1

Committer:
hisi
Date:
Fri Jun 17 02:24:45 2022 +0000
Revision:
17:c0c589ffe9bf
Parent:
14:edb3c36aa1a7
11

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nkhorman 0:c3dcd4c4983a 1 /***********************************
hisi 17:c0c589ffe9bf 2 This is a our graphics core library, for all our displays.
nkhorman 0:c3dcd4c4983a 3 We'll be adapting all the
hisi 17:c0c589ffe9bf 4 existing libaries to use this core to make updating, support
nkhorman 0:c3dcd4c4983a 5 and upgrading easier!
nkhorman 0:c3dcd4c4983a 6
hisi 17:c0c589ffe9bf 7 Adafruit invests time and resources providing this open source code,
hisi 17:c0c589ffe9bf 8 please support Adafruit and open-source hardware by purchasing
nkhorman 0:c3dcd4c4983a 9 products from Adafruit!
nkhorman 0:c3dcd4c4983a 10
hisi 17:c0c589ffe9bf 11 Written by Limor Fried/Ladyada for Adafruit Industries.
nkhorman 0:c3dcd4c4983a 12 BSD license, check license.txt for more information
nkhorman 0:c3dcd4c4983a 13 All text above must be included in any redistribution
nkhorman 0:c3dcd4c4983a 14 ****************************************/
nkhorman 0:c3dcd4c4983a 15
nkhorman 0:c3dcd4c4983a 16 /*
nkhorman 9:ddb97c9850a2 17 * Modified by Neal Horman 7/14/2012 for use in mbed
nkhorman 0:c3dcd4c4983a 18 */
nkhorman 0:c3dcd4c4983a 19
nkhorman 0:c3dcd4c4983a 20 #include "mbed.h"
nkhorman 0:c3dcd4c4983a 21
nkhorman 0:c3dcd4c4983a 22 #include "Adafruit_GFX.h"
nkhorman 0:c3dcd4c4983a 23 #include "glcdfont.h"
nkhorman 0:c3dcd4c4983a 24
nkhorman 9:ddb97c9850a2 25 #if defined(GFX_WANT_ABSTRACTS)
nkhorman 0:c3dcd4c4983a 26 // draw a circle outline
nkhorman 0:c3dcd4c4983a 27 void Adafruit_GFX::drawCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color)
nkhorman 0:c3dcd4c4983a 28 {
nkhorman 0:c3dcd4c4983a 29 int16_t f = 1 - r;
nkhorman 0:c3dcd4c4983a 30 int16_t ddF_x = 1;
nkhorman 0:c3dcd4c4983a 31 int16_t ddF_y = -2 * r;
nkhorman 0:c3dcd4c4983a 32 int16_t x = 0;
nkhorman 0:c3dcd4c4983a 33 int16_t y = r;
hisi 17:c0c589ffe9bf 34
nkhorman 0:c3dcd4c4983a 35 drawPixel(x0, y0+r, color);
nkhorman 0:c3dcd4c4983a 36 drawPixel(x0, y0-r, color);
nkhorman 0:c3dcd4c4983a 37 drawPixel(x0+r, y0, color);
nkhorman 0:c3dcd4c4983a 38 drawPixel(x0-r, y0, color);
hisi 17:c0c589ffe9bf 39
hisi 17:c0c589ffe9bf 40 while (x<y) {
hisi 17:c0c589ffe9bf 41 if (f >= 0) {
nkhorman 0:c3dcd4c4983a 42 y--;
nkhorman 0:c3dcd4c4983a 43 ddF_y += 2;
nkhorman 0:c3dcd4c4983a 44 f += ddF_y;
nkhorman 0:c3dcd4c4983a 45 }
nkhorman 0:c3dcd4c4983a 46 x++;
nkhorman 0:c3dcd4c4983a 47 ddF_x += 2;
nkhorman 0:c3dcd4c4983a 48 f += ddF_x;
hisi 17:c0c589ffe9bf 49
nkhorman 0:c3dcd4c4983a 50 drawPixel(x0 + x, y0 + y, color);
nkhorman 0:c3dcd4c4983a 51 drawPixel(x0 - x, y0 + y, color);
nkhorman 0:c3dcd4c4983a 52 drawPixel(x0 + x, y0 - y, color);
nkhorman 0:c3dcd4c4983a 53 drawPixel(x0 - x, y0 - y, color);
nkhorman 0:c3dcd4c4983a 54 drawPixel(x0 + y, y0 + x, color);
nkhorman 0:c3dcd4c4983a 55 drawPixel(x0 - y, y0 + x, color);
nkhorman 0:c3dcd4c4983a 56 drawPixel(x0 + y, y0 - x, color);
nkhorman 0:c3dcd4c4983a 57 drawPixel(x0 - y, y0 - x, color);
nkhorman 0:c3dcd4c4983a 58 }
nkhorman 0:c3dcd4c4983a 59 }
nkhorman 0:c3dcd4c4983a 60
nkhorman 0:c3dcd4c4983a 61 void Adafruit_GFX::drawCircleHelper( int16_t x0, int16_t y0, int16_t r, uint8_t cornername, uint16_t color)
nkhorman 0:c3dcd4c4983a 62 {
nkhorman 0:c3dcd4c4983a 63 int16_t f = 1 - r;
nkhorman 0:c3dcd4c4983a 64 int16_t ddF_x = 1;
nkhorman 0:c3dcd4c4983a 65 int16_t ddF_y = -2 * r;
nkhorman 0:c3dcd4c4983a 66 int16_t x = 0;
nkhorman 0:c3dcd4c4983a 67 int16_t y = r;
hisi 17:c0c589ffe9bf 68
hisi 17:c0c589ffe9bf 69 while (x<y) {
hisi 17:c0c589ffe9bf 70 if (f >= 0) {
nkhorman 0:c3dcd4c4983a 71 y--;
nkhorman 0:c3dcd4c4983a 72 ddF_y += 2;
nkhorman 0:c3dcd4c4983a 73 f += ddF_y;
nkhorman 0:c3dcd4c4983a 74 }
nkhorman 0:c3dcd4c4983a 75 x++;
nkhorman 0:c3dcd4c4983a 76 ddF_x += 2;
nkhorman 0:c3dcd4c4983a 77 f += ddF_x;
hisi 17:c0c589ffe9bf 78
hisi 17:c0c589ffe9bf 79 if (cornername & 0x4) {
nkhorman 0:c3dcd4c4983a 80 drawPixel(x0 + x, y0 + y, color);
nkhorman 0:c3dcd4c4983a 81 drawPixel(x0 + y, y0 + x, color);
hisi 17:c0c589ffe9bf 82 }
nkhorman 0:c3dcd4c4983a 83
hisi 17:c0c589ffe9bf 84 if (cornername & 0x2) {
nkhorman 0:c3dcd4c4983a 85 drawPixel(x0 + x, y0 - y, color);
nkhorman 0:c3dcd4c4983a 86 drawPixel(x0 + y, y0 - x, color);
nkhorman 0:c3dcd4c4983a 87 }
nkhorman 0:c3dcd4c4983a 88
hisi 17:c0c589ffe9bf 89 if (cornername & 0x8) {
nkhorman 0:c3dcd4c4983a 90 drawPixel(x0 - y, y0 + x, color);
nkhorman 0:c3dcd4c4983a 91 drawPixel(x0 - x, y0 + y, color);
nkhorman 0:c3dcd4c4983a 92 }
hisi 17:c0c589ffe9bf 93
hisi 17:c0c589ffe9bf 94 if (cornername & 0x1) {
nkhorman 0:c3dcd4c4983a 95 drawPixel(x0 - y, y0 - x, color);
nkhorman 0:c3dcd4c4983a 96 drawPixel(x0 - x, y0 - y, color);
nkhorman 0:c3dcd4c4983a 97 }
nkhorman 0:c3dcd4c4983a 98 }
nkhorman 0:c3dcd4c4983a 99 }
nkhorman 0:c3dcd4c4983a 100
nkhorman 0:c3dcd4c4983a 101 void Adafruit_GFX::fillCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color)
nkhorman 0:c3dcd4c4983a 102 {
nkhorman 0:c3dcd4c4983a 103 drawFastVLine(x0, y0-r, 2*r+1, color);
nkhorman 0:c3dcd4c4983a 104 fillCircleHelper(x0, y0, r, 3, 0, color);
nkhorman 0:c3dcd4c4983a 105 }
nkhorman 0:c3dcd4c4983a 106
nkhorman 0:c3dcd4c4983a 107 // used to do circles and roundrects!
nkhorman 0:c3dcd4c4983a 108 void Adafruit_GFX::fillCircleHelper(int16_t x0, int16_t y0, int16_t r, uint8_t cornername, int16_t delta, uint16_t color)
nkhorman 0:c3dcd4c4983a 109 {
nkhorman 0:c3dcd4c4983a 110 int16_t f = 1 - r;
nkhorman 0:c3dcd4c4983a 111 int16_t ddF_x = 1;
nkhorman 0:c3dcd4c4983a 112 int16_t ddF_y = -2 * r;
nkhorman 0:c3dcd4c4983a 113 int16_t x = 0;
nkhorman 0:c3dcd4c4983a 114 int16_t y = r;
hisi 17:c0c589ffe9bf 115
hisi 17:c0c589ffe9bf 116 while (x<y) {
hisi 17:c0c589ffe9bf 117 if (f >= 0) {
nkhorman 0:c3dcd4c4983a 118 y--;
nkhorman 0:c3dcd4c4983a 119 ddF_y += 2;
nkhorman 0:c3dcd4c4983a 120 f += ddF_y;
nkhorman 0:c3dcd4c4983a 121 }
nkhorman 0:c3dcd4c4983a 122 x++;
nkhorman 0:c3dcd4c4983a 123 ddF_x += 2;
nkhorman 0:c3dcd4c4983a 124 f += ddF_x;
hisi 17:c0c589ffe9bf 125
hisi 17:c0c589ffe9bf 126 if (cornername & 0x1) {
nkhorman 0:c3dcd4c4983a 127 drawFastVLine(x0+x, y0-y, 2*y+1+delta, color);
nkhorman 0:c3dcd4c4983a 128 drawFastVLine(x0+y, y0-x, 2*x+1+delta, color);
nkhorman 0:c3dcd4c4983a 129 }
nkhorman 0:c3dcd4c4983a 130
hisi 17:c0c589ffe9bf 131 if (cornername & 0x2) {
nkhorman 0:c3dcd4c4983a 132 drawFastVLine(x0-x, y0-y, 2*y+1+delta, color);
nkhorman 0:c3dcd4c4983a 133 drawFastVLine(x0-y, y0-x, 2*x+1+delta, color);
nkhorman 0:c3dcd4c4983a 134 }
nkhorman 0:c3dcd4c4983a 135 }
nkhorman 0:c3dcd4c4983a 136 }
nkhorman 9:ddb97c9850a2 137 #endif
nkhorman 0:c3dcd4c4983a 138
nkhorman 9:ddb97c9850a2 139 #if defined(GFX_WANT_ABSTRACTS) || defined(GFX_SIZEABLE_TEXT)
nkhorman 0:c3dcd4c4983a 140 // bresenham's algorithm - thx wikpedia
nkhorman 0:c3dcd4c4983a 141 void Adafruit_GFX::drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t color)
nkhorman 0:c3dcd4c4983a 142 {
nkhorman 0:c3dcd4c4983a 143 int16_t steep = abs(y1 - y0) > abs(x1 - x0);
hisi 17:c0c589ffe9bf 144
hisi 17:c0c589ffe9bf 145 if (steep) {
nkhorman 0:c3dcd4c4983a 146 swap(x0, y0);
nkhorman 0:c3dcd4c4983a 147 swap(x1, y1);
nkhorman 0:c3dcd4c4983a 148 }
hisi 17:c0c589ffe9bf 149
hisi 17:c0c589ffe9bf 150 if (x0 > x1) {
nkhorman 0:c3dcd4c4983a 151 swap(x0, x1);
nkhorman 0:c3dcd4c4983a 152 swap(y0, y1);
nkhorman 0:c3dcd4c4983a 153 }
hisi 17:c0c589ffe9bf 154
nkhorman 0:c3dcd4c4983a 155 int16_t dx, dy;
nkhorman 0:c3dcd4c4983a 156 dx = x1 - x0;
nkhorman 0:c3dcd4c4983a 157 dy = abs(y1 - y0);
hisi 17:c0c589ffe9bf 158
nkhorman 0:c3dcd4c4983a 159 int16_t err = dx / 2;
nkhorman 0:c3dcd4c4983a 160 int16_t ystep;
hisi 17:c0c589ffe9bf 161
nkhorman 0:c3dcd4c4983a 162 if (y0 < y1)
nkhorman 0:c3dcd4c4983a 163 ystep = 1;
nkhorman 0:c3dcd4c4983a 164 else
nkhorman 0:c3dcd4c4983a 165 ystep = -1;
hisi 17:c0c589ffe9bf 166
hisi 17:c0c589ffe9bf 167 for (; x0<=x1; x0++) {
nkhorman 0:c3dcd4c4983a 168 if (steep)
nkhorman 0:c3dcd4c4983a 169 drawPixel(y0, x0, color);
nkhorman 0:c3dcd4c4983a 170 else
nkhorman 0:c3dcd4c4983a 171 drawPixel(x0, y0, color);
nkhorman 0:c3dcd4c4983a 172
nkhorman 0:c3dcd4c4983a 173 err -= dy;
hisi 17:c0c589ffe9bf 174 if (err < 0) {
nkhorman 0:c3dcd4c4983a 175 y0 += ystep;
nkhorman 0:c3dcd4c4983a 176 err += dx;
nkhorman 0:c3dcd4c4983a 177 }
nkhorman 0:c3dcd4c4983a 178 }
nkhorman 0:c3dcd4c4983a 179 }
nkhorman 0:c3dcd4c4983a 180
nkhorman 9:ddb97c9850a2 181 void Adafruit_GFX::drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color)
nkhorman 9:ddb97c9850a2 182 {
nkhorman 9:ddb97c9850a2 183 // stupidest version - update in subclasses if desired!
nkhorman 9:ddb97c9850a2 184 drawLine(x, y, x, y+h-1, color);
nkhorman 9:ddb97c9850a2 185 }
nkhorman 0:c3dcd4c4983a 186
nkhorman 9:ddb97c9850a2 187 void Adafruit_GFX::fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color)
nkhorman 9:ddb97c9850a2 188 {
nkhorman 9:ddb97c9850a2 189 // stupidest version - update in subclasses if desired!
nkhorman 9:ddb97c9850a2 190 for (int16_t i=x; i<x+w; i++)
hisi 17:c0c589ffe9bf 191 drawFastVLine(i, y, h, color);
nkhorman 9:ddb97c9850a2 192 }
nkhorman 9:ddb97c9850a2 193 #endif
nkhorman 9:ddb97c9850a2 194
nkhorman 9:ddb97c9850a2 195 #if defined(GFX_WANT_ABSTRACTS)
nkhorman 0:c3dcd4c4983a 196 // draw a rectangle
nkhorman 0:c3dcd4c4983a 197 void Adafruit_GFX::drawRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color)
nkhorman 0:c3dcd4c4983a 198 {
nkhorman 0:c3dcd4c4983a 199 drawFastHLine(x, y, w, color);
nkhorman 0:c3dcd4c4983a 200 drawFastHLine(x, y+h-1, w, color);
nkhorman 0:c3dcd4c4983a 201 drawFastVLine(x, y, h, color);
nkhorman 0:c3dcd4c4983a 202 drawFastVLine(x+w-1, y, h, color);
nkhorman 0:c3dcd4c4983a 203 }
nkhorman 0:c3dcd4c4983a 204
nkhorman 0:c3dcd4c4983a 205 void Adafruit_GFX::drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color)
nkhorman 0:c3dcd4c4983a 206 {
nkhorman 0:c3dcd4c4983a 207 // stupidest version - update in subclasses if desired!
nkhorman 0:c3dcd4c4983a 208 drawLine(x, y, x+w-1, y, color);
nkhorman 0:c3dcd4c4983a 209 }
nkhorman 0:c3dcd4c4983a 210
nkhorman 0:c3dcd4c4983a 211 void Adafruit_GFX::fillScreen(uint16_t color)
nkhorman 0:c3dcd4c4983a 212 {
nkhorman 0:c3dcd4c4983a 213 fillRect(0, 0, _width, _height, color);
nkhorman 0:c3dcd4c4983a 214 }
nkhorman 0:c3dcd4c4983a 215
nkhorman 0:c3dcd4c4983a 216 // draw a rounded rectangle!
nkhorman 0:c3dcd4c4983a 217 void Adafruit_GFX::drawRoundRect(int16_t x, int16_t y, int16_t w, int16_t h, int16_t r, uint16_t color)
nkhorman 0:c3dcd4c4983a 218 {
nkhorman 0:c3dcd4c4983a 219 // smarter version
hisi 17:c0c589ffe9bf 220 drawFastHLine(x+r, y, w-2*r, color); // Top
hisi 17:c0c589ffe9bf 221 drawFastHLine(x+r, y+h-1, w-2*r, color); // Bottom
hisi 17:c0c589ffe9bf 222 drawFastVLine( x, y+r, h-2*r, color); // Left
hisi 17:c0c589ffe9bf 223 drawFastVLine( x+w-1, y+r, h-2*r, color); // Right
nkhorman 0:c3dcd4c4983a 224 // draw four corners
hisi 17:c0c589ffe9bf 225 drawCircleHelper(x+r, y+r, r, 1, color);
hisi 17:c0c589ffe9bf 226 drawCircleHelper(x+w-r-1, y+r, r, 2, color);
nkhorman 0:c3dcd4c4983a 227 drawCircleHelper(x+w-r-1, y+h-r-1, r, 4, color);
hisi 17:c0c589ffe9bf 228 drawCircleHelper(x+r, y+h-r-1, r, 8, color);
nkhorman 0:c3dcd4c4983a 229 }
nkhorman 0:c3dcd4c4983a 230
nkhorman 0:c3dcd4c4983a 231 // fill a rounded rectangle!
nkhorman 0:c3dcd4c4983a 232 void Adafruit_GFX::fillRoundRect(int16_t x, int16_t y, int16_t w, int16_t h, int16_t r, uint16_t color)
nkhorman 0:c3dcd4c4983a 233 {
nkhorman 0:c3dcd4c4983a 234 // smarter version
nkhorman 0:c3dcd4c4983a 235 fillRect(x+r, y, w-2*r, h, color);
hisi 17:c0c589ffe9bf 236
nkhorman 0:c3dcd4c4983a 237 // draw four corners
nkhorman 0:c3dcd4c4983a 238 fillCircleHelper(x+w-r-1, y+r, r, 1, h-2*r-1, color);
hisi 17:c0c589ffe9bf 239 fillCircleHelper(x+r, y+r, r, 2, h-2*r-1, color);
nkhorman 0:c3dcd4c4983a 240 }
nkhorman 0:c3dcd4c4983a 241
nkhorman 0:c3dcd4c4983a 242 // draw a triangle!
nkhorman 0:c3dcd4c4983a 243 void Adafruit_GFX::drawTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color)
nkhorman 0:c3dcd4c4983a 244 {
nkhorman 0:c3dcd4c4983a 245 drawLine(x0, y0, x1, y1, color);
nkhorman 0:c3dcd4c4983a 246 drawLine(x1, y1, x2, y2, color);
nkhorman 0:c3dcd4c4983a 247 drawLine(x2, y2, x0, y0, color);
nkhorman 0:c3dcd4c4983a 248 }
nkhorman 0:c3dcd4c4983a 249
nkhorman 0:c3dcd4c4983a 250 // fill a triangle!
nkhorman 0:c3dcd4c4983a 251 void Adafruit_GFX::fillTriangle ( int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color)
nkhorman 0:c3dcd4c4983a 252 {
nkhorman 0:c3dcd4c4983a 253 int16_t a, b, y, last;
hisi 17:c0c589ffe9bf 254
nkhorman 0:c3dcd4c4983a 255 // Sort coordinates by Y order (y2 >= y1 >= y0)
nkhorman 0:c3dcd4c4983a 256 if (y0 > y1)
hisi 17:c0c589ffe9bf 257 swap(y0, y1);
hisi 17:c0c589ffe9bf 258 swap(x0, x1);
nkhorman 0:c3dcd4c4983a 259
nkhorman 0:c3dcd4c4983a 260 if (y1 > y2)
hisi 17:c0c589ffe9bf 261 swap(y2, y1);
hisi 17:c0c589ffe9bf 262 swap(x2, x1);
nkhorman 0:c3dcd4c4983a 263
nkhorman 0:c3dcd4c4983a 264 if (y0 > y1)
hisi 17:c0c589ffe9bf 265 swap(y0, y1);
hisi 17:c0c589ffe9bf 266 swap(x0, x1);
nkhorman 0:c3dcd4c4983a 267
hisi 17:c0c589ffe9bf 268
hisi 17:c0c589ffe9bf 269 if(y0 == y2) {
hisi 17:c0c589ffe9bf 270 // Handle awkward all-on-same-line case as its own thing
nkhorman 0:c3dcd4c4983a 271 a = b = x0;
nkhorman 0:c3dcd4c4983a 272 if(x1 < a)
nkhorman 0:c3dcd4c4983a 273 a = x1;
nkhorman 0:c3dcd4c4983a 274 else if(x1 > b)
nkhorman 0:c3dcd4c4983a 275 b = x1;
hisi 17:c0c589ffe9bf 276
nkhorman 0:c3dcd4c4983a 277 if(x2 < a)
nkhorman 0:c3dcd4c4983a 278 a = x2;
nkhorman 0:c3dcd4c4983a 279 else if(x2 > b) b = x2;
hisi 17:c0c589ffe9bf 280 drawFastHLine(a, y0, b-a+1, color);
nkhorman 0:c3dcd4c4983a 281 return;
nkhorman 0:c3dcd4c4983a 282 }
nkhorman 0:c3dcd4c4983a 283
nkhorman 0:c3dcd4c4983a 284 int16_t
hisi 17:c0c589ffe9bf 285 dx01 = x1 - x0,
hisi 17:c0c589ffe9bf 286 dy01 = y1 - y0,
hisi 17:c0c589ffe9bf 287 dx02 = x2 - x0,
hisi 17:c0c589ffe9bf 288 dy02 = y2 - y0,
hisi 17:c0c589ffe9bf 289 dx12 = x2 - x1,
hisi 17:c0c589ffe9bf 290 dy12 = y2 - y1,
hisi 17:c0c589ffe9bf 291 sa = 0,
hisi 17:c0c589ffe9bf 292 sb = 0;
nkhorman 0:c3dcd4c4983a 293
nkhorman 0:c3dcd4c4983a 294 // For upper part of triangle, find scanline crossings for segments
nkhorman 0:c3dcd4c4983a 295 // 0-1 and 0-2. If y1=y2 (flat-bottomed triangle), the scanline y1
nkhorman 0:c3dcd4c4983a 296 // is included here (and second loop will be skipped, avoiding a /0
nkhorman 0:c3dcd4c4983a 297 // error there), otherwise scanline y1 is skipped here and handled
nkhorman 0:c3dcd4c4983a 298 // in the second loop...which also avoids a /0 error here if y0=y1
nkhorman 0:c3dcd4c4983a 299 // (flat-topped triangle).
nkhorman 0:c3dcd4c4983a 300 if(y1 == y2)
nkhorman 0:c3dcd4c4983a 301 last = y1; // Include y1 scanline
nkhorman 0:c3dcd4c4983a 302 else
nkhorman 0:c3dcd4c4983a 303 last = y1-1; // Skip it
nkhorman 0:c3dcd4c4983a 304
hisi 17:c0c589ffe9bf 305 for(y=y0; y<=last; y++) {
nkhorman 0:c3dcd4c4983a 306 a = x0 + sa / dy01;
nkhorman 0:c3dcd4c4983a 307 b = x0 + sb / dy02;
nkhorman 0:c3dcd4c4983a 308 sa += dx01;
nkhorman 0:c3dcd4c4983a 309 sb += dx02;
nkhorman 0:c3dcd4c4983a 310 /* longhand:
nkhorman 0:c3dcd4c4983a 311 a = x0 + (x1 - x0) * (y - y0) / (y1 - y0);
nkhorman 0:c3dcd4c4983a 312 b = x0 + (x2 - x0) * (y - y0) / (y2 - y0);
nkhorman 0:c3dcd4c4983a 313 */
nkhorman 0:c3dcd4c4983a 314 if(a > b)
nkhorman 0:c3dcd4c4983a 315 swap(a,b);
nkhorman 0:c3dcd4c4983a 316 drawFastHLine(a, y, b-a+1, color);
nkhorman 0:c3dcd4c4983a 317 }
nkhorman 0:c3dcd4c4983a 318
nkhorman 0:c3dcd4c4983a 319 // For lower part of triangle, find scanline crossings for segments
nkhorman 0:c3dcd4c4983a 320 // 0-2 and 1-2. This loop is skipped if y1=y2.
nkhorman 0:c3dcd4c4983a 321 sa = dx12 * (y - y1);
nkhorman 0:c3dcd4c4983a 322 sb = dx02 * (y - y0);
hisi 17:c0c589ffe9bf 323 for(; y<=y2; y++) {
nkhorman 0:c3dcd4c4983a 324 a = x1 + sa / dy12;
nkhorman 0:c3dcd4c4983a 325 b = x0 + sb / dy02;
nkhorman 0:c3dcd4c4983a 326 sa += dx12;
nkhorman 0:c3dcd4c4983a 327 sb += dx02;
nkhorman 0:c3dcd4c4983a 328 /* longhand:
nkhorman 0:c3dcd4c4983a 329 a = x1 + (x2 - x1) * (y - y1) / (y2 - y1);
nkhorman 0:c3dcd4c4983a 330 b = x0 + (x2 - x0) * (y - y0) / (y2 - y0);
nkhorman 0:c3dcd4c4983a 331 */
nkhorman 0:c3dcd4c4983a 332 if(a > b)
nkhorman 0:c3dcd4c4983a 333 swap(a,b);
nkhorman 0:c3dcd4c4983a 334 drawFastHLine(a, y, b-a+1, color);
nkhorman 0:c3dcd4c4983a 335 }
nkhorman 0:c3dcd4c4983a 336 }
nkhorman 0:c3dcd4c4983a 337
nkhorman 0:c3dcd4c4983a 338 void Adafruit_GFX::drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color)
nkhorman 0:c3dcd4c4983a 339 {
hisi 17:c0c589ffe9bf 340 for (int16_t j=0; j<h; j++) {
hisi 17:c0c589ffe9bf 341 for (int16_t i=0; i<w; i++ ) {
nkhorman 0:c3dcd4c4983a 342 if (bitmap[i + (j/8)*w] & _BV(j%8))
nkhorman 0:c3dcd4c4983a 343 drawPixel(x+i, y+j, color);
nkhorman 0:c3dcd4c4983a 344 }
nkhorman 0:c3dcd4c4983a 345 }
nkhorman 0:c3dcd4c4983a 346 }
nkhorman 14:edb3c36aa1a7 347 #endif
nkhorman 0:c3dcd4c4983a 348
nkhorman 0:c3dcd4c4983a 349 size_t Adafruit_GFX::writeChar(uint8_t c)
nkhorman 0:c3dcd4c4983a 350 {
hisi 17:c0c589ffe9bf 351 if (c == '\n') {
nkhorman 0:c3dcd4c4983a 352 cursor_y += textsize*8;
nkhorman 0:c3dcd4c4983a 353 cursor_x = 0;
hisi 17:c0c589ffe9bf 354 } else if (c == '\r')
nkhorman 0:c3dcd4c4983a 355 cursor_x = 0;
hisi 17:c0c589ffe9bf 356 else {
nkhorman 0:c3dcd4c4983a 357 drawChar(cursor_x, cursor_y, c, textcolor, textbgcolor, textsize);
nkhorman 0:c3dcd4c4983a 358 cursor_x += textsize*6;
hisi 17:c0c589ffe9bf 359 if (wrap && (cursor_x > (_width - textsize*6))) {
nkhorman 0:c3dcd4c4983a 360 cursor_y += textsize*8;
nkhorman 0:c3dcd4c4983a 361 cursor_x = 0;
nkhorman 0:c3dcd4c4983a 362 }
nkhorman 0:c3dcd4c4983a 363 }
nkhorman 0:c3dcd4c4983a 364 return 1;
nkhorman 0:c3dcd4c4983a 365 }
nkhorman 0:c3dcd4c4983a 366
nkhorman 0:c3dcd4c4983a 367 // draw a character
nkhorman 0:c3dcd4c4983a 368 void Adafruit_GFX::drawChar(int16_t x, int16_t y, unsigned char c, uint16_t color, uint16_t bg, uint8_t size)
nkhorman 0:c3dcd4c4983a 369 {
nkhorman 0:c3dcd4c4983a 370 if(
nkhorman 0:c3dcd4c4983a 371 (x >= _width) || // Clip right
nkhorman 0:c3dcd4c4983a 372 (y >= _height) || // Clip bottom
nkhorman 0:c3dcd4c4983a 373 ((x + 5 * size - 1) < 0) || // Clip left
nkhorman 0:c3dcd4c4983a 374 ((y + 8 * size - 1) < 0) // Clip top
hisi 17:c0c589ffe9bf 375 )
hisi 17:c0c589ffe9bf 376 return;
hisi 17:c0c589ffe9bf 377
hisi 17:c0c589ffe9bf 378 for (int8_t i=0; i<6; i++ ) {
nkhorman 0:c3dcd4c4983a 379 uint8_t line = 0;
nkhorman 0:c3dcd4c4983a 380
hisi 17:c0c589ffe9bf 381 if (i == 5)
nkhorman 0:c3dcd4c4983a 382 line = 0x0;
hisi 17:c0c589ffe9bf 383 else
nkhorman 0:c3dcd4c4983a 384 line = font[(c*5)+i];
hisi 17:c0c589ffe9bf 385
hisi 17:c0c589ffe9bf 386 for (int8_t j = 0; j<8; j++) {
hisi 17:c0c589ffe9bf 387 if (line & 0x1) {
nkhorman 9:ddb97c9850a2 388 #if defined(GFX_WANT_ABSTRACTS) || defined(GFX_SIZEABLE_TEXT)
nkhorman 0:c3dcd4c4983a 389 if (size == 1) // default size
nkhorman 0:c3dcd4c4983a 390 drawPixel(x+i, y+j, color);
nkhorman 0:c3dcd4c4983a 391 else // big size
nkhorman 0:c3dcd4c4983a 392 fillRect(x+(i*size), y+(j*size), size, size, color);
nkhorman 9:ddb97c9850a2 393 #else
nkhorman 9:ddb97c9850a2 394 drawPixel(x+i, y+j, color);
nkhorman 0:c3dcd4c4983a 395 #endif
hisi 17:c0c589ffe9bf 396 } else if (bg != color) {
nkhorman 9:ddb97c9850a2 397 #if defined(GFX_WANT_ABSTRACTS) || defined(GFX_SIZEABLE_TEXT)
nkhorman 0:c3dcd4c4983a 398 if (size == 1) // default size
nkhorman 0:c3dcd4c4983a 399 drawPixel(x+i, y+j, bg);
nkhorman 0:c3dcd4c4983a 400 else // big size
nkhorman 0:c3dcd4c4983a 401 fillRect(x+i*size, y+j*size, size, size, bg);
nkhorman 9:ddb97c9850a2 402 #else
nkhorman 9:ddb97c9850a2 403 drawPixel(x+i, y+j, bg);
nkhorman 0:c3dcd4c4983a 404 #endif
nkhorman 0:c3dcd4c4983a 405 }
nkhorman 0:c3dcd4c4983a 406 line >>= 1;
nkhorman 0:c3dcd4c4983a 407 }
nkhorman 0:c3dcd4c4983a 408 }
nkhorman 0:c3dcd4c4983a 409 }
nkhorman 9:ddb97c9850a2 410
nkhorman 0:c3dcd4c4983a 411 void Adafruit_GFX::setRotation(uint8_t x)
nkhorman 0:c3dcd4c4983a 412 {
nkhorman 0:c3dcd4c4983a 413 x %= 4; // cant be higher than 3
nkhorman 0:c3dcd4c4983a 414 rotation = x;
hisi 17:c0c589ffe9bf 415 switch (x) {
nkhorman 0:c3dcd4c4983a 416 case 0:
nkhorman 0:c3dcd4c4983a 417 case 2:
nkhorman 0:c3dcd4c4983a 418 _width = _rawWidth;
nkhorman 0:c3dcd4c4983a 419 _height = _rawHeight;
nkhorman 0:c3dcd4c4983a 420 break;
nkhorman 0:c3dcd4c4983a 421 case 1:
nkhorman 0:c3dcd4c4983a 422 case 3:
nkhorman 0:c3dcd4c4983a 423 _width = _rawHeight;
nkhorman 0:c3dcd4c4983a 424 _height = _rawWidth;
nkhorman 0:c3dcd4c4983a 425 break;
nkhorman 0:c3dcd4c4983a 426 }
nkhorman 0:c3dcd4c4983a 427 }
hisi 17:c0c589ffe9bf 428
hisi 17:c0c589ffe9bf 429 void Adafruit_GFX::drawX11BitMap(const uint8_t bitmap[],uint16_t bitMapWidth,uint16_t bitMapSize,uint16_t posX,uint16_t posY)
hisi 17:c0c589ffe9bf 430 {
hisi 17:c0c589ffe9bf 431 int16_t x1 = posX;
hisi 17:c0c589ffe9bf 432 int16_t y1 = posY;
hisi 17:c0c589ffe9bf 433 for(unsigned int i=0; i<bitMapSize; i++) {
hisi 17:c0c589ffe9bf 434 uint8_t val = bitmap[i];
hisi 17:c0c589ffe9bf 435 for(int j=0; j<8; j++) {
hisi 17:c0c589ffe9bf 436 uint16_t pixColor;
hisi 17:c0c589ffe9bf 437 if(val>>j & 0x01)
hisi 17:c0c589ffe9bf 438 pixColor = 1;
hisi 17:c0c589ffe9bf 439 else
hisi 17:c0c589ffe9bf 440 pixColor = 0;
hisi 17:c0c589ffe9bf 441 drawPixel(x1,y1, pixColor);
hisi 17:c0c589ffe9bf 442 x1 = x1 + 1;
hisi 17:c0c589ffe9bf 443 if(x1 == posX + bitMapWidth) {
hisi 17:c0c589ffe9bf 444 x1 = posX;
hisi 17:c0c589ffe9bf 445 y1 = y1 + 1;
hisi 17:c0c589ffe9bf 446 }
hisi 17:c0c589ffe9bf 447 }
hisi 17:c0c589ffe9bf 448 }
hisi 17:c0c589ffe9bf 449 }