Diff: MandelbDemo.h

Revision:

0:e24e3d741c52

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MandelbDemo.h	Fri Oct 03 13:21:52 2014 +0000
@@ -0,0 +1,98 @@
+
+#ifndef MANDELBDEMO_H
+#define MANDELBDEMO_H
+
+#include "Graphics.h"
+#include "GFXFb.h"
+#include "EaLcdBoardGPIO.h"
+
+class MandelbDemo : public Graphics {
+public:
+
+    typedef struct
+    {
+        uint8_t xx;
+        uint8_t yy;
+        uint8_t rr;
+        uint8_t skip;
+    } Coord_t;
+    
+    /** Set the address of the frame buffer to use.
+     *
+     *  It is the content of the frame buffer that is shown on the
+     *  display. All the drawing on the frame buffer can be done
+     *  'offline' and whenever it should be shown this function
+     *  can be called with the address of the offline frame buffer.
+     *
+     *  @param pFrameBuf  Pointer to the frame buffer, which must be
+     *                    3 times as big as the frame size (for tripple
+     *                    buffering).
+     *         dispWidth  The width of the display (in pixels).
+     *         dispHeight The height of the display (in pixels).
+     *         loops      Number of loops in the demo code.
+     *         delayMs    Delay in milliseconds between schreen updates.
+     *
+     *  @returns
+     *       none
+     */
+    MandelbDemo(uint8_t *pFrameBuf, uint16_t dispWidth, uint16_t dispHeight);
+    
+    void run(EaLcdBoardGPIO& lcdBoard, uint32_t loops, uint32_t delayMs);
+
+protected:
+    virtual void plot4points( int32_t cx, int32_t cy, int32_t x, int32_t y, int16_t color, int32_t doMandel );
+    
+private:
+
+    enum Constants {
+        UPDATE_ZONE_COLOR  = 0x39e7, //DARK_GRAY
+
+        // Width and Height of Mandelbrot (which will be a square)
+        MANDEL_WIDTH    = 250,
+        MANDEL_HEIGHT   = MANDEL_WIDTH,
+        
+        // Number of iterations before the Mandelbrot function stops
+        MAXITERATIONS  = 256
+    };
+    
+    int32_t windowX;
+    int32_t windowY;
+    uint16_t *pFrmBuf;
+    uint16_t *pFrmBuf1;
+    uint16_t *pFrmBuf2;
+    uint16_t *pFrmBuf3;
+    
+    //Graphics graphics;
+
+    // Color mapping array
+    uint16_t cols[MAXITERATIONS + 1];
+    
+    // Color of pixel to be plotted
+    uint32_t color;
+
+    // real and imaginary part of the pixel p
+    float pixel_real;
+    float pixel_imag;
+
+    //real and imaginary parts of new and old z
+    float newReal;
+    float newImag;
+    float oldReal;
+    float oldImag;
+
+    // Zoom and position within image
+    float zoom;
+    float moveX;
+    float moveY;
+
+    // For loop counters
+//    int x;
+//    int y;
+
+    uint32_t iterate( int32_t x, int32_t y );
+ 
+    unsigned short qsqrt(unsigned long a) const;
+};
+
+#endif /* MANDELBDEMO_H */
+