EmbeddedArtists AB / Mbed 2 deprecated lpc4088_ebb_gui_globe

Graphical demo for the LPC4088 Experiment Base Board with one of the Display Expansion Kits. This demo shows a number of dots projected on a rotating sphere.

Dependencies:   EALib mbed

Graphics.cpp@0:79b286950b60, 2014-10-03 (annotated)

Committer:
embeddedartists
Date:
Fri Oct 03 13:15:25 2014 +0000
Revision:
0:79b286950b60
First version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
embeddedartists 0:79b286950b60 1
embeddedartists 0:79b286950b60 2 #include "mbed.h"
embeddedartists 0:79b286950b60 3 #include "Graphics.h"
embeddedartists 0:79b286950b60 4
embeddedartists 0:79b286950b60 5
embeddedartists 0:79b286950b60 6 Graphics::Graphics(uint16_t *pFrmBuf, uint16_t dispWidth, uint16_t dispHeight)
embeddedartists 0:79b286950b60 7 {
embeddedartists 0:79b286950b60 8 this->windowX = dispWidth;
embeddedartists 0:79b286950b60 9 this->windowY = dispHeight;
embeddedartists 0:79b286950b60 10 this->pFrmBuf = pFrmBuf;
embeddedartists 0:79b286950b60 11 }
embeddedartists 0:79b286950b60 12
embeddedartists 0:79b286950b60 13 void Graphics::setFrameBuffer( uint16_t *pFrmBuf )
embeddedartists 0:79b286950b60 14 {
embeddedartists 0:79b286950b60 15 this->pFrmBuf = pFrmBuf;
embeddedartists 0:79b286950b60 16 }
embeddedartists 0:79b286950b60 17
embeddedartists 0:79b286950b60 18 int32_t Graphics::abs(int32_t v1) const
embeddedartists 0:79b286950b60 19 {
embeddedartists 0:79b286950b60 20 if (v1 > 0)
embeddedartists 0:79b286950b60 21 return v1;
embeddedartists 0:79b286950b60 22
embeddedartists 0:79b286950b60 23 return -v1;
embeddedartists 0:79b286950b60 24 }
embeddedartists 0:79b286950b60 25
embeddedartists 0:79b286950b60 26 /***********************************************************************
embeddedartists 0:79b286950b60 27 *
embeddedartists 0:79b286950b60 28 * Function: swim_put_line_raw
embeddedartists 0:79b286950b60 29 *
embeddedartists 0:79b286950b60 30 * Purpose: Draw a line on the physical display
embeddedartists 0:79b286950b60 31 *
embeddedartists 0:79b286950b60 32 * Processing:
embeddedartists 0:79b286950b60 33 * See function.
embeddedartists 0:79b286950b60 34 *
embeddedartists 0:79b286950b60 35 * Parameters:
embeddedartists 0:79b286950b60 36 * win : Window identifier
embeddedartists 0:79b286950b60 37 * x1 : Physical X position of X line start
embeddedartists 0:79b286950b60 38 * y1 : Physical Y position of Y line start
embeddedartists 0:79b286950b60 39 * x2 : Physical X position of X line end
embeddedartists 0:79b286950b60 40 * y2 : Physical Y position of Y line end
embeddedartists 0:79b286950b60 41 *
embeddedartists 0:79b286950b60 42 * Outputs: None
embeddedartists 0:79b286950b60 43 *
embeddedartists 0:79b286950b60 44 * Returns: Nothing
embeddedartists 0:79b286950b60 45 *
embeddedartists 0:79b286950b60 46 * Notes: None
embeddedartists 0:79b286950b60 47 *
embeddedartists 0:79b286950b60 48 **********************************************************************/
embeddedartists 0:79b286950b60 49 void Graphics::put_line(int32_t x1, int32_t y1, int32_t x2, int32_t y2, int16_t color)
embeddedartists 0:79b286950b60 50 {
embeddedartists 0:79b286950b60 51 int32_t e2, sx, sy, dx, dy, err;
embeddedartists 0:79b286950b60 52
embeddedartists 0:79b286950b60 53 /* calculate delta_x and delta_y */
embeddedartists 0:79b286950b60 54 dx = abs(x2 - x1);
embeddedartists 0:79b286950b60 55 dy = abs(y2 - y1);
embeddedartists 0:79b286950b60 56
embeddedartists 0:79b286950b60 57 /* set the direction for the step for both x and y, and
embeddedartists 0:79b286950b60 58 initialize the error */
embeddedartists 0:79b286950b60 59 if (x1 < x2)
embeddedartists 0:79b286950b60 60 sx = 1;
embeddedartists 0:79b286950b60 61 else
embeddedartists 0:79b286950b60 62 sx = -1;
embeddedartists 0:79b286950b60 63
embeddedartists 0:79b286950b60 64 if (y1 < y2)
embeddedartists 0:79b286950b60 65 sy = 1;
embeddedartists 0:79b286950b60 66 else
embeddedartists 0:79b286950b60 67 sy = -1;
embeddedartists 0:79b286950b60 68
embeddedartists 0:79b286950b60 69 err = dx - dy;
embeddedartists 0:79b286950b60 70
embeddedartists 0:79b286950b60 71 while (1)
embeddedartists 0:79b286950b60 72 {
embeddedartists 0:79b286950b60 73 if ((x1 >= 0) && (x1 < this->windowX) &&
embeddedartists 0:79b286950b60 74 (y1 >= 0) && (y1 < this->windowY))
embeddedartists 0:79b286950b60 75 this->pFrmBuf[x1 + (this->windowX*y1)] = color;
embeddedartists 0:79b286950b60 76
embeddedartists 0:79b286950b60 77 if ((x1 == x2) && (y1 == y2))
embeddedartists 0:79b286950b60 78 return;
embeddedartists 0:79b286950b60 79
embeddedartists 0:79b286950b60 80 e2 = 2 * err;
embeddedartists 0:79b286950b60 81 if (e2 > -dy)
embeddedartists 0:79b286950b60 82 {
embeddedartists 0:79b286950b60 83 err -= dy;
embeddedartists 0:79b286950b60 84 x1 += sx;
embeddedartists 0:79b286950b60 85 }
embeddedartists 0:79b286950b60 86 if (e2 < dx)
embeddedartists 0:79b286950b60 87 {
embeddedartists 0:79b286950b60 88 err += dx;
embeddedartists 0:79b286950b60 89 y1 += sy;
embeddedartists 0:79b286950b60 90 }
embeddedartists 0:79b286950b60 91 }
embeddedartists 0:79b286950b60 92 }
embeddedartists 0:79b286950b60 93
embeddedartists 0:79b286950b60 94 /***********************************************************************
embeddedartists 0:79b286950b60 95 *
embeddedartists 0:79b286950b60 96 * Function: plot4points
embeddedartists 0:79b286950b60 97 *
embeddedartists 0:79b286950b60 98 * Purpose:
embeddedartists 0:79b286950b60 99 *
embeddedartists 0:79b286950b60 100 * Processing:
embeddedartists 0:79b286950b60 101 * See function.
embeddedartists 0:79b286950b60 102 *
embeddedartists 0:79b286950b60 103 * Parameters:
embeddedartists 0:79b286950b60 104 * win : Window identifier
embeddedartists 0:79b286950b60 105 * cx :
embeddedartists 0:79b286950b60 106 * cy :
embeddedartists 0:79b286950b60 107 * x :
embeddedartists 0:79b286950b60 108 * y :
embeddedartists 0:79b286950b60 109 * Filled :
embeddedartists 0:79b286950b60 110 *
embeddedartists 0:79b286950b60 111 * Outputs: None
embeddedartists 0:79b286950b60 112 *
embeddedartists 0:79b286950b60 113 * Returns: Nothing
embeddedartists 0:79b286950b60 114 *
embeddedartists 0:79b286950b60 115 * Notes: None
embeddedartists 0:79b286950b60 116 *
embeddedartists 0:79b286950b60 117 **********************************************************************/
embeddedartists 0:79b286950b60 118 void Graphics::plot4points( int32_t cx, int32_t cy, int32_t x, int32_t y, int16_t color, int32_t Filled )
embeddedartists 0:79b286950b60 119 {
embeddedartists 0:79b286950b60 120 int16_t x0, x1, y0, y1;
embeddedartists 0:79b286950b60 121
embeddedartists 0:79b286950b60 122 y0 = cy + y;
embeddedartists 0:79b286950b60 123 y1 = cy - y;
embeddedartists 0:79b286950b60 124 if( Filled )
embeddedartists 0:79b286950b60 125 {
embeddedartists 0:79b286950b60 126 for( x0=cx - x; x0<=cx + x; x0++ )
embeddedartists 0:79b286950b60 127 {
embeddedartists 0:79b286950b60 128 if ((x0>=0) && (x0<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:79b286950b60 129 this->pFrmBuf[x0 + (this->windowX*y0)] = color;
embeddedartists 0:79b286950b60 130 if ((x0>=0) && (x0<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:79b286950b60 131 this->pFrmBuf[x0 + (this->windowX*y1)] = color;
embeddedartists 0:79b286950b60 132 }
embeddedartists 0:79b286950b60 133 }
embeddedartists 0:79b286950b60 134 else
embeddedartists 0:79b286950b60 135 {
embeddedartists 0:79b286950b60 136 x0 = cx + x;
embeddedartists 0:79b286950b60 137 x1 = cx - x;
embeddedartists 0:79b286950b60 138 if ((x0>=0) && (x0<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:79b286950b60 139 this->pFrmBuf[x0 + (this->windowX*y0)] = color;
embeddedartists 0:79b286950b60 140 if ((x != 0) &&
embeddedartists 0:79b286950b60 141 (x1>=0) && (x1<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:79b286950b60 142 this->pFrmBuf[x1 + (this->windowX*y0)] = color;
embeddedartists 0:79b286950b60 143 if ((y != 0) &&
embeddedartists 0:79b286950b60 144 (x0>=0) && (x0<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:79b286950b60 145 this->pFrmBuf[x0 + (this->windowX*y1)] = color;
embeddedartists 0:79b286950b60 146 if ((x != 0 && y != 0) &&
embeddedartists 0:79b286950b60 147 (x1>=0) && (x1<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:79b286950b60 148 this->pFrmBuf[x1 + (this->windowX*y1)] = color;
embeddedartists 0:79b286950b60 149 }
embeddedartists 0:79b286950b60 150 }
embeddedartists 0:79b286950b60 151
embeddedartists 0:79b286950b60 152 /***********************************************************************
embeddedartists 0:79b286950b60 153 *
embeddedartists 0:79b286950b60 154 * Function: plot8points
embeddedartists 0:79b286950b60 155 *
embeddedartists 0:79b286950b60 156 * Purpose:
embeddedartists 0:79b286950b60 157 *
embeddedartists 0:79b286950b60 158 * Processing:
embeddedartists 0:79b286950b60 159 * See function.
embeddedartists 0:79b286950b60 160 *
embeddedartists 0:79b286950b60 161 * Parameters:
embeddedartists 0:79b286950b60 162 * win : Window identifier
embeddedartists 0:79b286950b60 163 * cx :
embeddedartists 0:79b286950b60 164 * cy :
embeddedartists 0:79b286950b60 165 * x :
embeddedartists 0:79b286950b60 166 * y :
embeddedartists 0:79b286950b60 167 * Filled :
embeddedartists 0:79b286950b60 168 *
embeddedartists 0:79b286950b60 169 * Outputs: None
embeddedartists 0:79b286950b60 170 *
embeddedartists 0:79b286950b60 171 * Returns: Nothing
embeddedartists 0:79b286950b60 172 *
embeddedartists 0:79b286950b60 173 * Notes: None
embeddedartists 0:79b286950b60 174 *
embeddedartists 0:79b286950b60 175 **********************************************************************/
embeddedartists 0:79b286950b60 176 void Graphics::plot8points( int32_t cx, int32_t cy, int32_t x, int32_t y, int16_t color, int32_t Filled )
embeddedartists 0:79b286950b60 177 {
embeddedartists 0:79b286950b60 178 plot4points( cx, cy, x, y, color, Filled );
embeddedartists 0:79b286950b60 179 if (x != y)
embeddedartists 0:79b286950b60 180 plot4points( cx, cy, y, x, color, Filled );
embeddedartists 0:79b286950b60 181 }
embeddedartists 0:79b286950b60 182
embeddedartists 0:79b286950b60 183 /***********************************************************************
embeddedartists 0:79b286950b60 184 *
embeddedartists 0:79b286950b60 185 * Function: swim_put_circle
embeddedartists 0:79b286950b60 186 *
embeddedartists 0:79b286950b60 187 * Purpose:
embeddedartists 0:79b286950b60 188 *
embeddedartists 0:79b286950b60 189 * Processing:
embeddedartists 0:79b286950b60 190 * See function.
embeddedartists 0:79b286950b60 191 *
embeddedartists 0:79b286950b60 192 * Parameters:
embeddedartists 0:79b286950b60 193 * win : Window identifier
embeddedartists 0:79b286950b60 194 * cx :
embeddedartists 0:79b286950b60 195 * cy :
embeddedartists 0:79b286950b60 196 * radius :
embeddedartists 0:79b286950b60 197 * Filled :
embeddedartists 0:79b286950b60 198 *
embeddedartists 0:79b286950b60 199 * Outputs: None
embeddedartists 0:79b286950b60 200 *
embeddedartists 0:79b286950b60 201 * Returns: Nothing
embeddedartists 0:79b286950b60 202 *
embeddedartists 0:79b286950b60 203 * Notes: None
embeddedartists 0:79b286950b60 204 *
embeddedartists 0:79b286950b60 205 **********************************************************************/
embeddedartists 0:79b286950b60 206 void Graphics::put_circle( int32_t cx, int32_t cy, int16_t color, int32_t radius, int32_t Filled )
embeddedartists 0:79b286950b60 207 {
embeddedartists 0:79b286950b60 208 int32_t Error = -radius;
embeddedartists 0:79b286950b60 209 int16_t x = radius;
embeddedartists 0:79b286950b60 210 int16_t y = 0;
embeddedartists 0:79b286950b60 211
embeddedartists 0:79b286950b60 212 while( x >= y )
embeddedartists 0:79b286950b60 213 {
embeddedartists 0:79b286950b60 214 plot8points( cx, cy, x, y, color, Filled );
embeddedartists 0:79b286950b60 215
embeddedartists 0:79b286950b60 216 Error += y;
embeddedartists 0:79b286950b60 217 ++y;
embeddedartists 0:79b286950b60 218 Error += y;
embeddedartists 0:79b286950b60 219
embeddedartists 0:79b286950b60 220 if( Error >= 0 )
embeddedartists 0:79b286950b60 221 {
embeddedartists 0:79b286950b60 222 --x;
embeddedartists 0:79b286950b60 223 Error -= x;
embeddedartists 0:79b286950b60 224 Error -= x;
embeddedartists 0:79b286950b60 225 }
embeddedartists 0:79b286950b60 226 }
embeddedartists 0:79b286950b60 227 }
embeddedartists 0:79b286950b60 228
embeddedartists 0:79b286950b60 229 void Graphics::put_dot( int32_t cx, int32_t cy, int16_t color )
embeddedartists 0:79b286950b60 230 {
embeddedartists 0:79b286950b60 231 int size = 1;
embeddedartists 0:79b286950b60 232 for (int y1 = cy - size; y1 <= (cy + size); y1++) {
embeddedartists 0:79b286950b60 233 for (int x1 = cx - size; x1 <= (cx + size); x1++) {
embeddedartists 0:79b286950b60 234 if ((x1 >= 0) && (x1 < this->windowX) && (y1 >= 0) && (y1 < this->windowY)) {
embeddedartists 0:79b286950b60 235 this->pFrmBuf[x1 + (this->windowX*y1)] = color;
embeddedartists 0:79b286950b60 236 }
embeddedartists 0:79b286950b60 237 }
embeddedartists 0:79b286950b60 238 }
embeddedartists 0:79b286950b60 239 }
embeddedartists 0:79b286950b60 240
embeddedartists 0:79b286950b60 241