diff --git a/src/sconvcol.h b/src/sconvcol.h
index 5451b6b..2bdcc52 100644
--- a/src/sconvcol.h
+++ b/src/sconvcol.h
@@ -121,6 +121,8 @@ int sch_hull_connect_face_edges(const sch_hull* hull, int face_index);
 
 void sch_create_face(int num_vert, simd4f* vertices, sch_face* out_face);
 
+void sch_create_unitbox(sch_hull* out_hull);
+
 //
 // sconvcol Implementation
 //
@@ -337,6 +339,26 @@ sch_edge* sch_hull_find_edge (const sch_hull* hull, const simd4f v0, const simd4
   return NULL;
 }
 
+void sch_hull_get_support(const sch_hull* hull, simd4f normal, simd4f* out_vert) {
+  sch_edge* edge = hull->faces[0].edge;
+  sch_edge* last_edge = edge;
+  float normal_dot_edge = -1.;
+
+  do {
+    simd4f dir = simd4f_normalize3(simd4f_sub (edge->next->vert->p, edge->vert->p));
+    normal_dot_edge = simd4f_dot3_scalar(dir, normal);
+
+    if (normal_dot_edge <= 0.) {
+      edge = edge->twin->next;
+    } else {
+      edge = edge->next;
+      last_edge = edge;
+    }
+  } while (last_edge != edge || normal_dot_edge > 0);
+
+  *out_vert = edge->vert->p;
+}
+
 int sch_hull_is_vertex_concave(const sch_hull* hull, const simd4f v) {
   sch_plane plane;
   for (int i = 0; i < hull->num_faces; i++) {
@@ -407,6 +429,62 @@ int sch_hull_is_closed (const sch_hull* hull) {
   return SchHullResultOK;
 }
 
+void sch_create_unitbox(sch_hull* out_hull) {
+  sch_hull_builder builder;
+  sch_builder_reset(&builder);
+
+  // +x
+  sch_builder_face_begin(&builder);
+  sch_builder_face_vertex(&builder, simd4f_create (0.5f, -0.5f, 0.5f, 1.f));
+  sch_builder_face_vertex(&builder, simd4f_create ( 0.5f, -0.5f, -0.5f, 1.f));
+  sch_builder_face_vertex(&builder, simd4f_create ( 0.5f, 0.5f,  -0.5f, 1.f));
+  sch_builder_face_vertex(&builder, simd4f_create (0.5f, 0.5f,  0.5f, 1.f));
+  sch_builder_face_end(&builder);
+
+  // -x
+  sch_builder_face_begin(&builder);
+  sch_builder_face_vertex(&builder, simd4f_create (-0.5f, -0.5f, -0.5f, 1.f));
+  sch_builder_face_vertex(&builder, simd4f_create ( -0.5f, -0.5f, 0.5f, 1.f));
+  sch_builder_face_vertex(&builder, simd4f_create ( -0.5f, 0.5f,  0.5f, 1.f));
+  sch_builder_face_vertex(&builder, simd4f_create (-0.5f, 0.5f,  -0.5f, 1.f));
+  sch_builder_face_end(&builder);
+
+  // +y
+  sch_builder_face_begin(&builder);
+  sch_builder_face_vertex(&builder, simd4f_create (0.5f, 0.5f, 0.5f, 1.f));
+  sch_builder_face_vertex(&builder, simd4f_create ( 0.5f, 0.5f, -0.5f, 1.f));
+  sch_builder_face_vertex(&builder, simd4f_create ( -0.5f, 0.5f,  -0.5f, 1.f));
+  sch_builder_face_vertex(&builder, simd4f_create (-0.5f, 0.5f,  0.5f, 1.f));
+  sch_builder_face_end(&builder);
+
+  // +y
+  sch_builder_face_begin(&builder);
+  sch_builder_face_vertex(&builder, simd4f_create (-0.5f, -0.5f, -0.5f, 1.f));
+  sch_builder_face_vertex(&builder, simd4f_create ( 0.5f, -0.5f, -0.5f, 1.f));
+  sch_builder_face_vertex(&builder, simd4f_create ( 0.5f, -0.5f,  0.5f, 1.f));
+  sch_builder_face_vertex(&builder, simd4f_create (-0.5f, -0.5f,  0.5f, 1.f));
+  sch_builder_face_end(&builder);
+
+  // +z
+  sch_builder_face_begin(&builder);
+  sch_builder_face_vertex(&builder, simd4f_create (-0.5f, -0.5f, 0.5f, 1.f));
+  sch_builder_face_vertex(&builder, simd4f_create ( 0.5f, -0.5f, 0.5f, 1.f));
+  sch_builder_face_vertex(&builder, simd4f_create ( 0.5f, 0.5f,  0.5f, 1.f));
+  sch_builder_face_vertex(&builder, simd4f_create (-0.5f, 0.5f,  0.5f, 1.f));
+  sch_builder_face_end(&builder);
+
+  // -z
+  sch_builder_face_begin(&builder);
+  sch_builder_face_vertex(&builder, simd4f_create(0.5f, -0.5f, -0.5f, 1.f));
+  sch_builder_face_vertex(&builder, simd4f_create(-0.5f, -0.5f, -0.5f, 1.f));
+  sch_builder_face_vertex(&builder, simd4f_create(-0.5f, 0.5f, -0.5f, 1.f));
+  sch_builder_face_vertex(&builder, simd4f_create(0.5f, 0.5f, -0.5f, 1.f));
+  sch_builder_face_end(&builder);
+
+  int hull_result = sch_builder_create_hull(&builder, out_hull);
+  assert (hull_result == SchHullResultOK);
+}
+
 #endif /* SCONVCOL_IMPLEMENTATION */
 
 #ifdef __cplusplus