Tami Farber / microbit-dal

Revised to disable BLE for radio communication as needed.

Dependencies:   BLE_API nRF51822 mbed-dev-bin

Dependents:   microbit

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?

UserRevisionLine numberNew 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 }