modtronix H
Library for Modtronix im4OLED board with 128x64 OLED and 4 buttons. For details, see product page http://modtronix.com/im4oled.html. Is a clone of Adafruit_GFX library, with some additional code added.
Fork of
Adafruit_GFX
by 
Neal Horman
mx_gfx.cpp@27:dd7d538d3849, 2016-08-19 (annotated)
- Committer:
- modtronix-com
- Date:
- Fri Aug 19 15:44:25 2016 +1000
- Revision:
- 27:dd7d538d3849
- Parent:
- 26:ef08580c35df
Added tag v1.1 for changeset ef08580c35df
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| modtronix-com |
22:f63aeb3769b5 | 1 | /*********************************** |
| modtronix-com |
22:f63aeb3769b5 | 2 | This is a our graphics core library, for all our displays. |
| modtronix-com |
22:f63aeb3769b5 | 3 | We'll be adapting all the |
| modtronix-com |
22:f63aeb3769b5 | 4 | existing libaries to use this core to make updating, support |
| modtronix-com |
22:f63aeb3769b5 | 5 | and upgrading easier! |
| modtronix-com |
22:f63aeb3769b5 | 6 | |
| modtronix-com |
22:f63aeb3769b5 | 7 | Adafruit invests time and resources providing this open source code, |
| modtronix-com |
22:f63aeb3769b5 | 8 | please support Adafruit and open-source hardware by purchasing |
| modtronix-com |
22:f63aeb3769b5 | 9 | products from Adafruit! |
| modtronix-com |
22:f63aeb3769b5 | 10 | |
| modtronix-com |
22:f63aeb3769b5 | 11 | Written by Limor Fried/Ladyada for Adafruit Industries. |
| modtronix-com |
22:f63aeb3769b5 | 12 | BSD license, check license.txt for more information |
| modtronix-com |
22:f63aeb3769b5 | 13 | All text above must be included in any redistribution |
| modtronix-com |
22:f63aeb3769b5 | 14 | ****************************************/ |
| modtronix-com |
22:f63aeb3769b5 | 15 | |
| modtronix-com |
22:f63aeb3769b5 | 16 | /* |
| modtronix-com |
22:f63aeb3769b5 | 17 | * Modified by Neal Horman 7/14/2012 for use in mbed |
| modtronix-com |
22:f63aeb3769b5 | 18 | */ |
| modtronix-com |
22:f63aeb3769b5 | 19 | #include "mbed.h" |
| modtronix-com |
22:f63aeb3769b5 | 20 | #include "mx_gfx.h" |
| modtronix-com |
22:f63aeb3769b5 | 21 | #include "mx_gfx_font.h" |
| modtronix-com |
22:f63aeb3769b5 | 22 | |
| modtronix-com |
23:44309099c532 | 23 | #if (GFX_ENABLE_ABSTRACTS==1) |
| modtronix-com |
22:f63aeb3769b5 | 24 | // draw a circle outline |
| modtronix-com |
22:f63aeb3769b5 | 25 | void MxGfx::drawCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color) |
| modtronix-com |
22:f63aeb3769b5 | 26 | { |
| modtronix-com |
22:f63aeb3769b5 | 27 | int16_t f = 1 - r; |
| modtronix-com |
22:f63aeb3769b5 | 28 | int16_t ddF_x = 1; |
| modtronix-com |
22:f63aeb3769b5 | 29 | int16_t ddF_y = -2 * r; |
| modtronix-com |
22:f63aeb3769b5 | 30 | int16_t x = 0; |
| modtronix-com |
22:f63aeb3769b5 | 31 | int16_t y = r; |
| modtronix-com |
22:f63aeb3769b5 | 32 | |
| modtronix-com |
22:f63aeb3769b5 | 33 | drawPixel(x0, y0+r, color); |
| modtronix-com |
22:f63aeb3769b5 | 34 | drawPixel(x0, y0-r, color); |
| modtronix-com |
22:f63aeb3769b5 | 35 | drawPixel(x0+r, y0, color); |
| modtronix-com |
22:f63aeb3769b5 | 36 | drawPixel(x0-r, y0, color); |
| modtronix-com |
22:f63aeb3769b5 | 37 | |
| modtronix-com |
22:f63aeb3769b5 | 38 | while (x<y) |
| modtronix-com |
22:f63aeb3769b5 | 39 | { |
| modtronix-com |
22:f63aeb3769b5 | 40 | if (f >= 0) |
| modtronix-com |
22:f63aeb3769b5 | 41 | { |
| modtronix-com |
22:f63aeb3769b5 | 42 | y--; |
| modtronix-com |
22:f63aeb3769b5 | 43 | ddF_y += 2; |
| modtronix-com |
22:f63aeb3769b5 | 44 | f += ddF_y; |
| modtronix-com |
22:f63aeb3769b5 | 45 | } |
| modtronix-com |
22:f63aeb3769b5 | 46 | x++; |
| modtronix-com |
22:f63aeb3769b5 | 47 | ddF_x += 2; |
| modtronix-com |
22:f63aeb3769b5 | 48 | f += ddF_x; |
| modtronix-com |
22:f63aeb3769b5 | 49 | |
| modtronix-com |
22:f63aeb3769b5 | 50 | drawPixel(x0 + x, y0 + y, color); |
| modtronix-com |
22:f63aeb3769b5 | 51 | drawPixel(x0 - x, y0 + y, color); |
| modtronix-com |
22:f63aeb3769b5 | 52 | drawPixel(x0 + x, y0 - y, color); |
| modtronix-com |
22:f63aeb3769b5 | 53 | drawPixel(x0 - x, y0 - y, color); |
| modtronix-com |
22:f63aeb3769b5 | 54 | drawPixel(x0 + y, y0 + x, color); |
| modtronix-com |
22:f63aeb3769b5 | 55 | drawPixel(x0 - y, y0 + x, color); |
| modtronix-com |
22:f63aeb3769b5 | 56 | drawPixel(x0 + y, y0 - x, color); |
| modtronix-com |
22:f63aeb3769b5 | 57 | drawPixel(x0 - y, y0 - x, color); |
| modtronix-com |
22:f63aeb3769b5 | 58 | } |
| modtronix-com |
22:f63aeb3769b5 | 59 | } |
| modtronix-com |
22:f63aeb3769b5 | 60 | |
| modtronix-com |
22:f63aeb3769b5 | 61 | void MxGfx::drawCircleHelper( int16_t x0, int16_t y0, int16_t r, uint8_t cornername, uint16_t color) |
| modtronix-com |
22:f63aeb3769b5 | 62 | { |
| modtronix-com |
22:f63aeb3769b5 | 63 | int16_t f = 1 - r; |
| modtronix-com |
22:f63aeb3769b5 | 64 | int16_t ddF_x = 1; |
| modtronix-com |
22:f63aeb3769b5 | 65 | int16_t ddF_y = -2 * r; |
| modtronix-com |
22:f63aeb3769b5 | 66 | int16_t x = 0; |
| modtronix-com |
22:f63aeb3769b5 | 67 | int16_t y = r; |
| modtronix-com |
22:f63aeb3769b5 | 68 | |
| modtronix-com |
22:f63aeb3769b5 | 69 | while (x<y) |
| modtronix-com |
22:f63aeb3769b5 | 70 | { |
| modtronix-com |
22:f63aeb3769b5 | 71 | if (f >= 0) |
| modtronix-com |
22:f63aeb3769b5 | 72 | { |
| modtronix-com |
22:f63aeb3769b5 | 73 | y--; |
| modtronix-com |
22:f63aeb3769b5 | 74 | ddF_y += 2; |
| modtronix-com |
22:f63aeb3769b5 | 75 | f += ddF_y; |
| modtronix-com |
22:f63aeb3769b5 | 76 | } |
| modtronix-com |
22:f63aeb3769b5 | 77 | x++; |
| modtronix-com |
22:f63aeb3769b5 | 78 | ddF_x += 2; |
| modtronix-com |
22:f63aeb3769b5 | 79 | f += ddF_x; |
| modtronix-com |
22:f63aeb3769b5 | 80 | |
| modtronix-com |
22:f63aeb3769b5 | 81 | if (cornername & 0x4) |
| modtronix-com |
22:f63aeb3769b5 | 82 | { |
| modtronix-com |
22:f63aeb3769b5 | 83 | drawPixel(x0 + x, y0 + y, color); |
| modtronix-com |
22:f63aeb3769b5 | 84 | drawPixel(x0 + y, y0 + x, color); |
| modtronix-com |
22:f63aeb3769b5 | 85 | } |
| modtronix-com |
22:f63aeb3769b5 | 86 | |
| modtronix-com |
22:f63aeb3769b5 | 87 | if (cornername & 0x2) |
| modtronix-com |
22:f63aeb3769b5 | 88 | { |
| modtronix-com |
22:f63aeb3769b5 | 89 | drawPixel(x0 + x, y0 - y, color); |
| modtronix-com |
22:f63aeb3769b5 | 90 | drawPixel(x0 + y, y0 - x, color); |
| modtronix-com |
22:f63aeb3769b5 | 91 | } |
| modtronix-com |
22:f63aeb3769b5 | 92 | |
| modtronix-com |
22:f63aeb3769b5 | 93 | if (cornername & 0x8) |
| modtronix-com |
22:f63aeb3769b5 | 94 | { |
| modtronix-com |
22:f63aeb3769b5 | 95 | drawPixel(x0 - y, y0 + x, color); |
| modtronix-com |
22:f63aeb3769b5 | 96 | drawPixel(x0 - x, y0 + y, color); |
| modtronix-com |
22:f63aeb3769b5 | 97 | } |
| modtronix-com |
22:f63aeb3769b5 | 98 | |
| modtronix-com |
22:f63aeb3769b5 | 99 | if (cornername & 0x1) |
| modtronix-com |
22:f63aeb3769b5 | 100 | { |
| modtronix-com |
22:f63aeb3769b5 | 101 | drawPixel(x0 - y, y0 - x, color); |
| modtronix-com |
22:f63aeb3769b5 | 102 | drawPixel(x0 - x, y0 - y, color); |
| modtronix-com |
22:f63aeb3769b5 | 103 | } |
| modtronix-com |
22:f63aeb3769b5 | 104 | } |
| modtronix-com |
22:f63aeb3769b5 | 105 | } |
| modtronix-com |
22:f63aeb3769b5 | 106 | |
| modtronix-com |
22:f63aeb3769b5 | 107 | void MxGfx::fillCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color) |
| modtronix-com |
22:f63aeb3769b5 | 108 | { |
| modtronix-com |
22:f63aeb3769b5 | 109 | drawFastVLine(x0, y0-r, 2*r+1, color); |
| modtronix-com |
22:f63aeb3769b5 | 110 | fillCircleHelper(x0, y0, r, 3, 0, color); |
| modtronix-com |
22:f63aeb3769b5 | 111 | } |
| modtronix-com |
22:f63aeb3769b5 | 112 | |
| modtronix-com |
22:f63aeb3769b5 | 113 | // used to do circles and roundrects! |
| modtronix-com |
22:f63aeb3769b5 | 114 | void MxGfx::fillCircleHelper(int16_t x0, int16_t y0, int16_t r, uint8_t cornername, int16_t delta, uint16_t color) |
| modtronix-com |
22:f63aeb3769b5 | 115 | { |
| modtronix-com |
22:f63aeb3769b5 | 116 | int16_t f = 1 - r; |
| modtronix-com |
22:f63aeb3769b5 | 117 | int16_t ddF_x = 1; |
| modtronix-com |
22:f63aeb3769b5 | 118 | int16_t ddF_y = -2 * r; |
| modtronix-com |
22:f63aeb3769b5 | 119 | int16_t x = 0; |
| modtronix-com |
22:f63aeb3769b5 | 120 | int16_t y = r; |
| modtronix-com |
22:f63aeb3769b5 | 121 | |
| modtronix-com |
22:f63aeb3769b5 | 122 | while (x<y) |
| modtronix-com |
22:f63aeb3769b5 | 123 | { |
| modtronix-com |
22:f63aeb3769b5 | 124 | if (f >= 0) |
| modtronix-com |
22:f63aeb3769b5 | 125 | { |
| modtronix-com |
22:f63aeb3769b5 | 126 | y--; |
| modtronix-com |
22:f63aeb3769b5 | 127 | ddF_y += 2; |
| modtronix-com |
22:f63aeb3769b5 | 128 | f += ddF_y; |
| modtronix-com |
22:f63aeb3769b5 | 129 | } |
| modtronix-com |
22:f63aeb3769b5 | 130 | x++; |
| modtronix-com |
22:f63aeb3769b5 | 131 | ddF_x += 2; |
| modtronix-com |
22:f63aeb3769b5 | 132 | f += ddF_x; |
| modtronix-com |
22:f63aeb3769b5 | 133 | |
| modtronix-com |
22:f63aeb3769b5 | 134 | if (cornername & 0x1) |
| modtronix-com |
22:f63aeb3769b5 | 135 | { |
| modtronix-com |
22:f63aeb3769b5 | 136 | drawFastVLine(x0+x, y0-y, 2*y+1+delta, color); |
| modtronix-com |
22:f63aeb3769b5 | 137 | drawFastVLine(x0+y, y0-x, 2*x+1+delta, color); |
| modtronix-com |
22:f63aeb3769b5 | 138 | } |
| modtronix-com |
22:f63aeb3769b5 | 139 | |
| modtronix-com |
22:f63aeb3769b5 | 140 | if (cornername & 0x2) |
| modtronix-com |
22:f63aeb3769b5 | 141 | { |
| modtronix-com |
22:f63aeb3769b5 | 142 | drawFastVLine(x0-x, y0-y, 2*y+1+delta, color); |
| modtronix-com |
22:f63aeb3769b5 | 143 | drawFastVLine(x0-y, y0-x, 2*x+1+delta, color); |
| modtronix-com |
22:f63aeb3769b5 | 144 | } |
| modtronix-com |
22:f63aeb3769b5 | 145 | } |
| modtronix-com |
22:f63aeb3769b5 | 146 | } |
| modtronix-com |
22:f63aeb3769b5 | 147 | #endif |
| modtronix-com |
22:f63aeb3769b5 | 148 | |
| modtronix-com |
23:44309099c532 | 149 | #if defined(GFX_ENABLE_ABSTRACTS) || (GFX_SIZEABLE_TEXT==1) |
| modtronix-com |
22:f63aeb3769b5 | 150 | // bresenham's algorithm - thx wikpedia |
| modtronix-com |
22:f63aeb3769b5 | 151 | void MxGfx::drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t color) |
| modtronix-com |
22:f63aeb3769b5 | 152 | { |
| modtronix-com |
22:f63aeb3769b5 | 153 | int16_t steep = abs(y1 - y0) > abs(x1 - x0); |
| modtronix-com |
22:f63aeb3769b5 | 154 | |
| modtronix-com |
22:f63aeb3769b5 | 155 | if (steep) |
| modtronix-com |
22:f63aeb3769b5 | 156 | { |
| modtronix-com |
22:f63aeb3769b5 | 157 | swap(x0, y0); |
| modtronix-com |
22:f63aeb3769b5 | 158 | swap(x1, y1); |
| modtronix-com |
22:f63aeb3769b5 | 159 | } |
| modtronix-com |
22:f63aeb3769b5 | 160 | |
| modtronix-com |
22:f63aeb3769b5 | 161 | if (x0 > x1) |
| modtronix-com |
22:f63aeb3769b5 | 162 | { |
| modtronix-com |
22:f63aeb3769b5 | 163 | swap(x0, x1); |
| modtronix-com |
22:f63aeb3769b5 | 164 | swap(y0, y1); |
| modtronix-com |
22:f63aeb3769b5 | 165 | } |
| modtronix-com |
22:f63aeb3769b5 | 166 | |
| modtronix-com |
22:f63aeb3769b5 | 167 | int16_t dx, dy; |
| modtronix-com |
22:f63aeb3769b5 | 168 | dx = x1 - x0; |
| modtronix-com |
22:f63aeb3769b5 | 169 | dy = abs(y1 - y0); |
| modtronix-com |
22:f63aeb3769b5 | 170 | |
| modtronix-com |
22:f63aeb3769b5 | 171 | int16_t err = dx / 2; |
| modtronix-com |
22:f63aeb3769b5 | 172 | int16_t ystep; |
| modtronix-com |
22:f63aeb3769b5 | 173 | |
| modtronix-com |
22:f63aeb3769b5 | 174 | if (y0 < y1) |
| modtronix-com |
22:f63aeb3769b5 | 175 | ystep = 1; |
| modtronix-com |
22:f63aeb3769b5 | 176 | else |
| modtronix-com |
22:f63aeb3769b5 | 177 | ystep = -1; |
| modtronix-com |
22:f63aeb3769b5 | 178 | |
| modtronix-com |
22:f63aeb3769b5 | 179 | for (; x0<=x1; x0++) |
| modtronix-com |
22:f63aeb3769b5 | 180 | { |
| modtronix-com |
22:f63aeb3769b5 | 181 | if (steep) |
| modtronix-com |
22:f63aeb3769b5 | 182 | drawPixel(y0, x0, color); |
| modtronix-com |
22:f63aeb3769b5 | 183 | else |
| modtronix-com |
22:f63aeb3769b5 | 184 | drawPixel(x0, y0, color); |
| modtronix-com |
22:f63aeb3769b5 | 185 | |
| modtronix-com |
22:f63aeb3769b5 | 186 | err -= dy; |
| modtronix-com |
22:f63aeb3769b5 | 187 | if (err < 0) |
| modtronix-com |
22:f63aeb3769b5 | 188 | { |
| modtronix-com |
22:f63aeb3769b5 | 189 | y0 += ystep; |
| modtronix-com |
22:f63aeb3769b5 | 190 | err += dx; |
| modtronix-com |
22:f63aeb3769b5 | 191 | } |
| modtronix-com |
22:f63aeb3769b5 | 192 | } |
| modtronix-com |
22:f63aeb3769b5 | 193 | } |
| modtronix-com |
22:f63aeb3769b5 | 194 | |
| modtronix-com |
22:f63aeb3769b5 | 195 | void MxGfx::drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color) |
| modtronix-com |
22:f63aeb3769b5 | 196 | { |
| modtronix-com |
22:f63aeb3769b5 | 197 | // stupidest version - update in subclasses if desired! |
| modtronix-com |
22:f63aeb3769b5 | 198 | drawLine(x, y, x, y+h-1, color); |
| modtronix-com |
22:f63aeb3769b5 | 199 | } |
| modtronix-com |
22:f63aeb3769b5 | 200 | |
| modtronix-com |
22:f63aeb3769b5 | 201 | /** Draw and fill a rectangle. The rectangle starts at given point, and extends DOWN(h) and RIGHTH(w) |
| modtronix-com |
23:44309099c532 | 202 | * @note GFX_ENABLE_ABSTRACTS or GFX_SIZEABLE_TEXT must be defined in im4oled_config.h |
| modtronix-com |
22:f63aeb3769b5 | 203 | * |
| modtronix-com |
22:f63aeb3769b5 | 204 | * @param x X coordinate, a value from 0 - (width-1) |
| modtronix-com |
22:f63aeb3769b5 | 205 | * @param y Y coordinate, a value from 0 - (height-1) |
| modtronix-com |
22:f63aeb3769b5 | 206 | * @param w Width from given x,y coordinate. Extends to the Right of given x,y |
| modtronix-com |
22:f63aeb3769b5 | 207 | * @param h Height from given x,y coordinate. Extends Down of given x,y |
| modtronix-com |
22:f63aeb3769b5 | 208 | * @param color For monochrome display, 0=off, 1=on |
| modtronix-com |
22:f63aeb3769b5 | 209 | */ |
| modtronix-com |
22:f63aeb3769b5 | 210 | void MxGfx::fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color) |
| modtronix-com |
22:f63aeb3769b5 | 211 | { |
| modtronix-com |
22:f63aeb3769b5 | 212 | // stupidest version - update in subclasses if desired! |
| modtronix-com |
22:f63aeb3769b5 | 213 | for (int16_t i=x; i<x+w; i++) |
| modtronix-com |
22:f63aeb3769b5 | 214 | drawFastVLine(i, y, h, color); |
| modtronix-com |
22:f63aeb3769b5 | 215 | } |
| modtronix-com |
22:f63aeb3769b5 | 216 | #endif |
| modtronix-com |
22:f63aeb3769b5 | 217 | |
| modtronix-com |
23:44309099c532 | 218 | #if (GFX_ENABLE_ABSTRACTS==1) |
| modtronix-com |
22:f63aeb3769b5 | 219 | // draw a rectangle |
| modtronix-com |
22:f63aeb3769b5 | 220 | void MxGfx::drawRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color) |
| modtronix-com |
22:f63aeb3769b5 | 221 | { |
| modtronix-com |
22:f63aeb3769b5 | 222 | drawFastHLine(x, y, w, color); |
| modtronix-com |
22:f63aeb3769b5 | 223 | drawFastHLine(x, y+h-1, w, color); |
| modtronix-com |
22:f63aeb3769b5 | 224 | drawFastVLine(x, y, h, color); |
| modtronix-com |
22:f63aeb3769b5 | 225 | drawFastVLine(x+w-1, y, h, color); |
| modtronix-com |
22:f63aeb3769b5 | 226 | } |
| modtronix-com |
22:f63aeb3769b5 | 227 | |
| modtronix-com |
22:f63aeb3769b5 | 228 | void MxGfx::drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color) |
| modtronix-com |
22:f63aeb3769b5 | 229 | { |
| modtronix-com |
22:f63aeb3769b5 | 230 | // stupidest version - update in subclasses if desired! |
| modtronix-com |
22:f63aeb3769b5 | 231 | drawLine(x, y, x+w-1, y, color); |
| modtronix-com |
22:f63aeb3769b5 | 232 | } |
| modtronix-com |
22:f63aeb3769b5 | 233 | |
| modtronix-com |
22:f63aeb3769b5 | 234 | void MxGfx::fillScreen(uint16_t color) |
| modtronix-com |
22:f63aeb3769b5 | 235 | { |
| modtronix-com |
22:f63aeb3769b5 | 236 | fillRect(0, 0, _width, _height, color); |
| modtronix-com |
22:f63aeb3769b5 | 237 | } |
| modtronix-com |
22:f63aeb3769b5 | 238 | |
| modtronix-com |
22:f63aeb3769b5 | 239 | // draw a rounded rectangle! |
| modtronix-com |
22:f63aeb3769b5 | 240 | void MxGfx::drawRoundRect(int16_t x, int16_t y, int16_t w, int16_t h, int16_t r, uint16_t color) |
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22:f63aeb3769b5 | 241 | { |
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22:f63aeb3769b5 | 242 | // smarter version |
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22:f63aeb3769b5 | 243 | drawFastHLine(x+r , y , w-2*r, color); // Top |
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22:f63aeb3769b5 | 244 | drawFastHLine(x+r , y+h-1, w-2*r, color); // Bottom |
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22:f63aeb3769b5 | 245 | drawFastVLine( x , y+r , h-2*r, color); // Left |
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22:f63aeb3769b5 | 246 | drawFastVLine( x+w-1, y+r , h-2*r, color); // Right |
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22:f63aeb3769b5 | 247 | // draw four corners |
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22:f63aeb3769b5 | 248 | drawCircleHelper(x+r , y+r , r, 1, color); |
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22:f63aeb3769b5 | 249 | drawCircleHelper(x+w-r-1, y+r , r, 2, color); |
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22:f63aeb3769b5 | 250 | drawCircleHelper(x+w-r-1, y+h-r-1, r, 4, color); |
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22:f63aeb3769b5 | 251 | drawCircleHelper(x+r , y+h-r-1, r, 8, color); |
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22:f63aeb3769b5 | 252 | } |
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22:f63aeb3769b5 | 253 | |
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22:f63aeb3769b5 | 254 | // fill a rounded rectangle! |
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22:f63aeb3769b5 | 255 | void MxGfx::fillRoundRect(int16_t x, int16_t y, int16_t w, int16_t h, int16_t r, uint16_t color) |
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22:f63aeb3769b5 | 256 | { |
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22:f63aeb3769b5 | 257 | // smarter version |
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22:f63aeb3769b5 | 258 | fillRect(x+r, y, w-2*r, h, color); |
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22:f63aeb3769b5 | 259 | |
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22:f63aeb3769b5 | 260 | // draw four corners |
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22:f63aeb3769b5 | 261 | fillCircleHelper(x+w-r-1, y+r, r, 1, h-2*r-1, color); |
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22:f63aeb3769b5 | 262 | fillCircleHelper(x+r , y+r, r, 2, h-2*r-1, color); |
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22:f63aeb3769b5 | 263 | } |
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22:f63aeb3769b5 | 264 | |
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22:f63aeb3769b5 | 265 | // draw a triangle! |
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22:f63aeb3769b5 | 266 | void MxGfx::drawTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color) |
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22:f63aeb3769b5 | 267 | { |
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22:f63aeb3769b5 | 268 | drawLine(x0, y0, x1, y1, color); |
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22:f63aeb3769b5 | 269 | drawLine(x1, y1, x2, y2, color); |
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22:f63aeb3769b5 | 270 | drawLine(x2, y2, x0, y0, color); |
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22:f63aeb3769b5 | 271 | } |
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22:f63aeb3769b5 | 272 | |
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22:f63aeb3769b5 | 273 | // fill a triangle! |
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22:f63aeb3769b5 | 274 | void MxGfx::fillTriangle ( int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color) |
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22:f63aeb3769b5 | 275 | { |
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22:f63aeb3769b5 | 276 | int16_t a, b, y, last; |
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22:f63aeb3769b5 | 277 | |
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22:f63aeb3769b5 | 278 | // Sort coordinates by Y order (y2 >= y1 >= y0) |
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22:f63aeb3769b5 | 279 | if (y0 > y1) |
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22:f63aeb3769b5 | 280 | swap(y0, y1); swap(x0, x1); |
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22:f63aeb3769b5 | 281 | |
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22:f63aeb3769b5 | 282 | if (y1 > y2) |
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22:f63aeb3769b5 | 283 | swap(y2, y1); swap(x2, x1); |
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22:f63aeb3769b5 | 284 | |
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22:f63aeb3769b5 | 285 | if (y0 > y1) |
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22:f63aeb3769b5 | 286 | swap(y0, y1); swap(x0, x1); |
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22:f63aeb3769b5 | 287 | |
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22:f63aeb3769b5 | 288 | |
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22:f63aeb3769b5 | 289 | if(y0 == y2) |
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22:f63aeb3769b5 | 290 | { // Handle awkward all-on-same-line case as its own thing |
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22:f63aeb3769b5 | 291 | a = b = x0; |
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22:f63aeb3769b5 | 292 | if(x1 < a) |
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22:f63aeb3769b5 | 293 | a = x1; |
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22:f63aeb3769b5 | 294 | else if(x1 > b) |
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22:f63aeb3769b5 | 295 | b = x1; |
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22:f63aeb3769b5 | 296 | |
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22:f63aeb3769b5 | 297 | if(x2 < a) |
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22:f63aeb3769b5 | 298 | a = x2; |
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22:f63aeb3769b5 | 299 | else if(x2 > b) b = x2; |
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22:f63aeb3769b5 | 300 | drawFastHLine(a, y0, b-a+1, color); |
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22:f63aeb3769b5 | 301 | return; |
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22:f63aeb3769b5 | 302 | } |
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22:f63aeb3769b5 | 303 | |
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22:f63aeb3769b5 | 304 | int16_t |
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22:f63aeb3769b5 | 305 | dx01 = x1 - x0, |
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22:f63aeb3769b5 | 306 | dy01 = y1 - y0, |
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22:f63aeb3769b5 | 307 | dx02 = x2 - x0, |
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22:f63aeb3769b5 | 308 | dy02 = y2 - y0, |
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22:f63aeb3769b5 | 309 | dx12 = x2 - x1, |
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22:f63aeb3769b5 | 310 | dy12 = y2 - y1, |
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22:f63aeb3769b5 | 311 | sa = 0, |
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22:f63aeb3769b5 | 312 | sb = 0; |
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22:f63aeb3769b5 | 313 | |
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22:f63aeb3769b5 | 314 | // For upper part of triangle, find scanline crossings for segments |
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22:f63aeb3769b5 | 315 | // 0-1 and 0-2. If y1=y2 (flat-bottomed triangle), the scanline y1 |
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22:f63aeb3769b5 | 316 | // is included here (and second loop will be skipped, avoiding a /0 |
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22:f63aeb3769b5 | 317 | // error there), otherwise scanline y1 is skipped here and handled |
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22:f63aeb3769b5 | 318 | // in the second loop...which also avoids a /0 error here if y0=y1 |
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22:f63aeb3769b5 | 319 | // (flat-topped triangle). |
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22:f63aeb3769b5 | 320 | if(y1 == y2) |
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22:f63aeb3769b5 | 321 | last = y1; // Include y1 scanline |
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22:f63aeb3769b5 | 322 | else |
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22:f63aeb3769b5 | 323 | last = y1-1; // Skip it |
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22:f63aeb3769b5 | 324 | |
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22:f63aeb3769b5 | 325 | for(y=y0; y<=last; y++) |
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22:f63aeb3769b5 | 326 | { |
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22:f63aeb3769b5 | 327 | a = x0 + sa / dy01; |
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22:f63aeb3769b5 | 328 | b = x0 + sb / dy02; |
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22:f63aeb3769b5 | 329 | sa += dx01; |
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22:f63aeb3769b5 | 330 | sb += dx02; |
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22:f63aeb3769b5 | 331 | /* longhand: |
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22:f63aeb3769b5 | 332 | a = x0 + (x1 - x0) * (y - y0) / (y1 - y0); |
| modtronix-com |
22:f63aeb3769b5 | 333 | b = x0 + (x2 - x0) * (y - y0) / (y2 - y0); |
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22:f63aeb3769b5 | 334 | */ |
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22:f63aeb3769b5 | 335 | if(a > b) |
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22:f63aeb3769b5 | 336 | swap(a,b); |
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22:f63aeb3769b5 | 337 | drawFastHLine(a, y, b-a+1, color); |
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22:f63aeb3769b5 | 338 | } |
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22:f63aeb3769b5 | 339 | |
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22:f63aeb3769b5 | 340 | // For lower part of triangle, find scanline crossings for segments |
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22:f63aeb3769b5 | 341 | // 0-2 and 1-2. This loop is skipped if y1=y2. |
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22:f63aeb3769b5 | 342 | sa = dx12 * (y - y1); |
| modtronix-com |
22:f63aeb3769b5 | 343 | sb = dx02 * (y - y0); |
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22:f63aeb3769b5 | 344 | for(; y<=y2; y++) |
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22:f63aeb3769b5 | 345 | { |
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22:f63aeb3769b5 | 346 | a = x1 + sa / dy12; |
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22:f63aeb3769b5 | 347 | b = x0 + sb / dy02; |
| modtronix-com |
22:f63aeb3769b5 | 348 | sa += dx12; |
| modtronix-com |
22:f63aeb3769b5 | 349 | sb += dx02; |
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22:f63aeb3769b5 | 350 | /* longhand: |
| modtronix-com |
22:f63aeb3769b5 | 351 | a = x1 + (x2 - x1) * (y - y1) / (y2 - y1); |
| modtronix-com |
22:f63aeb3769b5 | 352 | b = x0 + (x2 - x0) * (y - y0) / (y2 - y0); |
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22:f63aeb3769b5 | 353 | */ |
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22:f63aeb3769b5 | 354 | if(a > b) |
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22:f63aeb3769b5 | 355 | swap(a,b); |
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22:f63aeb3769b5 | 356 | drawFastHLine(a, y, b-a+1, color); |
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22:f63aeb3769b5 | 357 | } |
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22:f63aeb3769b5 | 358 | } |
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22:f63aeb3769b5 | 359 | |
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22:f63aeb3769b5 | 360 | void MxGfx::drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color) |
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22:f63aeb3769b5 | 361 | { |
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22:f63aeb3769b5 | 362 | uint8_t mask; |
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22:f63aeb3769b5 | 363 | |
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22:f63aeb3769b5 | 364 | for (int16_t j=0; j<h; j++) |
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22:f63aeb3769b5 | 365 | { |
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22:f63aeb3769b5 | 366 | for (int16_t i=0; i<w; i++ ) |
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22:f63aeb3769b5 | 367 | { |
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22:f63aeb3769b5 | 368 | mask = 0x01 << (j%8); |
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22:f63aeb3769b5 | 369 | if (bitmap[i + (j/8)*w] & mask) |
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22:f63aeb3769b5 | 370 | drawPixel(x+i, y+j, color); |
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22:f63aeb3769b5 | 371 | } |
| modtronix-com |
22:f63aeb3769b5 | 372 | } |
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22:f63aeb3769b5 | 373 | } |
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22:f63aeb3769b5 | 374 | #endif |
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22:f63aeb3769b5 | 375 | |
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22:f63aeb3769b5 | 376 | size_t MxGfx::writeChar(uint8_t c) |
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22:f63aeb3769b5 | 377 | { |
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22:f63aeb3769b5 | 378 | if (c == '\n') |
| modtronix-com |
22:f63aeb3769b5 | 379 | { |
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22:f63aeb3769b5 | 380 | cursor_y += textsize*8; |
| modtronix-com |
22:f63aeb3769b5 | 381 | cursor_x = 0; |
| modtronix-com |
22:f63aeb3769b5 | 382 | } |
| modtronix-com |
22:f63aeb3769b5 | 383 | else if (c == '\r') |
| modtronix-com |
22:f63aeb3769b5 | 384 | cursor_x = 0; |
| modtronix-com |
22:f63aeb3769b5 | 385 | else |
| modtronix-com |
22:f63aeb3769b5 | 386 | { |
| modtronix-com |
22:f63aeb3769b5 | 387 | drawChar(cursor_x, cursor_y, c, textcolor, textbgcolor, textsize); |
| modtronix-com |
22:f63aeb3769b5 | 388 | cursor_x += textsize*6; |
| modtronix-com |
22:f63aeb3769b5 | 389 | if (wrap && (cursor_x > (_width - textsize*6))) |
| modtronix-com |
22:f63aeb3769b5 | 390 | { |
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22:f63aeb3769b5 | 391 | cursor_y += textsize*8; |
| modtronix-com |
22:f63aeb3769b5 | 392 | cursor_x = 0; |
| modtronix-com |
22:f63aeb3769b5 | 393 | } |
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22:f63aeb3769b5 | 394 | } |
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22:f63aeb3769b5 | 395 | return 1; |
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22:f63aeb3769b5 | 396 | } |
| modtronix-com |
22:f63aeb3769b5 | 397 | |
| modtronix-com |
22:f63aeb3769b5 | 398 | // draw a character |
| modtronix-com |
22:f63aeb3769b5 | 399 | void MxGfx::drawChar(int16_t x, int16_t y, unsigned char c, uint16_t color, uint16_t bg, uint8_t size) |
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22:f63aeb3769b5 | 400 | { |
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22:f63aeb3769b5 | 401 | if( |
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22:f63aeb3769b5 | 402 | (x >= _width) || // Clip right |
| modtronix-com |
22:f63aeb3769b5 | 403 | (y >= _height) || // Clip bottom |
| modtronix-com |
22:f63aeb3769b5 | 404 | ((x + 5 * size - 1) < 0) || // Clip left |
| modtronix-com |
22:f63aeb3769b5 | 405 | ((y + 8 * size - 1) < 0) // Clip top |
| modtronix-com |
22:f63aeb3769b5 | 406 | ) |
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22:f63aeb3769b5 | 407 | return; |
| modtronix-com |
22:f63aeb3769b5 | 408 | |
| modtronix-com |
22:f63aeb3769b5 | 409 | for (int8_t i=0; i<6; i++ ) |
| modtronix-com |
22:f63aeb3769b5 | 410 | { |
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22:f63aeb3769b5 | 411 | uint8_t line = 0; |
| modtronix-com |
22:f63aeb3769b5 | 412 | |
| modtronix-com |
22:f63aeb3769b5 | 413 | if (i == 5) |
| modtronix-com |
22:f63aeb3769b5 | 414 | line = 0x0; |
| modtronix-com |
22:f63aeb3769b5 | 415 | else |
| modtronix-com |
22:f63aeb3769b5 | 416 | line = font5x7[(c*5)+i]; |
| modtronix-com |
22:f63aeb3769b5 | 417 | |
| modtronix-com |
22:f63aeb3769b5 | 418 | for (int8_t j = 0; j<8; j++) |
| modtronix-com |
22:f63aeb3769b5 | 419 | { |
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22:f63aeb3769b5 | 420 | if (line & 0x1) |
| modtronix-com |
22:f63aeb3769b5 | 421 | { |
| modtronix-com |
23:44309099c532 | 422 | #if (GFX_ENABLE_ABSTRACTS==1) || (GFX_SIZEABLE_TEXT==1) |
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22:f63aeb3769b5 | 423 | if (size == 1) // default size |
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22:f63aeb3769b5 | 424 | drawPixel(x+i, y+j, color); |
| modtronix-com |
22:f63aeb3769b5 | 425 | else // big size |
| modtronix-com |
22:f63aeb3769b5 | 426 | fillRect(x+(i*size), y+(j*size), size, size, color); |
| modtronix-com |
22:f63aeb3769b5 | 427 | #else |
| modtronix-com |
22:f63aeb3769b5 | 428 | drawPixel(x+i, y+j, color); |
| modtronix-com |
22:f63aeb3769b5 | 429 | #endif |
| modtronix-com |
22:f63aeb3769b5 | 430 | } |
| modtronix-com |
22:f63aeb3769b5 | 431 | else if (bg != color) |
| modtronix-com |
22:f63aeb3769b5 | 432 | { |
| modtronix-com |
23:44309099c532 | 433 | #if (GFX_ENABLE_ABSTRACTS==1) || (GFX_SIZEABLE_TEXT==1) |
| modtronix-com |
22:f63aeb3769b5 | 434 | if (size == 1) // default size |
| modtronix-com |
22:f63aeb3769b5 | 435 | drawPixel(x+i, y+j, bg); |
| modtronix-com |
22:f63aeb3769b5 | 436 | else // big size |
| modtronix-com |
22:f63aeb3769b5 | 437 | fillRect(x+i*size, y+j*size, size, size, bg); |
| modtronix-com |
22:f63aeb3769b5 | 438 | #else |
| modtronix-com |
22:f63aeb3769b5 | 439 | drawPixel(x+i, y+j, bg); |
| modtronix-com |
22:f63aeb3769b5 | 440 | #endif |
| modtronix-com |
22:f63aeb3769b5 | 441 | } |
| modtronix-com |
22:f63aeb3769b5 | 442 | line >>= 1; |
| modtronix-com |
22:f63aeb3769b5 | 443 | } |
| modtronix-com |
22:f63aeb3769b5 | 444 | } |
| modtronix-com |
22:f63aeb3769b5 | 445 | } |
| modtronix-com |
22:f63aeb3769b5 | 446 | |
| modtronix-com |
22:f63aeb3769b5 | 447 | void MxGfx::setRotation(uint8_t x) |
| modtronix-com |
22:f63aeb3769b5 | 448 | { |
| modtronix-com |
22:f63aeb3769b5 | 449 | x %= 4; // cant be higher than 3 |
| modtronix-com |
22:f63aeb3769b5 | 450 | rotation = x; |
| modtronix-com |
22:f63aeb3769b5 | 451 | switch (x) |
| modtronix-com |
22:f63aeb3769b5 | 452 | { |
| modtronix-com |
22:f63aeb3769b5 | 453 | case 0: |
| modtronix-com |
22:f63aeb3769b5 | 454 | case 2: |
| modtronix-com |
22:f63aeb3769b5 | 455 | _width = _rawWidth; |
| modtronix-com |
22:f63aeb3769b5 | 456 | _height = _rawHeight; |
| modtronix-com |
22:f63aeb3769b5 | 457 | break; |
| modtronix-com |
22:f63aeb3769b5 | 458 | case 1: |
| modtronix-com |
22:f63aeb3769b5 | 459 | case 3: |
| modtronix-com |
22:f63aeb3769b5 | 460 | _width = _rawHeight; |
| modtronix-com |
22:f63aeb3769b5 | 461 | _height = _rawWidth; |
| modtronix-com |
22:f63aeb3769b5 | 462 | break; |
| modtronix-com |
22:f63aeb3769b5 | 463 | } |
| modtronix-com |
22:f63aeb3769b5 | 464 | } |