EmbeddedArtists AB / Mbed 2 deprecated app_lcdboard_demo_globe

Example for the LPC4088 QSB Base Board

Dependencies:   EALib mbed

Graphics.cpp@1:6131a78e7e97, 2014-04-09 (annotated)

Committer:
embeddedartists
Date:
Wed Apr 09 09:46:04 2014 +0000
Revision:
1:6131a78e7e97
Parent:
0:7dd43900b657 
Updated to latest version of EALib

Who changed what in which revision?

UserRevisionLine numberNew contents of line
embeddedartists 0:7dd43900b657 1
embeddedartists 0:7dd43900b657 2 #include "mbed.h"
embeddedartists 0:7dd43900b657 3 #include "Graphics.h"
embeddedartists 0:7dd43900b657 4
embeddedartists 0:7dd43900b657 5
embeddedartists 0:7dd43900b657 6 Graphics::Graphics(uint16_t *pFrmBuf, uint16_t dispWidth, uint16_t dispHeight)
embeddedartists 0:7dd43900b657 7 {
embeddedartists 0:7dd43900b657 8 this->windowX = dispWidth;
embeddedartists 0:7dd43900b657 9 this->windowY = dispHeight;
embeddedartists 0:7dd43900b657 10 this->pFrmBuf = pFrmBuf;
embeddedartists 0:7dd43900b657 11 }
embeddedartists 0:7dd43900b657 12
embeddedartists 0:7dd43900b657 13 void Graphics::setFrameBuffer( uint16_t *pFrmBuf )
embeddedartists 0:7dd43900b657 14 {
embeddedartists 0:7dd43900b657 15 this->pFrmBuf = pFrmBuf;
embeddedartists 0:7dd43900b657 16 }
embeddedartists 0:7dd43900b657 17
embeddedartists 0:7dd43900b657 18 int32_t Graphics::abs(int32_t v1) const
embeddedartists 0:7dd43900b657 19 {
embeddedartists 0:7dd43900b657 20 if (v1 > 0)
embeddedartists 0:7dd43900b657 21 return v1;
embeddedartists 0:7dd43900b657 22
embeddedartists 0:7dd43900b657 23 return -v1;
embeddedartists 0:7dd43900b657 24 }
embeddedartists 0:7dd43900b657 25
embeddedartists 0:7dd43900b657 26 /***********************************************************************
embeddedartists 0:7dd43900b657 27 *
embeddedartists 0:7dd43900b657 28 * Function: swim_put_line_raw
embeddedartists 0:7dd43900b657 29 *
embeddedartists 0:7dd43900b657 30 * Purpose: Draw a line on the physical display
embeddedartists 0:7dd43900b657 31 *
embeddedartists 0:7dd43900b657 32 * Processing:
embeddedartists 0:7dd43900b657 33 * See function.
embeddedartists 0:7dd43900b657 34 *
embeddedartists 0:7dd43900b657 35 * Parameters:
embeddedartists 0:7dd43900b657 36 * win : Window identifier
embeddedartists 0:7dd43900b657 37 * x1 : Physical X position of X line start
embeddedartists 0:7dd43900b657 38 * y1 : Physical Y position of Y line start
embeddedartists 0:7dd43900b657 39 * x2 : Physical X position of X line end
embeddedartists 0:7dd43900b657 40 * y2 : Physical Y position of Y line end
embeddedartists 0:7dd43900b657 41 *
embeddedartists 0:7dd43900b657 42 * Outputs: None
embeddedartists 0:7dd43900b657 43 *
embeddedartists 0:7dd43900b657 44 * Returns: Nothing
embeddedartists 0:7dd43900b657 45 *
embeddedartists 0:7dd43900b657 46 * Notes: None
embeddedartists 0:7dd43900b657 47 *
embeddedartists 0:7dd43900b657 48 **********************************************************************/
embeddedartists 0:7dd43900b657 49 void Graphics::put_line(int32_t x1, int32_t y1, int32_t x2, int32_t y2, int16_t color)
embeddedartists 0:7dd43900b657 50 {
embeddedartists 0:7dd43900b657 51 int32_t e2, sx, sy, dx, dy, err;
embeddedartists 0:7dd43900b657 52
embeddedartists 0:7dd43900b657 53 /* calculate delta_x and delta_y */
embeddedartists 0:7dd43900b657 54 dx = abs(x2 - x1);
embeddedartists 0:7dd43900b657 55 dy = abs(y2 - y1);
embeddedartists 0:7dd43900b657 56
embeddedartists 0:7dd43900b657 57 /* set the direction for the step for both x and y, and
embeddedartists 0:7dd43900b657 58 initialize the error */
embeddedartists 0:7dd43900b657 59 if (x1 < x2)
embeddedartists 0:7dd43900b657 60 sx = 1;
embeddedartists 0:7dd43900b657 61 else
embeddedartists 0:7dd43900b657 62 sx = -1;
embeddedartists 0:7dd43900b657 63
embeddedartists 0:7dd43900b657 64 if (y1 < y2)
embeddedartists 0:7dd43900b657 65 sy = 1;
embeddedartists 0:7dd43900b657 66 else
embeddedartists 0:7dd43900b657 67 sy = -1;
embeddedartists 0:7dd43900b657 68
embeddedartists 0:7dd43900b657 69 err = dx - dy;
embeddedartists 0:7dd43900b657 70
embeddedartists 0:7dd43900b657 71 while (1)
embeddedartists 0:7dd43900b657 72 {
embeddedartists 0:7dd43900b657 73 if ((x1 >= 0) && (x1 < this->windowX) &&
embeddedartists 0:7dd43900b657 74 (y1 >= 0) && (y1 < this->windowY))
embeddedartists 0:7dd43900b657 75 this->pFrmBuf[x1 + (this->windowX*y1)] = color;
embeddedartists 0:7dd43900b657 76
embeddedartists 0:7dd43900b657 77 if ((x1 == x2) && (y1 == y2))
embeddedartists 0:7dd43900b657 78 return;
embeddedartists 0:7dd43900b657 79
embeddedartists 0:7dd43900b657 80 e2 = 2 * err;
embeddedartists 0:7dd43900b657 81 if (e2 > -dy)
embeddedartists 0:7dd43900b657 82 {
embeddedartists 0:7dd43900b657 83 err -= dy;
embeddedartists 0:7dd43900b657 84 x1 += sx;
embeddedartists 0:7dd43900b657 85 }
embeddedartists 0:7dd43900b657 86 if (e2 < dx)
embeddedartists 0:7dd43900b657 87 {
embeddedartists 0:7dd43900b657 88 err += dx;
embeddedartists 0:7dd43900b657 89 y1 += sy;
embeddedartists 0:7dd43900b657 90 }
embeddedartists 0:7dd43900b657 91 }
embeddedartists 0:7dd43900b657 92 }
embeddedartists 0:7dd43900b657 93
embeddedartists 0:7dd43900b657 94 /***********************************************************************
embeddedartists 0:7dd43900b657 95 *
embeddedartists 0:7dd43900b657 96 * Function: plot4points
embeddedartists 0:7dd43900b657 97 *
embeddedartists 0:7dd43900b657 98 * Purpose:
embeddedartists 0:7dd43900b657 99 *
embeddedartists 0:7dd43900b657 100 * Processing:
embeddedartists 0:7dd43900b657 101 * See function.
embeddedartists 0:7dd43900b657 102 *
embeddedartists 0:7dd43900b657 103 * Parameters:
embeddedartists 0:7dd43900b657 104 * win : Window identifier
embeddedartists 0:7dd43900b657 105 * cx :
embeddedartists 0:7dd43900b657 106 * cy :
embeddedartists 0:7dd43900b657 107 * x :
embeddedartists 0:7dd43900b657 108 * y :
embeddedartists 0:7dd43900b657 109 * Filled :
embeddedartists 0:7dd43900b657 110 *
embeddedartists 0:7dd43900b657 111 * Outputs: None
embeddedartists 0:7dd43900b657 112 *
embeddedartists 0:7dd43900b657 113 * Returns: Nothing
embeddedartists 0:7dd43900b657 114 *
embeddedartists 0:7dd43900b657 115 * Notes: None
embeddedartists 0:7dd43900b657 116 *
embeddedartists 0:7dd43900b657 117 **********************************************************************/
embeddedartists 0:7dd43900b657 118 void Graphics::plot4points( int32_t cx, int32_t cy, int32_t x, int32_t y, int16_t color, int32_t Filled )
embeddedartists 0:7dd43900b657 119 {
embeddedartists 0:7dd43900b657 120 int16_t x0, x1, y0, y1;
embeddedartists 0:7dd43900b657 121
embeddedartists 0:7dd43900b657 122 y0 = cy + y;
embeddedartists 0:7dd43900b657 123 y1 = cy - y;
embeddedartists 0:7dd43900b657 124 if( Filled )
embeddedartists 0:7dd43900b657 125 {
embeddedartists 0:7dd43900b657 126 for( x0=cx - x; x0<=cx + x; x0++ )
embeddedartists 0:7dd43900b657 127 {
embeddedartists 0:7dd43900b657 128 if ((x0>=0) && (x0<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:7dd43900b657 129 this->pFrmBuf[x0 + (this->windowX*y0)] = color;
embeddedartists 0:7dd43900b657 130 if ((x0>=0) && (x0<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:7dd43900b657 131 this->pFrmBuf[x0 + (this->windowX*y1)] = color;
embeddedartists 0:7dd43900b657 132 }
embeddedartists 0:7dd43900b657 133 }
embeddedartists 0:7dd43900b657 134 else
embeddedartists 0:7dd43900b657 135 {
embeddedartists 0:7dd43900b657 136 x0 = cx + x;
embeddedartists 0:7dd43900b657 137 x1 = cx - x;
embeddedartists 0:7dd43900b657 138 if ((x0>=0) && (x0<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:7dd43900b657 139 this->pFrmBuf[x0 + (this->windowX*y0)] = color;
embeddedartists 0:7dd43900b657 140 if ((x != 0) &&
embeddedartists 0:7dd43900b657 141 (x1>=0) && (x1<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:7dd43900b657 142 this->pFrmBuf[x1 + (this->windowX*y0)] = color;
embeddedartists 0:7dd43900b657 143 if ((y != 0) &&
embeddedartists 0:7dd43900b657 144 (x0>=0) && (x0<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:7dd43900b657 145 this->pFrmBuf[x0 + (this->windowX*y1)] = color;
embeddedartists 0:7dd43900b657 146 if ((x != 0 && y != 0) &&
embeddedartists 0:7dd43900b657 147 (x1>=0) && (x1<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:7dd43900b657 148 this->pFrmBuf[x1 + (this->windowX*y1)] = color;
embeddedartists 0:7dd43900b657 149 }
embeddedartists 0:7dd43900b657 150 }
embeddedartists 0:7dd43900b657 151
embeddedartists 0:7dd43900b657 152 /***********************************************************************
embeddedartists 0:7dd43900b657 153 *
embeddedartists 0:7dd43900b657 154 * Function: plot8points
embeddedartists 0:7dd43900b657 155 *
embeddedartists 0:7dd43900b657 156 * Purpose:
embeddedartists 0:7dd43900b657 157 *
embeddedartists 0:7dd43900b657 158 * Processing:
embeddedartists 0:7dd43900b657 159 * See function.
embeddedartists 0:7dd43900b657 160 *
embeddedartists 0:7dd43900b657 161 * Parameters:
embeddedartists 0:7dd43900b657 162 * win : Window identifier
embeddedartists 0:7dd43900b657 163 * cx :
embeddedartists 0:7dd43900b657 164 * cy :
embeddedartists 0:7dd43900b657 165 * x :
embeddedartists 0:7dd43900b657 166 * y :
embeddedartists 0:7dd43900b657 167 * Filled :
embeddedartists 0:7dd43900b657 168 *
embeddedartists 0:7dd43900b657 169 * Outputs: None
embeddedartists 0:7dd43900b657 170 *
embeddedartists 0:7dd43900b657 171 * Returns: Nothing
embeddedartists 0:7dd43900b657 172 *
embeddedartists 0:7dd43900b657 173 * Notes: None
embeddedartists 0:7dd43900b657 174 *
embeddedartists 0:7dd43900b657 175 **********************************************************************/
embeddedartists 0:7dd43900b657 176 void Graphics::plot8points( int32_t cx, int32_t cy, int32_t x, int32_t y, int16_t color, int32_t Filled )
embeddedartists 0:7dd43900b657 177 {
embeddedartists 0:7dd43900b657 178 plot4points( cx, cy, x, y, color, Filled );
embeddedartists 0:7dd43900b657 179 if (x != y)
embeddedartists 0:7dd43900b657 180 plot4points( cx, cy, y, x, color, Filled );
embeddedartists 0:7dd43900b657 181 }
embeddedartists 0:7dd43900b657 182
embeddedartists 0:7dd43900b657 183 /***********************************************************************
embeddedartists 0:7dd43900b657 184 *
embeddedartists 0:7dd43900b657 185 * Function: swim_put_circle
embeddedartists 0:7dd43900b657 186 *
embeddedartists 0:7dd43900b657 187 * Purpose:
embeddedartists 0:7dd43900b657 188 *
embeddedartists 0:7dd43900b657 189 * Processing:
embeddedartists 0:7dd43900b657 190 * See function.
embeddedartists 0:7dd43900b657 191 *
embeddedartists 0:7dd43900b657 192 * Parameters:
embeddedartists 0:7dd43900b657 193 * win : Window identifier
embeddedartists 0:7dd43900b657 194 * cx :
embeddedartists 0:7dd43900b657 195 * cy :
embeddedartists 0:7dd43900b657 196 * radius :
embeddedartists 0:7dd43900b657 197 * Filled :
embeddedartists 0:7dd43900b657 198 *
embeddedartists 0:7dd43900b657 199 * Outputs: None
embeddedartists 0:7dd43900b657 200 *
embeddedartists 0:7dd43900b657 201 * Returns: Nothing
embeddedartists 0:7dd43900b657 202 *
embeddedartists 0:7dd43900b657 203 * Notes: None
embeddedartists 0:7dd43900b657 204 *
embeddedartists 0:7dd43900b657 205 **********************************************************************/
embeddedartists 0:7dd43900b657 206 void Graphics::put_circle( int32_t cx, int32_t cy, int16_t color, int32_t radius, int32_t Filled )
embeddedartists 0:7dd43900b657 207 {
embeddedartists 0:7dd43900b657 208 int32_t Error = -radius;
embeddedartists 0:7dd43900b657 209 int16_t x = radius;
embeddedartists 0:7dd43900b657 210 int16_t y = 0;
embeddedartists 0:7dd43900b657 211
embeddedartists 0:7dd43900b657 212 while( x >= y )
embeddedartists 0:7dd43900b657 213 {
embeddedartists 0:7dd43900b657 214 plot8points( cx, cy, x, y, color, Filled );
embeddedartists 0:7dd43900b657 215
embeddedartists 0:7dd43900b657 216 Error += y;
embeddedartists 0:7dd43900b657 217 ++y;
embeddedartists 0:7dd43900b657 218 Error += y;
embeddedartists 0:7dd43900b657 219
embeddedartists 0:7dd43900b657 220 if( Error >= 0 )
embeddedartists 0:7dd43900b657 221 {
embeddedartists 0:7dd43900b657 222 --x;
embeddedartists 0:7dd43900b657 223 Error -= x;
embeddedartists 0:7dd43900b657 224 Error -= x;
embeddedartists 0:7dd43900b657 225 }
embeddedartists 0:7dd43900b657 226 }
embeddedartists 0:7dd43900b657 227 }
embeddedartists 0:7dd43900b657 228
embeddedartists 0:7dd43900b657 229