Esempio n. 1
0
    bool only_translation(agg::trans_affine& mat, double epsilon)
    {
        double temp[6];
        mat.store_to(temp);
		return (f_eq(temp[0], 1.0) && f_eq(temp[1], 0.0) &&
				f_eq(temp[2], 0.0) && f_eq(temp[3], 1.0));
    }
Esempio n. 2
0
 void get_translation(agg::trans_affine& m, double* tx, double* ty)
 {
     double temp[6];
     m.store_to(temp);
     *tx = temp[4];
     *ty = temp[5];
 }
Esempio n. 3
0
 void get_scale(agg::trans_affine& m, double* dx, double* dy)
 {
     {
         double temp[6];
         m.store_to(temp);
         *dx = temp[0];
         *dy = temp[3];
     }
 }
Esempio n. 4
0
    bool is_identity(agg::trans_affine& mat, double epsilon)
    {
        double temp[6];
        mat.store_to(temp);
		return (f_eq(temp[0], 1.0) && f_eq(temp[1], 0.0) &&
				f_eq(temp[2], 0.0) && f_eq(temp[3], 1.0) &&
				f_eq(temp[4], 0.0) && f_eq(temp[5], 0.0));
//        return (temp[0] == 1.0 && temp[1] == 0.0 &&
//                temp[2] == 0.0 && temp[3] == 1.0 &&
//                temp[4] == 0.0 && temp[5] == 0.0);

    }
Esempio n. 5
0
void cairo_context::add_image(agg::trans_affine const& tr, image_rgba8 const& data, double opacity)
{
    cairo_pattern pattern(data);
    if (!tr.is_identity())
    {
        double m[6];
        tr.store_to(m);
        cairo_matrix_t cairo_matrix;
        cairo_matrix_init(&cairo_matrix,m[0],m[1],m[2],m[3],m[4],m[5]);
        cairo_matrix_invert(&cairo_matrix);
        pattern.set_matrix(cairo_matrix);
    }
    cairo_save(cairo_.get());
    cairo_set_source(cairo_.get(), const_cast<cairo_pattern_t*>(pattern.pattern()));
    cairo_paint_with_alpha(cairo_.get(), opacity);
    cairo_restore(cairo_.get());
    check_object_status_and_throw_exception(*this);
}