ /* pseudo random */
+ r = crc32_add_byte(r, x);r = crc32_add_byte(r, y);
+ if(r&1) {
+ gfxline_t*box;
+ if(r&2) {
+ box = gfxline_makerectangle(x*spacing,y*spacing,(x+1)*spacing,(y+1)*spacing);
+ } else {
+ box = gfxline_makerectangle((x+1)*spacing,y*spacing,x*spacing,(y+1)*spacing);
+ }
+ b = gfxline_append(b, box);
+ }
+ }
+
+ int t;
+ for(t=0;t<num_caros;t++) {
+ r = crc32_add_byte(r, t);
+ int x=(r%10-5)*spacing;
+ int y=((r>>4)%10-5)*spacing;
+ int sizex = ((r>>8)%4)*spacing;
+ int sizey = sizex;
+ if(r&65536)
+ sizex = -sizex;
+ gfxline_t*l = malloc(sizeof(gfxline_t)*5);
+ l[0].type = gfx_moveTo;l[0].next = &l[1];
+ l[1].type = gfx_lineTo;l[1].next = &l[2];
+ l[2].type = gfx_lineTo;l[2].next = &l[3];
+ l[3].type = gfx_lineTo;l[3].next = &l[4];
+ l[4].type = gfx_lineTo;l[4].next = 0;
+ l[0].x = x;
+ l[0].y = y-sizey;
+ l[1].x = x+sizex;
+ l[1].y = y;
+ l[2].x = x;
+ l[2].y = y+sizey;
+ l[3].x = x-sizex;
+ l[3].y = y;
+ l[4].x = x;
+ l[4].y = y-sizey;
+ gfxline_append(b, l);
+ }
+ if(do_centerpiece) {
+ for(t=0;t<5;t++) {
+ gfxline_t*l = gfxline_makerectangle(-9*spacing,-10,9*spacing,10);
+ gfxmatrix_t matrix;
+ memset(&matrix, 0, sizeof(gfxmatrix_t));
+ double ua=t*0.43;
+ matrix.m00=cos(ua);matrix.m10=sin(ua);
+ matrix.m01=-sin(ua);matrix.m11=cos(ua);
+ gfxline_transform(l, &matrix);
+ gfxline_append(b, l);
+ }
+ gfxline_append(b, gfxline_makecircle(100,100,100,100));
+ }
+ return b;
+}
+
+gfxline_t* make_circles()
+{
+ gfxline_t*b = 0;
+ unsigned int c = 0;
+ int t;
+ for(t=0;t<30;t++) {
+ c = crc32_add_byte(c, t);
+ int x = c%200;
+ c = crc32_add_byte(c, t);
+ int y = c%200;;
+ c = crc32_add_byte(c, t^0x55);
+ int r = c%100;
+ b = gfxline_append(b, gfxline_makecircle(x,y,r,r));
+ }
+ return b;
+}
+
+static windcontext_t onepolygon = {1};
+
+int test0()
+{
+ //gfxline_t* b = mkchessboard();
+ //gfxline_t* b = mkrandomshape(100,7);
+ gfxline_t* b = gfxline_makecircle(100,100,100,100);
+
+ gfxmatrix_t m;
+ memset(&m, 0, sizeof(gfxmatrix_t));
+ int t;
+ for(t=0;t<360;t++) {
+ m.m00 = cos(t*M_PI/180.0);
+ m.m01 = sin(t*M_PI/180.0);
+ m.m10 = -sin(t*M_PI/180.0);
+ m.m11 = cos(t*M_PI/180.0);
+ m.tx = 400*1.41/2;
+ m.ty = 400*1.41/2;
+ gfxline_transform(b, &m);
+ gfxpoly_t*poly = gfxpoly_from_gfxline(b, 0.05);
+
+ gfxpoly_t*poly2 = gfxpoly_process(poly, &windrule_evenodd, &onepolygon);
+ gfxpoly_destroy(poly2);
+ gfxpoly_destroy(poly);
+ }
+ gfxline_free(b);
+}
+
+int test1(int argn, char*argv[])