Revised to disable BLE for radio communication as needed.
Dependencies: BLE_API nRF51822 mbed-dev-bin
source/types/MicroBitImage.cpp@74:26717338739d, 2019-11-26 (annotated)
- Committer:
- tsfarber
- Date:
- Tue Nov 26 04:12:46 2019 +0000
- Revision:
- 74:26717338739d
- Parent:
- 69:b62f231e51ce
This program combines samples programs radio TX and radio RX so that both units can send or receive depending on which unit's buttons are pressed. Tested successfully. MicroBitConfig.h has been edited to disable BLE.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Jonathan Austin |
1:8aa5cdb4ab67 | 1 | /* |
Jonathan Austin |
1:8aa5cdb4ab67 | 2 | The MIT License (MIT) |
Jonathan Austin |
1:8aa5cdb4ab67 | 3 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 4 | Copyright (c) 2016 British Broadcasting Corporation. |
Jonathan Austin |
1:8aa5cdb4ab67 | 5 | This software is provided by Lancaster University by arrangement with the BBC. |
Jonathan Austin |
1:8aa5cdb4ab67 | 6 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 7 | Permission is hereby granted, free of charge, to any person obtaining a |
Jonathan Austin |
1:8aa5cdb4ab67 | 8 | copy of this software and associated documentation files (the "Software"), |
Jonathan Austin |
1:8aa5cdb4ab67 | 9 | to deal in the Software without restriction, including without limitation |
Jonathan Austin |
1:8aa5cdb4ab67 | 10 | the rights to use, copy, modify, merge, publish, distribute, sublicense, |
Jonathan Austin |
1:8aa5cdb4ab67 | 11 | and/or sell copies of the Software, and to permit persons to whom the |
Jonathan Austin |
1:8aa5cdb4ab67 | 12 | Software is furnished to do so, subject to the following conditions: |
Jonathan Austin |
1:8aa5cdb4ab67 | 13 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 14 | The above copyright notice and this permission notice shall be included in |
Jonathan Austin |
1:8aa5cdb4ab67 | 15 | all copies or substantial portions of the Software. |
Jonathan Austin |
1:8aa5cdb4ab67 | 16 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 17 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
Jonathan Austin |
1:8aa5cdb4ab67 | 18 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
Jonathan Austin |
1:8aa5cdb4ab67 | 19 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
Jonathan Austin |
1:8aa5cdb4ab67 | 20 | THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
Jonathan Austin |
1:8aa5cdb4ab67 | 21 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
Jonathan Austin |
1:8aa5cdb4ab67 | 22 | FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
Jonathan Austin |
1:8aa5cdb4ab67 | 23 | DEALINGS IN THE SOFTWARE. |
Jonathan Austin |
1:8aa5cdb4ab67 | 24 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 25 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 26 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 27 | * Class definition for a MicroBitImage. |
Jonathan Austin |
1:8aa5cdb4ab67 | 28 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 29 | * An MicroBitImage is a simple bitmap representation of an image. |
Jonathan Austin |
1:8aa5cdb4ab67 | 30 | * n.b. This is a mutable, managed type. |
Jonathan Austin |
1:8aa5cdb4ab67 | 31 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 32 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 33 | #include "MicroBitConfig.h" |
Jonathan Austin |
1:8aa5cdb4ab67 | 34 | #include "MicroBitImage.h" |
Jonathan Austin |
1:8aa5cdb4ab67 | 35 | #include "MicroBitFont.h" |
Jonathan Austin |
1:8aa5cdb4ab67 | 36 | #include "MicroBitCompat.h" |
Jonathan Austin |
1:8aa5cdb4ab67 | 37 | #include "ManagedString.h" |
Jonathan Austin |
1:8aa5cdb4ab67 | 38 | #include "ErrorNo.h" |
Jonathan Austin |
1:8aa5cdb4ab67 | 39 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 40 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 41 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 42 | * The null image. We actally create a small one byte buffer here, just to keep NULL pointers out of the equation. |
Jonathan Austin |
1:8aa5cdb4ab67 | 43 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 44 | static const uint16_t empty[] __attribute__ ((aligned (4))) = { 0xffff, 1, 1, 0, }; |
Jonathan Austin |
1:8aa5cdb4ab67 | 45 | MicroBitImage MicroBitImage::EmptyImage((ImageData*)(void*)empty); |
Jonathan Austin |
1:8aa5cdb4ab67 | 46 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 47 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 48 | * Default Constructor. |
Jonathan Austin |
1:8aa5cdb4ab67 | 49 | * Creates a new reference to the empty MicroBitImage bitmap |
Jonathan Austin |
1:8aa5cdb4ab67 | 50 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 51 | * @code |
Jonathan Austin |
1:8aa5cdb4ab67 | 52 | * MicroBitImage i(); //an empty image instance |
Jonathan Austin |
1:8aa5cdb4ab67 | 53 | * @endcode |
Jonathan Austin |
1:8aa5cdb4ab67 | 54 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 55 | MicroBitImage::MicroBitImage() |
Jonathan Austin |
1:8aa5cdb4ab67 | 56 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 57 | // Create new reference to the EmptyImage and we're done. |
Jonathan Austin |
1:8aa5cdb4ab67 | 58 | init_empty(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 59 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 60 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 61 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 62 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 63 | * Constructor. |
Jonathan Austin |
1:8aa5cdb4ab67 | 64 | * Create a blank bitmap representation of a given size. |
Jonathan Austin |
1:8aa5cdb4ab67 | 65 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 66 | * @param x the width of the image. |
Jonathan Austin |
1:8aa5cdb4ab67 | 67 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 68 | * @param y the height of the image. |
Jonathan Austin |
1:8aa5cdb4ab67 | 69 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 70 | * Bitmap buffer is linear, with 8 bits per pixel, row by row, |
Jonathan Austin |
1:8aa5cdb4ab67 | 71 | * top to bottom with no word alignment. Stride is therefore the image width in pixels. |
Jonathan Austin |
1:8aa5cdb4ab67 | 72 | * in where w and h are width and height respectively, the layout is therefore: |
Jonathan Austin |
1:8aa5cdb4ab67 | 73 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 74 | * |[0,0]...[w,o][1,0]...[w,1] ... [[w,h] |
Jonathan Austin |
1:8aa5cdb4ab67 | 75 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 76 | * A copy of the image is made in RAM, as images are mutable. |
Jonathan Austin |
1:8aa5cdb4ab67 | 77 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 78 | * TODO: Consider an immutable flavour, which might save us RAM for animation spritesheets... |
Jonathan Austin |
1:8aa5cdb4ab67 | 79 | * ...as these could be kept in FLASH. |
Jonathan Austin |
1:8aa5cdb4ab67 | 80 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 81 | MicroBitImage::MicroBitImage(const int16_t x, const int16_t y) |
Jonathan Austin |
1:8aa5cdb4ab67 | 82 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 83 | this->init(x,y,NULL); |
Jonathan Austin |
1:8aa5cdb4ab67 | 84 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 85 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 86 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 87 | * Copy Constructor. |
Jonathan Austin |
1:8aa5cdb4ab67 | 88 | * Add ourselves as a reference to an existing MicroBitImage. |
Jonathan Austin |
1:8aa5cdb4ab67 | 89 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 90 | * @param image The MicroBitImage to reference. |
Jonathan Austin |
1:8aa5cdb4ab67 | 91 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 92 | * @code |
Jonathan Austin |
1:8aa5cdb4ab67 | 93 | * MicroBitImage i("0,1,0,1,0\n"); |
Jonathan Austin |
1:8aa5cdb4ab67 | 94 | * MicroBitImage i2(i); //points to i |
Jonathan Austin |
1:8aa5cdb4ab67 | 95 | * @endcode |
Jonathan Austin |
1:8aa5cdb4ab67 | 96 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 97 | MicroBitImage::MicroBitImage(const MicroBitImage &image) |
Jonathan Austin |
1:8aa5cdb4ab67 | 98 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 99 | ptr = image.ptr; |
Jonathan Austin |
1:8aa5cdb4ab67 | 100 | ptr->incr(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 101 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 102 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 103 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 104 | * Constructor. |
Jonathan Austin |
1:8aa5cdb4ab67 | 105 | * Create a blank bitmap representation of a given size. |
Jonathan Austin |
1:8aa5cdb4ab67 | 106 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 107 | * @param s A text based representation of the image given whitespace delimited numeric values. |
Jonathan Austin |
1:8aa5cdb4ab67 | 108 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 109 | * @code |
Jonathan Austin |
1:8aa5cdb4ab67 | 110 | * MicroBitImage i("0,1,0,1,0\n1,0,1,0,1\n0,1,0,1,0\n1,0,1,0,1\n0,1,0,1,0\n"); // 5x5 image |
Jonathan Austin |
1:8aa5cdb4ab67 | 111 | * @endcode |
Jonathan Austin |
1:8aa5cdb4ab67 | 112 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 113 | MicroBitImage::MicroBitImage(const char *s) |
Jonathan Austin |
1:8aa5cdb4ab67 | 114 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 115 | int width = 0; |
Jonathan Austin |
1:8aa5cdb4ab67 | 116 | int height = 0; |
Jonathan Austin |
1:8aa5cdb4ab67 | 117 | int count = 0; |
Jonathan Austin |
1:8aa5cdb4ab67 | 118 | int digit = 0; |
Jonathan Austin |
1:8aa5cdb4ab67 | 119 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 120 | char parseBuf[10]; |
Jonathan Austin |
1:8aa5cdb4ab67 | 121 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 122 | const char *parseReadPtr; |
Jonathan Austin |
1:8aa5cdb4ab67 | 123 | char *parseWritePtr; |
Jonathan Austin |
1:8aa5cdb4ab67 | 124 | uint8_t *bitmapPtr; |
Jonathan Austin |
1:8aa5cdb4ab67 | 125 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 126 | if (s == NULL) |
Jonathan Austin |
1:8aa5cdb4ab67 | 127 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 128 | init_empty(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 129 | return; |
Jonathan Austin |
1:8aa5cdb4ab67 | 130 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 131 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 132 | // First pass: Parse the string to determine the geometry of the image. |
Jonathan Austin |
1:8aa5cdb4ab67 | 133 | // We do this from first principles to avoid unecessary load of the strtok() libs etc. |
Jonathan Austin |
1:8aa5cdb4ab67 | 134 | parseReadPtr = s; |
Jonathan Austin |
1:8aa5cdb4ab67 | 135 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 136 | while (*parseReadPtr) |
Jonathan Austin |
1:8aa5cdb4ab67 | 137 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 138 | if (isdigit(*parseReadPtr)) |
Jonathan Austin |
1:8aa5cdb4ab67 | 139 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 140 | // Ignore numbers. |
Jonathan Austin |
1:8aa5cdb4ab67 | 141 | digit = 1; |
Jonathan Austin |
1:8aa5cdb4ab67 | 142 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 143 | else if (*parseReadPtr =='\n') |
Jonathan Austin |
1:8aa5cdb4ab67 | 144 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 145 | if (digit) |
Jonathan Austin |
1:8aa5cdb4ab67 | 146 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 147 | count++; |
Jonathan Austin |
1:8aa5cdb4ab67 | 148 | digit = 0; |
Jonathan Austin |
1:8aa5cdb4ab67 | 149 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 150 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 151 | height++; |
Jonathan Austin |
1:8aa5cdb4ab67 | 152 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 153 | width = count > width ? count : width; |
Jonathan Austin |
1:8aa5cdb4ab67 | 154 | count = 0; |
Jonathan Austin |
1:8aa5cdb4ab67 | 155 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 156 | else |
Jonathan Austin |
1:8aa5cdb4ab67 | 157 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 158 | if (digit) |
Jonathan Austin |
1:8aa5cdb4ab67 | 159 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 160 | count++; |
Jonathan Austin |
1:8aa5cdb4ab67 | 161 | digit = 0; |
Jonathan Austin |
1:8aa5cdb4ab67 | 162 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 163 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 164 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 165 | parseReadPtr++; |
Jonathan Austin |
1:8aa5cdb4ab67 | 166 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 167 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 168 | this->init(width, height, NULL); |
Jonathan Austin |
1:8aa5cdb4ab67 | 169 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 170 | // Second pass: collect the data. |
Jonathan Austin |
1:8aa5cdb4ab67 | 171 | parseReadPtr = s; |
Jonathan Austin |
1:8aa5cdb4ab67 | 172 | parseWritePtr = parseBuf; |
Jonathan Austin |
1:8aa5cdb4ab67 | 173 | bitmapPtr = this->getBitmap(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 174 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 175 | while (*parseReadPtr) |
Jonathan Austin |
1:8aa5cdb4ab67 | 176 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 177 | if (isdigit(*parseReadPtr)) |
Jonathan Austin |
1:8aa5cdb4ab67 | 178 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 179 | *parseWritePtr = *parseReadPtr; |
Jonathan Austin |
1:8aa5cdb4ab67 | 180 | parseWritePtr++; |
Jonathan Austin |
1:8aa5cdb4ab67 | 181 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 182 | else |
Jonathan Austin |
1:8aa5cdb4ab67 | 183 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 184 | *parseWritePtr = 0; |
Jonathan Austin |
1:8aa5cdb4ab67 | 185 | if (parseWritePtr > parseBuf) |
Jonathan Austin |
1:8aa5cdb4ab67 | 186 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 187 | *bitmapPtr = atoi(parseBuf); |
Jonathan Austin |
1:8aa5cdb4ab67 | 188 | bitmapPtr++; |
Jonathan Austin |
1:8aa5cdb4ab67 | 189 | parseWritePtr = parseBuf; |
Jonathan Austin |
1:8aa5cdb4ab67 | 190 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 191 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 192 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 193 | parseReadPtr++; |
Jonathan Austin |
1:8aa5cdb4ab67 | 194 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 195 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 196 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 197 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 198 | * Constructor. |
Jonathan Austin |
1:8aa5cdb4ab67 | 199 | * Create an image from a specially prepared constant array, with no copying. Will call ptr->incr(). |
Jonathan Austin |
1:8aa5cdb4ab67 | 200 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 201 | * @param ptr The literal - first two bytes should be 0xff, then width, 0, height, 0, and the bitmap. Width and height are 16 bit. The literal has to be 4-byte aligned. |
Jonathan Austin |
1:8aa5cdb4ab67 | 202 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 203 | * @code |
Jonathan Austin |
1:8aa5cdb4ab67 | 204 | * static const uint8_t heart[] __attribute__ ((aligned (4))) = { 0xff, 0xff, 10, 0, 5, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, }; // a cute heart |
Jonathan Austin |
1:8aa5cdb4ab67 | 205 | * MicroBitImage i((ImageData*)(void*)heart); |
Jonathan Austin |
1:8aa5cdb4ab67 | 206 | * @endcode |
Jonathan Austin |
1:8aa5cdb4ab67 | 207 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 208 | MicroBitImage::MicroBitImage(ImageData *p) |
Jonathan Austin |
1:8aa5cdb4ab67 | 209 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 210 | ptr = p; |
Jonathan Austin |
1:8aa5cdb4ab67 | 211 | ptr->incr(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 212 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 213 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 214 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 215 | * Get current ptr, do not decr() it, and set the current instance to empty image. |
Jonathan Austin |
1:8aa5cdb4ab67 | 216 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 217 | * This is to be used by specialized runtimes which pass ImageData around. |
Jonathan Austin |
1:8aa5cdb4ab67 | 218 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 219 | ImageData *MicroBitImage::leakData() |
Jonathan Austin |
1:8aa5cdb4ab67 | 220 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 221 | ImageData* res = ptr; |
Jonathan Austin |
1:8aa5cdb4ab67 | 222 | init_empty(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 223 | return res; |
Jonathan Austin |
1:8aa5cdb4ab67 | 224 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 225 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 226 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 227 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 228 | * Constructor. |
Jonathan Austin |
1:8aa5cdb4ab67 | 229 | * Create a bitmap representation of a given size, based on a given buffer. |
Jonathan Austin |
1:8aa5cdb4ab67 | 230 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 231 | * @param x the width of the image. |
Jonathan Austin |
1:8aa5cdb4ab67 | 232 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 233 | * @param y the height of the image. |
Jonathan Austin |
1:8aa5cdb4ab67 | 234 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 235 | * @param bitmap a 2D array representing the image. |
Jonathan Austin |
1:8aa5cdb4ab67 | 236 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 237 | * @code |
Jonathan Austin |
1:8aa5cdb4ab67 | 238 | * const uint8_t heart[] = { 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, }; // a cute heart |
Jonathan Austin |
1:8aa5cdb4ab67 | 239 | * MicroBitImage i(10,5,heart); |
Jonathan Austin |
1:8aa5cdb4ab67 | 240 | * @endcode |
Jonathan Austin |
1:8aa5cdb4ab67 | 241 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 242 | MicroBitImage::MicroBitImage(const int16_t x, const int16_t y, const uint8_t *bitmap) |
Jonathan Austin |
1:8aa5cdb4ab67 | 243 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 244 | this->init(x,y,bitmap); |
Jonathan Austin |
1:8aa5cdb4ab67 | 245 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 246 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 247 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 248 | * Destructor. |
Jonathan Austin |
1:8aa5cdb4ab67 | 249 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 250 | * Removes buffer resources held by the instance. |
Jonathan Austin |
1:8aa5cdb4ab67 | 251 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 252 | MicroBitImage::~MicroBitImage() |
Jonathan Austin |
1:8aa5cdb4ab67 | 253 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 254 | ptr->decr(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 255 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 256 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 257 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 258 | * Internal constructor which defaults to the EmptyImage instance variable |
Jonathan Austin |
1:8aa5cdb4ab67 | 259 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 260 | void MicroBitImage::init_empty() |
Jonathan Austin |
1:8aa5cdb4ab67 | 261 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 262 | ptr = (ImageData*)(void*)empty; |
Jonathan Austin |
1:8aa5cdb4ab67 | 263 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 264 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 265 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 266 | * Internal constructor which provides sanity checking and initialises class properties. |
Jonathan Austin |
1:8aa5cdb4ab67 | 267 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 268 | * @param x the width of the image |
Jonathan Austin |
1:8aa5cdb4ab67 | 269 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 270 | * @param y the height of the image |
Jonathan Austin |
1:8aa5cdb4ab67 | 271 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 272 | * @param bitmap an array of integers that make up an image. |
Jonathan Austin |
1:8aa5cdb4ab67 | 273 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 274 | void MicroBitImage::init(const int16_t x, const int16_t y, const uint8_t *bitmap) |
Jonathan Austin |
1:8aa5cdb4ab67 | 275 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 276 | //sanity check size of image - you cannot have a negative sizes |
Jonathan Austin |
1:8aa5cdb4ab67 | 277 | if(x < 0 || y < 0) |
Jonathan Austin |
1:8aa5cdb4ab67 | 278 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 279 | init_empty(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 280 | return; |
Jonathan Austin |
1:8aa5cdb4ab67 | 281 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 282 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 283 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 284 | // Create a copy of the array |
Jonathan Austin |
1:8aa5cdb4ab67 | 285 | ptr = (ImageData*)malloc(sizeof(ImageData) + x * y); |
Jonathan Austin |
1:8aa5cdb4ab67 | 286 | ptr->init(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 287 | ptr->width = x; |
Jonathan Austin |
1:8aa5cdb4ab67 | 288 | ptr->height = y; |
Jonathan Austin |
1:8aa5cdb4ab67 | 289 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 290 | // create a linear buffer to represent the image. We could use a jagged/2D array here, but experimentation |
Jonathan Austin |
1:8aa5cdb4ab67 | 291 | // showed this had a negative effect on memory management (heap fragmentation etc). |
Jonathan Austin |
1:8aa5cdb4ab67 | 292 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 293 | if (bitmap) |
Jonathan Austin |
1:8aa5cdb4ab67 | 294 | this->printImage(x,y,bitmap); |
Jonathan Austin |
1:8aa5cdb4ab67 | 295 | else |
Jonathan Austin |
1:8aa5cdb4ab67 | 296 | this->clear(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 297 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 298 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 299 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 300 | * Copy assign operation. |
Jonathan Austin |
1:8aa5cdb4ab67 | 301 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 302 | * Called when one MicroBitImage is assigned the value of another using the '=' operator. |
Jonathan Austin |
1:8aa5cdb4ab67 | 303 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 304 | * Decrement our reference count and free up the buffer as necessary. |
Jonathan Austin |
1:8aa5cdb4ab67 | 305 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 306 | * Then, update our buffer to refer to that of the supplied MicroBitImage, |
Jonathan Austin |
1:8aa5cdb4ab67 | 307 | * and increase its reference count. |
Jonathan Austin |
1:8aa5cdb4ab67 | 308 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 309 | * @param s The MicroBitImage to reference. |
Jonathan Austin |
1:8aa5cdb4ab67 | 310 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 311 | * @code |
Jonathan Austin |
1:8aa5cdb4ab67 | 312 | * const uint8_t heart[] = { 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, }; // a cute heart |
Jonathan Austin |
1:8aa5cdb4ab67 | 313 | * MicroBitImage i(10,5,heart); |
Jonathan Austin |
1:8aa5cdb4ab67 | 314 | * MicroBitImage i1(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 315 | * i1 = i; // i1 now references i |
Jonathan Austin |
1:8aa5cdb4ab67 | 316 | * @endcode |
Jonathan Austin |
1:8aa5cdb4ab67 | 317 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 318 | MicroBitImage& MicroBitImage::operator = (const MicroBitImage& i) |
Jonathan Austin |
1:8aa5cdb4ab67 | 319 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 320 | if(ptr == i.ptr) |
Jonathan Austin |
1:8aa5cdb4ab67 | 321 | return *this; |
Jonathan Austin |
1:8aa5cdb4ab67 | 322 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 323 | ptr->decr(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 324 | ptr = i.ptr; |
Jonathan Austin |
1:8aa5cdb4ab67 | 325 | ptr->incr(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 326 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 327 | return *this; |
Jonathan Austin |
1:8aa5cdb4ab67 | 328 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 329 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 330 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 331 | * Equality operation. |
Jonathan Austin |
1:8aa5cdb4ab67 | 332 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 333 | * Called when one MicroBitImage is tested to be equal to another using the '==' operator. |
Jonathan Austin |
1:8aa5cdb4ab67 | 334 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 335 | * @param i The MicroBitImage to test ourselves against. |
Jonathan Austin |
1:8aa5cdb4ab67 | 336 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 337 | * @return true if this MicroBitImage is identical to the one supplied, false otherwise. |
Jonathan Austin |
1:8aa5cdb4ab67 | 338 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 339 | * @code |
Jonathan Austin |
1:8aa5cdb4ab67 | 340 | * MicroBitDisplay display; |
Jonathan Austin |
1:8aa5cdb4ab67 | 341 | * MicroBitImage i(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 342 | * MicroBitImage i1(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 343 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 344 | * if(i == i1) //will be true |
Jonathan Austin |
1:8aa5cdb4ab67 | 345 | * display.scroll("true"); |
Jonathan Austin |
1:8aa5cdb4ab67 | 346 | * @endcode |
Jonathan Austin |
1:8aa5cdb4ab67 | 347 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 348 | bool MicroBitImage::operator== (const MicroBitImage& i) |
Jonathan Austin |
1:8aa5cdb4ab67 | 349 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 350 | if (ptr == i.ptr) |
Jonathan Austin |
1:8aa5cdb4ab67 | 351 | return true; |
Jonathan Austin |
1:8aa5cdb4ab67 | 352 | else |
Jonathan Austin |
1:8aa5cdb4ab67 | 353 | return (ptr->width == i.ptr->width && ptr->height == i.ptr->height && (memcmp(getBitmap(), i.ptr->data, getSize())==0)); |
Jonathan Austin |
1:8aa5cdb4ab67 | 354 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 355 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 356 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 357 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 358 | * Resets all pixels in this image to 0. |
Jonathan Austin |
1:8aa5cdb4ab67 | 359 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 360 | * @code |
Jonathan Austin |
1:8aa5cdb4ab67 | 361 | * MicroBitImage i("0,1,0,1,0\n1,0,1,0,1\n0,1,0,1,0\n1,0,1,0,1\n0,1,0,1,0\n"); // 5x5 image |
Jonathan Austin |
1:8aa5cdb4ab67 | 362 | * i.clear(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 363 | * @endcode |
Jonathan Austin |
1:8aa5cdb4ab67 | 364 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 365 | void MicroBitImage::clear() |
Jonathan Austin |
1:8aa5cdb4ab67 | 366 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 367 | memclr(getBitmap(), getSize()); |
Jonathan Austin |
1:8aa5cdb4ab67 | 368 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 369 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 370 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 371 | * Sets the pixel at the given co-ordinates to a given value. |
Jonathan Austin |
1:8aa5cdb4ab67 | 372 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 373 | * @param x The co-ordinate of the pixel to change. |
Jonathan Austin |
1:8aa5cdb4ab67 | 374 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 375 | * @param y The co-ordinate of the pixel to change. |
Jonathan Austin |
1:8aa5cdb4ab67 | 376 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 377 | * @param value The new value of the pixel (the brightness level 0-255) |
Jonathan Austin |
1:8aa5cdb4ab67 | 378 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 379 | * @return MICROBIT_OK, or MICROBIT_INVALID_PARAMETER. |
Jonathan Austin |
1:8aa5cdb4ab67 | 380 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 381 | * @code |
Jonathan Austin |
1:8aa5cdb4ab67 | 382 | * MicroBitImage i("0,1,0,1,0\n1,0,1,0,1\n0,1,0,1,0\n1,0,1,0,1\n0,1,0,1,0\n"); // 5x5 image |
Jonathan Austin |
1:8aa5cdb4ab67 | 383 | * i.setPixelValue(0,0,255); |
Jonathan Austin |
1:8aa5cdb4ab67 | 384 | * @endcode |
Jonathan Austin |
1:8aa5cdb4ab67 | 385 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 386 | * @note all coordinates originate from the top left of an image. |
Jonathan Austin |
1:8aa5cdb4ab67 | 387 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 388 | int MicroBitImage::setPixelValue(int16_t x , int16_t y, uint8_t value) |
Jonathan Austin |
1:8aa5cdb4ab67 | 389 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 390 | //sanity check |
Jonathan Austin |
1:8aa5cdb4ab67 | 391 | if(x >= getWidth() || y >= getHeight() || x < 0 || y < 0) |
Jonathan Austin |
1:8aa5cdb4ab67 | 392 | return MICROBIT_INVALID_PARAMETER; |
Jonathan Austin |
1:8aa5cdb4ab67 | 393 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 394 | this->getBitmap()[y*getWidth()+x] = value; |
Jonathan Austin |
1:8aa5cdb4ab67 | 395 | return MICROBIT_OK; |
Jonathan Austin |
1:8aa5cdb4ab67 | 396 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 397 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 398 | /** |
LancasterUniversity | 69:b62f231e51ce | 399 | * Retrieves the value of a given pixel. |
Jonathan Austin |
1:8aa5cdb4ab67 | 400 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 401 | * @param x The x co-ordinate of the pixel to read. Must be within the dimensions of the image. |
Jonathan Austin |
1:8aa5cdb4ab67 | 402 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 403 | * @param y The y co-ordinate of the pixel to read. Must be within the dimensions of the image. |
Jonathan Austin |
1:8aa5cdb4ab67 | 404 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 405 | * @return The value assigned to the given pixel location (the brightness level 0-255), or MICROBIT_INVALID_PARAMETER. |
Jonathan Austin |
1:8aa5cdb4ab67 | 406 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 407 | * @code |
Jonathan Austin |
1:8aa5cdb4ab67 | 408 | * MicroBitImage i("0,1,0,1,0\n1,0,1,0,1\n0,1,0,1,0\n1,0,1,0,1\n0,1,0,1,0\n"); // 5x5 image |
Jonathan Austin |
1:8aa5cdb4ab67 | 409 | * i.getPixelValue(0,0); //should be 0; |
Jonathan Austin |
1:8aa5cdb4ab67 | 410 | * @endcode |
Jonathan Austin |
1:8aa5cdb4ab67 | 411 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 412 | int MicroBitImage::getPixelValue(int16_t x , int16_t y) |
Jonathan Austin |
1:8aa5cdb4ab67 | 413 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 414 | //sanity check |
Jonathan Austin |
1:8aa5cdb4ab67 | 415 | if(x >= getWidth() || y >= getHeight() || x < 0 || y < 0) |
Jonathan Austin |
1:8aa5cdb4ab67 | 416 | return MICROBIT_INVALID_PARAMETER; |
Jonathan Austin |
1:8aa5cdb4ab67 | 417 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 418 | return this->getBitmap()[y*getWidth()+x]; |
Jonathan Austin |
1:8aa5cdb4ab67 | 419 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 420 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 421 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 422 | * Replaces the content of this image with that of a given 2D array representing |
Jonathan Austin |
1:8aa5cdb4ab67 | 423 | * the image. |
Jonathan Austin |
1:8aa5cdb4ab67 | 424 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 425 | * @param x the width of the image. Must be within the dimensions of the image. |
Jonathan Austin |
1:8aa5cdb4ab67 | 426 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 427 | * @param y the width of the image. Must be within the dimensions of the image. |
Jonathan Austin |
1:8aa5cdb4ab67 | 428 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 429 | * @param bitmap a 2D array representing the image. |
Jonathan Austin |
1:8aa5cdb4ab67 | 430 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 431 | * @return MICROBIT_OK on success, or MICROBIT_INVALID_PARAMETER. |
Jonathan Austin |
1:8aa5cdb4ab67 | 432 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 433 | * @code |
Jonathan Austin |
1:8aa5cdb4ab67 | 434 | * const uint8_t heart[] = { 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, }; // a cute heart |
Jonathan Austin |
1:8aa5cdb4ab67 | 435 | * MicroBitImage i(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 436 | * i.printImage(0,0,heart); |
Jonathan Austin |
1:8aa5cdb4ab67 | 437 | * @endcode |
Jonathan Austin |
1:8aa5cdb4ab67 | 438 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 439 | * @note all coordinates originate from the top left of an image. |
Jonathan Austin |
1:8aa5cdb4ab67 | 440 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 441 | int MicroBitImage::printImage(int16_t width, int16_t height, const uint8_t *bitmap) |
Jonathan Austin |
1:8aa5cdb4ab67 | 442 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 443 | const uint8_t *pIn; |
Jonathan Austin |
1:8aa5cdb4ab67 | 444 | uint8_t *pOut; |
Jonathan Austin |
1:8aa5cdb4ab67 | 445 | int pixelsToCopyX, pixelsToCopyY; |
Jonathan Austin |
1:8aa5cdb4ab67 | 446 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 447 | // Sanity check. |
Jonathan Austin |
1:8aa5cdb4ab67 | 448 | if (width <= 0 || width <= 0 || bitmap == NULL) |
Jonathan Austin |
1:8aa5cdb4ab67 | 449 | return MICROBIT_INVALID_PARAMETER; |
Jonathan Austin |
1:8aa5cdb4ab67 | 450 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 451 | // Calcualte sane start pointer. |
Jonathan Austin |
1:8aa5cdb4ab67 | 452 | pixelsToCopyX = min(width,this->getWidth()); |
Jonathan Austin |
1:8aa5cdb4ab67 | 453 | pixelsToCopyY = min(height,this->getHeight()); |
Jonathan Austin |
1:8aa5cdb4ab67 | 454 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 455 | pIn = bitmap; |
Jonathan Austin |
1:8aa5cdb4ab67 | 456 | pOut = this->getBitmap(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 457 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 458 | // Copy the image, stride by stride. |
Jonathan Austin |
1:8aa5cdb4ab67 | 459 | for (int i=0; i<pixelsToCopyY; i++) |
Jonathan Austin |
1:8aa5cdb4ab67 | 460 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 461 | memcpy(pOut, pIn, pixelsToCopyX); |
Jonathan Austin |
1:8aa5cdb4ab67 | 462 | pIn += width; |
Jonathan Austin |
1:8aa5cdb4ab67 | 463 | pOut += this->getWidth(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 464 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 465 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 466 | return MICROBIT_OK; |
Jonathan Austin |
1:8aa5cdb4ab67 | 467 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 468 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 469 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 470 | * Pastes a given bitmap at the given co-ordinates. |
Jonathan Austin |
1:8aa5cdb4ab67 | 471 | * |
LancasterUniversity | 69:b62f231e51ce | 472 | * Any pixels in the relevant area of this image are replaced. |
Jonathan Austin |
1:8aa5cdb4ab67 | 473 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 474 | * @param image The MicroBitImage to paste. |
Jonathan Austin |
1:8aa5cdb4ab67 | 475 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 476 | * @param x The leftmost X co-ordinate in this image where the given image should be pasted. Defaults to 0. |
Jonathan Austin |
1:8aa5cdb4ab67 | 477 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 478 | * @param y The uppermost Y co-ordinate in this image where the given image should be pasted. Defaults to 0. |
Jonathan Austin |
1:8aa5cdb4ab67 | 479 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 480 | * @param alpha set to 1 if transparency clear pixels in given image should be treated as transparent. Set to 0 otherwise. Defaults to 0. |
Jonathan Austin |
1:8aa5cdb4ab67 | 481 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 482 | * @return The number of pixels written. |
Jonathan Austin |
1:8aa5cdb4ab67 | 483 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 484 | * @code |
Jonathan Austin |
1:8aa5cdb4ab67 | 485 | * const uint8_t heart[] = { 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, }; // a cute heart |
Jonathan Austin |
1:8aa5cdb4ab67 | 486 | * MicroBitImage i(10,5,heart); // a big heart |
Jonathan Austin |
1:8aa5cdb4ab67 | 487 | * i.paste(i, -5, 0); // a small heart |
Jonathan Austin |
1:8aa5cdb4ab67 | 488 | * @endcode |
Jonathan Austin |
1:8aa5cdb4ab67 | 489 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 490 | int MicroBitImage::paste(const MicroBitImage &image, int16_t x, int16_t y, uint8_t alpha) |
Jonathan Austin |
1:8aa5cdb4ab67 | 491 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 492 | uint8_t *pIn, *pOut; |
Jonathan Austin |
1:8aa5cdb4ab67 | 493 | int cx, cy; |
Jonathan Austin |
1:8aa5cdb4ab67 | 494 | int pxWritten = 0; |
Jonathan Austin |
1:8aa5cdb4ab67 | 495 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 496 | // Sanity check. |
Jonathan Austin |
1:8aa5cdb4ab67 | 497 | // We permit writes that overlap us, but ones that are clearly out of scope we can filter early. |
Jonathan Austin |
1:8aa5cdb4ab67 | 498 | if (x >= getWidth() || y >= getHeight() || x+image.getWidth() <= 0 || y+image.getHeight() <= 0) |
Jonathan Austin |
1:8aa5cdb4ab67 | 499 | return 0; |
Jonathan Austin |
1:8aa5cdb4ab67 | 500 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 501 | //Calculate the number of byte we need to copy in each dimension. |
Jonathan Austin |
1:8aa5cdb4ab67 | 502 | cx = x < 0 ? min(image.getWidth() + x, getWidth()) : min(image.getWidth(), getWidth() - x); |
Jonathan Austin |
1:8aa5cdb4ab67 | 503 | cy = y < 0 ? min(image.getHeight() + y, getHeight()) : min(image.getHeight(), getHeight() - y); |
Jonathan Austin |
1:8aa5cdb4ab67 | 504 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 505 | // Calculate sane start pointer. |
Jonathan Austin |
1:8aa5cdb4ab67 | 506 | pIn = image.ptr->data; |
Jonathan Austin |
1:8aa5cdb4ab67 | 507 | pIn += (x < 0) ? -x : 0; |
Jonathan Austin |
1:8aa5cdb4ab67 | 508 | pIn += (y < 0) ? -image.getWidth()*y : 0; |
Jonathan Austin |
1:8aa5cdb4ab67 | 509 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 510 | pOut = getBitmap(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 511 | pOut += (x > 0) ? x : 0; |
Jonathan Austin |
1:8aa5cdb4ab67 | 512 | pOut += (y > 0) ? getWidth()*y : 0; |
Jonathan Austin |
1:8aa5cdb4ab67 | 513 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 514 | // Copy the image, stride by stride |
Jonathan Austin |
1:8aa5cdb4ab67 | 515 | // If we want primitive transparecy, we do this byte by byte. |
Jonathan Austin |
1:8aa5cdb4ab67 | 516 | // If we don't, use a more efficient block memory copy instead. Every little helps! |
Jonathan Austin |
1:8aa5cdb4ab67 | 517 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 518 | if (alpha) |
Jonathan Austin |
1:8aa5cdb4ab67 | 519 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 520 | for (int i=0; i<cy; i++) |
Jonathan Austin |
1:8aa5cdb4ab67 | 521 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 522 | for (int j=0; j<cx; j++) |
Jonathan Austin |
1:8aa5cdb4ab67 | 523 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 524 | // Copy this byte if appropriate. |
Jonathan Austin |
1:8aa5cdb4ab67 | 525 | if (*(pIn+j) != 0){ |
Jonathan Austin |
1:8aa5cdb4ab67 | 526 | *(pOut+j) = *(pIn+j); |
Jonathan Austin |
1:8aa5cdb4ab67 | 527 | pxWritten++; |
Jonathan Austin |
1:8aa5cdb4ab67 | 528 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 529 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 530 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 531 | pIn += image.getWidth(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 532 | pOut += getWidth(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 533 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 534 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 535 | else |
Jonathan Austin |
1:8aa5cdb4ab67 | 536 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 537 | for (int i=0; i<cy; i++) |
Jonathan Austin |
1:8aa5cdb4ab67 | 538 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 539 | memcpy(pOut, pIn, cx); |
Jonathan Austin |
1:8aa5cdb4ab67 | 540 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 541 | pxWritten += cx; |
Jonathan Austin |
1:8aa5cdb4ab67 | 542 | pIn += image.getWidth(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 543 | pOut += getWidth(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 544 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 545 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 546 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 547 | return pxWritten; |
Jonathan Austin |
1:8aa5cdb4ab67 | 548 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 549 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 550 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 551 | * Prints a character to the display at the given location |
Jonathan Austin |
1:8aa5cdb4ab67 | 552 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 553 | * @param c The character to display. |
Jonathan Austin |
1:8aa5cdb4ab67 | 554 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 555 | * @param x The x co-ordinate of on the image to place the top left of the character. Defaults to 0. |
Jonathan Austin |
1:8aa5cdb4ab67 | 556 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 557 | * @param y The y co-ordinate of on the image to place the top left of the character. Defaults to 0. |
Jonathan Austin |
1:8aa5cdb4ab67 | 558 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 559 | * @return MICROBIT_OK on success, or MICROBIT_INVALID_PARAMETER. |
Jonathan Austin |
1:8aa5cdb4ab67 | 560 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 561 | * @code |
Jonathan Austin |
1:8aa5cdb4ab67 | 562 | * MicroBitImage i(5,5); |
Jonathan Austin |
1:8aa5cdb4ab67 | 563 | * i.print('a'); |
Jonathan Austin |
1:8aa5cdb4ab67 | 564 | * @endcode |
Jonathan Austin |
1:8aa5cdb4ab67 | 565 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 566 | int MicroBitImage::print(char c, int16_t x, int16_t y) |
Jonathan Austin |
1:8aa5cdb4ab67 | 567 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 568 | unsigned char v; |
Jonathan Austin |
1:8aa5cdb4ab67 | 569 | int x1, y1; |
Jonathan Austin |
1:8aa5cdb4ab67 | 570 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 571 | MicroBitFont font = MicroBitFont::getSystemFont(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 572 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 573 | // Sanity check. Silently ignore anything out of bounds. |
Jonathan Austin |
1:8aa5cdb4ab67 | 574 | if (x >= getWidth() || y >= getHeight() || c < MICROBIT_FONT_ASCII_START || c > font.asciiEnd) |
Jonathan Austin |
1:8aa5cdb4ab67 | 575 | return MICROBIT_INVALID_PARAMETER; |
Jonathan Austin |
1:8aa5cdb4ab67 | 576 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 577 | // Paste. |
Jonathan Austin |
1:8aa5cdb4ab67 | 578 | int offset = (c-MICROBIT_FONT_ASCII_START) * 5; |
Jonathan Austin |
1:8aa5cdb4ab67 | 579 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 580 | for (int row=0; row<MICROBIT_FONT_HEIGHT; row++) |
Jonathan Austin |
1:8aa5cdb4ab67 | 581 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 582 | v = (char)*(font.characters + offset); |
Jonathan Austin |
1:8aa5cdb4ab67 | 583 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 584 | offset++; |
Jonathan Austin |
1:8aa5cdb4ab67 | 585 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 586 | // Update our Y co-ord write position |
Jonathan Austin |
1:8aa5cdb4ab67 | 587 | y1 = y+row; |
Jonathan Austin |
1:8aa5cdb4ab67 | 588 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 589 | for (int col = 0; col < MICROBIT_FONT_WIDTH; col++) |
Jonathan Austin |
1:8aa5cdb4ab67 | 590 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 591 | // Update our X co-ord write position |
Jonathan Austin |
1:8aa5cdb4ab67 | 592 | x1 = x+col; |
Jonathan Austin |
1:8aa5cdb4ab67 | 593 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 594 | if (x1 < getWidth() && y1 < getHeight()) |
Jonathan Austin |
1:8aa5cdb4ab67 | 595 | this->getBitmap()[y1*getWidth()+x1] = (v & (0x10 >> col)) ? 255 : 0; |
Jonathan Austin |
1:8aa5cdb4ab67 | 596 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 597 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 598 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 599 | return MICROBIT_OK; |
Jonathan Austin |
1:8aa5cdb4ab67 | 600 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 601 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 602 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 603 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 604 | * Shifts the pixels in this Image a given number of pixels to the left. |
Jonathan Austin |
1:8aa5cdb4ab67 | 605 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 606 | * @param n The number of pixels to shift. |
Jonathan Austin |
1:8aa5cdb4ab67 | 607 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 608 | * @return MICROBIT_OK on success, or MICROBIT_INVALID_PARAMETER. |
Jonathan Austin |
1:8aa5cdb4ab67 | 609 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 610 | * @code |
Jonathan Austin |
1:8aa5cdb4ab67 | 611 | * const uint8_t heart[] = { 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, }; // a cute heart |
Jonathan Austin |
1:8aa5cdb4ab67 | 612 | * MicroBitImage i(10,5,heart); // a big heart |
Jonathan Austin |
1:8aa5cdb4ab67 | 613 | * i.shiftLeft(5); // a small heart |
Jonathan Austin |
1:8aa5cdb4ab67 | 614 | * @endcode |
Jonathan Austin |
1:8aa5cdb4ab67 | 615 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 616 | int MicroBitImage::shiftLeft(int16_t n) |
Jonathan Austin |
1:8aa5cdb4ab67 | 617 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 618 | uint8_t *p = getBitmap(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 619 | int pixels = getWidth()-n; |
Jonathan Austin |
1:8aa5cdb4ab67 | 620 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 621 | if (n <= 0 ) |
Jonathan Austin |
1:8aa5cdb4ab67 | 622 | return MICROBIT_INVALID_PARAMETER; |
Jonathan Austin |
1:8aa5cdb4ab67 | 623 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 624 | if(n >= getWidth()) |
Jonathan Austin |
1:8aa5cdb4ab67 | 625 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 626 | clear(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 627 | return MICROBIT_OK; |
Jonathan Austin |
1:8aa5cdb4ab67 | 628 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 629 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 630 | for (int y = 0; y < getHeight(); y++) |
Jonathan Austin |
1:8aa5cdb4ab67 | 631 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 632 | // Copy, and blank fill the rightmost column. |
Jonathan Austin |
1:8aa5cdb4ab67 | 633 | memcpy(p, p+n, pixels); |
Jonathan Austin |
1:8aa5cdb4ab67 | 634 | memclr(p+pixels, n); |
Jonathan Austin |
1:8aa5cdb4ab67 | 635 | p += getWidth(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 636 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 637 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 638 | return MICROBIT_OK; |
Jonathan Austin |
1:8aa5cdb4ab67 | 639 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 640 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 641 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 642 | * Shifts the pixels in this Image a given number of pixels to the right. |
Jonathan Austin |
1:8aa5cdb4ab67 | 643 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 644 | * @param n The number of pixels to shift. |
Jonathan Austin |
1:8aa5cdb4ab67 | 645 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 646 | * @return MICROBIT_OK on success, or MICROBIT_INVALID_PARAMETER. |
Jonathan Austin |
1:8aa5cdb4ab67 | 647 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 648 | * @code |
Jonathan Austin |
1:8aa5cdb4ab67 | 649 | * const uint8_t heart[] = { 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, }; // a cute heart |
Jonathan Austin |
1:8aa5cdb4ab67 | 650 | * MicroBitImage i(10,5,heart); // a big heart |
Jonathan Austin |
1:8aa5cdb4ab67 | 651 | * i.shiftLeft(5); // a small heart |
Jonathan Austin |
1:8aa5cdb4ab67 | 652 | * i.shiftRight(5); // a big heart |
Jonathan Austin |
1:8aa5cdb4ab67 | 653 | * @endcode |
Jonathan Austin |
1:8aa5cdb4ab67 | 654 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 655 | int MicroBitImage::shiftRight(int16_t n) |
Jonathan Austin |
1:8aa5cdb4ab67 | 656 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 657 | uint8_t *p = getBitmap(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 658 | int pixels = getWidth()-n; |
Jonathan Austin |
1:8aa5cdb4ab67 | 659 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 660 | if (n <= 0) |
Jonathan Austin |
1:8aa5cdb4ab67 | 661 | return MICROBIT_INVALID_PARAMETER; |
Jonathan Austin |
1:8aa5cdb4ab67 | 662 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 663 | if(n >= getWidth()) |
Jonathan Austin |
1:8aa5cdb4ab67 | 664 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 665 | clear(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 666 | return MICROBIT_OK; |
Jonathan Austin |
1:8aa5cdb4ab67 | 667 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 668 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 669 | for (int y = 0; y < getHeight(); y++) |
Jonathan Austin |
1:8aa5cdb4ab67 | 670 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 671 | // Copy, and blank fill the leftmost column. |
Jonathan Austin |
1:8aa5cdb4ab67 | 672 | memmove(p+n, p, pixels); |
Jonathan Austin |
1:8aa5cdb4ab67 | 673 | memclr(p, n); |
Jonathan Austin |
1:8aa5cdb4ab67 | 674 | p += getWidth(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 675 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 676 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 677 | return MICROBIT_OK; |
Jonathan Austin |
1:8aa5cdb4ab67 | 678 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 679 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 680 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 681 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 682 | * Shifts the pixels in this Image a given number of pixels to upward. |
Jonathan Austin |
1:8aa5cdb4ab67 | 683 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 684 | * @param n The number of pixels to shift. |
Jonathan Austin |
1:8aa5cdb4ab67 | 685 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 686 | * @return MICROBIT_OK on success, or MICROBIT_INVALID_PARAMETER. |
Jonathan Austin |
1:8aa5cdb4ab67 | 687 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 688 | * @code |
Jonathan Austin |
1:8aa5cdb4ab67 | 689 | * const uint8_t heart[] = { 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, }; // a cute heart |
Jonathan Austin |
1:8aa5cdb4ab67 | 690 | * MicroBitImage i(10,5,heart); |
Jonathan Austin |
1:8aa5cdb4ab67 | 691 | * i.shiftUp(1); |
Jonathan Austin |
1:8aa5cdb4ab67 | 692 | * @endcode |
Jonathan Austin |
1:8aa5cdb4ab67 | 693 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 694 | int MicroBitImage::shiftUp(int16_t n) |
Jonathan Austin |
1:8aa5cdb4ab67 | 695 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 696 | uint8_t *pOut, *pIn; |
Jonathan Austin |
1:8aa5cdb4ab67 | 697 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 698 | if (n <= 0 ) |
Jonathan Austin |
1:8aa5cdb4ab67 | 699 | return MICROBIT_INVALID_PARAMETER; |
Jonathan Austin |
1:8aa5cdb4ab67 | 700 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 701 | if(n >= getHeight()) |
Jonathan Austin |
1:8aa5cdb4ab67 | 702 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 703 | clear(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 704 | return MICROBIT_OK; |
Jonathan Austin |
1:8aa5cdb4ab67 | 705 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 706 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 707 | pOut = getBitmap(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 708 | pIn = getBitmap()+getWidth()*n; |
Jonathan Austin |
1:8aa5cdb4ab67 | 709 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 710 | for (int y = 0; y < getHeight(); y++) |
Jonathan Austin |
1:8aa5cdb4ab67 | 711 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 712 | // Copy, and blank fill the leftmost column. |
Jonathan Austin |
1:8aa5cdb4ab67 | 713 | if (y < getHeight()-n) |
Jonathan Austin |
1:8aa5cdb4ab67 | 714 | memcpy(pOut, pIn, getWidth()); |
Jonathan Austin |
1:8aa5cdb4ab67 | 715 | else |
Jonathan Austin |
1:8aa5cdb4ab67 | 716 | memclr(pOut, getWidth()); |
Jonathan Austin |
1:8aa5cdb4ab67 | 717 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 718 | pIn += getWidth(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 719 | pOut += getWidth(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 720 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 721 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 722 | return MICROBIT_OK; |
Jonathan Austin |
1:8aa5cdb4ab67 | 723 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 724 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 725 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 726 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 727 | * Shifts the pixels in this Image a given number of pixels to downward. |
Jonathan Austin |
1:8aa5cdb4ab67 | 728 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 729 | * @param n The number of pixels to shift. |
Jonathan Austin |
1:8aa5cdb4ab67 | 730 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 731 | * @return MICROBIT_OK on success, or MICROBIT_INVALID_PARAMETER. |
Jonathan Austin |
1:8aa5cdb4ab67 | 732 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 733 | * @code |
Jonathan Austin |
1:8aa5cdb4ab67 | 734 | * const uint8_t heart[] = { 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, }; // a cute heart |
Jonathan Austin |
1:8aa5cdb4ab67 | 735 | * MicroBitImage i(10,5,heart); |
Jonathan Austin |
1:8aa5cdb4ab67 | 736 | * i.shiftDown(1); |
Jonathan Austin |
1:8aa5cdb4ab67 | 737 | * @endcode |
Jonathan Austin |
1:8aa5cdb4ab67 | 738 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 739 | int MicroBitImage::shiftDown(int16_t n) |
Jonathan Austin |
1:8aa5cdb4ab67 | 740 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 741 | uint8_t *pOut, *pIn; |
Jonathan Austin |
1:8aa5cdb4ab67 | 742 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 743 | if (n <= 0 ) |
Jonathan Austin |
1:8aa5cdb4ab67 | 744 | return MICROBIT_INVALID_PARAMETER; |
Jonathan Austin |
1:8aa5cdb4ab67 | 745 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 746 | if(n >= getHeight()) |
Jonathan Austin |
1:8aa5cdb4ab67 | 747 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 748 | clear(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 749 | return MICROBIT_OK; |
Jonathan Austin |
1:8aa5cdb4ab67 | 750 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 751 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 752 | pOut = getBitmap() + getWidth()*(getHeight()-1); |
Jonathan Austin |
1:8aa5cdb4ab67 | 753 | pIn = pOut - getWidth()*n; |
Jonathan Austin |
1:8aa5cdb4ab67 | 754 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 755 | for (int y = 0; y < getHeight(); y++) |
Jonathan Austin |
1:8aa5cdb4ab67 | 756 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 757 | // Copy, and blank fill the leftmost column. |
Jonathan Austin |
1:8aa5cdb4ab67 | 758 | if (y < getHeight()-n) |
Jonathan Austin |
1:8aa5cdb4ab67 | 759 | memcpy(pOut, pIn, getWidth()); |
Jonathan Austin |
1:8aa5cdb4ab67 | 760 | else |
Jonathan Austin |
1:8aa5cdb4ab67 | 761 | memclr(pOut, getWidth()); |
Jonathan Austin |
1:8aa5cdb4ab67 | 762 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 763 | pIn -= getWidth(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 764 | pOut -= getWidth(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 765 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 766 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 767 | return MICROBIT_OK; |
Jonathan Austin |
1:8aa5cdb4ab67 | 768 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 769 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 770 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 771 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 772 | * Converts the bitmap to a csv ManagedString. |
Jonathan Austin |
1:8aa5cdb4ab67 | 773 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 774 | * @code |
Jonathan Austin |
1:8aa5cdb4ab67 | 775 | * const uint8_t heart[] = { 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, }; // a cute heart |
Jonathan Austin |
1:8aa5cdb4ab67 | 776 | * MicroBitImage i(10,5,heart); |
Jonathan Austin |
1:8aa5cdb4ab67 | 777 | * uBit.serial.printString(i.toString()); // "0,1,0,1,0,0,0,0,0,0\n..." |
Jonathan Austin |
1:8aa5cdb4ab67 | 778 | * @endcode |
Jonathan Austin |
1:8aa5cdb4ab67 | 779 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 780 | ManagedString MicroBitImage::toString() |
Jonathan Austin |
1:8aa5cdb4ab67 | 781 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 782 | //width including commans and \n * height |
Jonathan Austin |
1:8aa5cdb4ab67 | 783 | int stringSize = getSize() * 2; |
Jonathan Austin |
1:8aa5cdb4ab67 | 784 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 785 | //plus one for string terminator |
Jonathan Austin |
1:8aa5cdb4ab67 | 786 | char parseBuffer[stringSize + 1]; |
Jonathan Austin |
1:8aa5cdb4ab67 | 787 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 788 | parseBuffer[stringSize] = '\0'; |
Jonathan Austin |
1:8aa5cdb4ab67 | 789 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 790 | uint8_t *bitmapPtr = getBitmap(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 791 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 792 | int parseIndex = 0; |
Jonathan Austin |
1:8aa5cdb4ab67 | 793 | int widthCount = 0; |
Jonathan Austin |
1:8aa5cdb4ab67 | 794 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 795 | while (parseIndex < stringSize) |
Jonathan Austin |
1:8aa5cdb4ab67 | 796 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 797 | if(*bitmapPtr) |
Jonathan Austin |
1:8aa5cdb4ab67 | 798 | parseBuffer[parseIndex] = '1'; |
Jonathan Austin |
1:8aa5cdb4ab67 | 799 | else |
Jonathan Austin |
1:8aa5cdb4ab67 | 800 | parseBuffer[parseIndex] = '0'; |
Jonathan Austin |
1:8aa5cdb4ab67 | 801 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 802 | parseIndex++; |
Jonathan Austin |
1:8aa5cdb4ab67 | 803 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 804 | if(widthCount == getWidth()-1) |
Jonathan Austin |
1:8aa5cdb4ab67 | 805 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 806 | parseBuffer[parseIndex] = '\n'; |
Jonathan Austin |
1:8aa5cdb4ab67 | 807 | widthCount = 0; |
Jonathan Austin |
1:8aa5cdb4ab67 | 808 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 809 | else |
Jonathan Austin |
1:8aa5cdb4ab67 | 810 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 811 | parseBuffer[parseIndex] = ','; |
Jonathan Austin |
1:8aa5cdb4ab67 | 812 | widthCount++; |
Jonathan Austin |
1:8aa5cdb4ab67 | 813 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 814 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 815 | parseIndex++; |
Jonathan Austin |
1:8aa5cdb4ab67 | 816 | bitmapPtr++; |
Jonathan Austin |
1:8aa5cdb4ab67 | 817 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 818 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 819 | return ManagedString(parseBuffer); |
Jonathan Austin |
1:8aa5cdb4ab67 | 820 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 821 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 822 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 823 | * Crops the image to the given dimensions. |
Jonathan Austin |
1:8aa5cdb4ab67 | 824 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 825 | * @param startx the location to start the crop in the x-axis |
Jonathan Austin |
1:8aa5cdb4ab67 | 826 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 827 | * @param starty the location to start the crop in the y-axis |
Jonathan Austin |
1:8aa5cdb4ab67 | 828 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 829 | * @param width the width of the desired cropped region |
Jonathan Austin |
1:8aa5cdb4ab67 | 830 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 831 | * @param height the height of the desired cropped region |
Jonathan Austin |
1:8aa5cdb4ab67 | 832 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 833 | * @code |
Jonathan Austin |
1:8aa5cdb4ab67 | 834 | * const uint8_t heart[] = { 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, }; // a cute heart |
Jonathan Austin |
1:8aa5cdb4ab67 | 835 | * MicroBitImage i(10,5,heart); |
Jonathan Austin |
1:8aa5cdb4ab67 | 836 | * i.crop(0,0,2,2).toString() // "0,1\n1,1\n" |
Jonathan Austin |
1:8aa5cdb4ab67 | 837 | * @endcode |
Jonathan Austin |
1:8aa5cdb4ab67 | 838 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 839 | MicroBitImage MicroBitImage::crop(int startx, int starty, int cropWidth, int cropHeight) |
Jonathan Austin |
1:8aa5cdb4ab67 | 840 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 841 | int newWidth = startx + cropWidth; |
Jonathan Austin |
1:8aa5cdb4ab67 | 842 | int newHeight = starty + cropHeight; |
Jonathan Austin |
1:8aa5cdb4ab67 | 843 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 844 | if (newWidth >= getWidth() || newWidth <=0) |
Jonathan Austin |
1:8aa5cdb4ab67 | 845 | newWidth = getWidth(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 846 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 847 | if (newHeight >= getHeight() || newHeight <= 0) |
Jonathan Austin |
1:8aa5cdb4ab67 | 848 | newHeight = getHeight(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 849 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 850 | //allocate our storage. |
Jonathan Austin |
1:8aa5cdb4ab67 | 851 | uint8_t cropped[newWidth * newHeight]; |
Jonathan Austin |
1:8aa5cdb4ab67 | 852 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 853 | //calculate the pointer to where we want to begin cropping |
Jonathan Austin |
1:8aa5cdb4ab67 | 854 | uint8_t *copyPointer = getBitmap() + (getWidth() * starty) + startx; |
Jonathan Austin |
1:8aa5cdb4ab67 | 855 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 856 | //get a reference to our storage |
Jonathan Austin |
1:8aa5cdb4ab67 | 857 | uint8_t *pastePointer = cropped; |
Jonathan Austin |
1:8aa5cdb4ab67 | 858 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 859 | //go through row by row and select our image. |
Jonathan Austin |
1:8aa5cdb4ab67 | 860 | for (int i = starty; i < newHeight; i++) |
Jonathan Austin |
1:8aa5cdb4ab67 | 861 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 862 | memcpy(pastePointer, copyPointer, newWidth); |
Jonathan Austin |
1:8aa5cdb4ab67 | 863 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 864 | copyPointer += getWidth(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 865 | pastePointer += newHeight; |
Jonathan Austin |
1:8aa5cdb4ab67 | 866 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 867 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 868 | return MicroBitImage(newWidth, newHeight, cropped); |
Jonathan Austin |
1:8aa5cdb4ab67 | 869 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 870 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 871 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 872 | * Check if image is read-only (i.e., residing in flash). |
Jonathan Austin |
1:8aa5cdb4ab67 | 873 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 874 | bool MicroBitImage::isReadOnly() |
Jonathan Austin |
1:8aa5cdb4ab67 | 875 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 876 | return ptr->isReadOnly(); |
Jonathan Austin |
1:8aa5cdb4ab67 | 877 | } |
Jonathan Austin |
1:8aa5cdb4ab67 | 878 | |
Jonathan Austin |
1:8aa5cdb4ab67 | 879 | /** |
Jonathan Austin |
1:8aa5cdb4ab67 | 880 | * Create a copy of the image bitmap. Used particularly, when isReadOnly() is true. |
Jonathan Austin |
1:8aa5cdb4ab67 | 881 | * |
Jonathan Austin |
1:8aa5cdb4ab67 | 882 | * @return an instance of MicroBitImage which can be modified independently of the current instance |
Jonathan Austin |
1:8aa5cdb4ab67 | 883 | */ |
Jonathan Austin |
1:8aa5cdb4ab67 | 884 | MicroBitImage MicroBitImage::clone() |
Jonathan Austin |
1:8aa5cdb4ab67 | 885 | { |
Jonathan Austin |
1:8aa5cdb4ab67 | 886 | return MicroBitImage(getWidth(), getHeight(), getBitmap()); |
LancasterUniversity | 69:b62f231e51ce | 887 | } |