iforce2d Chris / Mbed 2 deprecated ubxDistanceMeter

Displays distance to start location on OLED screen.

Dependencies:   mbed

u8g_circle.c@0:972874f31c98, 2018-03-07 (annotated)

Committer:
iforce2d
Date:
Wed Mar 07 12:49:14 2018 +0000
Revision:
0:972874f31c98
First commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
iforce2d 0:972874f31c98 1 /*
iforce2d 0:972874f31c98 2
iforce2d 0:972874f31c98 3 u8g_circle.c
iforce2d 0:972874f31c98 4
iforce2d 0:972874f31c98 5 Utility to draw empty and filled circles.
iforce2d 0:972874f31c98 6
iforce2d 0:972874f31c98 7 Universal 8bit Graphics Library
iforce2d 0:972874f31c98 8
iforce2d 0:972874f31c98 9 Copyright (c) 2011, bjthom@gmail.com
iforce2d 0:972874f31c98 10 u8g_DrawCircle & u8g_DrawDisc by olikraus@gmail.com
iforce2d 0:972874f31c98 11
iforce2d 0:972874f31c98 12 All rights reserved.
iforce2d 0:972874f31c98 13
iforce2d 0:972874f31c98 14 Redistribution and use in source and binary forms, with or without modification,
iforce2d 0:972874f31c98 15 are permitted provided that the following conditions are met:
iforce2d 0:972874f31c98 16
iforce2d 0:972874f31c98 17 * Redistributions of source code must retain the above copyright notice, this list
iforce2d 0:972874f31c98 18 of conditions and the following disclaimer.
iforce2d 0:972874f31c98 19
iforce2d 0:972874f31c98 20 * Redistributions in binary form must reproduce the above copyright notice, this
iforce2d 0:972874f31c98 21 list of conditions and the following disclaimer in the documentation and/or other
iforce2d 0:972874f31c98 22 materials provided with the distribution.
iforce2d 0:972874f31c98 23
iforce2d 0:972874f31c98 24 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
iforce2d 0:972874f31c98 25 CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
iforce2d 0:972874f31c98 26 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
iforce2d 0:972874f31c98 27 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
iforce2d 0:972874f31c98 28 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
iforce2d 0:972874f31c98 29 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
iforce2d 0:972874f31c98 30 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
iforce2d 0:972874f31c98 31 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
iforce2d 0:972874f31c98 32 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
iforce2d 0:972874f31c98 33 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
iforce2d 0:972874f31c98 34 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
iforce2d 0:972874f31c98 35 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
iforce2d 0:972874f31c98 36 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
iforce2d 0:972874f31c98 37
iforce2d 0:972874f31c98 38 Addition to the U8G Library 02/25/12
iforce2d 0:972874f31c98 39
iforce2d 0:972874f31c98 40
iforce2d 0:972874f31c98 41 */
iforce2d 0:972874f31c98 42
iforce2d 0:972874f31c98 43 #include "u8g.h"
iforce2d 0:972874f31c98 44
iforce2d 0:972874f31c98 45 #ifdef OLD_CODE
iforce2d 0:972874f31c98 46
iforce2d 0:972874f31c98 47 void circ_upperRight(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t x0, u8g_uint_t y0) {
iforce2d 0:972874f31c98 48 u8g_DrawPixel(u8g, x0 + x, y0 - y);
iforce2d 0:972874f31c98 49 u8g_DrawPixel(u8g, x0 + y, y0 - x);
iforce2d 0:972874f31c98 50 }
iforce2d 0:972874f31c98 51
iforce2d 0:972874f31c98 52 void circ_upperLeft(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t x0, u8g_uint_t y0) {
iforce2d 0:972874f31c98 53 u8g_DrawPixel(u8g, x0 - x, y0 - y);
iforce2d 0:972874f31c98 54 u8g_DrawPixel(u8g, x0 - y, y0 - x);
iforce2d 0:972874f31c98 55 }
iforce2d 0:972874f31c98 56
iforce2d 0:972874f31c98 57 void circ_lowerRight(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t x0, u8g_uint_t y0) {
iforce2d 0:972874f31c98 58 u8g_DrawPixel(u8g, x0 + x, y0 + y);
iforce2d 0:972874f31c98 59 u8g_DrawPixel(u8g, x0 + y, y0 + x);
iforce2d 0:972874f31c98 60 }
iforce2d 0:972874f31c98 61
iforce2d 0:972874f31c98 62 void circ_lowerLeft(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t x0, u8g_uint_t y0) {
iforce2d 0:972874f31c98 63 u8g_DrawPixel(u8g, x0 - x, y0 + y);
iforce2d 0:972874f31c98 64 u8g_DrawPixel(u8g, x0 - y, y0 + x);
iforce2d 0:972874f31c98 65 }
iforce2d 0:972874f31c98 66
iforce2d 0:972874f31c98 67 void circ_all(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t x0, u8g_uint_t y0) {
iforce2d 0:972874f31c98 68 circ_upperRight(u8g, x, y, x0, y0);
iforce2d 0:972874f31c98 69 circ_upperLeft(u8g, x, y, x0, y0);
iforce2d 0:972874f31c98 70 circ_lowerRight(u8g, x, y, x0, y0);
iforce2d 0:972874f31c98 71 circ_lowerLeft(u8g, x, y, x0, y0);
iforce2d 0:972874f31c98 72 }
iforce2d 0:972874f31c98 73
iforce2d 0:972874f31c98 74 void u8g_DrawEmpCirc(u8g_t *u8g, u8g_uint_t x0, u8g_uint_t y0, u8g_uint_t rad, uint8_t option)
iforce2d 0:972874f31c98 75 {
iforce2d 0:972874f31c98 76 if ( u8g_IsBBXIntersection(u8g, x0-rad-1, y0-rad-1, 2*rad+1, 2*rad+1) == 0)
iforce2d 0:972874f31c98 77 return;
iforce2d 0:972874f31c98 78
iforce2d 0:972874f31c98 79 int f = 1 - rad;
iforce2d 0:972874f31c98 80 int ddF_x = 1;
iforce2d 0:972874f31c98 81 int ddF_y = -2*rad;
iforce2d 0:972874f31c98 82 uint8_t x = 0;
iforce2d 0:972874f31c98 83 uint8_t y = rad;
iforce2d 0:972874f31c98 84
iforce2d 0:972874f31c98 85 void ( *circ_util )(u8g_t *, u8g_uint_t, u8g_uint_t, u8g_uint_t, u8g_uint_t);
iforce2d 0:972874f31c98 86
iforce2d 0:972874f31c98 87 switch (option)
iforce2d 0:972874f31c98 88 {
iforce2d 0:972874f31c98 89 case U8G_CIRC_UPPER_RIGHT:
iforce2d 0:972874f31c98 90 u8g_DrawPixel(u8g, x0, y0 - rad);
iforce2d 0:972874f31c98 91 u8g_DrawPixel(u8g, x0 + rad, y0);
iforce2d 0:972874f31c98 92 circ_util = circ_upperRight;
iforce2d 0:972874f31c98 93 break;
iforce2d 0:972874f31c98 94 case U8G_CIRC_UPPER_LEFT:
iforce2d 0:972874f31c98 95 u8g_DrawPixel(u8g, x0, y0 - rad);
iforce2d 0:972874f31c98 96 u8g_DrawPixel(u8g, x0 - rad, y0);
iforce2d 0:972874f31c98 97 circ_util = circ_upperLeft;
iforce2d 0:972874f31c98 98 break;
iforce2d 0:972874f31c98 99 case U8G_CIRC_LOWER_RIGHT:
iforce2d 0:972874f31c98 100 u8g_DrawPixel(u8g, x0, y0 + rad);
iforce2d 0:972874f31c98 101 u8g_DrawPixel(u8g, x0 + rad, y0);
iforce2d 0:972874f31c98 102 circ_util = circ_lowerRight;
iforce2d 0:972874f31c98 103 break;
iforce2d 0:972874f31c98 104 case U8G_CIRC_LOWER_LEFT:
iforce2d 0:972874f31c98 105 u8g_DrawPixel(u8g, x0, y0 + rad);
iforce2d 0:972874f31c98 106 u8g_DrawPixel(u8g, x0 - rad, y0);
iforce2d 0:972874f31c98 107 circ_util = circ_lowerLeft;
iforce2d 0:972874f31c98 108 break;
iforce2d 0:972874f31c98 109 default:
iforce2d 0:972874f31c98 110 case U8G_CIRC_ALL:
iforce2d 0:972874f31c98 111 u8g_DrawPixel(u8g, x0, y0 + rad);
iforce2d 0:972874f31c98 112 u8g_DrawPixel(u8g, x0, y0 - rad);
iforce2d 0:972874f31c98 113 u8g_DrawPixel(u8g, x0 + rad, y0);
iforce2d 0:972874f31c98 114 u8g_DrawPixel(u8g, x0 - rad, y0);
iforce2d 0:972874f31c98 115 circ_util = circ_all;
iforce2d 0:972874f31c98 116 break;
iforce2d 0:972874f31c98 117 }
iforce2d 0:972874f31c98 118
iforce2d 0:972874f31c98 119 while( x < y )
iforce2d 0:972874f31c98 120 {
iforce2d 0:972874f31c98 121 if(f >= 0)
iforce2d 0:972874f31c98 122 {
iforce2d 0:972874f31c98 123 y--;
iforce2d 0:972874f31c98 124 ddF_y += 2;
iforce2d 0:972874f31c98 125 f += ddF_y;
iforce2d 0:972874f31c98 126 }
iforce2d 0:972874f31c98 127 x++;
iforce2d 0:972874f31c98 128 ddF_x += 2;
iforce2d 0:972874f31c98 129 f += ddF_x;
iforce2d 0:972874f31c98 130
iforce2d 0:972874f31c98 131 circ_util(u8g, x, y, x0, y0);
iforce2d 0:972874f31c98 132 }
iforce2d 0:972874f31c98 133 }
iforce2d 0:972874f31c98 134
iforce2d 0:972874f31c98 135
iforce2d 0:972874f31c98 136 void u8g_DrawFillCirc(u8g_t *u8g, u8g_uint_t x0, u8g_uint_t y0, u8g_uint_t rad, uint8_t option)
iforce2d 0:972874f31c98 137 {
iforce2d 0:972874f31c98 138 if ( u8g_IsBBXIntersection(u8g, x0-rad-1, y0-rad-1, 2*rad+1, 2*rad+1) == 0)
iforce2d 0:972874f31c98 139 return;
iforce2d 0:972874f31c98 140
iforce2d 0:972874f31c98 141 int f = 1 - rad;
iforce2d 0:972874f31c98 142 int ddF_x = 1;
iforce2d 0:972874f31c98 143 int ddF_y = -2*rad;
iforce2d 0:972874f31c98 144 uint8_t x = 0;
iforce2d 0:972874f31c98 145 uint8_t y = rad;
iforce2d 0:972874f31c98 146
iforce2d 0:972874f31c98 147 // Draw vertical diameter at the horiz. center
iforce2d 0:972874f31c98 148 // u8g_DrawVLine(u8g, x0, y0 - rad, 2*rad+1);
iforce2d 0:972874f31c98 149
iforce2d 0:972874f31c98 150 if (option == U8G_CIRC_UPPER_LEFT || option == U8G_CIRC_UPPER_RIGHT) {
iforce2d 0:972874f31c98 151 u8g_DrawVLine(u8g, x0, y0 - rad, rad+1);
iforce2d 0:972874f31c98 152 }
iforce2d 0:972874f31c98 153 else if (option == U8G_CIRC_LOWER_LEFT || option == U8G_CIRC_LOWER_RIGHT) {
iforce2d 0:972874f31c98 154 u8g_DrawVLine(u8g, x0, y0, rad+1);
iforce2d 0:972874f31c98 155 }
iforce2d 0:972874f31c98 156 else {
iforce2d 0:972874f31c98 157 u8g_DrawVLine(u8g, x0, y0 - rad, 2*rad+1);
iforce2d 0:972874f31c98 158 }
iforce2d 0:972874f31c98 159
iforce2d 0:972874f31c98 160 while( x < y )
iforce2d 0:972874f31c98 161 {
iforce2d 0:972874f31c98 162 if(f >= 0)
iforce2d 0:972874f31c98 163 {
iforce2d 0:972874f31c98 164 y--;
iforce2d 0:972874f31c98 165 ddF_y += 2;
iforce2d 0:972874f31c98 166 f += ddF_y;
iforce2d 0:972874f31c98 167 }
iforce2d 0:972874f31c98 168 x++;
iforce2d 0:972874f31c98 169 ddF_x += 2;
iforce2d 0:972874f31c98 170 f += ddF_x;
iforce2d 0:972874f31c98 171
iforce2d 0:972874f31c98 172 //Draw vertical lines from one point to another
iforce2d 0:972874f31c98 173
iforce2d 0:972874f31c98 174 switch (option)
iforce2d 0:972874f31c98 175 {
iforce2d 0:972874f31c98 176 case U8G_CIRC_UPPER_RIGHT:
iforce2d 0:972874f31c98 177 u8g_DrawVLine(u8g, x0+x, y0-y, y+1);
iforce2d 0:972874f31c98 178 u8g_DrawVLine(u8g, x0+y, y0-x, x+1);
iforce2d 0:972874f31c98 179 break;
iforce2d 0:972874f31c98 180 case U8G_CIRC_UPPER_LEFT:
iforce2d 0:972874f31c98 181 u8g_DrawVLine(u8g, x0-x, y0-y, y+1);
iforce2d 0:972874f31c98 182 u8g_DrawVLine(u8g, x0-y, y0-x, x+1);
iforce2d 0:972874f31c98 183 break;
iforce2d 0:972874f31c98 184 case U8G_CIRC_LOWER_RIGHT:
iforce2d 0:972874f31c98 185 u8g_DrawVLine(u8g, x0+x, y0, y+1);
iforce2d 0:972874f31c98 186 u8g_DrawVLine(u8g, x0+y, y0, x+1);
iforce2d 0:972874f31c98 187 break;
iforce2d 0:972874f31c98 188 case U8G_CIRC_LOWER_LEFT:
iforce2d 0:972874f31c98 189 u8g_DrawVLine(u8g, x0-x, y0, y+1);
iforce2d 0:972874f31c98 190 u8g_DrawVLine(u8g, x0-y, y0, x+1);
iforce2d 0:972874f31c98 191 break;
iforce2d 0:972874f31c98 192 case U8G_CIRC_ALL:
iforce2d 0:972874f31c98 193 u8g_DrawVLine(u8g, x0+x, y0-y, 2*y+1);
iforce2d 0:972874f31c98 194 u8g_DrawVLine(u8g, x0-x, y0-y, 2*y+1);
iforce2d 0:972874f31c98 195 u8g_DrawVLine(u8g, x0+y, y0-x, 2*x+1);
iforce2d 0:972874f31c98 196 u8g_DrawVLine(u8g, x0-y, y0-x, 2*x+1);
iforce2d 0:972874f31c98 197 break;
iforce2d 0:972874f31c98 198 }
iforce2d 0:972874f31c98 199 }
iforce2d 0:972874f31c98 200 }
iforce2d 0:972874f31c98 201
iforce2d 0:972874f31c98 202 #endif
iforce2d 0:972874f31c98 203
iforce2d 0:972874f31c98 204 /*=========================================================================*/
iforce2d 0:972874f31c98 205
iforce2d 0:972874f31c98 206 static void u8g_draw_circle_section(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t x0, u8g_uint_t y0, uint8_t option) U8G_NOINLINE;
iforce2d 0:972874f31c98 207
iforce2d 0:972874f31c98 208 static void u8g_draw_circle_section(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t x0, u8g_uint_t y0, uint8_t option)
iforce2d 0:972874f31c98 209 {
iforce2d 0:972874f31c98 210 /* upper right */
iforce2d 0:972874f31c98 211 if ( option & U8G_DRAW_UPPER_RIGHT )
iforce2d 0:972874f31c98 212 {
iforce2d 0:972874f31c98 213 u8g_DrawPixel(u8g, x0 + x, y0 - y);
iforce2d 0:972874f31c98 214 u8g_DrawPixel(u8g, x0 + y, y0 - x);
iforce2d 0:972874f31c98 215 }
iforce2d 0:972874f31c98 216
iforce2d 0:972874f31c98 217 /* upper left */
iforce2d 0:972874f31c98 218 if ( option & U8G_DRAW_UPPER_LEFT )
iforce2d 0:972874f31c98 219 {
iforce2d 0:972874f31c98 220 u8g_DrawPixel(u8g, x0 - x, y0 - y);
iforce2d 0:972874f31c98 221 u8g_DrawPixel(u8g, x0 - y, y0 - x);
iforce2d 0:972874f31c98 222 }
iforce2d 0:972874f31c98 223
iforce2d 0:972874f31c98 224 /* lower right */
iforce2d 0:972874f31c98 225 if ( option & U8G_DRAW_LOWER_RIGHT )
iforce2d 0:972874f31c98 226 {
iforce2d 0:972874f31c98 227 u8g_DrawPixel(u8g, x0 + x, y0 + y);
iforce2d 0:972874f31c98 228 u8g_DrawPixel(u8g, x0 + y, y0 + x);
iforce2d 0:972874f31c98 229 }
iforce2d 0:972874f31c98 230
iforce2d 0:972874f31c98 231 /* lower left */
iforce2d 0:972874f31c98 232 if ( option & U8G_DRAW_LOWER_LEFT )
iforce2d 0:972874f31c98 233 {
iforce2d 0:972874f31c98 234 u8g_DrawPixel(u8g, x0 - x, y0 + y);
iforce2d 0:972874f31c98 235 u8g_DrawPixel(u8g, x0 - y, y0 + x);
iforce2d 0:972874f31c98 236 }
iforce2d 0:972874f31c98 237 }
iforce2d 0:972874f31c98 238
iforce2d 0:972874f31c98 239 void u8g_draw_circle(u8g_t *u8g, u8g_uint_t x0, u8g_uint_t y0, u8g_uint_t rad, uint8_t option)
iforce2d 0:972874f31c98 240 {
iforce2d 0:972874f31c98 241 u8g_int_t f;
iforce2d 0:972874f31c98 242 u8g_int_t ddF_x;
iforce2d 0:972874f31c98 243 u8g_int_t ddF_y;
iforce2d 0:972874f31c98 244 u8g_uint_t x;
iforce2d 0:972874f31c98 245 u8g_uint_t y;
iforce2d 0:972874f31c98 246
iforce2d 0:972874f31c98 247 f = 1;
iforce2d 0:972874f31c98 248 f -= rad;
iforce2d 0:972874f31c98 249 ddF_x = 1;
iforce2d 0:972874f31c98 250 ddF_y = 0;
iforce2d 0:972874f31c98 251 ddF_y -= rad;
iforce2d 0:972874f31c98 252 ddF_y *= 2;
iforce2d 0:972874f31c98 253 x = 0;
iforce2d 0:972874f31c98 254 y = rad;
iforce2d 0:972874f31c98 255
iforce2d 0:972874f31c98 256 u8g_draw_circle_section(u8g, x, y, x0, y0, option);
iforce2d 0:972874f31c98 257
iforce2d 0:972874f31c98 258 while ( x < y )
iforce2d 0:972874f31c98 259 {
iforce2d 0:972874f31c98 260 if (f >= 0)
iforce2d 0:972874f31c98 261 {
iforce2d 0:972874f31c98 262 y--;
iforce2d 0:972874f31c98 263 ddF_y += 2;
iforce2d 0:972874f31c98 264 f += ddF_y;
iforce2d 0:972874f31c98 265 }
iforce2d 0:972874f31c98 266 x++;
iforce2d 0:972874f31c98 267 ddF_x += 2;
iforce2d 0:972874f31c98 268 f += ddF_x;
iforce2d 0:972874f31c98 269
iforce2d 0:972874f31c98 270 u8g_draw_circle_section(u8g, x, y, x0, y0, option);
iforce2d 0:972874f31c98 271 }
iforce2d 0:972874f31c98 272 }
iforce2d 0:972874f31c98 273
iforce2d 0:972874f31c98 274 void u8g_DrawCircle(u8g_t *u8g, u8g_uint_t x0, u8g_uint_t y0, u8g_uint_t rad, uint8_t option)
iforce2d 0:972874f31c98 275 {
iforce2d 0:972874f31c98 276 /* check for bounding box */
iforce2d 0:972874f31c98 277 {
iforce2d 0:972874f31c98 278 u8g_uint_t radp, radp2;
iforce2d 0:972874f31c98 279
iforce2d 0:972874f31c98 280 radp = rad;
iforce2d 0:972874f31c98 281 radp++;
iforce2d 0:972874f31c98 282 radp2 = radp;
iforce2d 0:972874f31c98 283 radp2 *= 2;
iforce2d 0:972874f31c98 284
iforce2d 0:972874f31c98 285 if ( u8g_IsBBXIntersection(u8g, x0-radp, y0-radp, radp2, radp2) == 0)
iforce2d 0:972874f31c98 286 return;
iforce2d 0:972874f31c98 287 }
iforce2d 0:972874f31c98 288
iforce2d 0:972874f31c98 289 /* draw circle */
iforce2d 0:972874f31c98 290 u8g_draw_circle(u8g, x0, y0, rad, option);
iforce2d 0:972874f31c98 291 }
iforce2d 0:972874f31c98 292
iforce2d 0:972874f31c98 293 static void u8g_draw_disc_section(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t x0, u8g_uint_t y0, uint8_t option) U8G_NOINLINE;
iforce2d 0:972874f31c98 294
iforce2d 0:972874f31c98 295 static void u8g_draw_disc_section(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t x0, u8g_uint_t y0, uint8_t option)
iforce2d 0:972874f31c98 296 {
iforce2d 0:972874f31c98 297 /* upper right */
iforce2d 0:972874f31c98 298 if ( option & U8G_DRAW_UPPER_RIGHT )
iforce2d 0:972874f31c98 299 {
iforce2d 0:972874f31c98 300 u8g_DrawVLine(u8g, x0+x, y0-y, y+1);
iforce2d 0:972874f31c98 301 u8g_DrawVLine(u8g, x0+y, y0-x, x+1);
iforce2d 0:972874f31c98 302 }
iforce2d 0:972874f31c98 303
iforce2d 0:972874f31c98 304 /* upper left */
iforce2d 0:972874f31c98 305 if ( option & U8G_DRAW_UPPER_LEFT )
iforce2d 0:972874f31c98 306 {
iforce2d 0:972874f31c98 307 u8g_DrawVLine(u8g, x0-x, y0-y, y+1);
iforce2d 0:972874f31c98 308 u8g_DrawVLine(u8g, x0-y, y0-x, x+1);
iforce2d 0:972874f31c98 309 }
iforce2d 0:972874f31c98 310
iforce2d 0:972874f31c98 311 /* lower right */
iforce2d 0:972874f31c98 312 if ( option & U8G_DRAW_LOWER_RIGHT )
iforce2d 0:972874f31c98 313 {
iforce2d 0:972874f31c98 314 u8g_DrawVLine(u8g, x0+x, y0, y+1);
iforce2d 0:972874f31c98 315 u8g_DrawVLine(u8g, x0+y, y0, x+1);
iforce2d 0:972874f31c98 316 }
iforce2d 0:972874f31c98 317
iforce2d 0:972874f31c98 318 /* lower left */
iforce2d 0:972874f31c98 319 if ( option & U8G_DRAW_LOWER_LEFT )
iforce2d 0:972874f31c98 320 {
iforce2d 0:972874f31c98 321 u8g_DrawVLine(u8g, x0-x, y0, y+1);
iforce2d 0:972874f31c98 322 u8g_DrawVLine(u8g, x0-y, y0, x+1);
iforce2d 0:972874f31c98 323 }
iforce2d 0:972874f31c98 324 }
iforce2d 0:972874f31c98 325
iforce2d 0:972874f31c98 326 void u8g_draw_disc(u8g_t *u8g, u8g_uint_t x0, u8g_uint_t y0, u8g_uint_t rad, uint8_t option)
iforce2d 0:972874f31c98 327 {
iforce2d 0:972874f31c98 328 u8g_int_t f;
iforce2d 0:972874f31c98 329 u8g_int_t ddF_x;
iforce2d 0:972874f31c98 330 u8g_int_t ddF_y;
iforce2d 0:972874f31c98 331 u8g_uint_t x;
iforce2d 0:972874f31c98 332 u8g_uint_t y;
iforce2d 0:972874f31c98 333
iforce2d 0:972874f31c98 334 f = 1;
iforce2d 0:972874f31c98 335 f -= rad;
iforce2d 0:972874f31c98 336 ddF_x = 1;
iforce2d 0:972874f31c98 337 ddF_y = 0;
iforce2d 0:972874f31c98 338 ddF_y -= rad;
iforce2d 0:972874f31c98 339 ddF_y *= 2;
iforce2d 0:972874f31c98 340 x = 0;
iforce2d 0:972874f31c98 341 y = rad;
iforce2d 0:972874f31c98 342
iforce2d 0:972874f31c98 343 u8g_draw_disc_section(u8g, x, y, x0, y0, option);
iforce2d 0:972874f31c98 344
iforce2d 0:972874f31c98 345 while ( x < y )
iforce2d 0:972874f31c98 346 {
iforce2d 0:972874f31c98 347 if (f >= 0)
iforce2d 0:972874f31c98 348 {
iforce2d 0:972874f31c98 349 y--;
iforce2d 0:972874f31c98 350 ddF_y += 2;
iforce2d 0:972874f31c98 351 f += ddF_y;
iforce2d 0:972874f31c98 352 }
iforce2d 0:972874f31c98 353 x++;
iforce2d 0:972874f31c98 354 ddF_x += 2;
iforce2d 0:972874f31c98 355 f += ddF_x;
iforce2d 0:972874f31c98 356
iforce2d 0:972874f31c98 357 u8g_draw_disc_section(u8g, x, y, x0, y0, option);
iforce2d 0:972874f31c98 358 }
iforce2d 0:972874f31c98 359 }
iforce2d 0:972874f31c98 360
iforce2d 0:972874f31c98 361 void u8g_DrawDisc(u8g_t *u8g, u8g_uint_t x0, u8g_uint_t y0, u8g_uint_t rad, uint8_t option)
iforce2d 0:972874f31c98 362 {
iforce2d 0:972874f31c98 363 /* check for bounding box */
iforce2d 0:972874f31c98 364 {
iforce2d 0:972874f31c98 365 u8g_uint_t radp, radp2;
iforce2d 0:972874f31c98 366
iforce2d 0:972874f31c98 367 radp = rad;
iforce2d 0:972874f31c98 368 radp++;
iforce2d 0:972874f31c98 369 radp2 = radp;
iforce2d 0:972874f31c98 370 radp2 *= 2;
iforce2d 0:972874f31c98 371
iforce2d 0:972874f31c98 372 if ( u8g_IsBBXIntersection(u8g, x0-radp, y0-radp, radp2, radp2) == 0)
iforce2d 0:972874f31c98 373 return;
iforce2d 0:972874f31c98 374 }
iforce2d 0:972874f31c98 375
iforce2d 0:972874f31c98 376 /* draw disc */
iforce2d 0:972874f31c98 377 u8g_draw_disc(u8g, x0, y0, rad, option);
iforce2d 0:972874f31c98 378 }
iforce2d 0:972874f31c98 379
iforce2d 0:972874f31c98 380
iforce2d 0:972874f31c98 381
iforce2d 0:972874f31c98 382
iforce2d 0:972874f31c98 383