mirror of
https://github.com/DarkFlippers/unleashed-firmware
synced 2024-12-12 06:02:28 +00:00
389ff92cc1
* Makefile, Scripts: new linter * About: remove ID from IC * Firmware: remove double define for DIVC/DIVR * Scripts: check folder names too. Docker: replace syntax check with make lint. * Reformat Sources and Migrate to new file naming convention * Docker: symlink clang-format-12 to clang-format * Add coding style guide
102 lines
2.7 KiB
C
102 lines
2.7 KiB
C
/*
|
|
|
|
u8g2_box.c
|
|
|
|
Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
|
|
|
|
Copyright (c) 2016, olikraus@gmail.com
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without modification,
|
|
are permitted provided that the following conditions are met:
|
|
|
|
* Redistributions of source code must retain the above copyright notice, this list
|
|
of conditions and the following disclaimer.
|
|
|
|
* Redistributions in binary form must reproduce the above copyright notice, this
|
|
list of conditions and the following disclaimer in the documentation and/or other
|
|
materials provided with the distribution.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
|
CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
|
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
|
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
|
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
*/
|
|
|
|
#include "u8g2.h"
|
|
|
|
void u8g2_DrawLine(u8g2_t* u8g2, u8g2_uint_t x1, u8g2_uint_t y1, u8g2_uint_t x2, u8g2_uint_t y2) {
|
|
u8g2_uint_t tmp;
|
|
u8g2_uint_t x, y;
|
|
u8g2_uint_t dx, dy;
|
|
u8g2_int_t err;
|
|
u8g2_int_t ystep;
|
|
|
|
uint8_t swapxy = 0;
|
|
|
|
/* no intersection check at the moment, should be added... */
|
|
|
|
if(x1 > x2)
|
|
dx = x1 - x2;
|
|
else
|
|
dx = x2 - x1;
|
|
if(y1 > y2)
|
|
dy = y1 - y2;
|
|
else
|
|
dy = y2 - y1;
|
|
|
|
if(dy > dx) {
|
|
swapxy = 1;
|
|
tmp = dx;
|
|
dx = dy;
|
|
dy = tmp;
|
|
tmp = x1;
|
|
x1 = y1;
|
|
y1 = tmp;
|
|
tmp = x2;
|
|
x2 = y2;
|
|
y2 = tmp;
|
|
}
|
|
if(x1 > x2) {
|
|
tmp = x1;
|
|
x1 = x2;
|
|
x2 = tmp;
|
|
tmp = y1;
|
|
y1 = y2;
|
|
y2 = tmp;
|
|
}
|
|
err = dx >> 1;
|
|
if(y2 > y1)
|
|
ystep = 1;
|
|
else
|
|
ystep = -1;
|
|
y = y1;
|
|
|
|
#ifndef U8G2_16BIT
|
|
if(x2 == 255) x2--;
|
|
#else
|
|
if(x2 == 0xffff) x2--;
|
|
#endif
|
|
|
|
for(x = x1; x <= x2; x++) {
|
|
if(swapxy == 0)
|
|
u8g2_DrawPixel(u8g2, x, y);
|
|
else
|
|
u8g2_DrawPixel(u8g2, y, x);
|
|
err -= (uint8_t)dy;
|
|
if(err < 0) {
|
|
y += (u8g2_uint_t)ystep;
|
|
err += (u8g2_uint_t)dx;
|
|
}
|
|
}
|
|
}
|