--- /dev/null
+
+////////////////////////////////////////////////////////////////////
+// START_IP_HEADER //
+// //
+// Written by Francois Fleuret //
+// Contact <francois.fleuret@idiap.ch> for comments & bug reports //
+// //
+// END_IP_HEADER //
+////////////////////////////////////////////////////////////////////
+
+#include "vision_problem_10.h"
+#include "shape.h"
+
+VisionProblem_10::VisionProblem_10() { }
+
+void VisionProblem_10::generate(int label, Vignette *vignette) {
+ int nb_shapes = 4;
+ int xs[nb_shapes], ys[nb_shapes];
+
+ int error;
+ do {
+ do {
+ if(label == 1) {
+ scalar_t alpha = drand48() * 2 * M_PI;
+ scalar_t radius = drand48() * Vignette::width / 2;
+ scalar_t xc = drand48() * Vignette::width;
+ scalar_t yc = drand48() * Vignette::height;
+ for(int n = 0; n < nb_shapes; n++) {
+ xs[n] = int(xc + part_size/2 +
+ radius * sin(alpha + n * 2 * M_PI / scalar_t(nb_shapes)));
+ ys[n] = int(yc + part_size/2 +
+ radius * cos(alpha + n * 2 * M_PI / scalar_t(nb_shapes)));
+ }
+ } else {
+ for(int n = 0; n < nb_shapes; n++) {
+ xs[n] = int(drand48() * Vignette::width);
+ ys[n] = int(drand48() * Vignette::height);
+ }
+ }
+ } while(cluttered_shapes(part_size, nb_shapes, xs, ys));
+
+ vignette->clear();
+
+ Shape shape;
+ error = 0;
+ for(int n = 0; n < nb_shapes; n++) {
+ if(n == 0) {
+ shape.randomize(part_size / 2, part_hole_size / 2);
+ }
+ error |= shape.overwrites(vignette, xs[n], ys[n]);
+ shape.draw(vignette, xs[n], ys[n]);
+ }
+ } while(error);
+}