Class: SimplerTiles::Bounds

Inherits:
Object
  • Object
show all
Includes:
PP
Defined in:
lib/simpler_tiles/bounds.rb,
ext/simpler_tiles/bounds.c

Overview

Each Bounds represents a rectangular box, for Map objects they define the boundary of the data to return from each Layer.

Instance Method Summary collapse

Methods included from PP

#inspect

Constructor Details

#initialize(maxx, maxy, minx, miny) ⇒ Bounds

Initialize a bounds from max and min coordinates



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# File 'lib/simpler_tiles/bounds.rb', line 8

def initialize(maxx, maxy, minx, miny)
  grow maxx, maxy
  grow minx, miny
end

Instance Method Details

#grow(x, y) ⇒ Bounds

Extend the bounds to include the point defined by x, y.

Parameters:

  • (Number, Number)

Returns:



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# File 'ext/simpler_tiles/bounds.c', line 36

static VALUE
grow(VALUE self, VALUE x, VALUE y){
  simplet_bounds_t *bounds = get_bounds(self);
  simplet_bounds_extend(bounds, NUM2DBL(x), NUM2DBL(y));
  return self;
}

#reproject(from, to) ⇒ Bounds

Reproject the bounds from from_proj to new projection to_proj. Returns a new bounds object.

Parameters:

  • (String, String)

Returns:



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# File 'ext/simpler_tiles/bounds.c', line 50

static VALUE
reproject(VALUE self, VALUE from, VALUE to) {
  Check_Type(from, T_STRING);
  Check_Type(to, T_STRING);
  simplet_bounds_t *bounds;
  if(!(bounds = simplet_bounds_reproject(get_bounds(self), RSTRING_PTR(from), RSTRING_PTR(to))))
    rb_raise(rb_eRuntimeError, "Error in creating bounds.");

  VALUE id = rb_intern("new");

  VALUE rbounds = rb_funcall(cSimplerTilesBounds, id, 4,
                              rb_float_new(bounds->nw.x),
                              rb_float_new(bounds->nw.y),
                              rb_float_new(bounds->se.x),
                              rb_float_new(bounds->se.y));

  simplet_bounds_free(bounds);
  return rbounds;
}

#to_wkt ⇒ String

Return a WKT representation of the bounds.

Returns:

  • (String) 


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# File 'ext/simpler_tiles/bounds.c', line 19

static VALUE
to_wkt(VALUE self){
  simplet_bounds_t *bounds = get_bounds(self);
  char *wkt = NULL;

  if(simplet_bounds_to_wkt(bounds, &wkt) != SIMPLET_OK)
    rb_raise(rb_eRuntimeError, "Error in creating wkt string.");

  return rb_str_new2(wkt);
}