EmbeddedArtists AB / Mbed 2 deprecated lpc4088_ebb_gui_cube

Graphical demo for the LPC4088 Experiment Base Board with one of the Display Expansion Kits. This demo shows a rotating 3D cube with and without textures.

Dependencies:   EALib mbed

Graphics.cpp@0:c828045bbe69, 2014-10-03 (annotated)

Committer:
embeddedartists
Date:
Fri Oct 03 12:48:37 2014 +0000
Revision:
0:c828045bbe69
First version.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
embeddedartists 0:c828045bbe69 1
embeddedartists 0:c828045bbe69 2 #include "mbed.h"
embeddedartists 0:c828045bbe69 3 #include "Graphics.h"
embeddedartists 0:c828045bbe69 4
embeddedartists 0:c828045bbe69 5
embeddedartists 0:c828045bbe69 6 Graphics::Graphics(uint16_t *pFrmBuf, uint16_t dispWidth, uint16_t dispHeight)
embeddedartists 0:c828045bbe69 7 {
embeddedartists 0:c828045bbe69 8 this->windowX = dispWidth;
embeddedartists 0:c828045bbe69 9 this->windowY = dispHeight;
embeddedartists 0:c828045bbe69 10 this->pFrmBuf = pFrmBuf;
embeddedartists 0:c828045bbe69 11 }
embeddedartists 0:c828045bbe69 12
embeddedartists 0:c828045bbe69 13 void Graphics::setFrameBuffer( uint16_t *pFrmBuf )
embeddedartists 0:c828045bbe69 14 {
embeddedartists 0:c828045bbe69 15 this->pFrmBuf = pFrmBuf;
embeddedartists 0:c828045bbe69 16 }
embeddedartists 0:c828045bbe69 17
embeddedartists 0:c828045bbe69 18 int32_t Graphics::abs(int32_t v1) const
embeddedartists 0:c828045bbe69 19 {
embeddedartists 0:c828045bbe69 20 if (v1 > 0)
embeddedartists 0:c828045bbe69 21 return v1;
embeddedartists 0:c828045bbe69 22
embeddedartists 0:c828045bbe69 23 return -v1;
embeddedartists 0:c828045bbe69 24 }
embeddedartists 0:c828045bbe69 25
embeddedartists 0:c828045bbe69 26 /***********************************************************************
embeddedartists 0:c828045bbe69 27 *
embeddedartists 0:c828045bbe69 28 * Function: swim_put_line_raw
embeddedartists 0:c828045bbe69 29 *
embeddedartists 0:c828045bbe69 30 * Purpose: Draw a line on the physical display
embeddedartists 0:c828045bbe69 31 *
embeddedartists 0:c828045bbe69 32 * Processing:
embeddedartists 0:c828045bbe69 33 * See function.
embeddedartists 0:c828045bbe69 34 *
embeddedartists 0:c828045bbe69 35 * Parameters:
embeddedartists 0:c828045bbe69 36 * win : Window identifier
embeddedartists 0:c828045bbe69 37 * x1 : Physical X position of X line start
embeddedartists 0:c828045bbe69 38 * y1 : Physical Y position of Y line start
embeddedartists 0:c828045bbe69 39 * x2 : Physical X position of X line end
embeddedartists 0:c828045bbe69 40 * y2 : Physical Y position of Y line end
embeddedartists 0:c828045bbe69 41 *
embeddedartists 0:c828045bbe69 42 * Outputs: None
embeddedartists 0:c828045bbe69 43 *
embeddedartists 0:c828045bbe69 44 * Returns: Nothing
embeddedartists 0:c828045bbe69 45 *
embeddedartists 0:c828045bbe69 46 * Notes: None
embeddedartists 0:c828045bbe69 47 *
embeddedartists 0:c828045bbe69 48 **********************************************************************/
embeddedartists 0:c828045bbe69 49 void Graphics::put_line(int32_t x1, int32_t y1, int32_t x2, int32_t y2, int16_t color)
embeddedartists 0:c828045bbe69 50 {
embeddedartists 0:c828045bbe69 51 int32_t e2, sx, sy, dx, dy, err;
embeddedartists 0:c828045bbe69 52
embeddedartists 0:c828045bbe69 53 /* calculate delta_x and delta_y */
embeddedartists 0:c828045bbe69 54 dx = abs(x2 - x1);
embeddedartists 0:c828045bbe69 55 dy = abs(y2 - y1);
embeddedartists 0:c828045bbe69 56
embeddedartists 0:c828045bbe69 57 /* set the direction for the step for both x and y, and
embeddedartists 0:c828045bbe69 58 initialize the error */
embeddedartists 0:c828045bbe69 59 if (x1 < x2)
embeddedartists 0:c828045bbe69 60 sx = 1;
embeddedartists 0:c828045bbe69 61 else
embeddedartists 0:c828045bbe69 62 sx = -1;
embeddedartists 0:c828045bbe69 63
embeddedartists 0:c828045bbe69 64 if (y1 < y2)
embeddedartists 0:c828045bbe69 65 sy = 1;
embeddedartists 0:c828045bbe69 66 else
embeddedartists 0:c828045bbe69 67 sy = -1;
embeddedartists 0:c828045bbe69 68
embeddedartists 0:c828045bbe69 69 err = dx - dy;
embeddedartists 0:c828045bbe69 70
embeddedartists 0:c828045bbe69 71 while (1)
embeddedartists 0:c828045bbe69 72 {
embeddedartists 0:c828045bbe69 73 if ((x1 >= 0) && (x1 < this->windowX) &&
embeddedartists 0:c828045bbe69 74 (y1 >= 0) && (y1 < this->windowY))
embeddedartists 0:c828045bbe69 75 this->pFrmBuf[x1 + (this->windowX*y1)] = color;
embeddedartists 0:c828045bbe69 76
embeddedartists 0:c828045bbe69 77 if ((x1 == x2) && (y1 == y2))
embeddedartists 0:c828045bbe69 78 return;
embeddedartists 0:c828045bbe69 79
embeddedartists 0:c828045bbe69 80 e2 = 2 * err;
embeddedartists 0:c828045bbe69 81 if (e2 > -dy)
embeddedartists 0:c828045bbe69 82 {
embeddedartists 0:c828045bbe69 83 err -= dy;
embeddedartists 0:c828045bbe69 84 x1 += sx;
embeddedartists 0:c828045bbe69 85 }
embeddedartists 0:c828045bbe69 86 if (e2 < dx)
embeddedartists 0:c828045bbe69 87 {
embeddedartists 0:c828045bbe69 88 err += dx;
embeddedartists 0:c828045bbe69 89 y1 += sy;
embeddedartists 0:c828045bbe69 90 }
embeddedartists 0:c828045bbe69 91 }
embeddedartists 0:c828045bbe69 92 }
embeddedartists 0:c828045bbe69 93
embeddedartists 0:c828045bbe69 94 /***********************************************************************
embeddedartists 0:c828045bbe69 95 *
embeddedartists 0:c828045bbe69 96 * Function: plot4points
embeddedartists 0:c828045bbe69 97 *
embeddedartists 0:c828045bbe69 98 * Purpose:
embeddedartists 0:c828045bbe69 99 *
embeddedartists 0:c828045bbe69 100 * Processing:
embeddedartists 0:c828045bbe69 101 * See function.
embeddedartists 0:c828045bbe69 102 *
embeddedartists 0:c828045bbe69 103 * Parameters:
embeddedartists 0:c828045bbe69 104 * win : Window identifier
embeddedartists 0:c828045bbe69 105 * cx :
embeddedartists 0:c828045bbe69 106 * cy :
embeddedartists 0:c828045bbe69 107 * x :
embeddedartists 0:c828045bbe69 108 * y :
embeddedartists 0:c828045bbe69 109 * Filled :
embeddedartists 0:c828045bbe69 110 *
embeddedartists 0:c828045bbe69 111 * Outputs: None
embeddedartists 0:c828045bbe69 112 *
embeddedartists 0:c828045bbe69 113 * Returns: Nothing
embeddedartists 0:c828045bbe69 114 *
embeddedartists 0:c828045bbe69 115 * Notes: None
embeddedartists 0:c828045bbe69 116 *
embeddedartists 0:c828045bbe69 117 **********************************************************************/
embeddedartists 0:c828045bbe69 118 void Graphics::plot4points( int32_t cx, int32_t cy, int32_t x, int32_t y, int16_t color, int32_t Filled )
embeddedartists 0:c828045bbe69 119 {
embeddedartists 0:c828045bbe69 120 int16_t x0, x1, y0, y1;
embeddedartists 0:c828045bbe69 121
embeddedartists 0:c828045bbe69 122 y0 = cy + y;
embeddedartists 0:c828045bbe69 123 y1 = cy - y;
embeddedartists 0:c828045bbe69 124 if( Filled )
embeddedartists 0:c828045bbe69 125 {
embeddedartists 0:c828045bbe69 126 for( x0=cx - x; x0<=cx + x; x0++ )
embeddedartists 0:c828045bbe69 127 {
embeddedartists 0:c828045bbe69 128 if ((x0>=0) && (x0<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:c828045bbe69 129 this->pFrmBuf[x0 + (this->windowX*y0)] = color;
embeddedartists 0:c828045bbe69 130 if ((x0>=0) && (x0<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:c828045bbe69 131 this->pFrmBuf[x0 + (this->windowX*y1)] = color;
embeddedartists 0:c828045bbe69 132 }
embeddedartists 0:c828045bbe69 133 }
embeddedartists 0:c828045bbe69 134 else
embeddedartists 0:c828045bbe69 135 {
embeddedartists 0:c828045bbe69 136 x0 = cx + x;
embeddedartists 0:c828045bbe69 137 x1 = cx - x;
embeddedartists 0:c828045bbe69 138 if ((x0>=0) && (x0<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:c828045bbe69 139 this->pFrmBuf[x0 + (this->windowX*y0)] = color;
embeddedartists 0:c828045bbe69 140 if ((x != 0) &&
embeddedartists 0:c828045bbe69 141 (x1>=0) && (x1<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:c828045bbe69 142 this->pFrmBuf[x1 + (this->windowX*y0)] = color;
embeddedartists 0:c828045bbe69 143 if ((y != 0) &&
embeddedartists 0:c828045bbe69 144 (x0>=0) && (x0<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:c828045bbe69 145 this->pFrmBuf[x0 + (this->windowX*y1)] = color;
embeddedartists 0:c828045bbe69 146 if ((x != 0 && y != 0) &&
embeddedartists 0:c828045bbe69 147 (x1>=0) && (x1<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:c828045bbe69 148 this->pFrmBuf[x1 + (this->windowX*y1)] = color;
embeddedartists 0:c828045bbe69 149 }
embeddedartists 0:c828045bbe69 150 }
embeddedartists 0:c828045bbe69 151
embeddedartists 0:c828045bbe69 152 /***********************************************************************
embeddedartists 0:c828045bbe69 153 *
embeddedartists 0:c828045bbe69 154 * Function: plot8points
embeddedartists 0:c828045bbe69 155 *
embeddedartists 0:c828045bbe69 156 * Purpose:
embeddedartists 0:c828045bbe69 157 *
embeddedartists 0:c828045bbe69 158 * Processing:
embeddedartists 0:c828045bbe69 159 * See function.
embeddedartists 0:c828045bbe69 160 *
embeddedartists 0:c828045bbe69 161 * Parameters:
embeddedartists 0:c828045bbe69 162 * win : Window identifier
embeddedartists 0:c828045bbe69 163 * cx :
embeddedartists 0:c828045bbe69 164 * cy :
embeddedartists 0:c828045bbe69 165 * x :
embeddedartists 0:c828045bbe69 166 * y :
embeddedartists 0:c828045bbe69 167 * Filled :
embeddedartists 0:c828045bbe69 168 *
embeddedartists 0:c828045bbe69 169 * Outputs: None
embeddedartists 0:c828045bbe69 170 *
embeddedartists 0:c828045bbe69 171 * Returns: Nothing
embeddedartists 0:c828045bbe69 172 *
embeddedartists 0:c828045bbe69 173 * Notes: None
embeddedartists 0:c828045bbe69 174 *
embeddedartists 0:c828045bbe69 175 **********************************************************************/
embeddedartists 0:c828045bbe69 176 void Graphics::plot8points( int32_t cx, int32_t cy, int32_t x, int32_t y, int16_t color, int32_t Filled )
embeddedartists 0:c828045bbe69 177 {
embeddedartists 0:c828045bbe69 178 plot4points( cx, cy, x, y, color, Filled );
embeddedartists 0:c828045bbe69 179 if (x != y)
embeddedartists 0:c828045bbe69 180 plot4points( cx, cy, y, x, color, Filled );
embeddedartists 0:c828045bbe69 181 }
embeddedartists 0:c828045bbe69 182
embeddedartists 0:c828045bbe69 183 /***********************************************************************
embeddedartists 0:c828045bbe69 184 *
embeddedartists 0:c828045bbe69 185 * Function: swim_put_circle
embeddedartists 0:c828045bbe69 186 *
embeddedartists 0:c828045bbe69 187 * Purpose:
embeddedartists 0:c828045bbe69 188 *
embeddedartists 0:c828045bbe69 189 * Processing:
embeddedartists 0:c828045bbe69 190 * See function.
embeddedartists 0:c828045bbe69 191 *
embeddedartists 0:c828045bbe69 192 * Parameters:
embeddedartists 0:c828045bbe69 193 * win : Window identifier
embeddedartists 0:c828045bbe69 194 * cx :
embeddedartists 0:c828045bbe69 195 * cy :
embeddedartists 0:c828045bbe69 196 * radius :
embeddedartists 0:c828045bbe69 197 * Filled :
embeddedartists 0:c828045bbe69 198 *
embeddedartists 0:c828045bbe69 199 * Outputs: None
embeddedartists 0:c828045bbe69 200 *
embeddedartists 0:c828045bbe69 201 * Returns: Nothing
embeddedartists 0:c828045bbe69 202 *
embeddedartists 0:c828045bbe69 203 * Notes: None
embeddedartists 0:c828045bbe69 204 *
embeddedartists 0:c828045bbe69 205 **********************************************************************/
embeddedartists 0:c828045bbe69 206 void Graphics::put_circle( int32_t cx, int32_t cy, int16_t color, int32_t radius, int32_t Filled )
embeddedartists 0:c828045bbe69 207 {
embeddedartists 0:c828045bbe69 208 int32_t Error = -radius;
embeddedartists 0:c828045bbe69 209 int16_t x = radius;
embeddedartists 0:c828045bbe69 210 int16_t y = 0;
embeddedartists 0:c828045bbe69 211
embeddedartists 0:c828045bbe69 212 while( x >= y )
embeddedartists 0:c828045bbe69 213 {
embeddedartists 0:c828045bbe69 214 plot8points( cx, cy, x, y, color, Filled );
embeddedartists 0:c828045bbe69 215
embeddedartists 0:c828045bbe69 216 Error += y;
embeddedartists 0:c828045bbe69 217 ++y;
embeddedartists 0:c828045bbe69 218 Error += y;
embeddedartists 0:c828045bbe69 219
embeddedartists 0:c828045bbe69 220 if( Error >= 0 )
embeddedartists 0:c828045bbe69 221 {
embeddedartists 0:c828045bbe69 222 --x;
embeddedartists 0:c828045bbe69 223 Error -= x;
embeddedartists 0:c828045bbe69 224 Error -= x;
embeddedartists 0:c828045bbe69 225 }
embeddedartists 0:c828045bbe69 226 }
embeddedartists 0:c828045bbe69 227 }
embeddedartists 0:c828045bbe69 228
embeddedartists 0:c828045bbe69 229 void Graphics::put_dot( int32_t cx, int32_t cy, int16_t color )
embeddedartists 0:c828045bbe69 230 {
embeddedartists 0:c828045bbe69 231 int size = 1;
embeddedartists 0:c828045bbe69 232 for (int y1 = cy - size; y1 <= (cy + size); y1++) {
embeddedartists 0:c828045bbe69 233 for (int x1 = cx - size; x1 <= (cx + size); x1++) {
embeddedartists 0:c828045bbe69 234 if ((x1 >= 0) && (x1 < this->windowX) && (y1 >= 0) && (y1 < this->windowY)) {
embeddedartists 0:c828045bbe69 235 this->pFrmBuf[x1 + (this->windowX*y1)] = color;
embeddedartists 0:c828045bbe69 236 }
embeddedartists 0:c828045bbe69 237 }
embeddedartists 0:c828045bbe69 238 }
embeddedartists 0:c828045bbe69 239 }
embeddedartists 0:c828045bbe69 240
embeddedartists 0:c828045bbe69 241
embeddedartists 0:c828045bbe69 242