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Add Arduino additions for Arduino 1.5.x.

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Courtney Bane
2014-07-03 18:51:52 -05:00
parent ce517df702
commit 253cf0f427
328 changed files with 112905 additions and 0 deletions
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81
ArduinoAddons/Arduino_1.0.x/libraries/U8glib/utility/u8g_line.c Normal file
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/*
u8g_line.h
Universal 8bit Graphics Library
Copyright (c) 2012, 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 "u8g.h"
void u8g_DrawLine(u8g_t *u8g, u8g_uint_t x1, u8g_uint_t y1, u8g_uint_t x2, u8g_uint_t y2)
{
u8g_uint_t tmp;
u8g_uint_t x,y;
u8g_uint_t dx, dy;
u8g_int_t err;
u8g_int_t ystep;
uint8_t swapxy = 0;
/* no BBX 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;
for( x = x1; x <= x2; x++ )
{
if ( swapxy == 0 )
u8g_DrawPixel(u8g, x, y);
else
u8g_DrawPixel(u8g, y, x);
err -= (uint8_t)dy;
if ( err < 0 )
{
y += (u8g_uint_t)ystep;
err += (u8g_uint_t)dx;
}
}
}