WaveDemo.h

00001 
00002 #ifndef WAVEDEMO_H
00003 #define WAVEDEMO_H
00004 
00005 #include "Graphics.h"
00006 #include "GFXFb.h"
00007 
00008 #include "EaLcdBoardGPIO.h"
00009 
00010 class WaveDemo {
00011 public:
00012 
00013     /** Set the address of the frame buffer to use.
00014      *
00015      *  It is the content of the frame buffer that is shown on the
00016      *  display. All the drawing on the frame buffer can be done
00017      *  'offline' and whenever it should be shown this function
00018      *  can be called with the address of the offline frame buffer.
00019      *
00020      *  @param pFrameBuf  Pointer to the frame buffer, which must be
00021      *                    3 times as big as the frame size (for tripple
00022      *                    buffering).
00023      *         dispWidth  The width of the display (in pixels).
00024      *         dispHeight The height of the display (in pixels).
00025      *         loops      Number of loops in the demo code.
00026      *         delayMs    Delay in milliseconds between schreen updates.
00027      *
00028      *  @returns
00029      *       none
00030      */
00031     WaveDemo(uint8_t *pFrameBuf, uint16_t dispWidth, uint16_t dispHeight);
00032     
00033     void run(EaLcdBoardGPIO& lcdBoard, uint32_t loops, uint32_t delayMs);
00034 
00035 private:
00036 
00037     enum Constants {
00038         N         = 1024, // Number of dots
00039         SCALE     = 8192,
00040         INCREMENT = 512,  // INCREMENT = SCALE / sqrt(N) * 2
00041         SPEED     = 5
00042     };
00043 
00044     int32_t windowX;
00045     int32_t windowY;
00046     uint16_t *pFrmBuf;
00047     uint16_t *pFrmBuf1;
00048     uint16_t *pFrmBuf2;
00049     uint16_t *pFrmBuf3;
00050     
00051     Graphics graphics;
00052     
00053     int16_t sine[SCALE];
00054     int16_t cosi[SCALE];
00055     
00056     uint16_t fastsqrt(uint32_t n) const;
00057     void matrix(int16_t xyz[3][N], uint8_t rgb[3][N]);
00058     void rotate(int16_t xyz[3][N], uint8_t rgb[3][N], uint16_t angleX, uint16_t angleY, uint16_t angleZ);
00059     void draw(int16_t xyz[3][N], uint8_t rgb[3][N]);
00060 };
00061 
00062 #endif /* WAVEDEMO_H */
00063