EmbeddedArtists AB / Mbed 2 deprecated lpc4088_ebb_gui_wave

Graphical demo for the LPC4088 Experiment Base Board with one of the Display Expansion Kits. This program displays a number of dots in a 3D-projected wave.

Dependencies:   EALib mbed

Graphics.cpp@0:d1e4929f6956, 2014-10-03 (annotated)

Committer:
embeddedartists
Date:
Fri Oct 03 13:37:30 2014 +0000
Revision:
0:d1e4929f6956
First version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
embeddedartists 0:d1e4929f6956 1
embeddedartists 0:d1e4929f6956 2 #include "mbed.h"
embeddedartists 0:d1e4929f6956 3 #include "Graphics.h"
embeddedartists 0:d1e4929f6956 4
embeddedartists 0:d1e4929f6956 5
embeddedartists 0:d1e4929f6956 6 Graphics::Graphics(uint16_t *pFrmBuf, uint16_t dispWidth, uint16_t dispHeight)
embeddedartists 0:d1e4929f6956 7 {
embeddedartists 0:d1e4929f6956 8 this->windowX = dispWidth;
embeddedartists 0:d1e4929f6956 9 this->windowY = dispHeight;
embeddedartists 0:d1e4929f6956 10 this->pFrmBuf = pFrmBuf;
embeddedartists 0:d1e4929f6956 11 }
embeddedartists 0:d1e4929f6956 12
embeddedartists 0:d1e4929f6956 13 void Graphics::setFrameBuffer( uint16_t *pFrmBuf )
embeddedartists 0:d1e4929f6956 14 {
embeddedartists 0:d1e4929f6956 15 this->pFrmBuf = pFrmBuf;
embeddedartists 0:d1e4929f6956 16 }
embeddedartists 0:d1e4929f6956 17
embeddedartists 0:d1e4929f6956 18 int32_t Graphics::abs(int32_t v1) const
embeddedartists 0:d1e4929f6956 19 {
embeddedartists 0:d1e4929f6956 20 if (v1 > 0)
embeddedartists 0:d1e4929f6956 21 return v1;
embeddedartists 0:d1e4929f6956 22
embeddedartists 0:d1e4929f6956 23 return -v1;
embeddedartists 0:d1e4929f6956 24 }
embeddedartists 0:d1e4929f6956 25
embeddedartists 0:d1e4929f6956 26 /***********************************************************************
embeddedartists 0:d1e4929f6956 27 *
embeddedartists 0:d1e4929f6956 28 * Function: swim_put_line_raw
embeddedartists 0:d1e4929f6956 29 *
embeddedartists 0:d1e4929f6956 30 * Purpose: Draw a line on the physical display
embeddedartists 0:d1e4929f6956 31 *
embeddedartists 0:d1e4929f6956 32 * Processing:
embeddedartists 0:d1e4929f6956 33 * See function.
embeddedartists 0:d1e4929f6956 34 *
embeddedartists 0:d1e4929f6956 35 * Parameters:
embeddedartists 0:d1e4929f6956 36 * win : Window identifier
embeddedartists 0:d1e4929f6956 37 * x1 : Physical X position of X line start
embeddedartists 0:d1e4929f6956 38 * y1 : Physical Y position of Y line start
embeddedartists 0:d1e4929f6956 39 * x2 : Physical X position of X line end
embeddedartists 0:d1e4929f6956 40 * y2 : Physical Y position of Y line end
embeddedartists 0:d1e4929f6956 41 *
embeddedartists 0:d1e4929f6956 42 * Outputs: None
embeddedartists 0:d1e4929f6956 43 *
embeddedartists 0:d1e4929f6956 44 * Returns: Nothing
embeddedartists 0:d1e4929f6956 45 *
embeddedartists 0:d1e4929f6956 46 * Notes: None
embeddedartists 0:d1e4929f6956 47 *
embeddedartists 0:d1e4929f6956 48 **********************************************************************/
embeddedartists 0:d1e4929f6956 49 void Graphics::put_line(int32_t x1, int32_t y1, int32_t x2, int32_t y2, int16_t color)
embeddedartists 0:d1e4929f6956 50 {
embeddedartists 0:d1e4929f6956 51 int32_t e2, sx, sy, dx, dy, err;
embeddedartists 0:d1e4929f6956 52
embeddedartists 0:d1e4929f6956 53 /* calculate delta_x and delta_y */
embeddedartists 0:d1e4929f6956 54 dx = abs(x2 - x1);
embeddedartists 0:d1e4929f6956 55 dy = abs(y2 - y1);
embeddedartists 0:d1e4929f6956 56
embeddedartists 0:d1e4929f6956 57 /* set the direction for the step for both x and y, and
embeddedartists 0:d1e4929f6956 58 initialize the error */
embeddedartists 0:d1e4929f6956 59 if (x1 < x2)
embeddedartists 0:d1e4929f6956 60 sx = 1;
embeddedartists 0:d1e4929f6956 61 else
embeddedartists 0:d1e4929f6956 62 sx = -1;
embeddedartists 0:d1e4929f6956 63
embeddedartists 0:d1e4929f6956 64 if (y1 < y2)
embeddedartists 0:d1e4929f6956 65 sy = 1;
embeddedartists 0:d1e4929f6956 66 else
embeddedartists 0:d1e4929f6956 67 sy = -1;
embeddedartists 0:d1e4929f6956 68
embeddedartists 0:d1e4929f6956 69 err = dx - dy;
embeddedartists 0:d1e4929f6956 70
embeddedartists 0:d1e4929f6956 71 while (1)
embeddedartists 0:d1e4929f6956 72 {
embeddedartists 0:d1e4929f6956 73 if ((x1 >= 0) && (x1 < this->windowX) &&
embeddedartists 0:d1e4929f6956 74 (y1 >= 0) && (y1 < this->windowY))
embeddedartists 0:d1e4929f6956 75 this->pFrmBuf[x1 + (this->windowX*y1)] = color;
embeddedartists 0:d1e4929f6956 76
embeddedartists 0:d1e4929f6956 77 if ((x1 == x2) && (y1 == y2))
embeddedartists 0:d1e4929f6956 78 return;
embeddedartists 0:d1e4929f6956 79
embeddedartists 0:d1e4929f6956 80 e2 = 2 * err;
embeddedartists 0:d1e4929f6956 81 if (e2 > -dy)
embeddedartists 0:d1e4929f6956 82 {
embeddedartists 0:d1e4929f6956 83 err -= dy;
embeddedartists 0:d1e4929f6956 84 x1 += sx;
embeddedartists 0:d1e4929f6956 85 }
embeddedartists 0:d1e4929f6956 86 if (e2 < dx)
embeddedartists 0:d1e4929f6956 87 {
embeddedartists 0:d1e4929f6956 88 err += dx;
embeddedartists 0:d1e4929f6956 89 y1 += sy;
embeddedartists 0:d1e4929f6956 90 }
embeddedartists 0:d1e4929f6956 91 }
embeddedartists 0:d1e4929f6956 92 }
embeddedartists 0:d1e4929f6956 93
embeddedartists 0:d1e4929f6956 94 /***********************************************************************
embeddedartists 0:d1e4929f6956 95 *
embeddedartists 0:d1e4929f6956 96 * Function: plot4points
embeddedartists 0:d1e4929f6956 97 *
embeddedartists 0:d1e4929f6956 98 * Purpose:
embeddedartists 0:d1e4929f6956 99 *
embeddedartists 0:d1e4929f6956 100 * Processing:
embeddedartists 0:d1e4929f6956 101 * See function.
embeddedartists 0:d1e4929f6956 102 *
embeddedartists 0:d1e4929f6956 103 * Parameters:
embeddedartists 0:d1e4929f6956 104 * win : Window identifier
embeddedartists 0:d1e4929f6956 105 * cx :
embeddedartists 0:d1e4929f6956 106 * cy :
embeddedartists 0:d1e4929f6956 107 * x :
embeddedartists 0:d1e4929f6956 108 * y :
embeddedartists 0:d1e4929f6956 109 * Filled :
embeddedartists 0:d1e4929f6956 110 *
embeddedartists 0:d1e4929f6956 111 * Outputs: None
embeddedartists 0:d1e4929f6956 112 *
embeddedartists 0:d1e4929f6956 113 * Returns: Nothing
embeddedartists 0:d1e4929f6956 114 *
embeddedartists 0:d1e4929f6956 115 * Notes: None
embeddedartists 0:d1e4929f6956 116 *
embeddedartists 0:d1e4929f6956 117 **********************************************************************/
embeddedartists 0:d1e4929f6956 118 void Graphics::plot4points( int32_t cx, int32_t cy, int32_t x, int32_t y, int16_t color, int32_t Filled )
embeddedartists 0:d1e4929f6956 119 {
embeddedartists 0:d1e4929f6956 120 int16_t x0, x1, y0, y1;
embeddedartists 0:d1e4929f6956 121
embeddedartists 0:d1e4929f6956 122 y0 = cy + y;
embeddedartists 0:d1e4929f6956 123 y1 = cy - y;
embeddedartists 0:d1e4929f6956 124 if( Filled )
embeddedartists 0:d1e4929f6956 125 {
embeddedartists 0:d1e4929f6956 126 for( x0=cx - x; x0<=cx + x; x0++ )
embeddedartists 0:d1e4929f6956 127 {
embeddedartists 0:d1e4929f6956 128 if ((x0>=0) && (x0<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:d1e4929f6956 129 this->pFrmBuf[x0 + (this->windowX*y0)] = color;
embeddedartists 0:d1e4929f6956 130 if ((x0>=0) && (x0<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:d1e4929f6956 131 this->pFrmBuf[x0 + (this->windowX*y1)] = color;
embeddedartists 0:d1e4929f6956 132 }
embeddedartists 0:d1e4929f6956 133 }
embeddedartists 0:d1e4929f6956 134 else
embeddedartists 0:d1e4929f6956 135 {
embeddedartists 0:d1e4929f6956 136 x0 = cx + x;
embeddedartists 0:d1e4929f6956 137 x1 = cx - x;
embeddedartists 0:d1e4929f6956 138 if ((x0>=0) && (x0<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:d1e4929f6956 139 this->pFrmBuf[x0 + (this->windowX*y0)] = color;
embeddedartists 0:d1e4929f6956 140 if ((x != 0) &&
embeddedartists 0:d1e4929f6956 141 (x1>=0) && (x1<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:d1e4929f6956 142 this->pFrmBuf[x1 + (this->windowX*y0)] = color;
embeddedartists 0:d1e4929f6956 143 if ((y != 0) &&
embeddedartists 0:d1e4929f6956 144 (x0>=0) && (x0<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:d1e4929f6956 145 this->pFrmBuf[x0 + (this->windowX*y1)] = color;
embeddedartists 0:d1e4929f6956 146 if ((x != 0 && y != 0) &&
embeddedartists 0:d1e4929f6956 147 (x1>=0) && (x1<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:d1e4929f6956 148 this->pFrmBuf[x1 + (this->windowX*y1)] = color;
embeddedartists 0:d1e4929f6956 149 }
embeddedartists 0:d1e4929f6956 150 }
embeddedartists 0:d1e4929f6956 151
embeddedartists 0:d1e4929f6956 152 /***********************************************************************
embeddedartists 0:d1e4929f6956 153 *
embeddedartists 0:d1e4929f6956 154 * Function: plot8points
embeddedartists 0:d1e4929f6956 155 *
embeddedartists 0:d1e4929f6956 156 * Purpose:
embeddedartists 0:d1e4929f6956 157 *
embeddedartists 0:d1e4929f6956 158 * Processing:
embeddedartists 0:d1e4929f6956 159 * See function.
embeddedartists 0:d1e4929f6956 160 *
embeddedartists 0:d1e4929f6956 161 * Parameters:
embeddedartists 0:d1e4929f6956 162 * win : Window identifier
embeddedartists 0:d1e4929f6956 163 * cx :
embeddedartists 0:d1e4929f6956 164 * cy :
embeddedartists 0:d1e4929f6956 165 * x :
embeddedartists 0:d1e4929f6956 166 * y :
embeddedartists 0:d1e4929f6956 167 * Filled :
embeddedartists 0:d1e4929f6956 168 *
embeddedartists 0:d1e4929f6956 169 * Outputs: None
embeddedartists 0:d1e4929f6956 170 *
embeddedartists 0:d1e4929f6956 171 * Returns: Nothing
embeddedartists 0:d1e4929f6956 172 *
embeddedartists 0:d1e4929f6956 173 * Notes: None
embeddedartists 0:d1e4929f6956 174 *
embeddedartists 0:d1e4929f6956 175 **********************************************************************/
embeddedartists 0:d1e4929f6956 176 void Graphics::plot8points( int32_t cx, int32_t cy, int32_t x, int32_t y, int16_t color, int32_t Filled )
embeddedartists 0:d1e4929f6956 177 {
embeddedartists 0:d1e4929f6956 178 plot4points( cx, cy, x, y, color, Filled );
embeddedartists 0:d1e4929f6956 179 if (x != y)
embeddedartists 0:d1e4929f6956 180 plot4points( cx, cy, y, x, color, Filled );
embeddedartists 0:d1e4929f6956 181 }
embeddedartists 0:d1e4929f6956 182
embeddedartists 0:d1e4929f6956 183 /***********************************************************************
embeddedartists 0:d1e4929f6956 184 *
embeddedartists 0:d1e4929f6956 185 * Function: swim_put_circle
embeddedartists 0:d1e4929f6956 186 *
embeddedartists 0:d1e4929f6956 187 * Purpose:
embeddedartists 0:d1e4929f6956 188 *
embeddedartists 0:d1e4929f6956 189 * Processing:
embeddedartists 0:d1e4929f6956 190 * See function.
embeddedartists 0:d1e4929f6956 191 *
embeddedartists 0:d1e4929f6956 192 * Parameters:
embeddedartists 0:d1e4929f6956 193 * win : Window identifier
embeddedartists 0:d1e4929f6956 194 * cx :
embeddedartists 0:d1e4929f6956 195 * cy :
embeddedartists 0:d1e4929f6956 196 * radius :
embeddedartists 0:d1e4929f6956 197 * Filled :
embeddedartists 0:d1e4929f6956 198 *
embeddedartists 0:d1e4929f6956 199 * Outputs: None
embeddedartists 0:d1e4929f6956 200 *
embeddedartists 0:d1e4929f6956 201 * Returns: Nothing
embeddedartists 0:d1e4929f6956 202 *
embeddedartists 0:d1e4929f6956 203 * Notes: None
embeddedartists 0:d1e4929f6956 204 *
embeddedartists 0:d1e4929f6956 205 **********************************************************************/
embeddedartists 0:d1e4929f6956 206 void Graphics::put_circle( int32_t cx, int32_t cy, int16_t color, int32_t radius, int32_t Filled )
embeddedartists 0:d1e4929f6956 207 {
embeddedartists 0:d1e4929f6956 208 int32_t Error = -radius;
embeddedartists 0:d1e4929f6956 209 int16_t x = radius;
embeddedartists 0:d1e4929f6956 210 int16_t y = 0;
embeddedartists 0:d1e4929f6956 211
embeddedartists 0:d1e4929f6956 212 while( x >= y )
embeddedartists 0:d1e4929f6956 213 {
embeddedartists 0:d1e4929f6956 214 plot8points( cx, cy, x, y, color, Filled );
embeddedartists 0:d1e4929f6956 215
embeddedartists 0:d1e4929f6956 216 Error += y;
embeddedartists 0:d1e4929f6956 217 ++y;
embeddedartists 0:d1e4929f6956 218 Error += y;
embeddedartists 0:d1e4929f6956 219
embeddedartists 0:d1e4929f6956 220 if( Error >= 0 )
embeddedartists 0:d1e4929f6956 221 {
embeddedartists 0:d1e4929f6956 222 --x;
embeddedartists 0:d1e4929f6956 223 Error -= x;
embeddedartists 0:d1e4929f6956 224 Error -= x;
embeddedartists 0:d1e4929f6956 225 }
embeddedartists 0:d1e4929f6956 226 }
embeddedartists 0:d1e4929f6956 227 }
embeddedartists 0:d1e4929f6956 228
embeddedartists 0:d1e4929f6956 229 void Graphics::put_dot( int32_t cx, int32_t cy, int16_t color )
embeddedartists 0:d1e4929f6956 230 {
embeddedartists 0:d1e4929f6956 231 int size = 1;
embeddedartists 0:d1e4929f6956 232 for (int y1 = cy - size; y1 <= (cy + size); y1++) {
embeddedartists 0:d1e4929f6956 233 for (int x1 = cx - size; x1 <= (cx + size); x1++) {
embeddedartists 0:d1e4929f6956 234 if ((x1 >= 0) && (x1 < this->windowX) && (y1 >= 0) && (y1 < this->windowY)) {
embeddedartists 0:d1e4929f6956 235 this->pFrmBuf[x1 + (this->windowX*y1)] = color;
embeddedartists 0:d1e4929f6956 236 }
embeddedartists 0:d1e4929f6956 237 }
embeddedartists 0:d1e4929f6956 238 }
embeddedartists 0:d1e4929f6956 239 }
embeddedartists 0:d1e4929f6956 240
embeddedartists 0:d1e4929f6956 241