void Delaunay::init(PointVec& points)
{
total_points_count = (int)points.size();
mesh.clear();
for(int i = 0; i < points.size(); i++)
{
mesh.add_vertex(points[i]);
}
// add properties
mesh.add_property(FaceToVertices);
mesh.add_property(VertexToFace);
mesh.add_property(VertexToHEdge);
// add infinite vertices
VHandle vhs[3];
vhs[0] = mesh.add_vertex(Point(-INF, -INF, 0));
vhs[1] = mesh.add_vertex(Point(INF, -INF, 0));
vhs[2] = mesh.add_vertex(Point(0, INF, 0));
// add the initial triangle
FHandle fh = mesh.add_face(vhs, 3);
// link vertex and face
for(auto& vhi : mesh.vertices())
{
mesh.property(FaceToVertices, fh).push_back(vhi);
mesh.property(VertexToFace, vhi) = fh;
}
}
bool DelPoint() {
if (vertex_.size() == Settings::MinPoints)
return false;
int idx = RangeRand(vertex_.size());
PointIt it = vertex_.begin();
std::advance(it, idx);
vertex_.erase(it);
return true;
}
bool AddPoint() {
if (vertex_.size() == Settings::MaxPoints)
return false;
int idx = RangeRand(vertex_.size());
PointIt it = vertex_.begin();
std::advance(it, idx);
vertex_.insert(it, DnaPoint(RangeRand(Settings::ScreenWidth),
RangeRand(Settings::ScreenHeight)));
return true;
}
void Delaunay::addVertices(PointVec& points)
{
//mesh.clear();
//for(auto& p : points)
// mesh.add_vertex(p);
mesh.clear();
for(int i = 0; i < points.size(); i++)
{
mesh.add_vertex(points[i]);
}
}
void Render(Image &dest) const {
int points = vertex_.size();
Sint16 x[points];
Sint16 y[points];
int i = 0;
for ( PointVec::const_iterator it = vertex_.begin();
it != vertex_.end(); ++it, ++i) {
x[i] = it->X();
y[i] = it->Y();
}
dest.Polygon(x, y, points, color_);
}
void RenderEngine::renderPath( Path& path , PointVec& points)
{
if ( !points.empty() )
RenderRT::draw< RenderRT::eXYZ >( GL_LINE_STRIP , &points[0] , points.size() , sizeof( Vec3f ) );
}