HackRF-Treasure-Chest/Software/portapack-mayhem/firmware/common/ui.cpp
2022-09-22 09:26:57 -07:00

100 lines
2.6 KiB
C++

/*
* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
*
* This file is part of PortaPack.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include "ui.hpp"
#include "sine_table.hpp"
#include <algorithm>
namespace ui {
// CGA palette
Color term_colors[16] = {
Color::black(),
Color::dark_blue(),
Color::dark_green(),
Color::dark_cyan(),
Color::dark_red(),
Color::dark_magenta(),
Color::dark_yellow(),
Color::light_grey(),
Color::dark_grey(),
Color::blue(),
Color::green(),
Color::cyan(),
Color::red(),
Color::magenta(),
Color::yellow(),
Color::white()
};
bool Rect::contains(const Point p) const {
return (p.x() >= left()) && (p.y() >= top()) &&
(p.x() < right()) && (p.y() < bottom());
}
Rect Rect::intersect(const Rect& o) const {
const auto x1 = std::max(left(), o.left());
const auto x2 = std::min(right(), o.right());
const auto y1 = std::max(top(), o.top());
const auto y2 = std::min(bottom(), o.bottom());
if( (x2 >= x1) && (y2 > y1) ) {
return { x1, y1, x2 - x1, y2 - y1 };
} else {
return { };
}
}
// TODO: This violates the principle of least surprise!
// This does a union, but that might not be obvious from "+=" syntax.
Rect& Rect::operator+=(const Rect& p) {
if( is_empty() ) {
*this = p;
}
if( !p.is_empty() ) {
const auto x1 = std::min(left(), p.left());
const auto y1 = std::min(top(), p.top());
_pos = { x1, y1 };
const auto x2 = std::max(right(), p.right());
const auto y2 = std::max(bottom(), p.bottom());
_size = { x2 - x1, y2 - y1 };
}
return *this;
}
Rect& Rect::operator+=(const Point& p) {
_pos += p;
return *this;
}
Rect& Rect::operator-=(const Point& p) {
_pos -= p;
return *this;
}
Point polar_to_point(float angle, uint32_t distance) {
//polar to compass with y negated for screen drawing
return Point(sin_f32(DEG_TO_RAD(-angle) + pi) * distance,
sin_f32(DEG_TO_RAD(-angle) - (pi / 2)) * distance);
}
} /* namespace ui */