EmbeddedArtists AB / Mbed 2 deprecated app_lcdboard_demo_picture

Example for the LPC4088 QSB Base Board

Dependencies:   EALib mbed

Graphics.cpp@3:33a36d79ab7d, 2014-04-09 (annotated)

Committer:
embeddedartists
Date:
Wed Apr 09 10:26:13 2014 +0000
Revision:
3:33a36d79ab7d
Parent:
0:83b8ee8e8d4b 
Updated to latest version of EALib

Who changed what in which revision?

UserRevisionLine numberNew contents of line
embeddedartists 0:83b8ee8e8d4b 1
embeddedartists 0:83b8ee8e8d4b 2 #include "mbed.h"
embeddedartists 0:83b8ee8e8d4b 3 #include "Graphics.h"
embeddedartists 0:83b8ee8e8d4b 4
embeddedartists 0:83b8ee8e8d4b 5
embeddedartists 0:83b8ee8e8d4b 6 Graphics::Graphics(uint16_t *pFrmBuf, uint16_t dispWidth, uint16_t dispHeight)
embeddedartists 0:83b8ee8e8d4b 7 {
embeddedartists 0:83b8ee8e8d4b 8 this->windowX = dispWidth;
embeddedartists 0:83b8ee8e8d4b 9 this->windowY = dispHeight;
embeddedartists 0:83b8ee8e8d4b 10 this->pFrmBuf = pFrmBuf;
embeddedartists 0:83b8ee8e8d4b 11 }
embeddedartists 0:83b8ee8e8d4b 12
embeddedartists 0:83b8ee8e8d4b 13 void Graphics::setFrameBuffer( uint16_t *pFrmBuf )
embeddedartists 0:83b8ee8e8d4b 14 {
embeddedartists 0:83b8ee8e8d4b 15 this->pFrmBuf = pFrmBuf;
embeddedartists 0:83b8ee8e8d4b 16 }
embeddedartists 0:83b8ee8e8d4b 17
embeddedartists 0:83b8ee8e8d4b 18 int32_t Graphics::abs(int32_t v1) const
embeddedartists 0:83b8ee8e8d4b 19 {
embeddedartists 0:83b8ee8e8d4b 20 if (v1 > 0)
embeddedartists 0:83b8ee8e8d4b 21 return v1;
embeddedartists 0:83b8ee8e8d4b 22
embeddedartists 0:83b8ee8e8d4b 23 return -v1;
embeddedartists 0:83b8ee8e8d4b 24 }
embeddedartists 0:83b8ee8e8d4b 25
embeddedartists 0:83b8ee8e8d4b 26 /***********************************************************************
embeddedartists 0:83b8ee8e8d4b 27 *
embeddedartists 0:83b8ee8e8d4b 28 * Function: swim_put_line_raw
embeddedartists 0:83b8ee8e8d4b 29 *
embeddedartists 0:83b8ee8e8d4b 30 * Purpose: Draw a line on the physical display
embeddedartists 0:83b8ee8e8d4b 31 *
embeddedartists 0:83b8ee8e8d4b 32 * Processing:
embeddedartists 0:83b8ee8e8d4b 33 * See function.
embeddedartists 0:83b8ee8e8d4b 34 *
embeddedartists 0:83b8ee8e8d4b 35 * Parameters:
embeddedartists 0:83b8ee8e8d4b 36 * win : Window identifier
embeddedartists 0:83b8ee8e8d4b 37 * x1 : Physical X position of X line start
embeddedartists 0:83b8ee8e8d4b 38 * y1 : Physical Y position of Y line start
embeddedartists 0:83b8ee8e8d4b 39 * x2 : Physical X position of X line end
embeddedartists 0:83b8ee8e8d4b 40 * y2 : Physical Y position of Y line end
embeddedartists 0:83b8ee8e8d4b 41 *
embeddedartists 0:83b8ee8e8d4b 42 * Outputs: None
embeddedartists 0:83b8ee8e8d4b 43 *
embeddedartists 0:83b8ee8e8d4b 44 * Returns: Nothing
embeddedartists 0:83b8ee8e8d4b 45 *
embeddedartists 0:83b8ee8e8d4b 46 * Notes: None
embeddedartists 0:83b8ee8e8d4b 47 *
embeddedartists 0:83b8ee8e8d4b 48 **********************************************************************/
embeddedartists 0:83b8ee8e8d4b 49 void Graphics::put_line(int32_t x1, int32_t y1, int32_t x2, int32_t y2, int16_t color)
embeddedartists 0:83b8ee8e8d4b 50 {
embeddedartists 0:83b8ee8e8d4b 51 int32_t e2, sx, sy, dx, dy, err;
embeddedartists 0:83b8ee8e8d4b 52
embeddedartists 0:83b8ee8e8d4b 53 /* calculate delta_x and delta_y */
embeddedartists 0:83b8ee8e8d4b 54 dx = abs(x2 - x1);
embeddedartists 0:83b8ee8e8d4b 55 dy = abs(y2 - y1);
embeddedartists 0:83b8ee8e8d4b 56
embeddedartists 0:83b8ee8e8d4b 57 /* set the direction for the step for both x and y, and
embeddedartists 0:83b8ee8e8d4b 58 initialize the error */
embeddedartists 0:83b8ee8e8d4b 59 if (x1 < x2)
embeddedartists 0:83b8ee8e8d4b 60 sx = 1;
embeddedartists 0:83b8ee8e8d4b 61 else
embeddedartists 0:83b8ee8e8d4b 62 sx = -1;
embeddedartists 0:83b8ee8e8d4b 63
embeddedartists 0:83b8ee8e8d4b 64 if (y1 < y2)
embeddedartists 0:83b8ee8e8d4b 65 sy = 1;
embeddedartists 0:83b8ee8e8d4b 66 else
embeddedartists 0:83b8ee8e8d4b 67 sy = -1;
embeddedartists 0:83b8ee8e8d4b 68
embeddedartists 0:83b8ee8e8d4b 69 err = dx - dy;
embeddedartists 0:83b8ee8e8d4b 70
embeddedartists 0:83b8ee8e8d4b 71 while (1)
embeddedartists 0:83b8ee8e8d4b 72 {
embeddedartists 0:83b8ee8e8d4b 73 if ((x1 >= 0) && (x1 < this->windowX) &&
embeddedartists 0:83b8ee8e8d4b 74 (y1 >= 0) && (y1 < this->windowY))
embeddedartists 0:83b8ee8e8d4b 75 this->pFrmBuf[x1 + (this->windowX*y1)] = color;
embeddedartists 0:83b8ee8e8d4b 76
embeddedartists 0:83b8ee8e8d4b 77 if ((x1 == x2) && (y1 == y2))
embeddedartists 0:83b8ee8e8d4b 78 return;
embeddedartists 0:83b8ee8e8d4b 79
embeddedartists 0:83b8ee8e8d4b 80 e2 = 2 * err;
embeddedartists 0:83b8ee8e8d4b 81 if (e2 > -dy)
embeddedartists 0:83b8ee8e8d4b 82 {
embeddedartists 0:83b8ee8e8d4b 83 err -= dy;
embeddedartists 0:83b8ee8e8d4b 84 x1 += sx;
embeddedartists 0:83b8ee8e8d4b 85 }
embeddedartists 0:83b8ee8e8d4b 86 if (e2 < dx)
embeddedartists 0:83b8ee8e8d4b 87 {
embeddedartists 0:83b8ee8e8d4b 88 err += dx;
embeddedartists 0:83b8ee8e8d4b 89 y1 += sy;
embeddedartists 0:83b8ee8e8d4b 90 }
embeddedartists 0:83b8ee8e8d4b 91 }
embeddedartists 0:83b8ee8e8d4b 92 }
embeddedartists 0:83b8ee8e8d4b 93
embeddedartists 0:83b8ee8e8d4b 94 /***********************************************************************
embeddedartists 0:83b8ee8e8d4b 95 *
embeddedartists 0:83b8ee8e8d4b 96 * Function: plot4points
embeddedartists 0:83b8ee8e8d4b 97 *
embeddedartists 0:83b8ee8e8d4b 98 * Purpose:
embeddedartists 0:83b8ee8e8d4b 99 *
embeddedartists 0:83b8ee8e8d4b 100 * Processing:
embeddedartists 0:83b8ee8e8d4b 101 * See function.
embeddedartists 0:83b8ee8e8d4b 102 *
embeddedartists 0:83b8ee8e8d4b 103 * Parameters:
embeddedartists 0:83b8ee8e8d4b 104 * win : Window identifier
embeddedartists 0:83b8ee8e8d4b 105 * cx :
embeddedartists 0:83b8ee8e8d4b 106 * cy :
embeddedartists 0:83b8ee8e8d4b 107 * x :
embeddedartists 0:83b8ee8e8d4b 108 * y :
embeddedartists 0:83b8ee8e8d4b 109 * Filled :
embeddedartists 0:83b8ee8e8d4b 110 *
embeddedartists 0:83b8ee8e8d4b 111 * Outputs: None
embeddedartists 0:83b8ee8e8d4b 112 *
embeddedartists 0:83b8ee8e8d4b 113 * Returns: Nothing
embeddedartists 0:83b8ee8e8d4b 114 *
embeddedartists 0:83b8ee8e8d4b 115 * Notes: None
embeddedartists 0:83b8ee8e8d4b 116 *
embeddedartists 0:83b8ee8e8d4b 117 **********************************************************************/
embeddedartists 0:83b8ee8e8d4b 118 void Graphics::plot4points( int32_t cx, int32_t cy, int32_t x, int32_t y, int16_t color, int32_t Filled )
embeddedartists 0:83b8ee8e8d4b 119 {
embeddedartists 0:83b8ee8e8d4b 120 int16_t x0, x1, y0, y1;
embeddedartists 0:83b8ee8e8d4b 121
embeddedartists 0:83b8ee8e8d4b 122 y0 = cy + y;
embeddedartists 0:83b8ee8e8d4b 123 y1 = cy - y;
embeddedartists 0:83b8ee8e8d4b 124 if( Filled )
embeddedartists 0:83b8ee8e8d4b 125 {
embeddedartists 0:83b8ee8e8d4b 126 for( x0=cx - x; x0<=cx + x; x0++ )
embeddedartists 0:83b8ee8e8d4b 127 {
embeddedartists 0:83b8ee8e8d4b 128 if ((x0>=0) && (x0<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:83b8ee8e8d4b 129 this->pFrmBuf[x0 + (this->windowX*y0)] = color;
embeddedartists 0:83b8ee8e8d4b 130 if ((x0>=0) && (x0<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:83b8ee8e8d4b 131 this->pFrmBuf[x0 + (this->windowX*y1)] = color;
embeddedartists 0:83b8ee8e8d4b 132 }
embeddedartists 0:83b8ee8e8d4b 133 }
embeddedartists 0:83b8ee8e8d4b 134 else
embeddedartists 0:83b8ee8e8d4b 135 {
embeddedartists 0:83b8ee8e8d4b 136 x0 = cx + x;
embeddedartists 0:83b8ee8e8d4b 137 x1 = cx - x;
embeddedartists 0:83b8ee8e8d4b 138 if ((x0>=0) && (x0<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:83b8ee8e8d4b 139 this->pFrmBuf[x0 + (this->windowX*y0)] = color;
embeddedartists 0:83b8ee8e8d4b 140 if ((x != 0) &&
embeddedartists 0:83b8ee8e8d4b 141 (x1>=0) && (x1<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:83b8ee8e8d4b 142 this->pFrmBuf[x1 + (this->windowX*y0)] = color;
embeddedartists 0:83b8ee8e8d4b 143 if ((y != 0) &&
embeddedartists 0:83b8ee8e8d4b 144 (x0>=0) && (x0<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:83b8ee8e8d4b 145 this->pFrmBuf[x0 + (this->windowX*y1)] = color;
embeddedartists 0:83b8ee8e8d4b 146 if ((x != 0 && y != 0) &&
embeddedartists 0:83b8ee8e8d4b 147 (x1>=0) && (x1<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:83b8ee8e8d4b 148 this->pFrmBuf[x1 + (this->windowX*y1)] = color;
embeddedartists 0:83b8ee8e8d4b 149 }
embeddedartists 0:83b8ee8e8d4b 150 }
embeddedartists 0:83b8ee8e8d4b 151
embeddedartists 0:83b8ee8e8d4b 152 /***********************************************************************
embeddedartists 0:83b8ee8e8d4b 153 *
embeddedartists 0:83b8ee8e8d4b 154 * Function: plot8points
embeddedartists 0:83b8ee8e8d4b 155 *
embeddedartists 0:83b8ee8e8d4b 156 * Purpose:
embeddedartists 0:83b8ee8e8d4b 157 *
embeddedartists 0:83b8ee8e8d4b 158 * Processing:
embeddedartists 0:83b8ee8e8d4b 159 * See function.
embeddedartists 0:83b8ee8e8d4b 160 *
embeddedartists 0:83b8ee8e8d4b 161 * Parameters:
embeddedartists 0:83b8ee8e8d4b 162 * win : Window identifier
embeddedartists 0:83b8ee8e8d4b 163 * cx :
embeddedartists 0:83b8ee8e8d4b 164 * cy :
embeddedartists 0:83b8ee8e8d4b 165 * x :
embeddedartists 0:83b8ee8e8d4b 166 * y :
embeddedartists 0:83b8ee8e8d4b 167 * Filled :
embeddedartists 0:83b8ee8e8d4b 168 *
embeddedartists 0:83b8ee8e8d4b 169 * Outputs: None
embeddedartists 0:83b8ee8e8d4b 170 *
embeddedartists 0:83b8ee8e8d4b 171 * Returns: Nothing
embeddedartists 0:83b8ee8e8d4b 172 *
embeddedartists 0:83b8ee8e8d4b 173 * Notes: None
embeddedartists 0:83b8ee8e8d4b 174 *
embeddedartists 0:83b8ee8e8d4b 175 **********************************************************************/
embeddedartists 0:83b8ee8e8d4b 176 void Graphics::plot8points( int32_t cx, int32_t cy, int32_t x, int32_t y, int16_t color, int32_t Filled )
embeddedartists 0:83b8ee8e8d4b 177 {
embeddedartists 0:83b8ee8e8d4b 178 plot4points( cx, cy, x, y, color, Filled );
embeddedartists 0:83b8ee8e8d4b 179 if (x != y)
embeddedartists 0:83b8ee8e8d4b 180 plot4points( cx, cy, y, x, color, Filled );
embeddedartists 0:83b8ee8e8d4b 181 }
embeddedartists 0:83b8ee8e8d4b 182
embeddedartists 0:83b8ee8e8d4b 183 /***********************************************************************
embeddedartists 0:83b8ee8e8d4b 184 *
embeddedartists 0:83b8ee8e8d4b 185 * Function: swim_put_circle
embeddedartists 0:83b8ee8e8d4b 186 *
embeddedartists 0:83b8ee8e8d4b 187 * Purpose:
embeddedartists 0:83b8ee8e8d4b 188 *
embeddedartists 0:83b8ee8e8d4b 189 * Processing:
embeddedartists 0:83b8ee8e8d4b 190 * See function.
embeddedartists 0:83b8ee8e8d4b 191 *
embeddedartists 0:83b8ee8e8d4b 192 * Parameters:
embeddedartists 0:83b8ee8e8d4b 193 * win : Window identifier
embeddedartists 0:83b8ee8e8d4b 194 * cx :
embeddedartists 0:83b8ee8e8d4b 195 * cy :
embeddedartists 0:83b8ee8e8d4b 196 * radius :
embeddedartists 0:83b8ee8e8d4b 197 * Filled :
embeddedartists 0:83b8ee8e8d4b 198 *
embeddedartists 0:83b8ee8e8d4b 199 * Outputs: None
embeddedartists 0:83b8ee8e8d4b 200 *
embeddedartists 0:83b8ee8e8d4b 201 * Returns: Nothing
embeddedartists 0:83b8ee8e8d4b 202 *
embeddedartists 0:83b8ee8e8d4b 203 * Notes: None
embeddedartists 0:83b8ee8e8d4b 204 *
embeddedartists 0:83b8ee8e8d4b 205 **********************************************************************/
embeddedartists 0:83b8ee8e8d4b 206 void Graphics::put_circle( int32_t cx, int32_t cy, int16_t color, int32_t radius, int32_t Filled )
embeddedartists 0:83b8ee8e8d4b 207 {
embeddedartists 0:83b8ee8e8d4b 208 int32_t Error = -radius;
embeddedartists 0:83b8ee8e8d4b 209 int16_t x = radius;
embeddedartists 0:83b8ee8e8d4b 210 int16_t y = 0;
embeddedartists 0:83b8ee8e8d4b 211
embeddedartists 0:83b8ee8e8d4b 212 while( x >= y )
embeddedartists 0:83b8ee8e8d4b 213 {
embeddedartists 0:83b8ee8e8d4b 214 plot8points( cx, cy, x, y, color, Filled );
embeddedartists 0:83b8ee8e8d4b 215
embeddedartists 0:83b8ee8e8d4b 216 Error += y;
embeddedartists 0:83b8ee8e8d4b 217 ++y;
embeddedartists 0:83b8ee8e8d4b 218 Error += y;
embeddedartists 0:83b8ee8e8d4b 219
embeddedartists 0:83b8ee8e8d4b 220 if( Error >= 0 )
embeddedartists 0:83b8ee8e8d4b 221 {
embeddedartists 0:83b8ee8e8d4b 222 --x;
embeddedartists 0:83b8ee8e8d4b 223 Error -= x;
embeddedartists 0:83b8ee8e8d4b 224 Error -= x;
embeddedartists 0:83b8ee8e8d4b 225 }
embeddedartists 0:83b8ee8e8d4b 226 }
embeddedartists 0:83b8ee8e8d4b 227 }
embeddedartists 0:83b8ee8e8d4b 228
embeddedartists 0:83b8ee8e8d4b 229
embeddedartists 0:83b8ee8e8d4b 230