EmbeddedArtists AB / Mbed 2 deprecated lpc4088_ebb_gui_mandelbrot

Graphical demo for the LPC4088 Experiment Base Board with one of the Display Expansion Kits. This program displays a Mandelbrot calculation in a circular zoomed-in sequence.

Dependencies:   EALib mbed

Graphics.cpp@0:e24e3d741c52, 2014-10-03 (annotated)

Committer:
embeddedartists
Date:
Fri Oct 03 13:21:52 2014 +0000
Revision:
0:e24e3d741c52
First version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
embeddedartists 0:e24e3d741c52 1
embeddedartists 0:e24e3d741c52 2 #include "mbed.h"
embeddedartists 0:e24e3d741c52 3 #include "Graphics.h"
embeddedartists 0:e24e3d741c52 4
embeddedartists 0:e24e3d741c52 5
embeddedartists 0:e24e3d741c52 6 Graphics::Graphics(uint16_t *pFrmBuf, uint16_t dispWidth, uint16_t dispHeight)
embeddedartists 0:e24e3d741c52 7 {
embeddedartists 0:e24e3d741c52 8 this->windowX = dispWidth;
embeddedartists 0:e24e3d741c52 9 this->windowY = dispHeight;
embeddedartists 0:e24e3d741c52 10 this->pFrmBuf = pFrmBuf;
embeddedartists 0:e24e3d741c52 11 }
embeddedartists 0:e24e3d741c52 12
embeddedartists 0:e24e3d741c52 13 void Graphics::setFrameBuffer( uint16_t *pFrmBuf )
embeddedartists 0:e24e3d741c52 14 {
embeddedartists 0:e24e3d741c52 15 this->pFrmBuf = pFrmBuf;
embeddedartists 0:e24e3d741c52 16 }
embeddedartists 0:e24e3d741c52 17
embeddedartists 0:e24e3d741c52 18 int32_t Graphics::abs(int32_t v1) const
embeddedartists 0:e24e3d741c52 19 {
embeddedartists 0:e24e3d741c52 20 if (v1 > 0)
embeddedartists 0:e24e3d741c52 21 return v1;
embeddedartists 0:e24e3d741c52 22
embeddedartists 0:e24e3d741c52 23 return -v1;
embeddedartists 0:e24e3d741c52 24 }
embeddedartists 0:e24e3d741c52 25
embeddedartists 0:e24e3d741c52 26 /***********************************************************************
embeddedartists 0:e24e3d741c52 27 *
embeddedartists 0:e24e3d741c52 28 * Function: swim_put_line_raw
embeddedartists 0:e24e3d741c52 29 *
embeddedartists 0:e24e3d741c52 30 * Purpose: Draw a line on the physical display
embeddedartists 0:e24e3d741c52 31 *
embeddedartists 0:e24e3d741c52 32 * Processing:
embeddedartists 0:e24e3d741c52 33 * See function.
embeddedartists 0:e24e3d741c52 34 *
embeddedartists 0:e24e3d741c52 35 * Parameters:
embeddedartists 0:e24e3d741c52 36 * win : Window identifier
embeddedartists 0:e24e3d741c52 37 * x1 : Physical X position of X line start
embeddedartists 0:e24e3d741c52 38 * y1 : Physical Y position of Y line start
embeddedartists 0:e24e3d741c52 39 * x2 : Physical X position of X line end
embeddedartists 0:e24e3d741c52 40 * y2 : Physical Y position of Y line end
embeddedartists 0:e24e3d741c52 41 *
embeddedartists 0:e24e3d741c52 42 * Outputs: None
embeddedartists 0:e24e3d741c52 43 *
embeddedartists 0:e24e3d741c52 44 * Returns: Nothing
embeddedartists 0:e24e3d741c52 45 *
embeddedartists 0:e24e3d741c52 46 * Notes: None
embeddedartists 0:e24e3d741c52 47 *
embeddedartists 0:e24e3d741c52 48 **********************************************************************/
embeddedartists 0:e24e3d741c52 49 void Graphics::put_line(int32_t x1, int32_t y1, int32_t x2, int32_t y2, int16_t color)
embeddedartists 0:e24e3d741c52 50 {
embeddedartists 0:e24e3d741c52 51 int32_t e2, sx, sy, dx, dy, err;
embeddedartists 0:e24e3d741c52 52
embeddedartists 0:e24e3d741c52 53 /* calculate delta_x and delta_y */
embeddedartists 0:e24e3d741c52 54 dx = abs(x2 - x1);
embeddedartists 0:e24e3d741c52 55 dy = abs(y2 - y1);
embeddedartists 0:e24e3d741c52 56
embeddedartists 0:e24e3d741c52 57 /* set the direction for the step for both x and y, and
embeddedartists 0:e24e3d741c52 58 initialize the error */
embeddedartists 0:e24e3d741c52 59 if (x1 < x2)
embeddedartists 0:e24e3d741c52 60 sx = 1;
embeddedartists 0:e24e3d741c52 61 else
embeddedartists 0:e24e3d741c52 62 sx = -1;
embeddedartists 0:e24e3d741c52 63
embeddedartists 0:e24e3d741c52 64 if (y1 < y2)
embeddedartists 0:e24e3d741c52 65 sy = 1;
embeddedartists 0:e24e3d741c52 66 else
embeddedartists 0:e24e3d741c52 67 sy = -1;
embeddedartists 0:e24e3d741c52 68
embeddedartists 0:e24e3d741c52 69 err = dx - dy;
embeddedartists 0:e24e3d741c52 70
embeddedartists 0:e24e3d741c52 71 while (1)
embeddedartists 0:e24e3d741c52 72 {
embeddedartists 0:e24e3d741c52 73 if ((x1 >= 0) && (x1 < this->windowX) &&
embeddedartists 0:e24e3d741c52 74 (y1 >= 0) && (y1 < this->windowY))
embeddedartists 0:e24e3d741c52 75 this->pFrmBuf[x1 + (this->windowX*y1)] = color;
embeddedartists 0:e24e3d741c52 76
embeddedartists 0:e24e3d741c52 77 if ((x1 == x2) && (y1 == y2))
embeddedartists 0:e24e3d741c52 78 return;
embeddedartists 0:e24e3d741c52 79
embeddedartists 0:e24e3d741c52 80 e2 = 2 * err;
embeddedartists 0:e24e3d741c52 81 if (e2 > -dy)
embeddedartists 0:e24e3d741c52 82 {
embeddedartists 0:e24e3d741c52 83 err -= dy;
embeddedartists 0:e24e3d741c52 84 x1 += sx;
embeddedartists 0:e24e3d741c52 85 }
embeddedartists 0:e24e3d741c52 86 if (e2 < dx)
embeddedartists 0:e24e3d741c52 87 {
embeddedartists 0:e24e3d741c52 88 err += dx;
embeddedartists 0:e24e3d741c52 89 y1 += sy;
embeddedartists 0:e24e3d741c52 90 }
embeddedartists 0:e24e3d741c52 91 }
embeddedartists 0:e24e3d741c52 92 }
embeddedartists 0:e24e3d741c52 93
embeddedartists 0:e24e3d741c52 94 /***********************************************************************
embeddedartists 0:e24e3d741c52 95 *
embeddedartists 0:e24e3d741c52 96 * Function: plot4points
embeddedartists 0:e24e3d741c52 97 *
embeddedartists 0:e24e3d741c52 98 * Purpose:
embeddedartists 0:e24e3d741c52 99 *
embeddedartists 0:e24e3d741c52 100 * Processing:
embeddedartists 0:e24e3d741c52 101 * See function.
embeddedartists 0:e24e3d741c52 102 *
embeddedartists 0:e24e3d741c52 103 * Parameters:
embeddedartists 0:e24e3d741c52 104 * win : Window identifier
embeddedartists 0:e24e3d741c52 105 * cx :
embeddedartists 0:e24e3d741c52 106 * cy :
embeddedartists 0:e24e3d741c52 107 * x :
embeddedartists 0:e24e3d741c52 108 * y :
embeddedartists 0:e24e3d741c52 109 * Filled :
embeddedartists 0:e24e3d741c52 110 *
embeddedartists 0:e24e3d741c52 111 * Outputs: None
embeddedartists 0:e24e3d741c52 112 *
embeddedartists 0:e24e3d741c52 113 * Returns: Nothing
embeddedartists 0:e24e3d741c52 114 *
embeddedartists 0:e24e3d741c52 115 * Notes: None
embeddedartists 0:e24e3d741c52 116 *
embeddedartists 0:e24e3d741c52 117 **********************************************************************/
embeddedartists 0:e24e3d741c52 118 void Graphics::plot4points( int32_t cx, int32_t cy, int32_t x, int32_t y, int16_t color, int32_t Filled )
embeddedartists 0:e24e3d741c52 119 {
embeddedartists 0:e24e3d741c52 120 int16_t x0, x1, y0, y1;
embeddedartists 0:e24e3d741c52 121
embeddedartists 0:e24e3d741c52 122 y0 = cy + y;
embeddedartists 0:e24e3d741c52 123 y1 = cy - y;
embeddedartists 0:e24e3d741c52 124 if( Filled )
embeddedartists 0:e24e3d741c52 125 {
embeddedartists 0:e24e3d741c52 126 for( x0=cx - x; x0<=cx + x; x0++ )
embeddedartists 0:e24e3d741c52 127 {
embeddedartists 0:e24e3d741c52 128 if ((x0>=0) && (x0<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:e24e3d741c52 129 this->pFrmBuf[x0 + (this->windowX*y0)] = color;
embeddedartists 0:e24e3d741c52 130 if ((x0>=0) && (x0<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:e24e3d741c52 131 this->pFrmBuf[x0 + (this->windowX*y1)] = color;
embeddedartists 0:e24e3d741c52 132 }
embeddedartists 0:e24e3d741c52 133 }
embeddedartists 0:e24e3d741c52 134 else
embeddedartists 0:e24e3d741c52 135 {
embeddedartists 0:e24e3d741c52 136 x0 = cx + x;
embeddedartists 0:e24e3d741c52 137 x1 = cx - x;
embeddedartists 0:e24e3d741c52 138 if ((x0>=0) && (x0<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:e24e3d741c52 139 this->pFrmBuf[x0 + (this->windowX*y0)] = color;
embeddedartists 0:e24e3d741c52 140 if ((x != 0) &&
embeddedartists 0:e24e3d741c52 141 (x1>=0) && (x1<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:e24e3d741c52 142 this->pFrmBuf[x1 + (this->windowX*y0)] = color;
embeddedartists 0:e24e3d741c52 143 if ((y != 0) &&
embeddedartists 0:e24e3d741c52 144 (x0>=0) && (x0<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:e24e3d741c52 145 this->pFrmBuf[x0 + (this->windowX*y1)] = color;
embeddedartists 0:e24e3d741c52 146 if ((x != 0 && y != 0) &&
embeddedartists 0:e24e3d741c52 147 (x1>=0) && (x1<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:e24e3d741c52 148 this->pFrmBuf[x1 + (this->windowX*y1)] = color;
embeddedartists 0:e24e3d741c52 149 }
embeddedartists 0:e24e3d741c52 150 }
embeddedartists 0:e24e3d741c52 151
embeddedartists 0:e24e3d741c52 152 /***********************************************************************
embeddedartists 0:e24e3d741c52 153 *
embeddedartists 0:e24e3d741c52 154 * Function: plot8points
embeddedartists 0:e24e3d741c52 155 *
embeddedartists 0:e24e3d741c52 156 * Purpose:
embeddedartists 0:e24e3d741c52 157 *
embeddedartists 0:e24e3d741c52 158 * Processing:
embeddedartists 0:e24e3d741c52 159 * See function.
embeddedartists 0:e24e3d741c52 160 *
embeddedartists 0:e24e3d741c52 161 * Parameters:
embeddedartists 0:e24e3d741c52 162 * win : Window identifier
embeddedartists 0:e24e3d741c52 163 * cx :
embeddedartists 0:e24e3d741c52 164 * cy :
embeddedartists 0:e24e3d741c52 165 * x :
embeddedartists 0:e24e3d741c52 166 * y :
embeddedartists 0:e24e3d741c52 167 * Filled :
embeddedartists 0:e24e3d741c52 168 *
embeddedartists 0:e24e3d741c52 169 * Outputs: None
embeddedartists 0:e24e3d741c52 170 *
embeddedartists 0:e24e3d741c52 171 * Returns: Nothing
embeddedartists 0:e24e3d741c52 172 *
embeddedartists 0:e24e3d741c52 173 * Notes: None
embeddedartists 0:e24e3d741c52 174 *
embeddedartists 0:e24e3d741c52 175 **********************************************************************/
embeddedartists 0:e24e3d741c52 176 void Graphics::plot8points( int32_t cx, int32_t cy, int32_t x, int32_t y, int16_t color, int32_t Filled )
embeddedartists 0:e24e3d741c52 177 {
embeddedartists 0:e24e3d741c52 178 plot4points( cx, cy, x, y, color, Filled );
embeddedartists 0:e24e3d741c52 179 if (x != y)
embeddedartists 0:e24e3d741c52 180 plot4points( cx, cy, y, x, color, Filled );
embeddedartists 0:e24e3d741c52 181 }
embeddedartists 0:e24e3d741c52 182
embeddedartists 0:e24e3d741c52 183 /***********************************************************************
embeddedartists 0:e24e3d741c52 184 *
embeddedartists 0:e24e3d741c52 185 * Function: swim_put_circle
embeddedartists 0:e24e3d741c52 186 *
embeddedartists 0:e24e3d741c52 187 * Purpose:
embeddedartists 0:e24e3d741c52 188 *
embeddedartists 0:e24e3d741c52 189 * Processing:
embeddedartists 0:e24e3d741c52 190 * See function.
embeddedartists 0:e24e3d741c52 191 *
embeddedartists 0:e24e3d741c52 192 * Parameters:
embeddedartists 0:e24e3d741c52 193 * win : Window identifier
embeddedartists 0:e24e3d741c52 194 * cx :
embeddedartists 0:e24e3d741c52 195 * cy :
embeddedartists 0:e24e3d741c52 196 * radius :
embeddedartists 0:e24e3d741c52 197 * Filled :
embeddedartists 0:e24e3d741c52 198 *
embeddedartists 0:e24e3d741c52 199 * Outputs: None
embeddedartists 0:e24e3d741c52 200 *
embeddedartists 0:e24e3d741c52 201 * Returns: Nothing
embeddedartists 0:e24e3d741c52 202 *
embeddedartists 0:e24e3d741c52 203 * Notes: None
embeddedartists 0:e24e3d741c52 204 *
embeddedartists 0:e24e3d741c52 205 **********************************************************************/
embeddedartists 0:e24e3d741c52 206 void Graphics::put_circle( int32_t cx, int32_t cy, int16_t color, int32_t radius, int32_t Filled )
embeddedartists 0:e24e3d741c52 207 {
embeddedartists 0:e24e3d741c52 208 int32_t Error = -radius;
embeddedartists 0:e24e3d741c52 209 int16_t x = radius;
embeddedartists 0:e24e3d741c52 210 int16_t y = 0;
embeddedartists 0:e24e3d741c52 211
embeddedartists 0:e24e3d741c52 212 while( x >= y )
embeddedartists 0:e24e3d741c52 213 {
embeddedartists 0:e24e3d741c52 214 plot8points( cx, cy, x, y, color, Filled );
embeddedartists 0:e24e3d741c52 215
embeddedartists 0:e24e3d741c52 216 Error += y;
embeddedartists 0:e24e3d741c52 217 ++y;
embeddedartists 0:e24e3d741c52 218 Error += y;
embeddedartists 0:e24e3d741c52 219
embeddedartists 0:e24e3d741c52 220 if( Error >= 0 )
embeddedartists 0:e24e3d741c52 221 {
embeddedartists 0:e24e3d741c52 222 --x;
embeddedartists 0:e24e3d741c52 223 Error -= x;
embeddedartists 0:e24e3d741c52 224 Error -= x;
embeddedartists 0:e24e3d741c52 225 }
embeddedartists 0:e24e3d741c52 226 }
embeddedartists 0:e24e3d741c52 227 }
embeddedartists 0:e24e3d741c52 228
embeddedartists 0:e24e3d741c52 229 void Graphics::put_dot( int32_t cx, int32_t cy, int16_t color )
embeddedartists 0:e24e3d741c52 230 {
embeddedartists 0:e24e3d741c52 231 int size = 1;
embeddedartists 0:e24e3d741c52 232 for (int y1 = cy - size; y1 <= (cy + size); y1++) {
embeddedartists 0:e24e3d741c52 233 for (int x1 = cx - size; x1 <= (cx + size); x1++) {
embeddedartists 0:e24e3d741c52 234 if ((x1 >= 0) && (x1 < this->windowX) && (y1 >= 0) && (y1 < this->windowY)) {
embeddedartists 0:e24e3d741c52 235 this->pFrmBuf[x1 + (this->windowX*y1)] = color;
embeddedartists 0:e24e3d741c52 236 }
embeddedartists 0:e24e3d741c52 237 }
embeddedartists 0:e24e3d741c52 238 }
embeddedartists 0:e24e3d741c52 239 }
embeddedartists 0:e24e3d741c52 240
embeddedartists 0:e24e3d741c52 241